In wallpaper app i am getting Gap beside the image in fullScreenView

In wallpaper app i am getting Gap beside the image in fullScreenView - javascript

Plz Look at the below image i am getting Gap beside the image in full screen view anyone plz help
Please have a look on my code and tell me what's wrong with it.
If there is any solution plz explain me clearly step-by-step (I am New to android)
Gap Beside Image
package com.saveitornot.wallit;
FullscreenViewActivity.java
import android.annotation.SuppressLint;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.Point;
import android.graphics.drawable.BitmapDrawable;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.support.design.widget.CoordinatorLayout;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Display;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.Toast;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.ImageLoader;
import com.android.volley.toolbox.JsonObjectRequest;
import com.saveitornot.wallit.app.AppController;
import com.saveitornot.wallit.picasa.model.Wallpaper;
import com.saveitornot.wallit.utils.Utils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
public class FullScreenViewActivity extends AppCompatActivity implements View.OnClickListener {
private static final String TAG = FullScreenViewActivity.class
.getSimpleName();
public static final String TAG_SEL_IMAGE = "selectedImage";
private Wallpaper selectedPhoto;
private ImageView fullImageView;
private LinearLayout llSetWallpaper, llDownloadWallpaper;
private Utils utils;
private ProgressBar pbLoader;
private CoordinatorLayout coordinatorLayout;
private int progressStatus = 0;
private Handler handler = new Handler();
private String licencseURL,licenseeURL = null;
// Picasa JSON response node keys
private static final String TAG_ENTRY = "entry",
TAG_MEDIA_GROUP = "media$group",
TAG_MEDIA_CONTENT = "media$content", TAG_IMG_URL = "url",
TAG_IMG_WIDTH = "width", TAG_IMG_HEIGHT = "height";
#Override
protected void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_fullscreen_image);
fullImageView = (ImageView) findViewById(R.id.imgFullscreen);
llSetWallpaper = (LinearLayout) findViewById(R.id.llSetWallpaper);
llDownloadWallpaper = (LinearLayout) findViewById(R.id.llDownloadWallpaper);
pbLoader = (ProgressBar) findViewById(R.id.pbLoader);
pbLoader.setIndeterminate(true);
pbLoader.setMax(100);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setTitle("");
coordinatorLayout = (CoordinatorLayout) findViewById(R.id
.coordinatorLayout);
utils = new Utils(getApplicationContext());
// layout click listeners
llSetWallpaper.setOnClickListener(this);
llDownloadWallpaper.setOnClickListener(this);
// setting layout buttons alpha/opacity
llSetWallpaper.getBackground().setAlpha(70);
llDownloadWallpaper.getBackground().setAlpha(70);
Intent i = getIntent();
selectedPhoto = (Wallpaper) i.getSerializableExtra(TAG_SEL_IMAGE);
// check for selected photo null
if (selectedPhoto != null) {
// fetch photo full resolution image by making another json request
fetchFullResolutionImage();
} else {
Toast.makeText(getApplicationContext(),
getString(R.string.msg_unknown_error), Toast.LENGTH_SHORT)
.show();
}
}
/**
* Fetching image fullresolution json
* */
private void fetchFullResolutionImage() {
String url = selectedPhoto.getPhotoJson();
// show loader before making request
pbLoader.setVisibility(View.VISIBLE);
llSetWallpaper.setVisibility(View.GONE);
llDownloadWallpaper.setVisibility(View.GONE);
getSupportActionBar().hide();
// volley's json obj request
JsonObjectRequest jsonObjReq = new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
Log.d(TAG,
"Image full resolution json: "
+ response.toString());
try {
// Parsing the json response
JSONObject entry = response
.getJSONObject(TAG_ENTRY);
JSONArray mediacontentArry = entry.getJSONObject(
TAG_MEDIA_GROUP).getJSONArray(
TAG_MEDIA_CONTENT);
JSONObject mediaObj = (JSONObject) mediacontentArry
.get(0);
String fullResolutionUrl = mediaObj
.getString(TAG_IMG_URL);
// image full resolution widht and height
final int width = mediaObj.getInt(TAG_IMG_WIDTH);
final int height = mediaObj.getInt(TAG_IMG_HEIGHT);
Log.d(TAG, "Full resolution image. url: "
+ fullResolutionUrl + ", w: " + width
+ ", h: " + height);
ImageLoader imageLoader = AppController
.getInstance().getImageLoader();
// We download image into ImageView instead of
// NetworkImageView to have callback methods
// Currently NetworkImageView doesn't have callback
// methods
///
progressStatus = 0;
new Thread(new Runnable() {
#Override
public void run() {
while (progressStatus<100){
progressStatus += 1;
handler.post(new Runnable() {
#Override
public void run() {
pbLoader.setProgress(progressStatus);
}
});
try {
Thread.sleep(100);
}catch (InterruptedException e)
{
e.printStackTrace();
}
}
}
}).start();
///
imageLoader.get(fullResolutionUrl,
new ImageLoader.ImageListener() {
#Override
public void onErrorResponse(
VolleyError arg0) {
Toast.makeText(
getApplicationContext(),
getString(R.string.msg_wall_fetch_error),
Toast.LENGTH_LONG).show();
}
#Override
public void onResponse(
ImageLoader.ImageContainer response,
boolean arg1) {
if (response.getBitmap() != null) {
// load bitmap into imageview
fullImageView
.setImageBitmap(response
.getBitmap());
adjustImageAspect(width, height);
// hide loader and show set &
// download buttons
pbLoader.setVisibility(View.GONE);
llSetWallpaper
.setVisibility(View.VISIBLE);
llDownloadWallpaper
.setVisibility(View.VISIBLE);
getSupportActionBar().show();
}
}
});
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(),
getString(R.string.msg_unknown_error),
Toast.LENGTH_LONG).show();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Error: " + error.getMessage());
// unable to fetch wallpapers
// either google username is wrong or
// devices doesn't have internet connection
Toast.makeText(getApplicationContext(),
getString(R.string.msg_wall_fetch_error),
Toast.LENGTH_LONG).show();
}
});
// Remove the url from cache
AppController.getInstance().getRequestQueue().getCache().remove(url);
// Disable the cache for this url, so that it always fetches updated
// json
jsonObjReq.setShouldCache(false);
// Adding request to request queue
AppController.getInstance().addToRequestQueue(jsonObjReq);
}
/**
* Adjusting the image aspect ration to scroll horizontally, Image height
* will be screen height, width will be calculated respected to height
* */
#SuppressWarnings("deprecation")
#SuppressLint("NewApi")
private void adjustImageAspect(int bWidth, int bHeight) {
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
if (bWidth == 0 || bHeight == 0)
return;
int sHeight = 0;
if (android.os.Build.VERSION.SDK_INT >= 13) {
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
sHeight = size.y;
} else {
Display display = getWindowManager().getDefaultDisplay();
sHeight = display.getHeight();
}
int new_width = (int) Math.floor((double) bWidth * (double) sHeight
/ (double) bHeight);
params.width = new_width;
params.height = sHeight;
Log.d(TAG, "Fullscreen image new dimensions: w = " + new_width
+ ", h = " + sHeight);
fullImageView.setLayoutParams(params);
}
/**
* View click listener
* */
#Override
public void onClick(View v) {
Bitmap bitmap = ((BitmapDrawable) fullImageView.getDrawable())
.getBitmap();
switch (v.getId()) {
// button Download Wallpaper tapped
case R.id.llDownloadWallpaper:
utils.saveImageToSDCard(bitmap, coordinatorLayout);
break;
// button Set As Wallpaper tapped
case R.id.llSetWallpaper:
utils.setAsWallpaper(bitmap, coordinatorLayout);
break;
default:
break;
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_fullscreen, menu);
return true;
}
private void gotoURL(String url)
{
Uri uri = Uri.parse(url);
Intent goToWebsite = new Intent(Intent.ACTION_VIEW, uri);
// To count with Play market backstack, After pressing back button,
// to taken back to our application, we need to add following flags to intent.
int flags = Intent.FLAG_ACTIVITY_NO_HISTORY | Intent.FLAG_ACTIVITY_MULTIPLE_TASK;
if (Build.VERSION.SDK_INT >= 21)
{
flags |= Intent.FLAG_ACTIVITY_NEW_DOCUMENT;
}
else
{
//noinspection deprecation
flags |= Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET;
}
goToWebsite.addFlags(flags);
try {
startActivity(goToWebsite);
} catch (ActivityNotFoundException e) {
}
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
Bitmap bitmap = ((BitmapDrawable) fullImageView.getDrawable())
.getBitmap();
switch (id) {
case android.R.id.home:
finish();
return true;
case R.id.action_set_as_wallpaper:
utils.setAsWallpaper(bitmap, coordinatorLayout);
return true;
case R.id.action_download:
utils.saveImageToSDCard(bitmap, coordinatorLayout);
return true;
case R.id.action_share:
utils.shareImage(bitmap, coordinatorLayout);
return true;
case R.id.action_report:
utils.reportImage(bitmap);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
ManiActivity.java
package com.saveitornot.wallit;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import com.saveitornot.wallit.app.AppController;
import com.saveitornot.wallit.picasa.model.Category;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdView;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity implements FragmentDrawer.FragmentDrawerListener {
private static final String TAG = MainActivity.class.getSimpleName();
private Toolbar mToolbar;
private FragmentDrawer drawerFragment;
private List<Category> albumsList;
private ArrayList<NavDrawerItem> navDrawerItems;
String name = new String("Main Grid Screen");
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
navDrawerItems = new ArrayList<NavDrawerItem>();
// Getting the albums from shared preferences
albumsList = AppController.getInstance().getPrefManger().getCategories();
// Insert "Recently Added" in navigation drawer first position
/* Category recentAlbum = new Category(null, getString(R.string.nav_drawer_recently_added), "(100)");
albumsList.add(0, recentAlbum);*/
// Loop through albums in add them to navigation drawer adapter
for (Category a : albumsList) {
navDrawerItems.add(new NavDrawerItem(true, a.getId(), a.getTitle(), a.getPhotoNo()));
// titles a.getTitle()
}
mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
drawerFragment = (FragmentDrawer)
getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
drawerFragment.setUp(R.id.fragment_navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout), mToolbar);
drawerFragment.setDrawerListener(this);
AdView mAdView = (AdView) findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().build();
mAdView.loadAd(adRequest);
displayView(0);
}
private void displayView(int position) {
// update the main content by replacing fragments
Fragment fragment = null;
String albumId = "";
switch (position) {
case 0:
// Recently added item selected
// don't pass album id to grid fragment
/*Log.e(TAG, "GridFragment is creating");
fragment = GridFragment.newInstance(null);*/
albumId = albumsList.get(position).getId();
fragment = GridFragment.newInstance(albumId);
break;
default:
// selected wallpaper category
// send album id to grid fragment to list all the wallpapers
albumId = albumsList.get(position).getId();
fragment = GridFragment.newInstance(albumId);
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.container_body, fragment);
fragmentTransaction.commit();
// set the toolbar title
getSupportActionBar().setTitle(albumsList.get(position).getTitle());
} else {
// error in creating fragment
Log.e(TAG, "Error in creating fragment");
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
Intent intent = new Intent(MainActivity.this,
SettingsActivity.class);
startActivity(intent);
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onDrawerItemSelected(View view, int position) {
displayView(position);
}
}
Here is an XML file
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/coordinatorLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".FullScreenViewActivity">
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/black" >
<ProgressBar
android:id="#+id/pbLoader"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:progressTint="#color/colorPrimary"
android:progressBackgroundTint="#color/white"
android:minHeight="50dp"
android:minWidth="200dp"
android:progress="1">
</ProgressBar>
<!-- Scroll view for fullscreen preview -->
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="none" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:weightSum="1">
<ImageView
android:id="#+id/imgFullscreen"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scaleType="fitXY" />
</LinearLayout>
</HorizontalScrollView>
<!-- Set as wallpaper button -->
<LinearLayout
android:id="#+id/llSetWallpaper"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_marginBottom="10dp"
android:layout_marginLeft="10dp"
android:background="#drawable/btn_rounded_corner"
android:gravity="center_vertical"
android:orientation="horizontal" >
<ImageView
android:layout_width="25dp"
android:layout_height="25dp"
android:src="#drawable/ico_apply" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:text="#string/set_wallpaper"
android:textColor="#color/white"
android:textSize="18dp" />
</LinearLayout>
<!-- Download wallpaper button -->
<LinearLayout
android:id="#+id/llDownloadWallpaper"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="10dp"
android:layout_marginRight="10dp"
android:background="#drawable/btn_rounded_corner"
android:gravity="center_vertical"
android:orientation="horizontal" >
<ImageView
android:layout_width="25dp"
android:layout_height="25dp"
android:src="#drawable/ico_download" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:text="#string/download_wallpaper"
android:textColor="#color/white"
android:textSize="18sp" />
</LinearLayout>
<android.support.v7.widget.Toolbar
android:id="#+id/fragmentToolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:minHeight="?attr/actionBarSize"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
/>
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>

<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="none" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="1">
try change the android:layout_width="wrap_content" to android:layout_width="match_parent". Does it help?

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/coordinatorLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/black" >
<ProgressBar
android:id="#+id/pbLoader"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:progressTint="#color/colorPrimary"
android:progressBackgroundTint="#color/white"
android:minHeight="50dp"
android:minWidth="200dp"
android:progress="1">
</ProgressBar>
<!-- Scroll view for fullscreen preview -->
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="none" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ImageView
android:id="#+id/imgFullscreen"
android:src="#drawable/img_onboarding_1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY" />
</LinearLayout>
</ScrollView>
<!-- Set as wallpaper button -->
<LinearLayout
android:id="#+id/llSetWallpaper"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_marginBottom="10dp"
android:layout_marginLeft="10dp"
android:background="#drawable/icon_cashback"
android:gravity="center_vertical"
android:orientation="horizontal" >
<ImageView
android:layout_width="25dp"
android:layout_height="25dp"
android:src="#drawable/fas_void" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:text="wallpaper"
android:textColor="#color/white"
android:textSize="18dp" />
</LinearLayout>
<!-- Download wallpaper button -->
<LinearLayout
android:id="#+id/llDownloadWallpaper"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="10dp"
android:layout_marginRight="10dp"
android:background="#drawable/icon_cashback_ds"
android:gravity="center_vertical"
android:orientation="horizontal" >
<ImageView
android:layout_width="25dp"
android:layout_height="25dp"
android:src="#drawable/icon_flag_default" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:text="1234"
android:textColor="#color/white"
android:textSize="18sp" />
</LinearLayout>
<android.support.v7.widget.Toolbar
android:id="#+id/fragmentToolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:minHeight="?attr/actionBarSize"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
/>
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>
That is how i modify your layout. I can see the image fill up the screen.

Related

androidx.appcompat.widget.LinearLayoutCompat cannot be cast to android.widget.LinearLayout

I have an Android app. This app has ten activities, the first activity of which is the Splash Screen that is run thats After one or two seconds, the app closes and does not enter the second activity The error I get is:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.myapplication, PID: 4538
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.myapplication/com.example.myapplication.IntroPage}: java.lang.ClassCastException: androidx.appcompat.widget.LinearLayoutCompat cannot be cast to android.widget.LinearLayout
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2665)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Caused by: java.lang.ClassCastException: androidx.appcompat.widget.LinearLayoutCompat cannot be cast to android.widget.LinearLayout
at com.example.myapplication.IntroPage.onCreate(IntroPage.java:45)
at android.app.Activity.performCreate(Activity.java:6679)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2618)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726) 
at android.app.ActivityThread.-wrap12(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6119) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776) 
thats my xml splash screen code:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context=".SplashScreen"
android:background="#color/White">
<androidx.appcompat.widget.AppCompatImageView
android:id="#+id/img_gif"
android:layout_width="match_parent"
android:layout_height="289dp"
android:layout_marginTop="8dp"
android:layout_marginBottom="38dp"
android:src="#drawable/ic_profile"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.296" />
<androidx.core.widget.ContentLoadingProgressBar
android:id="#+id/progress"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_marginTop="4dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.005"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<com.github.ybq.android.spinkit.SpinKitView
android:id="#+id/spin_kit"
style="#style/SpinKitView.WanderingCubes"
android:layout_width="60dp"
android:layout_height="49dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="36dp"
android:layout_marginRight="8dp"
app:SpinKit_Color="#color/orange"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.498"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/img_gif"
app:layout_constraintVertical_bias="0.254" />
<TextView
android:id="#+id/textView2"
android:layout_width="135dp"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginTop="8dp"
android:layout_marginBottom="2dp"
android:gravity="center"
android:text="#string/powerd_by_maede"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/spin_kit"
app:layout_constraintVertical_bias="0.48"
android:layout_marginLeft="8dp"
app:layout_constraintLeft_toLeftOf="parent"
android:layout_marginRight="8dp"
app:layout_constraintRight_toRightOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
thats my xml for sec activity:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#9bfa5e">
<androidx.viewpager.widget.ViewPager
android:id="#+id/viewpager"
android:layout_width="0dp"
android:layout_height="435dp"
tools:layout_constraintRight_creator="1"
tools:layout_constraintBottom_creator="1"
app:layout_constraintBottom_toTopOf="#+id/layoutDots"
app:layout_constraintRight_toRightOf="#+id/layoutDots"
tools:layout_constraintLeft_creator="1"
android:layout_marginBottom="8dp"
app:layout_constraintLeft_toRightOf="#+id/layoutDots" />
<androidx.appcompat.widget.LinearLayoutCompat
android:id="#+id/layoutDots"
android:layout_width="0dp"
android:layout_height="0dp"
android:gravity="center"
android:orientation="horizontal"
tools:layout_constraintBottom_creator="1"
app:layout_constraintBottom_toBottomOf="parent"
tools:layout_constraintLeft_creator="1"
app:layout_constraintLeft_toLeftOf="parent" />
<View
android:layout_width="0dp"
android:layout_height="1dp"
android:alpha=".5"
android:background="#222"
tools:layout_constraintTop_creator="1"
tools:layout_constraintRight_creator="1"
tools:layout_constraintBottom_creator="1"
app:layout_constraintBottom_toTopOf="#+id/btn_next"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
app:layout_constraintRight_toRightOf="parent"
tools:layout_constraintLeft_creator="1"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="#+id/btn_next" />
<Button
android:id="#+id/btn_next"
android:layout_width="88dp"
android:layout_height="50dp"
android:background="#drawable/chevron_right"
android:textColor="#222"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="1"
app:layout_constraintLeft_toRightOf="#+id/btn_skip"
app:layout_constraintRight_toRightOf="parent"
tools:layout_constraintBottom_creator="1"
tools:layout_constraintLeft_creator="1" />
<Button
android:id="#+id/btn_skip"
android:layout_width="88dp"
android:layout_height="48dp"
android:layout_marginBottom="1dp"
android:background="#null"
android:text="رد کردن"
android:textColor="#ffffff"
android:textSize="20sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="#+id/layoutDots"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="1.0"
tools:layout_constraintBottom_creator="1"
tools:layout_constraintLeft_creator="1" />
</androidx.constraintlayout.widget.ConstraintLayout>
thats my splash screen activity:
package com.example.myapplication;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Handler;
import androidx.appcompat.app.AppCompatActivity;
import android.view.WindowManager;
import android.widget.ProgressBar;
import com.github.ybq.android.spinkit.sprite.Sprite;
import com.github.ybq.android.spinkit.style.DoubleBounce;
import java.util.Calendar;
public class SplashScreen extends AppCompatActivity {
SharedPreferences sharedP;
boolean show_intropage=true;
Calendar taqwim = Calendar.getInstance();
int today,date_mod;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash_screen);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
//----progress---------------
ProgressBar progressBar = findViewById(R.id.progress);
Sprite doubleBounce = new DoubleBounce();
progressBar.setIndeterminateDrawable(doubleBounce);
today = taqwim.get(Calendar.DAY_OF_YEAR);
sharedP = getSharedPreferences(Items.SETTINGS, Context.MODE_PRIVATE);
show_intropage = sharedP.getBoolean(Items.INTROPAGE,true);
sharedP.edit().putInt(Items.TODAY, today).apply();
if (show_intropage){
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
Intent Myintent = new Intent(SplashScreen.this,IntroPage.class);
startActivity(Myintent);
finish();
}
},4000);
date_mod = taqwim.get(Calendar.DAY_OF_YEAR);
// Toast.makeText(this, day+"", Toast.LENGTH_SHORT).show();
sharedP.edit().putInt(Items.DATE_MODIFIED, date_mod).apply();
}else {
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
Intent Myintent = new Intent(SplashScreen.this,MainActivity.class);
startActivity(Myintent);
finish();
}
},4000);
}
}
}
thats my sec activity:
package com.example.myapplication;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import androidx.viewpager.widget.PagerAdapter;
import androidx.viewpager.widget.ViewPager;
import androidx.appcompat.app.AppCompatActivity;
import android.text.Html;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.ToxicBakery.viewpager.transforms.RotateUpTransformer;
public class IntroPage extends AppCompatActivity {
ViewPager MyviewPager;
Button btnSkip, btnNext;
private LinearLayout dotsLayout;
private TextView[] dots;
SharedPreferences sharedP;
int [] layout = {R.layout.slide_01,R.layout.slide_02,R.layout.slide_04};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_intro_page);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
MyviewPager = (ViewPager) findViewById(R.id.viewpager);
btnSkip = (Button) findViewById(R.id.btn_skip);
btnNext = (Button) findViewById(R.id.btn_next);
dotsLayout = (LinearLayout) findViewById(R.id.layoutDots);
MyviewPager.setAdapter(new ViewP());
MyviewPager.setPageTransformer(true, new RotateUpTransformer());
sharedP = getSharedPreferences(Items.SETTINGS, Context.MODE_PRIVATE);
addBottomDots(0);
btnNext.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
int Tedad_items = MyviewPager.getCurrentItem()+1;
if (Tedad_items < layout.length) {
MyviewPager.setCurrentItem(MyviewPager.getCurrentItem()+1);
} else {
startActivity(new Intent(IntroPage.this,MainActivity.class));
finish();
}
}
});
btnSkip.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startActivity(new Intent(IntroPage.this,MainActivity.class));
finish();
}
});
MyviewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
#Override
public void onPageSelected(int position) {
addBottomDots(position);
if (position == layout.length - 1) {
// btnNext.setText("Start");
btnNext.setBackgroundResource(R.drawable.check);
btnSkip.setVisibility(View.GONE);
} else {
// btnNext.setText("Next");
btnNext.setBackgroundResource(R.drawable.chevron_right);
btnSkip.setVisibility(View.VISIBLE);
}
}
#Override
public void onPageScrollStateChanged(int state) {
}
});
}
public class ViewP extends PagerAdapter {
#Override
public Object instantiateItem(ViewGroup container, int position) {
View view= LayoutInflater.from(IntroPage.this).inflate(layout[position],container,false);
container.addView(view);
return view;
}
#Override
public int getCount() {
return layout.length;
}
#Override
public boolean isViewFromObject(View view, Object object) {
return view == object;
}
#Override
public void destroyItem(ViewGroup container, int position, Object object) {
// View view = (View)object;
container.removeView((View) object);
}
}
private void addBottomDots(int currentPage) {
dots = new TextView[layout.length];
int[] colorsActive = getResources().getIntArray(R.array.array_dot_active);
int[] colorsInactive = getResources().getIntArray(R.array.array_dot_inactive);
dotsLayout.removeAllViews();
for (int i = 0; i < dots.length; i++) {
dots[i] = new TextView(this);
dots[i].setText(Html.fromHtml("•"));
dots[i].setTextSize(35);
dots[i].setTextColor(colorsInactive[0]);
dotsLayout.addView(dots[i]);
}
if (dots.length > 0)
dots[currentPage].setTextColor(colorsActive[0]);
}
}

The issue is here:
dotsLayout = (LinearLayout) findViewById(R.id.layoutDots);
In your layout you are using a LinearLayoutCompat.
Use:
LinearLayoutCompat dotsLayout;
dotsLayout = findViewById(R.id.layoutDots);

Only image text is showing from firebase in recyclerview fragment Image is not loading [duplicate]

This question already has an answer here:
My recycler view is not showing any firebase images
(1 answer)
Closed 2 years ago.
My images from firebase are not showing in image view but the name of an image is showing in the above text view of the recycler view. Here is my code please help.
FragmentActivity
package com.example.bbeast.HomeActivity;
import android.net.Uri;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import com.example.bbeast.R;
import com.example.bbeast.Upload;
import com.firebase.ui.database.FirebaseRecyclerAdapter;
import com.firebase.ui.database.FirebaseRecyclerOptions;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import com.squareup.picasso.Picasso;
import java.util.List;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
public class fragmentHealthTips extends Fragment {
private RecyclerView mRecyclerView;
private DatabaseReference mDataRef;
private Uri mImageuri;
View view;
public void fragmentHealthTips() {
}
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
view = inflater.inflate(R.layout.healthtips_fragment, container, false);
mRecyclerView =(RecyclerView)view.findViewById(R.id.healthtips_recyclerView);
mRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
mDataRef = FirebaseDatabase.getInstance().getReference().child("Uploads");
return view;
}
#Override
public void onStart() {
super.onStart();
FirebaseRecyclerOptions options =
new FirebaseRecyclerOptions.Builder<HealthTips>()
.setQuery(mDataRef, HealthTips.class)
.build();
FirebaseRecyclerAdapter<HealthTips, hViewHolder> adapter= new FirebaseRecyclerAdapter<HealthTips, hViewHolder>(options) {
#Override
protected void onBindViewHolder(#NonNull final hViewHolder holder, int i, #NonNull final HealthTips healthTips) {
//directly get the values like this
String Iname = healthTips.getName();
String Uimage = healthTips.getImage();
holder.hName.setText(Iname);
Picasso.get()
.load(Uimage)
.into(holder.hImageview);
}
#NonNull
#Override
public hViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.items_healthtips, parent, false);
hViewHolder viewHolder = new hViewHolder(view);
return viewHolder;
}
};
mRecyclerView.setAdapter(adapter);
adapter.startListening();
}
public static class hViewHolder extends RecyclerView.ViewHolder{
TextView hName;
ImageView hImageview;
public hViewHolder(#NonNull View itemView) {
super(itemView);
hName = itemView.findViewById(R.id.healthtips_name);
hImageview = itemView.findViewById(R.id.healthtips_imageView);
}
}
}
Xml file of items.
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/healthtips_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Name"
android:textSize="30sp"
android:layout_gravity="center_horizontal"
android:layout_marginTop="20dp"
android:layout_marginBottom="20dp"/>
<ImageView
android:id="#+id/healthtips_imageView"
android:layout_width="match_parent"
android:layout_height="300dp"
android:layout_marginTop="20dp"
android:background="#drawable/imageview_bg"/>
</LinearLayout>
</androidx.cardview.widget.CardView>
Model class, Healthtips activity.
package com.example.bbeast.HomeActivity;
import java.util.jar.Attributes;
public class HealthTips {
public String name, image;
public HealthTips(){
}
public HealthTips(String name, String image){
this.name = name;
this.image = image;
}
public String getName(){
return name;
}
public void setName(String name){
this.name = name;
}
public String getImage(){
return image;
}
public void setImage(String image){
this.image= image;
}
}
Gradle dependencies.
apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.example.bbeast"
minSdkVersion 15
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
dataBinding {
enabled = true
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
sourceSets {
main {
java.srcDirs = ['src/main/java', 'src/main/java/Admin Activity', 'src/main/java/com.example.bbeast/ui.main/Admin Activity']
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'com.google.android.material:material:1.1.0'
implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
implementation 'com.google.firebase:firebase-database:16.0.4'
implementation 'com.google.firebase:firebase-storage:16.0.4'
implementation 'com.firebaseui:firebase-ui-database:3.2.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
implementation 'com.google.firebase:firebase-analytics:16.0.5'
implementation 'com.google.firebase:firebase-auth:16.0.5'
implementation 'androidx.recyclerview:recyclerview:1.1.0'
implementation 'com.squareup.picasso:picasso:2.71828'
implementation 'com.squareup.picasso:picasso:2.6.0-SNAPSHOT'
}
Please help me in getting an image in the image view. Thank you in advance.

Check
of the UImage is a valid path, normally I would do something like this..
P.S Not a RecyclerView but you get the idea
imageview1 = (ImageView) findViewById(R.id.imageview1);
_path_child_listener = new ChildEventListener() {
#Override
public void onChildAdded(DataSnapshot _param1, String _param2) {
GenericTypeIndicator<HashMap<String, Object>> _ind = new GenericTypeIndicator<HashMap<String, Object>>() {};
final String _childKey = _param1.getKey();
final HashMap<String, Object> _childValue = _param1.getValue(_ind);
Glide.with(getApplicationContext()).load(Uri.parse(_childValue.get("imageUrl").toString())).into(imageview1);
//imageUrl is pushed to Firebase Storage onUploadCompleted
}
#Override
public void onChildChanged(DataSnapshot _param1, String _param2) {
GenericTypeIndicator<HashMap<String, Object>> _ind = new GenericTypeIndicator<HashMap<String, Object>>() {};
final String _childKey = _param1.getKey();
final HashMap<String, Object> _childValue = _param1.getValue(_ind);
}
#Override
public void onChildMoved(DataSnapshot _param1, String _param2) {
}
#Override
public void onChildRemoved(DataSnapshot _param1) {
GenericTypeIndicator<HashMap<String, Object>> _ind = new GenericTypeIndicator<HashMap<String, Object>>() {};
final String _childKey = _param1.getKey();
final HashMap<String, Object> _childValue = _param1.getValue(_ind);
}
#Override
public void onCancelled(DatabaseError _param1) {
final int _errorCode = _param1.getCode();
final String _errorMessage = _param1.getMessage();
}
};
path.addChildEventListener(_path_child_listener);
}
private void initializeLogic() {
}

The method getFragmentManager() is undefined for the type Posisi

I'm trying to implement Google Map in android using Google API, but I am getting the error
The method getFragmentManager() is undefined for the type Posisi
Here my Posisi.java :
package com.ngohung.view;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
public class Posisi extends Activity {
static final LatLng HAMBURG = new LatLng(53.558, 9.927);
static final LatLng KIEL = new LatLng(53.551, 9.993);
private GoogleMap map;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.posisi);
<<<< HERE THE PROBLEM getFragmentManager >>>>
map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
.getMap();
Marker hamburg = map.addMarker(new MarkerOptions().position(HAMBURG)
.title("Hamburg"));
Marker kiel = map.addMarker(new MarkerOptions()
.position(KIEL)
.title("Kiel")
.snippet("Kiel is cool")
.icon(BitmapDescriptorFactory
.fromResource(R.drawable.ic_launcher)));
// Move the camera instantly to hamburg with a zoom of 15.
map.moveCamera(CameraUpdateFactory.newLatLngZoom(HAMBURG, 15));
// Zoom in, animating the camera.
map.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.contact_list, menu);
return true;
}
}
Here my posisi.xml file :
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Posisi" >
<fragment
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />
</RelativeLayout>
I have no idea how to solve this problem...

INVISIBLE button after taking a picture from camera

this is an example to take the picture.
Why button 3 does not INVISIBLE after shooting?
What is the correct way to hide the button after taking a picture?
Please help with thanks.
Note: I TRY IN galaxy 3 mini (18190) >> does not work
import android.content.Intent;
import android.net.Uri;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import java.io.File;
import java.io.IOException;
public class MainActivity extends ActionBarActivity {
private static final int ACTIVITY_START_CAMER_APP = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
public void showButton1(View view) {
EditText editText1 = (EditText) findViewById(R.id.editText);
editText1.setText("1", TextView.BufferType.EDITABLE);
showhideButton();
}
public void hideButton2(View view) {
EditText editText1 = (EditText) findViewById(R.id.editText);
editText1.setText("0", TextView.BufferType.EDITABLE);
showhideButton();
}
public void showhideButton0(View view) {
showhideButton();
}
public void showhideButton() {
EditText editText1 = (EditText) findViewById(R.id.editText);
Button button3 = (Button) findViewById(R.id.button3);
int val = Integer.parseInt(editText1.getText().toString().trim());
if (val == 1) {
Toast.makeText(this, "hide Button3", Toast.LENGTH_SHORT).show();
button3.setVisibility(View.INVISIBLE);}
else if (val ==0) { Toast.makeText(this, "show Button3", Toast.LENGTH_SHORT).show();
button3.setVisibility(View.VISIBLE);
}
}
public void takePhoto(View view) throws IOException {
Intent callCameraApplicationIntent = new Intent();
callCameraApplicationIntent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException e) {
e.printStackTrace();
}
callCameraApplicationIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile));
startActivityForResult(callCameraApplicationIntent, ACTIVITY_START_CAMER_APP);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
EditText txt4 = (EditText) findViewById(R.id.editText);
if (requestCode == ACTIVITY_START_CAMER_APP && resultCode == RESULT_OK) {
txt4.setText("1", TextView.BufferType.EDITABLE);
}
else { return;}
showhideButton();
}
File createImageFile() throws IOException {
File folder = new File(Environment.getExternalStorageDirectory() + "/image1");
boolean success = true;
if (!folder.exists()) {
success = folder.mkdir();
}
File folder2 = new File(Environment.getExternalStorageDirectory() + "/image1/Original_Images");
boolean success2 = true;
if (!folder2.exists()) {
success2 = folder2.mkdir();
}
File image = new File(Environment.getExternalStorageDirectory() + "/image1/Original_Images/1.jpg");
return image;
}
}
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin" tools:context=".MainActivity">
<TextView android:text="#string/hello_world" android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView"
/>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="show Button3"
android:id="#+id/button1"
android:layout_alignParentBottom="true"
android:layout_marginBottom="122dp"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:onClick="hideButton2" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="hide Button3"
android:id="#+id/button2"
android:layout_above="#+id/button1"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:onClick="showButton1" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Button3"
android:id="#+id/button3"
android:layout_below="#+id/textView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/editText"
android:layout_below="#+id/button3"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="58dp"
android:inputType="number"
android:text="0" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="takePhoto"
android:id="#+id/button"
android:onClick="takePhoto"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="showhideButton"
android:id="#+id/button4"
android:onClick="showhideButton0"
android:layout_above="#+id/button"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</RelativeLayout>

I/chromium﹕ [INFO:CONSOLE(1)] "Uncaught ReferenceError: callJS is not defined"

I'm getting the following error in Android Studio logcat:
I/chromium﹕ [INFO:CONSOLE(1)] "Uncaught ReferenceError: callJS is not defined"
I have researched on stackoverflow and tried the suggested answers on similar post with no luck. here
I'm trying to execute javascript from a local html file that is loaded into a WebChromeClient by clicking on a android button. The code is taken from the Chapter 10 example in The Pragmatic Programmers "Hello Android Introducing Google's Mobile development Platform" fourth Edition book.
index.html
<html>
<head>
<script language="JavaScript">
function callJS(arg){
document.getElementById('replaceMe').innerHTML = arg;
{
</script>
</head>
<body>
<h2>WebView</h2>
<p>
Display JavaScript alert
</p>
<p>
Call Android from JavaScript
</p>
<p id="replaceMe"></p>
</body>
</html>
MainActivity
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.webkit.JavascriptInterface;
import android.webkit.JsResult;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
private static final String TAG = "LocalBrowser";
private final Handler handler = new Handler();
private WebView webView;
private TextView textView;
private Button button;
/** Object exposed to JavaScript */
private class AndroidBridge {
#JavascriptInterface // Required in Android 4.2+
public void callAndroid(final String arg) { // must be final
handler.post(new Runnable() {
public void run() {
Log.d(TAG, "callAndroid(" + arg + ")");
textView.setText(arg);
}
});
}
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Find the Android controls on the screen
webView = (WebView) findViewById(R.id.web_view);
textView = (TextView) findViewById(R.id.text_view);
button = (Button) findViewById(R.id.button);
// Rest of onCreate follows...
// Turn on JavaScript in the embedded browser
webView.getSettings().setJavaScriptEnabled(true);
// Expose a Java object to JavaScript in the browser
webView.addJavascriptInterface(new AndroidBridge(),
"android");
// Set up a function to be called when JavaScript tries
// to open an alert window
webView.setWebChromeClient(new WebChromeClient() {
#Override
public boolean onJsAlert(final WebView view,
final String url, final String message,
JsResult result) {
Log.d(TAG, "onJsAlert(" + view + ", " + url + ", "
+ message + ", " + result + ")");
Toast.makeText(MainActivity.this, message, Toast.LENGTH_LONG).show();
result.confirm();
return true; // I handled it
}
});
// Load the web page from a local asset
webView.loadUrl("file:///android_asset/index.html");
// This function will be called when the user presses the
// button on the Android side
button.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
Log.d(TAG, "onClick(" + view + ")");
if (android.os.Build.VERSION.SDK_INT < 19) {
webView.loadUrl("javascript:callJS('Hello from Android')");
}else{
webView.evaluateJavascript("javascript:callJS('Hello from Android')", null);
}
}
});
}
}
activity_main
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<WebView
android:id="#+id/web_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1.0"/>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:layout_weight="1.0"
android:padding="5sp">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="24sp"
android:text="#string/textView"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/button"
android:text="#string/call_javascript_from_android"
android:textSize="18sp"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/text_view"
android:textSize="18sp"/>
</LinearLayout>
</LinearLayout>
Any help is greatly appreciated! Thanks in advance!

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