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Why my Keyboard not pushing up input view in React Native?

I have a Sign Up screen in React Native, and when I press on the Input fields, my view does not go up therefore I can not see what I am typing. On other screens I have, the view gets pushed up. It feels like on Sign Up screen the "keyboardLayout" is set to "pan", but I did not specify it anywhere...
I am using Expo.
SignUp.js
return(
<View style={styles.container}>
<View style={styles.logoContainer}>
<Image source={logo} style={styles.logoStyle}/>
</View>
<View>
<Formik
initialValues={{email:'', fullname:'',password:'', password_repeat:'', adatkezeles:false}}
onSubmit={values =>{
onRegister_clicked(values.email,values.password,values.fullname)
}}
validationSchema={SignUpFormSchema}
validateOnMount={true}
>
{({handleChange, handleBlur, handleSubmit, values, isValid, errors, setFieldValue}) => (
<>
<View style={[styles.textBox,{
borderColor: values.email.length < 1 || emalValidate(values.email) ? color_theme_light.textBoxBorder : color_theme_light.loginTextInvalid
}]}>
<TextInput
placeholder='Email cím'
autoCapitalize='none'
keyboardType='email-address'
textContentType='emailAddress'
autoFocus={true}
caretHidden={false}
//Formik
onChangeText={handleChange('email')}
onBlur={handleBlur('email')}
value={values.email}
/>
</View>
<View style={[styles.textbox_information,{borderColor: 1 > values.password.length ||values.password.length >= 6 ? color_theme_light.textBoxBorder : color_theme_light.loginTextInvalid}]}>
<TextInput
placeholder='Jelszó'
autoCapitalize='none'
autoCorrect={false}
secureTextEntry={passwordVisible}
textContentType='password'
//Formik
onChangeText={handleChange('password')}
onBlur={handleBlur('password')}
value={values.password}
style={{width:(window.width)*0.75}}
/>
{passwordVisible ?
<TouchableOpacity onPress={onClick_setPasswordVisible}>
<Entypo name="eye-with-line" size={27} color={color_theme_light.iconColor} />
</TouchableOpacity>
:
<TouchableOpacity onPress={onClick_setPasswordVisible}>
<Entypo name="eye" size={27} color={color_theme_light.iconColor} />
</TouchableOpacity>
}
</View>
<View style={[styles.textbox_information,{borderColor:color_theme_light.textBoxBorder}]}>
<TextInput
placeholder='Jelszó megismétlése'
autoCapitalize='none'
autoCorrect={false}
secureTextEntry={passwordVisible}
textContentType='password'
//Formik
onChangeText={handleChange('password_repeat')}
onBlur={handleBlur('password_repeat')}
value={values.password_repeat}
style={{width:(window.width)*0.75}}
/>
</View>
{errors.password_repeat ?
<Text style={{color:'red', textAlign:'center', fontFamily:'QuicksandMedium'}}>{errors.password_repeat}</Text>
: null }
<View style={[styles.textBox,{
borderColor: 1 > values.fullname.length ||values.fullname.length >= 2 ? color_theme_light.textBoxBorder : color_theme_light.loginTextInvalid
}]}>
<TextInput
placeholder='Név'
autoCapitalize='words'
autoCorrect={false}
textContentType='name'
//Formik
onChangeText={handleChange('fullname')}
onBlur={handleBlur('fullname')}
value={values.fullname}
/>
</View>
<View style={{flexDirection:'row', alignItems:'center', justifyContent:'center',paddingTop:10}}>
<TouchableOpacity onPress={() => setFieldValue('adatkezeles', !values.adatkezeles)}>
{!values.adatkezeles ? <Ionicons name="square-outline" size={27} color={color_theme_light.iconColor} />
:
<Ionicons name="ios-checkbox" size={27} color={color_theme_light.iconColor} />
}
</TouchableOpacity>
<Text style={[fontStyles.baseText,{fontSize:13}]}>Elolvastam és elfogadom az </Text>
<TouchableOpacity onPress={() => setAdatkezelesModal(true)}>
<Text style={[fontStyles.baseText, {color:color_theme_light.loginLink, fontSize:13}]}>adatkezelési nyilatkozatot</Text>
</TouchableOpacity>
</View>
{adatkezelesModal ? <OpenAdatkezeles/> : null}
<View style={{alignItems:'center', justifyContent:'center', marginTop:20}}>
<TouchableOpacity onPress={handleSubmit}>
<View style={[styles.button(isValid),styles.shadow]}>
{!buttonLoading.loading ?
<Text style={fontStyles.loginButtonText}>Regisztráció</Text>
: <ButtonLoading/>}
</View>
</TouchableOpacity>
</View>
<View style={styles.signUpContainer}>
<Text style={fontStyles.baseText}>Már rendelkezel egy fiókkal?</Text>
<TouchableOpacity onPress={()=> navigation.navigate('LoginScreen')}>
<Text style={[fontStyles.baseText, {color:color_theme_light.loginLink}]}> Belépés</Text>
</TouchableOpacity>
</View>
</>
)}
</Formik>
</View>
</View>
)
}

you can either use KeyboardAvoidingView or make a custom keyboard avoiding view yourself.
also when using KeyboardAvoidingView dont forget to specify the behavior prop.
here is an example of custom keyboard avoiding view
import React, { useEffect, useRef } from 'react';
import { Keyboard, KeyboardEvent, Animated, Platform } from 'react-
native';
import { heightPercentageToDP as hp } from 'react-native-responsive-screen';
function CustomKeyboardAvoidingView(props: any) {
const heightAnim = useRef(new Animated.Value(hp('100%'))).current
function onKeyboardDidShow(e: KeyboardEvent) {
Animated.spring(heightAnim, {
toValue: hp('100%') - e.endCoordinates.height,
overshootClamping: true,
bounciness: 1,
speed: Platform.OS == 'ios'? 18 : 50,
useNativeDriver: false,
}).start()
}
function onKeyboardDidHide() {
Animated.spring(heightAnim, {
toValue: hp('100%'),
overshootClamping: true,
bounciness: 5,
speed: Platform.OS == 'ios'? 18 : 50,
useNativeDriver: false,
}).start()
}
useEffect(() => {
const SHOW_KEYBOARD_EVENT = Platform.OS === 'ios' ? 'keyboardWillShow' : 'keyboardDidShow'
const HIDE_KEYBOARD_EVENT = Platform.OS === 'ios' ? 'keyboardWillHide' : 'keyboardDidHide'
const showSubscription = Keyboard.addListener(SHOW_KEYBOARD_EVENT, onKeyboardDidShow);
const hideSubscription = Keyboard.addListener(HIDE_KEYBOARD_EVENT, onKeyboardDidHide);
return () => {
showSubscription.remove();
hideSubscription.remove();
};
}, []);
return (
<Animated.View style={[{
height: heightAnim,
}]} >
{props.children}
</Animated.View>
)
}

I managed to solve it with the following way:
<KeyboardAvoidingView>
<ScrollView>
{*Rest of the code*}
</ScrollView>
</KeyboardAvoidingView>
I honestly dont know why, but this moves up my view when I want to type.

Flat List Data is not showing

I am using flatlist for show user input notes in my app. But Flat List is not render any item that i entered. I used static list for testing and it works correctly. but when i enter a text through textinput it is not showing.
const addToDoHandler = () => {
if(userInput == ''){
return;
}
const newTodo = {
id: Math.floor(Math.random() * 1000),
text: userInput,
completed: false,
};
const newTodos = [...todos, newTodo];
setTodos(newTodos);
//clear user input
setUserInput('');
};
const renderItem = ( {item} ) => {
<View style={{backgroundColor:'#6b4d87', marginVertical: 10, flexDirection:'row', alignItems:'center', justifyContent:'space-between', height:60, width:'95%', borderRadius:10 }}>
<View>
<Text style={{color:'black', fontSize:20, fontWeight:'bold'}}>{item.text}</Text>
</View>
<TouchableOpacity onPress={() => deleteHandler(item.id)}>
<TrashIcon size={35} name="trash" style={{color:'#eff9f0'}} />
</TouchableOpacity>
</View>
};
return (
<SafeAreaView style={styles.root}>
<View style={styles.txtInputView}>
<TextInput
value={userInput}
onChangeText={text => setUserInput(text)}
style={styles.textInput}
placeholder={"Enter Your Note..."}
/>
<TouchableOpacity style={styles.addButton} onPress={addToDoHandler}>
<PlusSign size={35} name="add-sharp" style={styles.plusIcon}/>
</TouchableOpacity>
</View>
<View style={{alignItems:'center'}}>
<FlatList
data={todos}
renderItem={renderItem}
keyExtractor={item => item.id}
/>
</View>
</SafeAreaView>
);

You need to return the components from renderItem.
Change it to:
const renderItem = ( {item} ) => (
<View style={{backgroundColor:'#6b4d87', marginVertical: 10, flexDirection:'row', alignItems:'center', justifyContent:'space-between', height:60, width:'95%', borderRadius:10 }}>
<View>
<Text style={{color:'black', fontSize:20, fontWeight:'bold'}}>{item.text}</Text>
</View>
<TouchableOpacity onPress={() => deleteHandler(item.id)}>
<TrashIcon size={35} name="trash" style={{color:'#eff9f0'}} />
</TouchableOpacity>
</View>
);

How can I change a button when I select a item in a flatlist

I saw some questions about it here on SO, but none of them work for me.
So my problem is when I click on the button "Add Friend" all of the buttons change to "remove", and I want to change only the button that I click
Normal
When I click in any button, all of them change to "remove"
My Code is:
export default class Friends extends Component {
state = {
visible: false,
userInfo: null,
requested: null
}
buttonAdd() {
if (this.state.requested === null) {
return (
<View style={styles.buttonContainer}>
<TouchableOpacity style={[styles.button, styles.add]} onPress={() => this.setState({ requested: true })}>
<Text style={{ color: "#fff", fontWeight: "bold" }}>Add Friend</Text>
</TouchableOpacity>
<TouchableOpacity style={[styles.button, styles.remove]}>
<Text style={{ color: "#050505", fontWeight: "bold" }}>Remove</Text>
</TouchableOpacity>
</View>
)
} else if (this.state.requested === true) {
return (
<View style={styles.buttonContainer}>
<TouchableOpacity style={[styles.button, styles.remove, styles.removeBig]} onPress={() => this.setState({ requested: false })} >
<Text style={{ color: "#050505", fontWeight: "bold" }}>Remove</Text>
</TouchableOpacity>
</View>
)
} else {
return (
<View style={styles.buttonContainer}>
<TouchableOpacity style={[styles.button, styles.add]} onPress={() => this.setState({ requested: true })}>
<Text style={{ color: "#fff", fontWeight: "bold" }}>Add Friend</Text>
</TouchableOpacity>
<TouchableOpacity style={[styles.button, styles.remove]}>
<Text style={{ color: "#050505", fontWeight: "bold" }}>Remove</Text>
</TouchableOpacity>
</View>
)
}
}
render() {
const inform = this.props.info
return (
<View>
<FlatList
data={inform}
keyExtractor={item => item.id.toString()}
ListHeaderComponent={this.topComponents()} //ignore this //with the ListHeaderComponent the components will not repeat
renderItem={({ item }) => (
<View style={styles.peopleContainer}>
<TouchableOpacity onPress={() => this.setState({ visible: true, userInfo: item })}> <Image source={item.photo} style={styles.photo} />
</TouchableOpacity>
<View style={styles.geralContent}>
<Text style={styles.name}>{item.name}</Text>
{this.buttonAdd()}
</View>
</View>
)}
/>
</View>
);
}
}
Sorry about the huge code.

There may be several approaches to handle this. This is just my approach to handle this specific issue.
Currently, all of the items sharing the same state. That means if any of the items update the component state, it will affect all the items of the FlatList. To overcome this problem we need to refactor the code so every item has its own state. Here is a snippet of how to do that and fix the problem
const FriendItem = ({ item, onPressPhoto }) => {
const [requested, setRequested] = React.useState(false)
return (
<View style={styles.peopleContainer}>
<TouchableOpacity onPress={() => onPressPhoto({ visible: true, userInfo: item })}>
<Image source={item.photo} style={styles.photo} />
</TouchableOpacity>
<View style={styles.geralContent}>
<Text style={styles.name}>{item.name}</Text>
<View style={styles.buttonContainer}>
{!requested ?
<TouchableOpacity style={[styles.button, styles.add]} onPress={() => setRequested(true)}>
<Text style={{ color: "#fff", fontWeight: "bold" }}>Add Friend</Text>
</TouchableOpacity>
:
null
}
<TouchableOpacity style={[styles.button, styles.remove]}>
<Text style={{ color: "#050505", fontWeight: "bold" }}>Remove</Text>
</TouchableOpacity>
</View>
</View>
</View>
)
}
export default class Friends extends Component {
state = {
visible: false,
userInfo: null,
}
onPressPhoto = ({ visible, userInfo }) => {
//write your logic here to handle on click
}
render() {
const inform = this.props.info
return (
<View>
<FlatList
data={inform}
keyExtractor={item => item.id.toString()}
ListHeaderComponent={this.topComponents()} //ignore this //with the ListHeaderComponent the components will not repeat
renderItem={({ item }) => <FriendItem item={item} onPressPhoto={this.onPressPhoto} />}
/>
</View>
);
}
}

React Native Register Button issue

In the React Native application, the button continues to operate when the information is entered incorrectly on the member entry and registration page. The button is not activated again to re-enter information. Could you help?
In other words, when the information is entered incorrectly or missing, the registration button is rotating continuously.
Please review the screenshot and codes.
Screenshot:
[![Screen shot with the UI][1]][1]
My codes are:
import React from 'react';
import { StyleSheet, Text, View, Image, Dimensions, TextInput, TouchableOpacity, ActivityIndicator } from 'react-native';
import LinearGradient from 'react-native-linear-gradient';
import Icon from 'react-native-vector-icons/Ionicons';
const { height, width } = Dimensions.get('window');
const LogoImg = require('../assets/img/challengelogo.png');
import { KeyboardAwareScrollView } from 'react-native-keyboard-aware-scrollview'
import {connect} from 'react-redux';
import * as appActions from './actions';
export class signupView extends React.Component {
constructor(props){
super(props);
this.state = {
checkboxChecked: false,
checkboxIcon: 'ios-square-outline'
}
}
render() {
const { container, innerContainer, innerImageContainer, buttonView , buttonViewRegister, innerButtonTextView, innerButtonView, termsView} = styles;
return (
<LinearGradient
colors={['#f9a149', '#e86e52', '#d6375c']}
style={ container }>
<KeyboardAwareScrollView
showsVerticalScrollIndicator={false}
keyboardShouldPersistTaps="always"
style={styles.scrollContainer}>
<View style={innerContainer}>
<Image
source={LogoImg}
style={{ width: width*0.45, height: width*0.55 }}
resizeMode={'contain'}
/>
<View style={{flexDirection:'row', alignItems:'center'}}>
<Text style={{color:'#fff', fontSize:18, margin:10, textDecorationLine:'underline'}} >KAYIT OL</Text>
</View>
<View style={styles.searchSection}>
<Icon style={styles.searchIcon} name="ios-person-add" size={30} color="#000"/>
<TextInput
style={styles.input}
placeholder="Kullanıcı Adı"
underlineColorAndroid="transparent"
autoCapitalize = 'none'
autoCorrect = {false}
value = {this.props.r_name}
onChangeText={this._onNameChanged.bind(this)}
autoFocus = { true }
blurOnSubmit = { false }
returnKeyType = { "next" }
onSubmitEditing = {() => {this.mailTextInput.focus()} }
/>
</View>
<View style={styles.searchSection}>
<Icon style={styles.searchIcon} name="ios-mail-outline" size={30} color="#000"/>
<TextInput
ref={(input) => { this.mailTextInput = input; }}
style={styles.input}
placeholder="Mail Adresi"
underlineColorAndroid="transparent"
keyboardType="email-address"
autoCapitalize = 'none'
autoCorrect = {false}
value = {this.props.r_email}
onChangeText={this._onEmailChanged.bind(this)}
blurOnSubmit = { false }
returnKeyType = { "next" }
onSubmitEditing = {() => {this.passwordTextInput.focus()} }
/>
</View>
<View style={styles.searchSection}>
<Icon style={styles.searchIcon} name="md-lock" size={30} color="#000"/>
<TextInput
ref={(input) => { this.passwordTextInput = input; }}
style={styles.input}
placeholder="Şifre"
onChangeText={(searchString) => {this.setState({searchString})}}
underlineColorAndroid="transparent"
secureTextEntry={true}
autoCapitalize = 'none'
autoCorrect = {false}
value = {this.props.r_password}
onChangeText={this._onPasswordChanged.bind(this)}
/>
</View>
{ !this.props.isloadingSignup &&
<TouchableOpacity onPress={this._onSignUpPress}>
<View style={ [buttonView, buttonViewRegister]}>
<View style={innerButtonView}>
<Icon name="ios-person-add" size={30} color="#000" />
</View>
<View style={innerButtonTextView}>
<Text style={{ color:'#FFF', fontSize: 15}}>Kayıt Ol</Text>
</View>
</View>
</TouchableOpacity>
||
<TouchableOpacity>
<View style={ [buttonView, buttonViewRegister]}>
<View style={innerButtonView}>
<Icon name="ios-person-add" size={30} color="#000" />
</View>
<View style={innerButtonTextView}>
<ActivityIndicator color="white" size='small' />
</View>
</View>
</TouchableOpacity>
}
<TouchableOpacity onPress={this._onPressTerms}>
<View style={ [termsView]}>
<Icon name={this.state.checkboxChecked ? 'ios-checkbox': 'ios-square-outline'} size={30} color="#000" />
<Text style={{ color:'#FFF', fontSize: 15, marginLeft: 10}}><Text onPress={this._onPressTermsConditions } style={{ textDecorationLine: "underline"}}> Kullanım koşullarını</Text> Kabul Ediyorum.</Text>
</View>
</TouchableOpacity>
</View>
</KeyboardAwareScrollView>
</LinearGradient>
);
}
_onSignUpPress = () => {
if(this.state.checkboxChecked) {
var registerBody = {
email: this.props.r_email,
password: this.props.r_password,
password_confirmation: this.props.r_password,
name: this.props.r_name
};
this.props.dispatch(appActions.register(registerBody));
} else {
alert("Lütfen önce Kullanıcı şartlarını kabul edin.");
}
}
_onEmailChanged = (email) => {
this.props.dispatch(appActions.emailChanged(email));
}
_onNameChanged = (name) => {
this.props.dispatch(appActions.nameChanged(name));
}
_onPasswordChanged = (password) => {
this.props.dispatch(appActions.passwordChanged(password));
}
_onPressTerms = () => {
this.setState({ checkboxChecked: !this.state.checkboxChecked })
}
_onPressTermsConditions = () => {
this.props.navigator.push({
screen: 'challenge.TermsOfUse',
navigatorStyle: {
navBarHidden: true
}
});
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
alignItems: 'center',
justifyContent: 'flex-start',
},
scrollContainer:{
flex: 1,
},
innerContainer:{
flexDirection:'column',
alignItems:'center',
marginTop: height*0.08,
},
searchSection: {
flexDirection: 'row',
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#fff',
width:width*0.7,
marginTop:7
},
searchIcon: {
paddingTop:5,
paddingBottom:5,
paddingLeft:10,
paddingRight:10
},
input: {
flex: 1,
backgroundColor: '#fff',
color: '#424242',
justifyContent:'center',
},
buttonView:{
width: width*0.7,
marginTop:20,
flexDirection:'row',
},
buttonViewRegister:{
backgroundColor:"#2b74a7"
},
innerButtonView:{
backgroundColor:'#bab9b9',
width:45,
height:42,
justifyContent:'center',
alignItems:'center'
},
innerButtonTextView:{
flex:1,
justifyContent:'center',
alignItems:'center'
},
termsView:{
width: width*0.8,
marginTop:20,
flexDirection:'row',
justifyContent:'center',
alignItems:'center'
}
});
const mapStateToProps = ({ signup }) => {
return { r_email, r_password, r_name, isloadingSignup } = signup;
};
export default connect(mapStateToProps)(signupView);
Firstly, thanks for your response. I couldn't put the codes here because it crossed the character limit. So you can review the action content from this link. http://karahankaraman.com/actions/index.js

I think you are overcomplicating your signup page. Do you really need to dispatch to redux to handle your signup logic? You might need to show us your actions.js file if this continues.
Meanwhile do this:
{ !this.props.isloadingSignup ?
<TouchableOpacity onPress={this._onSignUpPress}>
<View style={ [buttonView, buttonViewRegister]}>
<View style={innerButtonView}>
<Icon name="ios-person-add" size={30} color="#000" />
</View>
<View style={innerButtonTextView}>
<Text style={{ color:'#FFF', fontSize: 15}}>Kayıt Ol</Text>
</View>
</View>
</TouchableOpacity>
:
<View style={ [buttonView, buttonViewRegister]}>
<View style={innerButtonView}>
<Icon name="ios-person-add" size={30} color="#000" />
</View>
<View style={innerButtonTextView}>
<ActivityIndicator color="white" size='small' />
</View>
</View>
}

Where to implement my function when using map for iteration?

To iterate and add views dynamically from array, I'm using following code.
export default class CreateFeedPost extends Component {
constructor(props) {
super(props);
this.state = {
selectedImages: ["1", "2", "3"]
};
}
render() {
let animation = {};
let color = Platform.OS === "android"
? styleUtils.androidSpinnerColor
: "gray";
return (
<View style={{ flex: 1, flexDirection: "column" }}>
<View style={styles.topView}>
<View style={styles.closeButtonView}>
<TouchableHighlight
underlayColor="transparent"
style={styles.closeButton}
onPress={this._closeButtonClicked.bind(this)}
>
<Icon name="times" color="#4A4A4A" size={20} />
</TouchableHighlight>
</View>
<View style={styles.postButtonView}>
<TouchableHighlight
underlayColor="transparent"
style={styles.postButton}
onPress={this._postButtonClicked.bind(this)}
>
<Text style={styles.postButtonText}>Post</Text>
</TouchableHighlight>
</View>
</View>
<View style={styles.profileContainer}>
<View style={{ width: 65, height: 65, padding: 10 }}>
<Image
source={{ uri: global.currentUser.USER_PROFILE_PIC }}
style={styles.profileImage}
/>
</View>
<View style={[styles.middleTextView]}>
<Text style={[styles.memberName]}>
{global.currentUser.USER_NAME}
</Text>
</View>
</View>
<Animated.ScrollView
style={{ flex: 1 }}
scrollEventThrottle={1}
showsVerticalScrollIndicator={false}
{...animation}
>
<View>
<TextInput
ref="postTextInputRef"
placeholder="So, What's up?"
multiline={true}
autoFocus={true}
returnKeyType="done"
blurOnSubmit={true}
style={styles.textInput}
onChangeText={text => this.setState({ text })}
value={this.state.text}
onSubmitEditing={event => {
if (event.nativeEvent.text) {
this._sendCommentToServer(event.nativeEvent.text);
this.refs.CommentTextInputRef.setNativeProps({ text: "" });
}
}}
/>
</View>
</Animated.ScrollView>
<KeyboardAvoidingView behavior="padding">
<ScrollView
ref={scrollView => {
this.scrollView = scrollView;
}}
style={styles.imagesScrollView}
horizontal={true}
directionalLockEnabled={false}
showsHorizontalScrollIndicator={false}
decelerationRate={0}
snapToInterval={100}
snapToAlignment={"start"}
contentInset={{
top: 0,
left: 0,
bottom: 0,
right: 0
}}
>
{this.state.selectedImages.map(function(name, index) {
return (
<View style={styles.imageTile} key={index}>
<View style={styles.imageView}>
<TouchableHighlight
underlayColor="transparent"
style={styles.imageRemoveButton}
onPress={() => this._imageRemoveButtonClicked.bind(this)}
>
<Icon name="times" color="#4A4A4A" size={20} />
</TouchableHighlight>
</View>
</View>
);
})}
</ScrollView>
<TouchableHighlight
underlayColor="transparent"
style={styles.cameraButton}
onPress={this._cameraButtonClicked.bind(this)}
>
<View style={styles.cameraButtonView}>
<Icon name="camera" color="#4A4A4A" size={20} />
<Text style={styles.cameraButtonText}>Add Pic</Text>
</View>
</TouchableHighlight>
</KeyboardAvoidingView>
</View>
);
}
_closeButtonClicked() {
this.props.navigator.pop();
}
_postButtonClicked() {}
_cameraButtonClicked() {
this.props.navigator.push({
title: "All Photos",
id: "photoBrowser",
params: {
limit: 3,
selectedImages: this.state.selectedImages
}
});
}
_imageRemoveButtonClicked() {
console.log("yes do it");
}
}
I'm loading code in the render method. If I write the function imageRemoveButtonClicked outside render method, it's giving an error saying that 'Cannot read property bind of undefined'. Don't know what to do. Can some one please help me in this.

Use arrow functions and class property feature. For more information about binding patterns read this article. Try to add your method as:
export class App extends Component {
yourMapFunction = () => {
yourCode...
}
}

I believe the problem is that you are not using an arrow function as the argument to this.state.selectedImages.map(). If you want to access this inside an inner function, you should use the arrow function syntax. The standard syntax does not capture this.
this.state.selectedImages.map((name, index) => {
return (...);
})