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How to align item in react native?

I want to align my logo (the grey K) on the middle. i put my justify content and my align items to center the K but it doesn't work. I might do something wrong with my view ?
It's for IOS
<View style={{flex: 1, marginBottom: 50}}>
<View style={{marginLeft: 10, marginRight: 10}}>
{this.renderMonDashboardOpenDb()}
</View>
<View style={{flex: 1, marginLeft: 10, marginRight: 10, alignItems:'center', justifyContent:'center'}}>
<Text
style={{
fontSize: 30,
textAlign: 'center',
color: 'white',
}}>
Klaaap pour défendre tes couleurs !
</Text>
</View>
<View style={{flex: 1, alignItems:'center', justifyContent:'center'}}>
<TouchableOpacity onPress={() => this.props.navigation.navigate('Decibels')}><Image style={styles.logoVert} source={require('./Kvert.png')} /></TouchableOpacity>
</View>
[...]
</View>

Maybe the width of the surrounding View is not 100%?
To figure out you can set the color of the View which is surrounds the TouchableOpacity to red and now you can see if its width is over the whole screen.
If its not, you just have to set the width to 100% and everything will get centered.
Hope this helps maybe!
Good Luck.

Styling Card from react-native-elements: Align Title and icon vertically

I'm using a Card from react-native-elements. Turns out I want to add an icon next to its title but I can't get it to look nice.
Here's my code:
<Card
//title={this.props.item.offer.amount + " " + this.props.item.request.good}
title={
<View style={{justifyContent: 'center'}}>
<View style={{display: "flex",flexDirection: "row", justifyContent: 'center'}}>
<Text style={{fontSize: 18, justifyContent: 'center', fontWeight: 'bold'}}>{this.props.item.offer.amount + " " + this.props.item.request.good}</Text>
<View style={{flexGrow: 1}} />
<Button
buttonStyle={styles.localize}
icon={<Ionicons name="md-locate" color={'white'} size={28} style={{alignSelf: 'center'}}/>}
onPress={() => this.props.navigation.push('Rastrear')}
/>
</View>
<View
style ={{
borderWidth: 0.5,
borderColor:'grey',
margin:2,
}}
/>
</View>
}
titleStyle={{textAlign: 'left'}}
containerStyle={{width: Dimensions.get('window').width-25}}>
...
</Card>
Turns out that looks like this:
What I want is to align the title and the icon vertically. How can I achieve this?
If comment out that "title" line you see inside of the Card and comment my personalized one it looks like this:
As you see the title here's centered vertically.
Update. styles.localize looks like this:
localize: {
padding: 4,
backgroundColor: '#FF5733',
borderColor: '#FF5733',
borderWidth: 2,
width: Dimensions.get('window').width-370,
borderRadius: 10,
justifyContent: 'center'
}

Actually, once you have already declared justifyContent to be center in the parent View, this would have effected the rest of the child Views to have this styling prop. What you can do is to replace justifyContent in the second View housing your Text and Icon components with alignItems. This should vertically align them in the space provided by your parent View.
Also, you can set a height constraint in the parent View and textAlignVertical in the Text for better alignment.
<View style={{justifyContent: 'center', height: 60}}>
<View style={{display: 'flex', flexDirection: 'row', alignItems: 'center'}}>
<Text style={{fontSize: 18, textAlignVertical: 'center', fontWeight: 'bold'}}>12 Mouses</Text>
<View style={{flexGrow: 1}} />
<Button
buttonStyle={styles.localize}
icon={<Icon name="md-locate" color={'white'} size={28} style={{alignSelf: 'center'}}/>}
onPress={() => {}}
/>
</View>
<View
style ={{
borderWidth: 0.5,
borderColor:'grey',
margin:2,
}}
/>
</View>
I have included a Snack here for testing. :)

Width of buttons not changing in react native

I have two buttons in a row separated by the padding of 20 and they have occupied the width needed for the title of the button. Their width doesn't change!
Code for buttons
<View style={styles.buttonContainer}>
<View style={{ paddingLeft: 20 }}>
<Button title={tick} style={styles.button} onPress color="tomato" />
</View>
<View style={{ paddingLeft: 20 }}>
<Button title="X" style={styles.button} onPress color="tomato" />
</View>
</View>
CSS for buttons
buttonContainer: {
flex: 1,
flexDirection: 'row',
justifyContent: 'flex-end'
},
button: {
width: 50, // no matter what value I set here, their width doesn't changes
height: 20,
},

In React Native you need to wrap it with a View and give a width to the parent.
So in your example you should put:
<View style={{ paddingLeft: 20, width: 50, height: 20 }}>
<Button title="X" style={styles.button} color="tomato" />
</View>

Make sure you wrap the button around with an extra View. The Button component only takes up as much width as the title is, no matter how much you set in the style
Also dont forget to add the onPress function, boolean (true) is an invalid prop
export default function App() {
const tick = 'tick';
return (
<View style={styles.buttonContainer}>
<View style={{ paddingLeft: 20 }}>
<Button title={tick} style={styles.button} onPress color="tomato" />
</View>
<View style={styles.buttonStyle}>
<Button title="X" style={styles.button} onPress color="tomato" />
</View>
</View>
);
}
const styles = StyleSheet.create({
buttonContainer: {
flex: 1,
flexDirection: 'row',
justifyContent: 'flex-end',
},
buttonStyle: {
paddingLeft: 20,
width: 200, // this way it works
},
button: {
height: 20,
},
});

Bottom-right align (using Flex-box) in React-Native not working

Making a to-do list type thing to add in my app but when trying to align the 'add todo' button to the bottom right, the button goes anywhere but there.
I'm pretty good with CSS but get pretty messed up when using React CSS/styles. I've played around with different properties, giving a parent a style instead of the child etc.
The class is as follows
class AgendaScreen extends React.Component {
addReminder = () => {
//blank so far :)
};
render() {
return (
<View>
<Text style={styles.titleStyle}>Agenda</Text>
<View style={styles.reminderView}>
<TouchableOpacity style={styles.reminderTouch}>
<Text style={styles.reminderBtn}>+</Text>
</TouchableOpacity>
</View>
</View>
);
}
}
and the styles here
//Agenda screen styles
reminderView: {
flex: 1,
justifyContent: 'flex-end',
},
reminderTouch: {
width: 60,
height: 60,
backgroundColor: 'orange',
borderRadius: 100,
textAlign: 'center',
margin: 20,
},
reminderBtn: {
fontSize: 50,
margin: 10,
alignSelf: 'flex-end',
},
The goal is to align the plus symbol in the middle of the circle and align that circle to the bottom right. With the pasted settings the circle is in the top left and the plus symbol is aligned to the bottom of the circle.
Also, the code posted above wasn't the closest I've gotten as I could easily do it with padding but I'd prefer to use flexbox.

Simply change your style replace with this style and Please add style to your top view
<View style={{flex:1}}>
<Text>Agends</Text>
<View style={styles.reminderView}>
<TouchableOpacity style={styles.reminderTouch}>
<Text style={styles.reminderBtn}>+</Text>
</TouchableOpacity>
</View>
</View>
reminderView: {
flex: 1,
right:0,
margin:5,
bottom:0,
position:'absolute'
},
reminderTouch: {
width: 60,
height: 60,
backgroundColor: 'orange',
borderRadius: 100,
justifyContent:'center',
alignItems:'center',
margin: 20,
},
reminderBtn: {
fontSize: 50,
margin: 5,
alignSelf: 'center',
}
Please check this snack.expo link

Here is how I would do it:
<View style={{
flex: 1,
justifyContent: 'center',
width:'100%',
paddingTop: Constants.statusBarHeight,
backgroundColor: '#ecf0f1',
padding: 8,
}}>
<View
style={{
justifyContent:'center',
alignItems:"center",
width:65,
borderRadius:100,
height:65,
position:'absolute',
bottom:15,
right:15,
backgroundColor:"red",
elevation:10
}}
>
<Icon
name="plus"
size={25}
color="white"
/>
</View>
</View>
What it does is that it makes the round button float on the bottom right corner of the screen. Since you are making a todo app, you would want it to float over the todo list when it becomes longer.
https://snack.expo.io/#ammarahmed/rebellious-donuts

How can I set an icon within a text input?

I am trying to set an icon inside a text input.
I know, there is this answer.
But it is not working as expected since the icon is outside of the TextInput, I need it to be inside.
This is what I am obtaining so far:
This is my code:
<View style={styles.InputContainer}>
<Ionicons
style={styles.IconWithinInput}
name="ios-search"
size={24}
/>
<TextInput
style={styles.AddEditInputs}
onChangeText={text => this.setState({ text })}
value={this.state.text}
/>
</View>
And the styles:
AddEditInputs: {
flex: 1,
height: 40,
borderWidth: 1,
},
IconWithinInput: {
padding: 10,
},
InputContainer: {
flexDirection: 'row',
},
I made the input borders like a rectangle to show you better what I meant to say.
The last design will be like this:
And as you may see, the input border is at the bottom of the icon too.
What else do I need to achieve what I need?

You cannot directly put icon on the textInput. What you can do is wrap the icon and textInput with the view with flexDirection set to row and provide the left padding to the icon so that it seems to appear as in textInput. If you want to do so you can use something like this
<View
style={{
flex: 1,
justifyContent: 'center',
alignItems: 'center'
}}>
<View style={{ flexDirection: 'row' }}>
<View style={{justifyContent: "center", marginRight: 5 }}>
<Image
source={{
uri: 'https://facebook.github.io/react-native/docs/assets/favicon.png',
}}
style={{ width: 10, height: 10 }}
/>
</View>
<TextInput placeholder="Enter your name" />
</View>
</View>
But my suggestion is to use the Input component of react-native-elements as it has leftIcon as props. You can find more information at here

<View style={{flex: 1, flexDirection: 'row'}}>
<Image
source={{uri: 'https://facebook.github.io/react-native/docs/assets/favicon.png'}}
style={{borderWidth: 1,width: 40, height: 40}}
/>
<TextInput
onChangeText={(text) => this.setState({text})}
value={this.state.text}
style={{borderWidth: 1, height: 40, borderColor: 'grey'}}
/>
<View>
Wrap the component with flex and provide width for the icon. You can set the icon by having some wrapper around since it can not be included inside textbox.