I have a small ReactNative app in Expo Snack that includes a single components with a TouchableOpacity.
export default function AssetExample() {
function clicked() {
alert('clicked')
}
return (
<View style={styles.container}>
<TouchableOpacity onPress={clicked()}>
<Text style={styles.paragraph}>
Click the icon
</Text>
<Image style={styles.logo} source={require('../assets/snack-icon.png')} />
</TouchableOpacity>
</View>
);
}
Every time the app is started the alert is shown, meaning TouchableOpacity triggers onPress. Why? And how can I circumvent this?
You should pass the reference of your function to TouchableOpacity like this
<TouchableOpacity onPress={clicked}>
</TouchableOpacity>
or pass it with arrow function
<TouchableOpacity onPress={()=> clicked()}>
</TouchableOpacity>
so it will be called inside TouchableOpacity component whenever required (button click), otherwise it will be called only one time during render phase.
See these docs for handling events in React https://reactjs.org/docs/handling-events.html
I have a file called SplashScreen.js with a StackNavigator. Sample code:
Inside my SplashScreen.js I have a component called "Login" and INSIDE Login I have a component called "TouchbleOpacity"
What I need is to change the "onPress" event of my TouchbleOpacity component. So I'll be able to navigate in my Navigator (that are inside my SplashScreen.js). The onPress event should look similar to this: onPress={() => navigation.navigate('TelaCadastrar01')
If there is a better way to change the onPress event of my TouchbleOpacity, please tell me, thanks!
I don't know if this is what you are looking for, but i'll give it a try:
In your Login Component you do:
//first button
<TouchableOpacity onPress={this.props.onPress} >
<Text> ... </Text>
</TouchableOpacity>
//second button
<TouchableOpacity onPress={this.props.onPressButton2} >
<Text> ... </Text>
</TouchableOpacity>
Now you are able to pass any onPress function to your Login Component. e.g.
<Login onPress={() => navigation.navigate('TelaCadastrar01')} onPressButton2={() => console.log('second scene')}/>
I'm facing a weird problem. In my react native app, if I set onPress event to View it is not triggered but if I set the same to Text inside View, it fires. What am I missing here?
<View style={{backgroundColor: "red", padding: 20}}>
<Text onPress={()=> {
console.log('works');
}
}>X</Text>
</View>
<View style={{backgroundColor: "red", padding: 20}} onPress={()=> {
console.log('does not work');
}
}>
<Text>X</Text>
</View>
Why is this so? Is this an issue with React Native? I'm using version 0.43
You can use TouchableOpacity for onPress event.
View doesn't provide onPress prop.
<TouchableOpacity style={{backgroundColor: "red", padding: 20}} onPress={()=> {
console.log('does not work');
}
}>
<Text>X</Text>
</TouchableOpacity>
You can wrap the view with a TouchableWithoutFeedback and then use onPress and friends like usual. Also you can still block pointerEvents by setting the attribute on on the child view, it even blocks pointer events on the parent TouchableWithoutFeedback, its interesting, this was my need on Android, I didn't test on iOS:
https://facebook.github.io/react-native/docs/touchablewithoutfeedback.html
<TouchableWithoutFeedback onPressIn={this.closeDrawer}>
<Animated.View style={[styles.drawerBackground, styleBackground]} pointerEvents={isOpen ? undefined : 'none'} />
</TouchableWithoutFeedback>
Alternatively you can also provide onStartShouldSetResponder to your view, like so:
<View onStartShouldSetResponder={() => console.log("View click")}>
// some code here
</View>
You can use TouchableOpacity, TouchableHighlight, TouchableNativeFeedback, to achieve this. View component doesn't provide onPress as props. So you use these instead of that.
<TouchableNativeFeedback
onPress={this._onPressButton}
</TouchableNativeFeedback>
OR
<TouchableHighlight onPress={this._onPressButton}>
</TouchableHighlight>
OR
<TouchableOpacity onPress={this._onPressButton}>
</TouchableOpacity>
onPress doesn't work on <View> tag use <TouchableOpacity> instead of View
<View>
<TouchableOpacity onPress={() => 'call your function here'}>
</TouchableOpacity>
</View>
For this issue you can make use either
touchable(opacity,withoutfeedback,....)
or Pressable component which is currently available in react native Package like,
<TouchableOpacity onPress={()=>console.log("Pressed")}>
....
</TouchableOpacity>
or
<Pressable onPress={()=>console.log("Pressed")}>
....
</Pressable>
2021
If you're looking for a more extensive and future-proof way to handle touch-based input, check out the Pressable API.
Source: https://reactnative.dev/docs/touchablewithoutfeedback
A new pressable component is provided in 0.67 of react native, which can solve your problem. It runs anywhere
enter image description here
well we can make the View have a onPress props onStartShouldSetResponder and onResponderGrant
<View
onStartShouldSetResponder={() => true}
onResponderGrant={() => console.log("view pressed")}
>
</View>
You can use TouchableOpacity for that purpose
<TouchableOpacity onPress={() => {your code here}}>
//Your inner views here
</TouchableOpacity>
In View onPress will not work because onPress event is not supported in view tag.That is why it is not working but you can go to this link https://reactnative.dev/docs/view
You can use Pressable components which is react native core component and wrap your View or any other component in Pressable which don't have onPress prop.
Like this:
<Pressable onPress={()=>console.log('pressed')}>
<View>
<Text>Some Text</Text>
</View>
</Pressable>
Pressable Documentation
For anybody who's lookig for a solution to this, as of RN 0.63, there is a new Pressabe api. It might have rolled out a couple versions earlier but it works great for such use cases.
<Pressable onPress={onPressFunction}>
<Text onPress={() => {
console.log('works');
}}>X</Text>
</Pressable>
I’m writing a React Native app and I want to detect tap/clicks anywhere on the screen so I put an onClick handler on my <View> element but it doesn’t seem to be working. Here is my render function:
<View style={styles.container} onClick={this.onClick}>
<Text style={styles.welcome}>
Tap to change the background
</Text>
</View>
What do I need to do?
For making any element to handle touch/click events in a React-Native UI, you need to put the element inside a TouchableOpacity, TouchableWithoutFeedback, TouchableNativeFeedback or TouchableHighlight element:
<TouchableHighlight onPress = { this.onClick }>
<View style={styles.container}>
<Text style={styles.welcome}>
Tap to change the background
</Text>
</View>
</TouchableHighlight>
Hope that helps.
In React Native version > 55.3 you make check onPress events into your View if use onStartShouldSetResponder props.
Like example:
<View
style={{ flex: 1 }}
onStartShouldSetResponder={() => console.log('You click by View')}
>
<ScrollView
refreshControl={
<RefreshControl
refreshing={this.state.refreshing}
onRefresh={this.onRefresh} />
}
>
<Text>Awesome</Text>
</ScrollView>
</View>
In example I showed how you can get onPress event on View and not blocking other event behind them. Refresh control still work correct.
In my case the following works fine. You can use onTouchStart and onTouchEnd handlers on any View via props, for example:
<View onTouchStart={() => this.doSomething()} />
More information
This worked for me...
onTouchEnd={() => alert('TAPPED')}
The easiest way to do that:
<TouchableOpacity style={styles.container} onPress={()=> whateverFunc(parameter)}>
<Text style={styles.welcome}>
Tap to change the background
</Text>
</TouchableOpacity>
So, you need to replace the 'View' component to a 'TouchableOpacity' or any other Touchable component and you also need to replace the 'onClick' prop to 'onPress'. That's all. The wrapping of a view with a TouchableWhatever component is not necessary at all.
i want to generate a button click dynamically for a TouchableOpacity in react-native,
i didn't find anything about that,
all i want is to call the TouchableOpacity onPress from a fuction (or see its effect on the button)
in titanium we were doing $.button.click
i tried using Animated but no luck
https://facebook.github.io/react-native/docs/animations.html
so can anybody help? thanks in advance
It's really inadvisable but something like this should work:
simulatePress() {
this.touchable.props.onPress();
}
render() {
return (
<TouchableOpacity ref={component => this.touchable = component} onPress={() => console.log('onPress')}>
<Text>Tap me</Text>
</TouchableOpacity
);
}
Really though, what you are trying to achieve? There is likely a better way to do it.