Get Touch Event on entire screen - javascript

I have a disappearing header which I want to bring back into the view on a single tap anywhere on the screen. But if I am wrapping the entire <View> inside a <TouchableX> component the PanResponder stops working. Is there a hack around this?

You do not need to warp it with Touchable component.
Add next props to root View.
onResponderGrant - make View handle touch
onStartShouldSetResponder - make View handle start

To elaborate #Nicholas Chong advice, here is the example that works for me fine. You can use onTouchStart and onTouchEnd handlers on any View via props:
<View
onTouchStart={() => doSomething()}
style={{ width: '100%', height: '100%' }}
/>
More information

onResponderGrant not working for me, and I use onTouchEnd to trigger when tap the screen, this will work

This would be an example of a implementation with a onResponderGrant
import React, { Component } from 'react';
import {
Platform,
StyleSheet,
Text,
View,
TouchableOpacity
} from 'react-native';
const instructions = Platform.select({
ios: 'Press Cmd+R to reload,\n' +
'Cmd+D or shake for dev menu',
android: 'Double tap R on your keyboard to reload,\n' +
'Shake or press menu button for dev menu',
});
export default class App extends Component<{}> {
constructor() {
super();
this.startTouch = this.startTouch.bind(this);
this.stopTouch = this.stopTouch.bind(this);
this.onTouchE = this.onTouchE.bind(this);
}
startTouch() {
console.debug("You start so don't stop!??");
}
stopTouch() {
console.debug("Why you stop??");
}
onTouchE() {
console.debug("Touchable Opacity is working!!");
}
render() {
return (
<View style={styles.container}
onResponderGrant = { () => this.startTouch() }
onResponderRelease = { () => this.stopTouch() }
onStartShouldSetResponder = { (e) => {return true} }
>
<TouchableOpacity
onPress = { () => this.onTouchE() }
>
<Text style={styles.welcome}>
Welcome to React Native!
</Text>
</TouchableOpacity>
<Text style={styles.instructions}>
To get started, edit App.js
</Text>
<Text style={styles.instructions}>
{instructions}
</Text>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: 'cornflowerblue',
},
welcome: {
fontSize: 20,
textAlign: 'center',
margin: 10,
},
instructions: {
textAlign: 'center',
color: '#333333',
marginBottom: 5,
},
});

I have included an example of using onResponderGrant and onStartShouldSetResponder inside of a View component.
(Thanks to your previously written answer, #Mr Br)
Definitions
import { Modal, Text, View } from "react-native";
import { useState } from "react";
const [visible, setVisible] = useState(false);
const dismissFunction = () => setVisible(false);
Presentation
<Modal visible={visible} transparent style={{ alignItems: "center", height: "100%", }} >
<View onResponderGrant={dismissFunction} onStartShouldSetResponder={dismissFunction} style={{ flex: 1, backgroundColor: "#1c1c1c75", flexDirection: "column", justifyContent: "flex-end", alignItems: "center" }} >
<View style={{ backgroundColor: "#1E2124", borderRadius: 30, justifyContent: "center", alignItems: "center", height: "30%", shadowColor: "#ffffff10", shadowOpacity: 10, shadowOffset: { width: 0, height: -5 }, width: "101%" }}>
<Text style={{ textAlign: "center", color: "#ffffff", fontSize: 24, marginLeft: "10%", marginRight: "10%", marginBottom: "10%", marginTop: "5%" }}>The message of your modal!</Text>
</View>
</View>
</Modal>
Don't forget to run setVisible(true) somewhere to get the modal to show!

Related

Pressables in react-native app wont't work

I have two very simple components and the pressables I have in my Start component just won't work, not the navigation or the console.log(), I can't even inspect them with the element inspector... I am using ImageBackground of react native for the first time so i don't know if this has something to do with it? Although, i did try removing it and i still couldn't press anything...
Here is my code for the Start component:
import React from 'react';
import {ImageBackground, Pressable, StyleSheet, Text, View} from 'react-native';
import { normalize } from '../../utils/helper';
import { colors } from '../../utils/styles';
const image = require('../../assets/images/start-page/start-page-background.png');
export default function Start({navigation}) {
const handleStartPress = () => {
console.log('hi');
navigation.navigate('Home');
};
return (
<View style={styles.container}>
<ImageBackground source={image} style={styles.image}>
<Pressable style={styles.startButton} onPress={() => handleStartPress()}>
<Text style={styles.startText}>Έναρξη</Text>
</Pressable>
<View style={styles.footer}>
<Pressable style={[styles.footerPressable, styles.conditions]}><Text style={styles.footerText}>blah</Text></Pressable>
<Text style={styles.code}>blah</Text>
<Pressable style={[styles.footerPressable, styles.policy]} onPress={() => console.log('policy')}><Text style={styles.footerText}>blah</Text></Pressable>
</View>
</ImageBackground>
</View>
);
}
const styles = StyleSheet.create({
container: {
flex: 1,
},
image: {
flex: 1,
},
startButton: {
backgroundColor: colors.main.blue,
borderRadius: normalize(10),
paddingHorizontal: normalize(40),
paddingVertical: normalize(12),
alignSelf: 'center',
position: 'absolute',
bottom: normalize(180),
},
startText: {
color: 'white',
fontSize: normalize(30),
},
footer: {
paddingVertical: normalize(10),
position: 'absolute',
bottom: normalize(15),
},
conditions: {
borderRightColor: 'black',
borderRightWidth: normalize(1),
paddingLeft: normalize(10),
paddingRight: normalize(10),
},
policy: {
paddingLeft: normalize(10),
//zIndex: 999,
},
footerText: {
fontSize: normalize(16),
lineHeight: normalize(16),
color: 'black',
},
code: {
color: colors.main.blue,
fontWeight: '700',
fontSize: normalize(16),
lineHeight: normalize(16),
borderRightColor: 'black',
borderRightWidth: normalize(1),
paddingHorizontal: normalize(10),
},
});
I ran your code and it works fine. But I don't have any more information on your project (such as your RN version), so I can only make some educated guess.
The non-responsiveness can be caused by the other parts of your application that block your JS thread and prevent the event loop from passing message from the queue to the stack.
To debug this, you can toggle the perfMonitor to see if the JS thread frame rate has dropped to 0. You can also try not to render other elements (e.g. render solely this button in your App.tsx) in your app to see if the issue is gone.

How to stop a sound when the stop button is clicked in snack expo?

I am making an app which has some buttons that play different sounds, and a stop button which stops all the sounds. However, it works only when the current sound playing stops, and does not play any other music. Is the function incorrect? Here is the code(the other buttons are written in the same way as the first button):
import React, { Component } from 'react';
import { Button, View, Text, Alert, TouchableOpacity } from 'react-native';
import {Audio} from "expo-av";
class Button1 extends React.Component {
playSound1 = async () => {
await Audio.Sound.createAsync(
{uri:"https://s1.yt.ninja/#download/23481-602b351bd79f3-10112020-252-320-file-10112020/mp3/lcVNSPXM2Nc/The%2BUntamed%2BOST%2B%257C%2B%25E9%2599%2588%25E6%2583%2585%25E4%25BB%25A4%2BMain%2BThemed%2BSong%25E3%2580%258A%25E6%2597%25A0%25E7%25BE%2581%2BWu%2BJi%25E3%2580%258B%25E2%2580%2594%25E2%2580%2594Xiao%2BZhan%2B%25E3%2580%2581Wang%2BYi%2BBo%2BDuet.mp3/9f05bbbdbd17b34a35bd40794186a567e755c50ee15ef6c77345bf1eaf7e8124-1"},
{shouldPlay:true}
)
}
render() {
return (
<TouchableOpacity style={{
backgroundColor : "#D1A5C9",
marginTop: 30,
marginLeft: 25,
width: 280,
height: 40,
alignItems: "center"
}}
onPress={this.playSound1}>
<Text style={{
color:"white",
fontSize: 30,
}}>Sound 1</Text>
</TouchableOpacity>
);
}
}
class StopButton extends React.Component{
render(){
return(
<TouchableOpacity style={{
backgroundColor : "black",
marginTop: 50,
marginLeft: 40,
width: 250,
height: 40,
alignItems: "center"
}}
onPress={() => {
Audio.setIsEnabledAsync(false)
}}>
<Text style={{
color:"white",
fontSize: 30,
}}>Stop Sound</Text>
</TouchableOpacity>
)
}
}
export default class App extends React.Component {
render() {
return (
<View>
<Button1/>
<Button2/>
<Button3/>
<Button4/>
<Button5/>
<StopButton/>
</View>
);
}
}
It will work, but only on your phone, not the simulators or the web options
But once you stop it, it wont start sound again ever, unless you add this
class SoundButton6 extends Component {
render() {
return (
<TouchableOpacity
style={{
backgroundColor: 'red',
marginLeft: 100,
borderWidth: 1,
borderColor: 'black',
alignItems: 'center',
justifyContent: 'center',
width: 200,
height: 100,
borderRadius: 100,
marginTop: 10,
}}
onPress={ () => {
Audio.setIsEnabledAsync(true);
}}>
<Text
style={{
fontWeight: 'bold',
fontSize: 35,
}}>
Resume
</Text>
</TouchableOpacity>
);
}
}
a resume button
Have a try by using the instance of the Audio.Sound to stop the audio.
For Ex:
const {
sound: soundObject,
status,
} = await Audio.Sound.createAsync(require('./assets/sounds/hello.mp3'), { shouldPlay: true });
and on the stop button action process the soundObject to stop the music:
onStop = async () => {
soundObject.stopAsync()
}
for more details check out the official docs from expo AV
https://docs.expo.io/versions/latest/sdk/audio/#audiosetaudiomodeasyncmode

React Native: How does this Component call?

Can someone help me with this Component, i want to make like this, but dont know how this white frames called? Can someone tell me this? And if we press that yellow Touchable Opacity it is showing whole Text, and if we press again it will became smaller!
Thanks in Advance , I am Just new in RN
You can easily create that card with a little bit of CSS.
Below is the sample app which shows you how you can achieve that.
Working Example: Expo Snack
import React, { useState, useEffect } from 'react';
import {
Text,
View,
StyleSheet,
FlatList,
Image,
TouchableOpacity,
} from 'react-native';
import { AntDesign } from '#expo/vector-icons';
import Constants from 'expo-constants';
import { newsFeed } from './news';
export default function App() {
const [news, setNews] = useState(newsFeed);
const showFull = (index) => {
const temp = [...news];
temp[index].toggle = !temp[index].toggle;
setNews(temp);
};
return (
<View style={styles.container}>
<FlatList
data={news}
renderItem={({ item, index }) => (
<View style={styles.card}>
<Text style={styles.title}>{item.title}</Text>
<Text style={styles.paragraph}>
{item.toggle ? item.desc : `${item.desc.substr(0, 100)}...`}
</Text>
{item.toggle && (
<Image source={{ uri: item.img }} style={styles.img} />
)}
<View style={styles.bottomBar}>
<Text style={styles.date}>4/02/2021</Text>
<TouchableOpacity onPress={() => showFull(index)}>
<View style={{ flexDirection: 'row', alignItems: 'center' }}>
<Text style={styles.moreBtn}>
{!item.toggle ? 'More' : 'Less'}
</Text>
<AntDesign
name={item.toggle ? 'up' : 'down'}
size={12}
color="orange"
/>
</View>
</TouchableOpacity>
</View>
</View>
)}
/>
</View>
);
}
const styles = StyleSheet.create({
bottomBar: {
marginVertical: 5,
flexDirection: 'row',
justifyContent: 'space-between',
},
container: {
flex: 1,
justifyContent: 'center',
paddingTop: Constants.statusBarHeight,
backgroundColor: '#ecf0f1',
padding: 8,
},
card: {
padding: 10,
backgroundColor: 'white',
marginVertical: 5,
borderRadius: 10,
},
title: {
marginVertical: 5,
fontSize: 18,
fontWeight: 'bold',
},
img: {
flex: 1,
height: 100,
borderRadius: 10,
marginVertical: 5,
},
paragraph: {
fontSize: 14,
},
date: {
fontSize: 12,
color: 'rgba(21,21,21,0.5)',
},
moreBtn: {
fontSize: 12,
color: 'orange',
marginRight: 10,
},
});
actually this card is not a component you can design it using css and if you want to create a component which you can reuse then you can make one component and reuse it as you want and for this card either you can use your own css or a library called native-base which is
like bootstrap but it is used in react-native
you can read about native base here for more information
https://nativebase.io/
and if you want to create card of your own then make a separate file and make a funcional card component in it
and call it wherever you like
import myCustomCard from './card'
and to use it you use like this in your jsx
<myCustomCard />
and if you want to know more about how to pass props and else you can checkout official docs of the react native here
https://reactnative.dev/docs/getting-started

About site display of React-native application

Site display on webview
Current practice, I am creating a browser application using React-native.
Google and other URLs will be displayed. However, the specific site is not displayed, it becomes a white screen.
※The address is https, and that site is displayed properly on PC or real machine Google Chrome.
Does this mean that there is a flaw in the SSL of the site?
please tell me.
We are doing site designation with source = {{uri: 'https://www.google.com/'}} in the code below.
##App.js
/**
* Sample React Native App
* https://github.com/facebook/react-native
* #flow
*/
const WEBVIEW_REF = "WEBVIEW_REF";
import React, { Component } from "react";
import { WebView } from "react-native";
import {
AppRegistry,
Platform,
StyleSheet,
Text,
View,
Button,
Image
} from "react-native";
const instructions = Platform.select({
ios: "Press Cmd+R to reload,\n" + "Cmd+D or shake for dev menu",
android:
"Double tap R on your keyboard to reload,\n" +
"Shake or press menu button for dev menu"
});
export default class App extends Component {
constructor(props) {
super(props);
this.state = {
canGoBack: false,
canGoForward: false,
loading: false
};
}
render() {
return (
<View style={{ flex: 1 }}>
<View style={{ backgroundColor: "#FE9A2E", flex: 0.15 }}>
<Image
source={require("./header.png")}
style={{ alignSelf: "center" }}
/>
</View>
<View style={{ flex: 0.8 }}>
<WebView
ref={WEBVIEW_REF}
source={{ uri: "https://www.google.co.jp/" }}
onNavigationStateChange={this.onNavigationStateChange.bind(this)}
/>
</View>
<View style={{ alignSelf: "center", flex: 0.08, flexDirection: "row" }}>
<View style={styles.buttonContainer}>
<Button
onPress={this.onBack.bind(this)}
title="←"
color="#FE9A2E"
/>
</View>
<View style={styles.buttonContainer}>
<Button
onPress={this.onReload.bind(this)}
title="↺"
color="#FE9A2E"
/>
</View>
<View style={styles.buttonContainer}>
<Button
onPress={this.onForward.bind(this)}
title="→"
color="#FE9A2E"
/>
</View>
</View>
</View>
);
}
onBack() {
this.refs[WEBVIEW_REF].goBack();
}
onForward() {
this.refs[WEBVIEW_REF].goForward();
}
onReload() {
this.refs[WEBVIEW_REF].reload();
}
onNavigationStateChange(navState) {
this.setState({
canGoBack: navState.canGoBack,
canGoForward: navState.canGoForward,
loading: navState.loading
});
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: "center",
alignItems: "center"
},
welcome: {
fontSize: 20,
textAlign: "center",
margin: 10
},
instructions: {
textAlign: "center",
color: "#333333",
marginBottom: 5
},
buttonContainer: {
width: 100,
margin: 6
}
});
AppRegistry.registerComponent("App", () => App);
you should give a width a height style to your WebView tag. Try this and let me know.
add this hier in your webView tag style={styles.webViewStyles}, then add the styles below in your StyleSheet. webViewStyles:{height: 100, width: 100}, dont forget the comma before you add the styles in your StyleSheet.

How to add a button in React Native?

I´m confused with this whole "no CSS" thing, but I understand why it's beneficial. All I want to do is place a button in the middle of the screen but I don't understand how styling works in React yet. This is my code:
var tapSpeed = React.createClass({
render: function() {
return (
<View style={styles.container}>
<Text style={styles.welcome}>
Tap me as fast as you can!
</Text>
<View style={styles.button}>
!
</View>
</View>
);
}
});
var styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#FFCCCC'
},
welcome: {
fontSize: 20,
textAlign: 'center',
margin: 10
},
button: {
textAlign: 'center',
color: '#ffffff',
marginBottom: 7,
border: 1px solid blue,
borderRadius: 2px
}
});
Update: use built-in Button component.
Deprecated:
Wrap your View into TouchableHighlight for iOS and TouchableNativeFeedback for Android.
var {
Platform,
TouchableHighlight,
TouchableNativeFeedback
} = React;
var tapSpeed = React.createClass({
buttonClicked: function() {
console.log('button clicked');
},
render: function() {
var TouchableElement = TouchableHighlight;
if (Platform.OS === 'android') {
TouchableElement = TouchableNativeFeedback;
}
return (
<View style={styles.container}>
<Text style={styles.welcome}>
Tap me as fast as you can!
</Text>
<TouchableElement
style={styles.button}
onPress={this.buttonClicked.bind(this)}>
<View>
<Text style={styles.buttonText}>Button!</Text>
</View>
</TouchableElement>
</View>
);
}
});
You can use built in react-native Button element.
import React, { Component } from 'react';
import { StyleSheet, View, Button, Alert, AppRegistry } from 'react-native';
class MainApp extends Component {
_onPress() {
Alert.alert('on Press!');
}
render() {
return (
<View style={styles.container}>
<View style={styles.buttonContainer}>
<Button onPress={this._onPress} title="Hello" color="#FFFFFF" accessibilityLabel="Tap on Me"/>
</View>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#FFFFFF'
},
buttonContainer: {
backgroundColor: '#2E9298',
borderRadius: 10,
padding: 10,
shadowColor: '#000000',
shadowOffset: {
width: 0,
height: 3
},
shadowRadius: 10,
shadowOpacity: 0.25
}
})
AppRegistry.registerComponent('MainApp', () => MainApp);
Read More Here.
The react-native-button package provides a button that is styled like a native button. Install it with npm install react-native-button and use it in your component like this:
var Button = require('react-native-button');
var ExampleComponent = React.createClass({
render() {
return (
<Button
style={{borderWidth: 1, borderColor: 'blue'}}
onPress={this._handlePress}>
Press Me!
</Button>
);
},
_handlePress(event) {
console.log('Pressed!');
},
});
You have two options to achieve a touchable component/button to handle user's events.
One is to use the built in Button Component. Check the docs here http://facebook.github.io/react-native/docs/button.html
Two use either TouchableHighlight or TouchableNativeFeedback or TouchableOpacity or TouchableWithoutFeedback. Think of this as a way for you to convert different areas of your app to tappable(clickable) or a way for you to create a custom button.
Each component here is different based on how it behaves once it's tapped by the user. Check the docs for more details. http://facebook.github.io/react-native/docs/touchablewithoutfeedback.html etc.
Concerning styling in react native you will need to understand flexbox layout. Check this css flexbox article all rules are applicable to react-native https://css-tricks.com/snippets/css/a-guide-to-flexbox/ except that you will have to capitalize the rules e.g align-content to alignContent
<Button
onPress={onPressLearnMore}
title="Learn More"
color="#841584"
accessibilityLabel="Learn more about this purple button"
/>
Please check react-native doc's regarding the buttons
You have more than one way to add button in your application and styling it
You can use Button tag and it's have only one way styling by color attribute, it will appearing in IOS different than Android, or by putting button in view tag with style
<View style={style.buttonViewStyle}>
<Button title="Facebook" color="blue" onPress={this.onFacebookPress} />
</View>
And check the TouchableOpacity and TouchableNativeFeedback tags
And take a lock on below link for more options to add custom buttons in your app
https://js.coach/react-native/react-native-action-button?search=button
export default class Login extends React.Component {
barcodeAction = () => {
this.props.navigation.navigate('BarCodeScanner')
}
cleverTapAction = () => {
this.props.navigation.navigate('CleverTapApp')
}
}
render() {
return (
<View style={styles.container}>
<View style={styles.buttonContainer}>
<Button
onPress={this._onPressButton}
title="Press Me"
/>
</View>
<View style={styles.buttonContainer}>
<Button
onPress={this._onPressButton}
title="Press Me"
color="#841584"
/>
</View>
<View style={styles.alternativeLayoutButtonContainer}>
<Button
onPress={this._onPressButton}
title="This looks great!"
/>
<Button
onPress={this._onPressButton}
title="OK!"
color="#841584"
/>
</View>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
},
buttonContainer: {
margin: 20
},
alternativeLayoutButtonContainer: {
margin: 20,
flexDirection: 'row',
justifyContent: 'space-between'
}
});
The Button element from react-native package does not provide built in styling feature. Ex. The "title" props will be in upper case by default. Hence, I've used an another package react-native-elements that provides nice features for Button element along with different styling options.
You can refer more details on Button from react-native-elements
import React, { Component } from 'react';
import { StyleSheet, View, TouchableOpacity, Text} from 'react-native';
var tapSpeed = React.createClass({
render: function() {
return (
<View style={styles.container}>
<TouchableOpacity>
<Text style={styles.welcome}>
Tap me as fast as you can!
</Text>
</TouchableOpacity>
<TouchableOpacity style={styles.button}>
<Text>!</Text>
</TouchableOpacity>
</View>
);
}
});
var styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
flexDirection: 'column',
alignItems: 'center',
backgroundColor: '#FFCCCC'
},
welcome: {
fontSize: 20,
textAlign: 'center',
margin: 10,
alignSelf: 'center'
},
button: {
justifyContent: 'center',
alignItems: 'center',
marginBottom: 7,
border: 1px solid blue,
borderRadius: 2px
}
});

Categories

Resources