Reactjs 如何在react native中设置间隔?
我想将Interval设置为以下视图30秒,我该怎么做Reactjs 如何在react native中设置间隔?,reactjs,react-native,react-native-android,Reactjs,React Native,React Native Android,我想将Interval设置为以下视图30秒,我该怎么做 import React, {PureComponent} from 'react'; import {StyleSheet, Text, TouchableOpacity, View, Animated,ProgressBarAndroid} from 'react-native'; import {RNCamera} from 'react-native-camera'; import Icon from 'react-nati
import React, {PureComponent} from 'react';
import {StyleSheet, Text, TouchableOpacity, View, Animated,ProgressBarAndroid} from 'react-native';
import {RNCamera} from 'react-native-camera';
import Icon from 'react-native-vector-icons/Entypo';
import ImagePicker from 'react-native-image-crop-picker';
import Video from 'react-native-video';
let animation = new Animated.Value(0);
export default class Shoot extends PureComponent {
constructor(props) {
super(props);
this.state = {
recording: false,
processing: true,
upload: false,
galleryVideo: '',
progress: '',
video: '',
};
}
render() {
return (
<View style={styles.container}>
{this.state.upload == true && (
<TouchableOpacity
style={{
backgroundColor: '#e75480',
position: 'absolute',
width: 80,
height: 30,
zIndex: 2,
padding: 5,
borderRadius: 5,
right: 0,
justifyContent: 'center',
alignContent: 'center',
}}
onPress={() => this.props.navigation.navigate('Post', {key: 1})}>
<Text style={{color: 'white', textAlign: 'center'}}>Next</Text>
</TouchableOpacity>
)}
{this.state.upload == false && (
<TouchableOpacity
style={{
position: 'absolute',
bottom: 0,
right: '15%',
justifyContent: 'center',
alignItems: 'center',
}}
onPress={this.video.bind(this)}>
<Icon name="image" size={30} color="white" />
<Text style={{color: 'white', fontWeight: 'bold'}}>Upload</Text>
</TouchableOpacity>
)}
<TouchableOpacity
onPress={this.take60sVideo.bind(this)}
style={{
width: 60,
height: 60,
justifyContent: 'center',
alignContent: 'center',
position: 'absolute',
bottom: 0,
left: '25%',
}}>
<Text style={{textAlign: 'center', color: 'red', fontSize: 15}}>
60s
</Text>
</TouchableOpacity>
<TouchableOpacity
onPress={this.take15sVideo.bind(this)}
style={{
width: 60,
height: 60,
justifyContent: 'center',
alignContent: 'center',
position: 'absolute',
bottom: 0,
left: '5%',
}}>
<Text style={{textAlign: 'center', color: 'red', fontSize: 15}}>
15s
</Text>
</TouchableOpacity>
<TouchableOpacity
onPress={this.take30sVideo.bind(this)}
style={styles.capture}></TouchableOpacity>
{this.state.progress === true && (
<View
style={{
borderColor: '#0000FF',
borderWidth: 1,
width: '100%',
height: 15,
top: 0,
position: 'absolute',
bottom: 0,
zIndex: 2,
}}>
<Animated.View
style={
([StyleSheet.absoluteFill],
{backgroundColor: '#8BED4F', width: '50%', height: 10})
}
/>
{/* <ProgressBarAndroid styleAttr="Horizontal"/> */}
</View>
)}
{this.state.video == '' ? (
<RNCamera
ref={(ref) => {
this.camera = ref;
}}
style={styles.preview}
type={RNCamera.Constants.Type.back}
flashMode={RNCamera.Constants.FlashMode.on}
androidCameraPermissionOptions={{
title: 'Permission to use camera',
message: 'We need your permission to use your camera',
buttonPositive: 'Ok',
buttonNegative: 'Cancel',
}}
androidRecordAudioPermissionOptions={{
title: 'Permission to use audio recording',
message: 'We need your permission to use your audio',
buttonPositive: 'Ok',
buttonNegative: 'Cancel',
}}
captureAudio={true}
/>
) : (
<Video
source={{uri: this.state.video}}
style={{
position: 'absolute',
top: 0,
left: 0,
alignItems: 'stretch',
bottom: 0,
right: 0,
height: '90%',
}}
resizeMode="cover"
repeat={true}
/>
)}
</View>
);
}
video = () => {
ImagePicker.openPicker({
mediaType: 'video',
}).then((video) => {
this.setState({
galleryVideo: 1,
video: video.path,
upload: true,
});
});
};
take30sVideo = async () => {
if (this.camera) {
try {
const options = {
quality: 2,
videoBitrate: 8000000,
maxDuration: 30,
};
const promise = this.camera.recordAsync(options);
this.setState({progress: true});
if (promise) {
this.setState({recording: true});
const data = await promise;
this.setState({recording: false, upload: true});
console.log(data);
console.log('upload', this.state.upload);
}
} catch (error) {
console.log(error);
}
}
};
take60sVideo = async () => {
if (this.camera) {
try {
const options = {
quality: 2,
videoBitrate: 8000000,
maxDuration: 60,
};
const promise = this.camera.recordAsync(options);
if (promise) {
this.setState({recording: true, upload: true});
const data = await promise;
this.setState({recording: false});
console.log(data);
}
} catch (error) {
console.log(error);
}
}
};
take15sVideo = async () => {
if (this.camera) {
try {
const options = {
quality: 2,
videoBitrate: 8000000,
maxDuration: 15,
};
const promise = this.camera.recordAsync(options);
if (promise) {
this.setState({recording: true});
const data = await promise;
this.setState({recording: false, upload: true});
console.log(data);
}
} catch (error) {
console.log(error);
}
}
};
}
const styles = StyleSheet.create({
container: {
flex: 1,
flexDirection: 'column',
backgroundColor: 'black',
},
preview: {
height: '90%',
justifyContent: 'flex-end',
alignItems: 'center',
},
capture: {
backgroundColor: '#e75480',
borderRadius: 40,
borderWidth: 3,
borderColor: 'red',
width: 60,
height: 60,
position: 'absolute',
bottom: 0,
justifyContent: 'center',
left: '45%',
alignContent: 'center',
},
});
import React,{PureComponent}来自'React';
从“react native”导入{样式表、文本、TouchableOpacity、视图、动画、ProgressBarAndroid};
从“react native camera”导入{RNCamera};
从“react native vector icons/Entypo”导入图标;
从“react native image crop picker”导入ImagePicker;
从“react native Video”导入视频;
让动画=新动画。值(0);
导出默认类组件{
建造师(道具){
超级(道具);
此.state={
录音:错,
处理:对,
上传:false,
galleryVideo:“”,
进展:'',
视频:'',
};
}
render(){
返回(
{this.state.upload==true&&(
this.props.navigation.navigate('Post',{key:1})}>
下一个
)}
{this.state.upload==false&&(
上传
)}
60年代
15秒
{this.state.progress===true&&(
{/* */}
)}
{this.state.video==''(
{
this.camera=ref;
}}
style={style.preview}
类型={RNCamera.Constants.type.back}
flashMode={RNCamera.Constants.flashMode.on}
androidCameraPermissionOptions={{
标题:“使用相机的权限”,
信息:“我们需要您的许可才能使用您的相机”,
buttonPositive:“Ok”,
按钮否定:“取消”,
}}
androidRecordAudioPermissionOptions={{
标题:“使用录音的许可”,
消息:“我们需要您的许可才能使用您的音频”,
buttonPositive:“Ok”,
按钮否定:“取消”,
}}
captureAudio={true}
/>
) : (
)}
);
}
视频=()=>{
ImagePicker.openPicker({
mediaType:“视频”,
})。然后((视频)=>{
这是我的国家({
画廊视频:1,
视频:video.path,
上传:对,
});
});
};
take30sVideo=async()=>{
如果(这个相机){
试一试{
常量选项={
质量:2,,
视频比特率:8000000,
最大持续时间:30,
};
const promise=this.camera.recordAsync(选项);
this.setState({progress:true});
如果(承诺){
this.setState({recording:true});
常数数据=等待承诺;
this.setState({recording:false,upload:true});
控制台日志(数据);
console.log('upload',this.state.upload);
}
}捕获(错误){
console.log(错误);
}
}
};
take60sVideo=async()=>{
如果(这个相机){
试一试{
常量选项={
质量:2,,
视频比特率:8000000,
最大持续时间:60,
};
const promise=this.camera.recordAsync(选项);
如果(承诺){
this.setState({recording:true,upload:true});
常数数据=等待承诺;
this.setState({recording:false});
控制台日志(数据);
}
}捕获(错误){
console.log(错误);
}
}
};
take15sVideo=async()=>{
如果(这个相机){
试一试{
常量选项={
质量:2,,
视频比特率:8000000,
最大持续时间:15,
};
const promise=this.camera.recordAsync(选项);
如果(承诺){
this.setState({recording:true});
常数数据=等待承诺;
this.setState({recording:false,upload:true});
控制台日志(数据);
}
}捕获(错误){
console.log(错误);
}
}
};
}
const styles=StyleSheet.create({
容器:{
弹性:1,
flexDirection:'列',
背景颜色:“黑色”,
},
预览:{
身高:90%,
justifyContent:“柔性端”,
对齐项目:“居中”,
},
捕获:{
背景颜色:“#e75480”,
边界半径:40,
边框宽度:3,
边框颜色:“红色”,
宽度:60,
身高:60,
位置:'绝对',
底部:0,
为内容辩护:“中心”,
左:45%,
对齐内容:“中心”,
},
});
比如说,我希望在录制开始后查看进度为true,take30svideo()被触发,一旦为true,组件应设置动画以显示进度,然后在计时器完成后立即停止,以上是完整的代码,我希望这对您有所帮助
任何建议都很好我假设您希望在安装应用程序时显示此布局30秒。您可以这样做:
export default class App extends React.Component {
constructor(props) {
super(props);
this.state = {
progress: true,
};
}
timer;
componentDidMount() {
this.timer = setInterval(() => {
this.setProgress();
}, 30000);
}
setProgress = () => {
this.setState({
progress: false ,
});
};
componentWillUnmount(){
if(this.timer) clearInterval(this.timer);
}
render() {
if(this.state.progress){
<View
style={{
borderColor: '#0000FF',
borderWidth: 1,
width: '100%',
height: 15,
top: 0,
position: 'absolute',
bottom: 0,
zIndex: 2,
}}>
<Animated.View
style={
([StyleSheet.absoluteFill],
{backgroundColor: '#8BED4F', width: '50%', height: 10})
}
/>
</View>
}
else{
... rest of your code
}
}
}
导出默认类App扩展React.Component{
建造师(道具){
超级(道具);
此.state={
进步:没错,
};
}
定时器;
componentDidMount(){
this.timer=setInterval(()=>{
这是setProgress();
}, 30000);
}
setProgress=()=>{
这是我的国家({
进展:错,
});
};
组件将卸载(){
if(this.timer)clearInterval(this.timer);
}
render(){
如果(本状态进度){
}
否则{
…代码的其余部分
}
}
}
您需要将时间保存为实例变量,并在卸载组件时将其清除,否则即使在卸载组件后,它仍将继续运行,如下所示
componentDidMount() {
this._interval = setInterval(() => {
// Your code
}, 1000);
}
componentWillUnmount() {
clearInterval(this._interval);
}
你说的一个片段是什么意思?你想在一段时间后渲染那个元素,你想在一段时间后隐藏它,我们不知道。请更好地解释你想要的行为我想让视图闪烁一定的时间间隔,比如30000mW闪烁是什么意思?嗨@GBALDUZI我更新了问题,请看一下嗨@jpmarks我更新了que