React native 如何使相机的背景变黑?
问题: 我已经创建了react native camera,但它看起来是这样的 但问题是相机动作图标的背景色是透明的 这是我的密码React native 如何使相机的背景变黑?,react-native,React Native,问题: 我已经创建了react native camera,但它看起来是这样的 但问题是相机动作图标的背景色是透明的 这是我的密码 import React, {useState, useEffect} from 'react'; import { AppRegistry, StyleSheet, TouchableOpacity, View, Image, CameraRoll, Platform, } from 'react-native'; import Io
import React, {useState, useEffect} from 'react';
import {
AppRegistry,
StyleSheet,
TouchableOpacity,
View,
Image,
CameraRoll,
Platform,
} from 'react-native';
import IoniconsIcon from 'react-native-vector-icons/Ionicons';
import EntypoIcon from 'react-native-vector-icons/Entypo';
import AppText from '_components/appText';
import {RNCamera} from 'react-native-camera';
import normalize from '_utils/fontsize';
let countRecordTime;
const PendingView = () => (
<View
style={{
flex: 1,
backgroundColor: 'lightgreen',
justifyContent: 'center',
alignItems: 'center',
}}>
<AppText>Waiting</AppText>
</View>
);
const takePicture = async (camera) => {
const options = {quality: 1};
const data = await camera.takePictureAsync(options);
console.log(data.uri);
};
const recordVideo = async (
camera,
recording,
seconds,
setRecording,
setSeconds,
) => {
if (camera) {
if (!recording) {
startRecording(recording, setRecording, seconds, setSeconds, camera);
} else {
stopRecording(camera, setSeconds);
}
}
};
const startRecording = async (
recording,
setRecording,
seconds,
setSeconds,
camera,
) => {
setRecording(true);
console.log('>>>>>> start recording seconds', seconds);
const cameraConfig = {maxDuration: 20};
const data = await camera.recordAsync(cameraConfig);
console.log('>>>>>> data', data);
setRecording(false);
};
const stopRecording = (camera, setSeconds) => {
camera.stopRecording();
setSeconds(0);
};
const secondsToMMSS = (seconds) => {
console.log('>>>>>> seconds', seconds);
let m = Math.floor(seconds / 60);
let s = Math.floor(seconds % 60);
let mDisplay = m < 10 ? `0${m}` : `${m}`;
let sDisplay = s < 10 ? `0${s}` : `${s}`;
return `${mDisplay}:${sDisplay}`;
};
const VideoRecording = (props) => {
const [type, setType] = useState(RNCamera.Constants.Type.back);
const [flashMode, setFlashMode] = useState(RNCamera.Constants.FlashMode.off);
const [recording, setRecording] = useState(false);
const [seconds, setSeconds] = useState(0);
useEffect(() => {
if (recording) {
countRecordTime = setInterval(() => setSeconds(seconds + 1), 1000);
}
if (!recording && countRecordTime) {
clearInterval(countRecordTime);
}
if (seconds === 20 && countRecordTime) {
clearInterval(countRecordTime);
setRecording(false);
}
return () => {
if (countRecordTime) {
clearInterval(countRecordTime);
}
};
}, [recording, seconds]);
return (
<View style={styles.container}>
<RNCamera
style={styles.preview}
autoFocus={RNCamera.Constants.AutoFocus.on}
type={type}
flashMode={flashMode}
faceDetectionMode={RNCamera.Constants.FaceDetection.Mode.fast}
ratio="4:3"
whiteBalance={RNCamera.Constants.WhiteBalance.auto}
captureAudio={true}
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',
}}>
{({camera, status, recordAudioPermissionStatus}) => {
if (status !== 'READY') {
return <PendingView />;
}
return (
<>
<View
style={{
flex: 0,
flexDirection: 'row',
justifyContent: 'center',
}}>
<TouchableOpacity
style={styles.capture}
onPress={(_) => {
switch (flashMode) {
case RNCamera.Constants.FlashMode.off:
setFlashMode(RNCamera.Constants.FlashMode.auto);
break;
case RNCamera.Constants.FlashMode.auto:
setFlashMode(RNCamera.Constants.FlashMode.on);
break;
case RNCamera.Constants.FlashMode.on:
setFlashMode(RNCamera.Constants.FlashMode.off);
break;
}
}}>
<Image
source={
flashMode === RNCamera.Constants.FlashMode.auto
? require('../../assets/img/flashAuto.png')
: flashMode === RNCamera.Constants.FlashMode.on
? require('../../assets/img/flashOn.png')
: require('../../assets/img/flashOff.png')
}
style={{width: 30, height: 30}}
resizeMode={'contain'}
/>
</TouchableOpacity>
{/* <TouchableOpacity
onPress={() => takePicture(camera)}
style={styles.capture}>
<Image
source={require('../../assets/img/cameraButton.png')}
style={{width: 50, height: 50}}
resizeMode={'contain'}
/>
</TouchableOpacity> */}
<TouchableOpacity
style={styles.iconContainer}
onPress={() =>
recordVideo(
camera,
recording,
seconds,
setRecording,
setSeconds,
)
}>
<EntypoIcon
style={styles.icon}
size={40}
color={recording ? 'red' : 'white'}
name="video-camera"
/>
{recording ? (
<AppText styles={styles.recordingTime}>
{secondsToMMSS(seconds)}
</AppText>
) : null}
</TouchableOpacity>
<TouchableOpacity
style={styles.capture}
onPress={(_) => {
if (type === RNCamera.Constants.Type.back) {
setType(RNCamera.Constants.Type.front);
} else {
setType(RNCamera.Constants.Type.back);
}
}}>
<Image
source={require('../../assets/img/cameraFlipIcon.png')}
style={{width: 40, height: 40}}
resizeMode={'contain'}
/>
</TouchableOpacity>
</View>
<TouchableOpacity style={styles.closeButton} onPress={() => {}}>
<IoniconsIcon
name={'ios-close'}
style={styles.closeButtonIcon}
/>
</TouchableOpacity>
</>
);
}}
</RNCamera>
</View>
);
};
export default VideoRecording;
const styles = StyleSheet.create({
container: {
position: 'absolute',
left: 0,
right: 0,
top: 0,
bottom: 0,
},
preview: {
flex: 1,
justifyContent: 'flex-end',
alignItems: 'center',
backgroundColor: 'black',
},
capture: {
flex: 0,
borderRadius: 5,
padding: 15,
paddingHorizontal: 20,
alignSelf: 'center',
margin: 20,
},
cptureView: {
backgroundColor: '#ffffff',
width: 100,
height: 100,
borderRadius: 100,
alignItems: 'center',
justifyContent: 'center',
marginBottom: '20%',
marginTop: '5%',
},
camIcon: {
color: '#858181',
},
iconContainer: {
justifyContent: 'center',
alignItems: 'center',
},
icon: {
marginHorizontal: 15,
// paddingVertical: 10,
},
recordingTime: {
color: 'red',
},
closeButton: {
position: 'absolute',
backgroundColor: '#aaaaaab0',
width: 50,
height: 50,
borderRadius: 25,
justifyContent: 'center',
top: Platform.OS === 'ios' ? 45 : 10,
left: 10,
},
closeButtonIcon: {
fontSize: Platform.OS === 'ios' ? 40 : 40,
fontWeight: 'bold',
alignSelf: 'center',
lineHeight: Platform.OS === 'ios' ? 58 : 40,
},
});
import React,{useState,useffect}来自“React”;
进口{
评估学,
样式表,
可触摸不透明度,
看法
形象,,
摄影师,
平台,
}从“反应本机”;
从“反应本机向量图标/Ionicons”导入IoniconsIcon;
从“react native vector icons/Entypo”导入EntypoIcon;
从“_components/AppText”导入AppText;
从“react native camera”导入{RNCamera};
从“_utils/fontsize”导入规范化;
让我们记录下时间;
const PendingView=()=>(
等待
);
const takePicture=async(摄像头)=>{
const options={quality:1};
const data=wait camera.takePictureAsync(选项);
log(data.uri);
};
const recordVideo=async(
摄像机,
记录,
秒,
设置录制,
设置秒,
) => {
如果(照相机){
如果(!录制){
开始录制(录制、设置录制、秒、设置秒、摄像头);
}否则{
停止录制(摄像机,设置秒);
}
}
};
常量startRecording=异步(
记录,
设置录制,
秒,
设置秒,
摄像机,
) => {
设置录制(真);
console.log(“>>>>>开始录制秒数”,秒数);
常量cameraConfig={maxDuration:20};
const data=wait camera.recordAsync(cameraConfig);
console.log(“>>>>>数据”,数据);
设置录制(假);
};
const stopRecording=(摄像机,设置秒)=>{
照相机。停止录制();
设置秒(0);
};
const secondsToMMSS=(秒)=>{
console.log(“>>>>>秒”,秒);
设m=数学地板(秒/60);
设s=数学地板(秒数%60);
设mDisplay=m<10?`0${m}`:`${m}`;
设sDisplay=s<10?`0${s}`:`${s}`;
返回`${mDisplay}:${sDisplay}`;
};
常量录像=(道具)=>{
const[type,setType]=useState(RNCamera.Constants.type.back);
const[flashMode,setFlashMode]=useState(RNCamera.Constants.flashMode.off);
const[recording,setRecording]=使用状态(false);
常数[秒,设置秒]=使用状态(0);
useffect(()=>{
如果(录音){
countRecordTime=setInterval(()=>setSeconds(秒+1),1000);
}
if(!录制和计数录制时间){
clearInterval(countRecordTime);
}
如果(秒===20&&countRecordTime){
clearInterval(countRecordTime);
设置录制(假);
}
return()=>{
如果(计数记录时间){
clearInterval(countRecordTime);
}
};
},[录音,秒];
返回(
{({摄像头,状态,recordAudioPermissionStatus})=>{
如果(状态!=“准备就绪”){
返回;
}
返回(
{
开关(闪光模式){
案例RNCamera.Constants.FlashMode.off:
setFlashMode(RNCamera.Constants.FlashMode.auto);
打破
案例RNCamera.Constants.FlashMode.auto:
设置FlashMode(RNCamera.Constants.FlashMode.on);
打破
案例RNCamera.Constants.FlashMode.on:
设置FlashMode(RNCamera.Constants.FlashMode.off);
打破
}
}}>
{/*拍照(照相机)}
style={style.capture}>
*/}
录影带(
摄像机,
记录,
秒,
设置录制,
设置秒,
)
}>
{录音(
{secondsToMMSS(秒)}
):null}
{
if(type==RNCamera.Constants.type.back){
setType(RNCamera.Constants.Type.front);
}否则{
setType(RNCamera.Constants.Type.back);
}
}}>
{}}>
);
}}
);
};
导出默认录像;
const styles=StyleSheet.create({
容器:{
位置:'绝对',
左:0,,
右:0,,
排名:0,
底部:0,
},
预览:{
弹性:1,
justifyContent:“柔性端”,
对齐项目:“居中”,
背景颜色:“黑色”,
},
捕获:{
弹性:0,
边界半径:5,
填充:15,
水平方向:20,
对齐自我:“中心”,
差额:20,
},
cptureView:{
背景颜色:“#ffffff”,
宽度:100,
身高:100,
边界半径:100,
对齐项目:“居中”,
为内容辩护:“中心”,
保证金底部:“20%”,
马金托普:“5%,
},
卡米肯:{
颜色:“#858181”,
},
iconContainer:{
为内容辩护:“中心”,
对齐项目:“居中”,
},
图标:{
marginHorizontal:15,
//填充垂直:10,
},
录制时间:{
颜色:“红色”,
},
关闭按钮:{
位置:'绝对',
背景颜色:“#aaaaaa b0”,
宽度:50,
身高:50,
边界半径:25,
为内容辩护:“中心”,
top:Platform.OS=='ios'?45:10,
左:10,,
},
关闭按钮尼康:{
fontSize:Platform.OS=='ios'?40:40,
fontWeight:'粗体',
对齐自我:“中心”,
线宽:Platform.OS=='ios'?58:40,
},
});
有人能帮我把它弄黑吗?我做了很多努力想找到一个方法来做到这一点。但我不能这样做,如果有人能帮助我,我将不胜感激。非常感谢。您尝过这个吗
。。。
{
开关(闪光模式