如何在 react-native 中访问相机我无法将图片保存在手机存储中

Question

这是我的 AndroidMainfest.xml

enter code here
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>


and here is my code
 import React, { Component, useRef, PermissionsAndroid } from 'react';
 import { View, StatusBar, TouchableOpacity, Image } from 'react-native';
 import {RNCamera as Camera} from 'react-native-camera';
 import styles from '../src/components/styles'; 
 import PhotoCaptureIcon from '../assets/camera.png'; 
 import CameraRoll from "@react-native-community/cameraroll";


 const checkAndroidPermission = async () => {
    try {
      const permission = PermissionsAndroid.PERMISSIONS.WRITE_EXTERNAL_STORAGE;
      await PermissionsAndroid.request(permission);
      Promise.resolve();
     }catch (error) {
      Promise.reject(error);
    }
};
 export default class Application extends Component { 
     constructor(props) { 
         super(); 
         this.camera = null; 
     } 
 


 takePicture =async () => { 
    if (Platform.OS === 'android'){
        await checkAndroidPermission();
    }
    if (this.camera) {
        const options = { quality: 0.5, base64: true };
        const data = await this.camera.takePictureAsync(options);
        console.log(data.uri);
        if (data) {
            const result = await CameraRoll.save(data.uri);
            console.log('????result', result);
          }
      }
     
        
    
}


 render() { 
     return (
     <View style={styles.container}>         
      <StatusBar animated hidden /> 
     <Camera 
        ref={ref => {
            this.camera = ref;
          }}
          style={styles.preview}
          type={Camera.Constants.Type.back}
          flashMode={Camera.Constants.FlashMode.off}
          captureAudio={false}
          
         /> 
         <View style={[styles.overlay, styles.bottomOverlay]}> 
             <TouchableOpacity style={styles.captureButton} onPress={this.takePicture}> 
                 <Image source={PhotoCaptureIcon} /> 
             </TouchableOpacity> 
         </View> 
     </View>
     ); 
 }
 

}

和错误 可能的未处理承诺拒绝（id：5）： 错误：权限被拒绝 promiseMethodWrapper@http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:2242:45 _callee$@http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:130062:75 tryCatch@http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:24919:23 调用@http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:25092:32 tryCatch@http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:24919:23 调用@http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:24992:30 http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:25002:21 tryCallOne@http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:26991:16 http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:27092:27 _callTimer@http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:30531:17 _callImmediatesPass@http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:30570:17 callImmediates@http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:30787:33 __callImmediates@http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:2736:35 http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:2522:34 __guard@http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:2719:15 flushedQueue@http://localhost:8081/index.bundle?platform=android&dev=true&minify=false:2521:21 flushedQueue@[本机代码] invokeCallbackAndReturnFlushedQueue@[本机代码]

Answer 1

您可以使用 npm 中的 react-native-image-picker 模块。并按照说明进行操作 -

Here on npm你可以找到模块。