react-native多图上传 react-native-image-picker图片上传之多个上传图片

忘是亡心i 2022-05-16 15:57 153阅读 0赞

### 话不多说 直接贴代码, 如有疑问 下方留言或者发邮箱 ###

引入需要的组件
    import ImagePicker2 from 'react-native-image-picker';
    import RNHeicConverter from 'react-native-heic-converter';
    // RNHeicConverter图片转换 IOS11之后 有HEIC图片需要转换 不然显示不出来

clas Page extends Component {
      constructor(props) {
        super(props);
        this.state = {
          files: [],
          title: "",
          content: "",
          src: [],
          selectMap: new Map(),
        };
        this.srcArr = []
      }
    
    
    <View style={
       {marginHorizontal: 10, marginVertical: 10, flexDirection: 'row', flexWrap: 'wrap'}}>
                {
                  temp ? temp.map((v, i) => {
                    return (
                      <View
                        style={
       {
                          flexDirection: 'row',
                          marginRight: 10,
                          marginBottom: 10,
                          position: 'relative'
                        }}
                        key={i}
                      >
                        <Image
                          roundAsCircle={true}
                          style={
       {
                            height: 70,
                            width: 70,
                            borderRadius: 10
                          }} source={
       {uri: v}}
                        />
                        <TouchableOpacity
                          style={
       {
                            position: 'absolute',
                            top: 0,
                            right: 0
                          }}
                          onPress={()=>{
                            let newMap = this.state.selectMap
                            let temp = [...this.state.selectMap.values()];
                            let temp2 = [...this.state.selectMap.keys()];
                            newMap.delete(temp2[i], temp[i])
                            this.setState({
                              selectMap:newMap
                            })
                          }}
                        >
                          <Image
                            style={
       {
                              height: 18,
                              width: 18
                            }}
                            source={require('../images/删除图片.png')}
                          />
                        </TouchableOpacity>
                      </View>
    
                    )
                  }) : null
                }
                {
                  temp.length === 4 ?
                    <Tip tipMsg="*注:最多上传四张图片哦"/>
                    :
                    <TouchableOpacity onPress={this.selectPhotoTapped.bind(this)}>
                      <View style={[{marginBottom: 20}]}>
                        <Image
                          style={
       {width: 70, height: 70}}
                          source={require('../images/增加按钮.png')}
                        />
                      </View>
                    </TouchableOpacity>
                }
              </View>

selectPhotoTapped() {
        const options = {
          title: '选择图片',
          cancelButtonTitle: '取消',
          takePhotoButtonTitle: '拍照',
          chooseFromLibraryButtonTitle: '选择照片',
          cameraType: 'back',
          mediaType: 'photo',
          videoQuality: 'medium',  // 图片质量
          durationLimit: 10,  // 
          maxWidth: 500, // 图片大小
          maxHeight: 500, // 图片大小
          quality: 0.8,
          angle: 0,
          allowsEditing: false,
          noData: false,
          storageOptions: {
            skipBackup: true
          }
        };
    
        ImagePicker2.showImagePicker(options, (response) => {
          // console.log('Response = ', response);
          if (response.didCancel) {
            console.log('User cancelled photo picker');
          }
          else if (response.error) {
            console.log('ImagePicker Error: ', response.error);
          }
          else if (response.customButton) {
            console.log('User tapped custom button: ', response.customButton);
          }
          else {
            Toast.loading('上传中...')
            console.log(response)
            let source = {}
            if (Platform.OS === 'ios' && (response.fileName.endsWith('.heic') || response.fileName.endsWith('.HEIC'))) {
              RNHeicConverter.convert({ path: response.origURL }).then((data) => {
                const { success, path, error } = data
    
                if(!error && success && path) {
    
                  let name = response.fileName
    
                  name = name.replace(".heic", ".jpg")
    
                  name = name.replace(".HEIC", ".jpg")
    
                  source = {uri: path, name}
                  console.log(source)
                } else {
                  Toast.show('图片上传失败!')
                }
              })
            } else {
              source = {uri: response.uri, type: response.type, name: response.fileName}
              console.log(source)
            }
    
            upload("/api/UploadImage/uploadDisplayImage", response)
              .then(param => {
                const responseData = JSON.parse(param.data)
                console.log(response)
                console.log(param)
                let newMap = this.state.selectMap
                this.srcArr.push(responseData.data)
                newMap.set(response.fileName, response.uri)
                Toast.info("上传成功",0.5)
                this.setState({
                  selectMap: newMap,
                  src: this.srcArr
                });
              })
              .catch(err => {
                console.log(err)
                Toast.info("上传失败",0.5);
                this.setState({
                  files: []
                });
              })
          }
        })
      }
      }

submitFeedback = () => { // 提交到服务端
        const {navigation: {state}, loginSession} = this.props;
        const {token, uuid} = loginSession
        const {title, content, files, concat, src} = this.state;
        console.log(this.state)
        if (title.length === 0 || content.length === 0) {
          Toast.info("请填写标题和内容");
          return;
        }
        if (src.length === 0) {
          Toast.info("请上传图片")
          return;
        }
        this.props.dispatch({  // 
          type: 'photoFeedBackPage/MemberDisplayAdd',
          payload: {
            token,
            uuid,
            title,
            content,
            display_img: src.join(';')
          }
        })
      }