React-Native 组件react-native-image-picker教程

首先给个github地址：https://github.com/react-community/react-native-image-picker  英文不行的看下面这个笔记

该插件可以同时给iOS和Android两个平台下使用,但是需要配置下各自平台下的文件

1.   首先,安装下该插件:

    npm install react-native-image-picker@latest --save

2.   先别link,先添加进来该库之后 再link.  

下面对于各自平台进行配置即可.

  iOS:

     手动添加库 ：

In the XCode's "Project navigator", right click on your project's Libraries folder ➜ Add Files to <...>

Go to node_modules ➜ react-native-image-picker ➜ ios ➜ select RNImagePicker.xcodeproj

=>  打开Xcode打开项目,点击根目录,右键选择　Add Files to 'XXX',选中项目中的该路径下的文件即可:node_modules ➜ react-native-image-picker ➜ ios ➜ select RNImagePicker.xcodeproj

OK,添加进来之后,再进行 link命令.  react-native link react-native-image-picker 

3.Add RNImagePicker.a to Build Phases -> Link Binary With Libraries

（注意这里的只要出现RNImagePicker.就可以了，跟前面的图标没关系）

  4.For iOS 10+, Add the NSPhotoLibraryUsageDescription and NSCameraUsageDescription keys to your Info.plist with strings describing why your app needs these permissions

=>对于适配iOS10,需要在info.plist中配置NSPhotoLibraryUsageDescription和NSCameraUsageDescription

（点击加号 选择privacy camera usage Description 和 privacy. PhotoLibraryUsageDescription ）

iOS平台配置完毕.

Android:

    1.Add the following lines to `android/settings.gradle`:


include ':react-native-image-picker'

project(':react-native-image-picker').projectDir = new File(settingsDir, '../node_modules/react-native-image-picker/android')

2.Add the compile line to the dependencies in android/app/build.gradle:

dependencies {

   compile project(':react-native-image-picker')

}

3.Add the required permissions in AndroidManifest.xml:

<uses-permission android:name="android.permission.CAMERA" />

<uses-permission android:name="android.permission.WRITE\_EXTERNAL\_STORAGE"/>

  4.Add the import and link the package in MainApplication.java:   

new ImagePickerPackage()

OK,安卓这边也配置完毕.

用法:

  配置弹出框信息

import  ImagePicker from 'react-native-image-picker'; //第三方相机

var photoOptions = {

   //底部弹出框选项

   title:'请选择',

   cancelButtonTitle:'取消',

   takePhotoButtonTitle:'拍照',

   chooseFromLibraryButtonTitle:'选择相册',

   quality:0.75,

   allowsEditing:true,

   noData:false,

   storageOptions: {

       skipBackup: true,

       path:'images'

   }

}

点击事件

cameraAction = () =>{

ImagePicker.showImagePicker(options, (response) => {

 console.log('Response = ', response);

  

 if (response.didCancel) {

   console.log('User cancelled image picker');

 }

 else if (response.error) {

   console.log('ImagePicker Error: ', response.error);

 }

 else if (response.customButton) {

   console.log('User tapped custom button: ', response.customButton);

 }

 else {

   let source = { uri: response.uri };

  

   // You can also display the image using data:

   // let source = { uri: 'data:image/jpeg;base64,' + response.data };

  

   this.setState({

     avatarSource: source

   });

 }

});

   }

<Image source={this.state.avatarSource} style={styles.uploadAvatar} />

这里注意的是 ios的模拟器不能拍照哦