RN 使用第三方组件之react-native-image-picker（拍照／从相册获取图片）

Posted 2020-09-23 谢玉胜的技术文章

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 ：

1. In the XCode\'s "Project navigator", right click on your project\'s Libraries folder ➜ Add Files to <...>
2. 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:

1 2	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:

1 2 3

dependencies {     compile project(\':react-native-image-picker\') }

　　

     3.Add the required permissions in AndroidManifest.xml:

1 2	<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:   

import com.imagepicker.ImagePickerPackage;


.........



 new ImagePickerPackage()

 

 

 

OK,安卓这边也配置完毕.

用法:

   配置弹出框信息

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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

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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

案例: