weex-image-crop-picker

由于weex market里的weex-image-picker插件并无裁剪和多选功能，看到也是从react-native-image-picker移植来的，并且该插件原作者推荐了功能比较多的 react-native-image-crop-picker ，于是产生了此项目。

Result

Android

• root目录的build.gradle增加jitpack的地址

  allprojects {
    repositories {
      ...
      maven { url 'https://jitpack.io' }
    }
  }

• 在你的app目录的build.gradle增加一行依赖

  dependencies {
    compile com.github.voids:weex-image-crop-picker:1.0.2
  }
  // 如果提示duplicate entry，则exclude不需要的module，如下
  dependencies {
      compile('com.github.voids:weex-image-crop-picker:1.0.2') {
          exclude module: 'weex_sdk'
      }
  }

• Application子类中注册module

  import cn.dv4.weeximagecroppicker.ImageCropPickerModule;
  // 在WXSDKEngine.initialize之后注册module
  WXSDKEngine.registerModule("imageCropPicker", ImageCropPickerModule.class);

• 在你的WXSDKInstance所在的Activity中重载onActivityResult，否则接收不到返回结果

  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data) {
      super.onActivityResult(requestCode, resultCode, data);
          if (mWXSDKInstance != null) {
          mWXSDKInstance.onActivityResult(requestCode, resultCode, data);
      }
  }

• 如果需要使用camera，则需要手动在AndroidManifest.xml中添加一行权限

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

iOS

• 在Podfile增加一行依赖

  pod 'WeexImageCropPicker'
  

• 更新依赖

  pod install

• appdelegate中注册module

  #import <WeexImageCropPicker/ImageCropPicker.h>
  // 在[WXSDKEngine initSDKEnvironment] 之后注册module
  [WXSDKEngine registerModule:@"imageCropPicker" withClass:[ImageCropPicker class]];

• 请在info.plist中自行添加权限

javascript

由于weex的扩展为callback，不支持promise，所以用法有些调整。

// example
var ImageCropPicker = weex.requireModule('imageCropPicker')
var options = {
    width: 300,
    height: 300,
    includeExif: true,
    mediaType: 'photo',
    cropping: true
}

export default {
    data: {
        result:""
    },
    methods: {
        gallery(e) {
            ImageCropPicker.openPicker(options, (response) => {
                // 成功返回 {code:'E_SUCCESS', data:{...}}
                this.result = JSON.stringify(response)
            })
        },
        camera(e) {
            ImageCropPicker.openCamera(options, (response) => {
                // 失败返回 {code:'E_PERMISSION_MISSING', message:'...'}
                this.result = JSON.stringify(response)
            })
        }
    }
}

options

Property	Type	Description
cropping	bool (default false)	是否开启图片剪裁
width	number	剪裁后图片的宽度，cropping为true时有效
height	number	剪裁后图片的高度，cropping 为true时有效
multiple	bool (default false)	是否开启多选，开启多选后裁剪功能无效
writeTempFile (ios only)	bool (default true)	When set to false, does not write temporary files for the selected images. This is useful to improve performance when you are retrieving file contents with the includeBase64 option and don't need to read files from disk.
includeBase64	bool (default false)	是否输出base64
includeExif	bool (default false)	是否输出图片exif信息，如gps、光圈、快门速度等
cropperActiveWidgetColor (android only)	string (default "#424242")	When cropping image, determines ActiveWidget color.
cropperStatusBarColor (android only)	string (default #424242)	When cropping image, determines the color of StatusBar.
cropperToolbarColor (android only)	string (default #424242)	When cropping image, determines the color of Toolbar.
freeStyleCropEnabled (android only)	bool (default false)	Enables user to apply custom rectangle area for cropping
cropperToolbarTitle	string (default Edit Photo)	When cropping image, determines the title of Toolbar.
cropperCircleOverlay	bool (default false)	是否裁剪时开启遮罩
disableCropperColorSetters (android only)	bool (default false)	When cropping image, disables the color setters for cropping library.
minFiles (ios only)	number (default 1)	Min number of files to select when using multiple option
maxFiles (ios only)	number (default 5)	Max number of files to select when using multiple option
waitAnimationEnd (ios only)	bool (default true)	Promise will resolve/reject once ViewController completion block is called
smartAlbums (ios only)	array (supported values: ['PhotoStream', 'Generic', 'Panoramas', 'Videos', 'Favorites', 'Timelapses', 'AllHidden', 'RecentlyAdded', 'Bursts', 'SlomoVideos', 'UserLibrary', 'SelfPortraits', 'Screenshots', 'DepthEffect', 'LivePhotos', 'Animated', 'LongExposure']) (default ['UserLibrary', 'PhotoStream', 'Panoramas', 'Videos', 'Bursts'])	List of smart albums to choose from
useFrontCamera (ios only)	bool (default false)	Whether to default to the front/'selfie' camera when opened
compressVideoPreset (ios only)	string (default MediumQuality)	Choose which preset will be used for video compression
compressImageMaxWidth	number (default none)	图片压缩指定最大宽度
compressImageMaxHeight	number (default none)	图片压缩指定最大高度
compressImageQuality	number (default 1)	图片压缩质量 (取值范围 0 — 1，1为最好质量)
loadingLabelText (ios only)	string (default "Processing assets...")	Text displayed while photo is loading in picker
mediaType	string (default any)	媒体选择类型: 'photo'=照片, 'video'=视频, 'any'=全部
showsSelectedCount (ios only)	bool (default true)	Whether to show the number of selected assets
showCropGuidelines (android only)	bool (default true)	Whether to show the 3x3 grid on top of the image during cropping
hideBottomControls (android only)	bool (default false)	Whether to display bottom controls
enableRotationGesture (android only)	bool (default false)	Whether to enable rotating the image by hand gesture
cropperChooseText (ios only)	string (default choose)	Choose button text
cropperCancelText (ios only)	string (default Cancel)	Cancel button text

参数均与react-native-image-crop-picker 文档中所列的参数保持一致

注：跟原插件的android部份一样，并未实现视频压缩，因为ffmpeg太慢并且需要licence