相关疑难解决方法(0)

我创建了一个CustomView SignatureView.java,它扩展了LinearLayout以捕获Android Native中的签名.

并创建了SignatureCapturePackage.java和SignatureCaptureViewManager.java

public class SignatureCaptureMainView extends LinearLayout {

     .... 

    public void saveImage(){
               //Save image to file 
     }
}

这个Package类

public class SignatureCapturePackage implements ReactPackage {
      private Activity mCurrentActivity;

      public RSSignatureCapturePackage(Activity activity) {
        mCurrentActivity = activity;
      }

      @Override
      public List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {
        return Arrays.<NativeModule>asList();
      }

      @Override
      public List<ViewManager> createViewManagers(ReactApplicationContext reactApplicationContext) {
        return Arrays.<ViewManager>asList(new SignatureCaptureViewManager(mCurrentActivity));
      }

      @Override
      public List<Class<? extends JavaScriptModule>> createJSModules() {
        return Arrays.asList();
      }
    }

这是ViewManager类

 public class SignatureCaptureViewManager extends      ViewGroupManager<SignatureCaptureMainView> {
    private Activity mCurrentActivity;

    public static …

我正在尝试导出ViewReact Native中的渲染图形.例如,我的观点是:

<View> <Image/> // Some image <Rectangle /> // Some little <Circle /> // Some circle </View>

如何从容器中提取渲染的图形View为任何图像数据格式？