Question

我在react native中有一个小的native模块，可以在指定时间从视频文件获取缩略图。问题是，当我从本机反应多次调用此方法时，我得到了java.lang.OutOfMemoryError。

这是java方法：

  @ReactMethod
  public void get(String filePath, Integer atTimeValue, Promise promise) {
    filePath = filePath.replace("file://","");
    MediaMetadataRetriever retriever = new MediaMetadataRetriever();
    retriever.setDataSource(filePath);
    Bitmap image = retriever.getFrameAtTime(atTimeValue, MediaMetadataRetriever.OPTION_CLOSEST_SYNC);

    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    image.compress(Bitmap.CompressFormat.JPEG, 80, byteArrayOutputStream);
    byte[] byteArray = byteArrayOutputStream.toByteArray();

    String encoded = Base64.encodeToString(byteArray, Base64.DEFAULT);

    try {
      // MediaStore.Images.Media.insertImage(reactContext.getContentResolver(), file.getAbsolutePath(), file.getName(), file.getName());

      WritableMap map = Arguments.createMap();

      map.putString("path", encoded);
      map.putDouble("width", image.getWidth());
      map.putDouble("height", image.getHeight());

      promise.resolve(map);

    } catch (Exception e) {
      Log.e("E_RNThumnail_ERROR", e.getMessage());
      promise.reject("E_RNThumnail_ERROR", e);
    }
  }

这是完整的堆栈跟踪：

java.lang.RuntimeException Could not invoke RNThumbnail.get 
    JavaMethodWrapper.java:383 com.facebook.react.bridge.JavaMethodWrapper.invoke
    JavaModuleWrapper.java:158 com.facebook.react.bridge.JavaModuleWrapper.invoke
    NativeRunnable.java:-2 com.facebook.react.bridge.queue.NativeRunnable.run
    Handler.java:873 android.os.Handler.handleCallback
    Handler.java:99 android.os.Handler.dispatchMessage
    MessageQueueThreadHandler.java:29 com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage
    Looper.java:193 android.os.Looper.loop
    MessageQueueThreadImpl.java:192 com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run
    Thread.java:764 java.lang.Thread.run


Caused by: java.lang.reflect.InvocationTargetException
    Method.java:-2 java.lang.reflect.Method.invoke
    JavaMethodWrapper.java:372 com.facebook.react.bridge.JavaMethodWrapper.invoke
    JavaModuleWrapper.java:158 com.facebook.react.bridge.JavaModuleWrapper.invoke
    NativeRunnable.java:-2 com.facebook.react.bridge.queue.NativeRunnable.run
    Handler.java:873 android.os.Handler.handleCallback
    Handler.java:99 android.os.Handler.dispatchMessage
    MessageQueueThreadHandler.java:29 com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage
    Looper.java:193 android.os.Looper.loop
    MessageQueueThreadImpl.java:192 com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run
    Thread.java:764 java.lang.Thread.run


Caused by: java.lang.OutOfMemoryError Failed to allocate a 88552 byte allocation with 12584 free bytes and 12KB until OOM, max allowed footprint 268435456, growth limit 268435456 
    StringFactory.java:234 java.lang.StringFactory.newStringFromBytes
    StringFactory.java:65 java.lang.StringFactory.newStringFromBytes
    Base64.java:456 android.util.Base64.encodeToString
    RNThumbnailModule.java:70 me.hauvo.thumbnail.RNThumbnailModule.get
    Method.java:-2 java.lang.reflect.Method.invoke
    JavaMethodWrapper.java:372 com.facebook.react.bridge.JavaMethodWrapper.invoke
    JavaModuleWrapper.java:158 com.facebook.react.bridge.JavaModuleWrapper.invoke
    NativeRunnable.java:-2 com.facebook.react.bridge.queue.NativeRunnable.run
    Handler.java:873 android.os.Handler.handleCallback
    Handler.java:99 android.os.Handler.dispatchMessage
    MessageQueueThreadHandler.java:29 com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage
    Looper.java:193 android.os.Looper.loop
    MessageQueueThreadImpl.java:192 com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run
    Thread.java:764 java.lang.Thread.run

有什么办法解决此内存问题吗？

从本机模块中获取OutOfMemoryError

0 个答案: