不能使用camerax拍摄多张图片

Question

我正在尝试使用 camerax 拍摄多张照片，但只拍摄了第一张照片，代码和日志输出将显示我的意思。

这是代码：

        Log.d(TAG, "------------------ taking new picture1");
        mImageCapture.takePicture(new ImageCapture.OnImageCapturedListener() {
            @Override
            public void onCaptureSuccess(ImageProxy imageProxy, int rotationDegrees) {
                Image image = imageProxy.getImage();
                Log.d(TAG, "taking new picture onCapture Success 1 called");
            }

            @Override
            public void onError(ImageCapture.UseCaseError useCaseError, String message, @Nullable Throwable cause) {
                super.onError(useCaseError, message, cause);
                Log.d(TAG, "--------- error in image capture 1" + message);


            }
        });

        Log.d(TAG, "------------------ taking new picture 2");
        mImageCapture.takePicture(new ImageCapture.OnImageCapturedListener() {
            @Override
            public void onCaptureSuccess(ImageProxy imageProxy, int rotationDegrees) {
                Image image = imageProxy.getImage();
                Log.d(TAG, "taking new picture onCapture Success 2 called");


            }

            @Override
            public void onError(ImageCapture.UseCaseError useCaseError, String message, @Nullable Throwable cause) {
                super.onError(useCaseError, message, cause);
                Log.d(TAG, "--------- error in image capture 2" + message);
            }
        });

相关的日志输出是：

2019-09-04 12:23:00.978 28970-29006/com.example.david.digified_android D/ScanDocumentFragment: ------------------ taking new picture1
2019-09-04 12:23:00.980 28970-29006/com.example.david.digified_android D/ScanDocumentFragment: ------------------ taking new picture 2
2019-09-04 12:23:02.063 28970-28970/com.example.david.digified_android D/ScanDocumentFragment: taking new picture onCapture Success 1 called

但拍摄新照片 onCapture Success 2从未发生过

虽然根据文档拍摄两张照片并没有错：

TakePicture 立即返回并调用侦听器以在捕获完成后提供结果。多次调用 takePicture 将在捕获上一张图片后开始依次拍摄图片。

https://developer.android.com/reference/androidx/camera/core/ImageCapture?hl=en

Answer 1

这似乎是图书馆的问题，这是错误：https : //issuetracker.google.com/issues/140518887

更新 根据团队对该问题的评论，这似乎不是错误，问题是我image.close();在完成处理后必须调用，以便我的代码应该是：

Log.d(TAG, "------------------ taking new picture1");
mImageCapture.takePicture(new ImageCapture.OnImageCapturedListener() {
   @Override
   public void onCaptureSuccess(ImageProxy imageProxy, int rotationDegrees) {
      Image image = imageProxy.getImage();
      Log.d(TAG, "taking new picture onCapture Success 1 called");
      image.close();
   }

});

Log.d(TAG, "------------------ taking new picture 2");
mImageCapture.takePicture(new ImageCapture.OnImageCapturedListener() {
   @Override
   public void onCaptureSuccess(ImageProxy imageProxy, int rotationDegrees) {
      Image image = imageProxy.getImage();
      Log.d(TAG, "taking new picture onCapture Success 2 called");
      image.close();
   }
});