相机意图不添加额外

我正在使用一个隐含的Intent来拍照.我一直在关注本教程中概述的工作.我遇到的问题是没有交付添加到Intent的额外内容.这是我正在使用的代码:

private void dispatchTakePictureIntent(Context context) {
        Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        // Ensure that there's a camera activity to handle the intent
        if (takePictureIntent.resolveActivity(context.getPackageManager()) != null) {
            // Create the File where the photo should go
            File photoFile = null;
            try {
                photoFile = createImageFile(this.getActivity());
            } catch (IOException ex) {
                Log.e(TAG, "Error creating file: " + ex.toString());
                //TODO: 2017/1/24 - Handle file not created
                AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
                builder.setTitle("Error")
                        .setMessage(ex.toString());

                final AlertDialog dialog = builder.create();
                dialog.show();

            }
            // Continue only if the File was successfully created
            if (photoFile != null) {
                Uri photoURI = FileProvider.getUriForFile(context,
                        "com.example.myapp",
                        photoFile);
                //THIS EXTRA IS NOT BEING ADDED TO THE INTENT
                takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
                startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);

                galleryAddPic(context, photoFile.getAbsolutePath());
            }
        }
    }

onActivityResult触发该方法时,该 方法Intent为空.这是代码:

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == REQUEST_TAKE_PHOTO && resultCode == RESULT_OK) {
        //These extras are empty. I have used the debug tool, and there is nothing in here. 
        Bundle extras = data.getExtras();
        //extras is null
        imageBitmap = (Bitmap) extras.get("data");
        previewImage.setImageBitmap(imageBitmap);
    }
}

为什么意图是空的？我该怎么做才能解决这个问题？

1> CommonsWare..：

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为什么意图是空的？

因为您要求它是空的,包含EXTRA_OUTPUT在您的ACTION_IMAGE_CAPTURE请求中.引用文档:

调用者可以传递额外的EXTRA_OUTPUT来控制该图像的写入位置.如果EXTRA_OUTPUT不存在,则在额外字段中返回小尺寸图像作为Bitmap对象.这对于只需要小图像的应用程序非常有用.如果存在EXTRA_OUTPUT,则将将全尺寸图像写入EXTRA_OUTPUT的Uri值.

 

我该怎么做才能解决这个问题？

或者:

摆脱EXTRA_OUTPUT(如果你想要缩略图大小的图像),或

停止寻找"data"额外的,并查看您指定的位置EXTRA_OUTPUT

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@BlackHatSamurai:还有一点需要注意:当相机活动在前台时,您的过程可能会终止.确保在保存的实例状态`Bundle`中保留`photoFile`,以便在发生这种情况时保留它,并且您的活动将被重新创建,作为最终触发`onActivityResult()`的一部分.