java - 获取我的 Activity 结果的空数据

Question

我有这段代码，我想拍照，然后 onactivityresult 从 Intent 中获取数据，并将其转换为位图以显示 Activity 的一些预览，但数据为空，我不知道为什么。

cameraButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            // create Intent to take a picture and return control to the calling application
            Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);


        }
    });

然后是 Activity 结果:

protected void onActivityResult(int requestCode, int resultCode,
            Intent imageReturnedIntent) {
        super.onActivityResult(requestCode, resultCode, imageReturnedIntent);



                switch (requestCode) {
        case CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE:
            if (resultCode == RESULT_OK) {

                data = imageReturnedIntent.getData();
                InputStream stream;



                try {
                    stream = super.getContentResolver().openInputStream(data);

                    bitmap = BitmapFactory.decodeStream(stream);
                    stream.close();
                } catch (FileNotFoundException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } 

                imageView.setImageBitmap(bitmap);   

    }
    }

Answer 1

尝试一下

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE && resultCode == RESULT_OK) {
        Bundle extras = data.getExtras();
        Bitmap imageBitmap = (Bitmap) extras.get("data");
        mImageView.setImageBitmap(imageBitmap);
    }
}

更多详情请访问Take a Photo with the Camera