Android相机Intent在RESULT_OK情况下不返回

Question

我正试图站起来通过Intents使用相机的简单Android应用程序.代码与Android文档中的代码非常相似,但它对我不起作用.

在调用startActivityForResult()之后,相机应用程序会按预期打开,但在我拍完照片后它永远不会返回(？!).具体来说,在我拍照并选择接受图标(Galaxy Nexus上的复选标记)后,它不会返回.但是在我选择取消图标(同一部手机上的"X")后它确实会返回.

这是代码(请注意,我正在使用Fragment,而不是Activity):

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

    View view = inflater.inflate(R.layout.my_layout, container, false);

    final Button btnCamera = (Button) view.findViewById(R.id.cameraid);

    View.OnClickListener handler = new View.OnClickListener() {
        public void onClick(View v) {
            if (v == btnCamera) {
                Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

                // create a file to save the image
                File imagesFolder = new File(Environment.getExternalStorageDirectory(), "MyImages");
                imagesFolder.mkdirs();
                File image = new File(imagesFolder, "image_001.jpg");
                Uri uriSavedImage = Uri.fromFile(image);

                // start the image capture Intent
                cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage);
                startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
            }
        }
    }
    btnCamera.setOnClickListener(handler);
}

和

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
        if (resultCode == Activity.RESULT_OK) {
            // Image captured and saved to fileUri specified in the Intent
            Toast.makeText(getActivity(), "Image saved to:\n" +
                     data.getData(), Toast.LENGTH_LONG).show();
        }
        else if (resultCode == Activity.RESULT_CANCELED) {
            // User cancelled the image capture
        } else {
            // Image capture failed, advise user
        }
    }

为了使这项工作,我需要改变什么？谢谢.

Answer 1

哎呀,当我添加清单行时,它有效:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.CAMERA"/>

如果您的应用依赖外部相机应用,我错误地认为这些线路不是必需的.但我错了!谢谢.