Android相机 Intent 返回null ...有时

This question already has answers here:

Getting Uri Null in capture photo from camera intent in samsung mobile

(3个答案)


5年前关闭。




我正在2种不同的物理设备中调试我的应用程序:

摩托罗拉Moto G，Android 4.4.2

LG OPTIMUS L5 II，Android 4.1.2

我按一个按钮调用相机:

buttonCamera.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                startActivityForResult(intent, REQUEST_IMAGE_CAPTURE);
            }
        });

我管理这样的 Intent 结果:

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

    if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
            Uri selectedImage = data.getData(); // <-- Sometimes null
    }

这里的问题是，在Motorola Moto G中data.getData()为null，但在LG OPTIMUS中不是ojit_code，这是为什么？如何避免在Motorola Moto G中获得零值？

最佳答案

这个答案有点晚了，但是我刚才也遇到了同样的问题，我找到了一个解决方案:

private static final String STATE_FILE_URI = "state_file_uri";
private static final int BROWSE_CAMERA = 111;
private String fileUri;

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        outState.putString(STATE_FILE_URI, fileUri);
        super.onSaveInstanceState(outState);
    }

    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
        fileUri = savedInstanceState.getString(STATE_FILE_URI);
        super.onRestoreInstanceState(savedInstanceState);
    }

    private void takePictureIntent(){
        Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        fileUri = "your_uri";
        takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(fileUri)));
        startActivityForResult(takePictureIntent, BROWSE_CAMERA);
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode == RESULT_OK) {
            if (requestCode == BROWSE_CAMERA) {
                if (data == null) {
                    onDeliveryPicture(Uri.parse("file://" + fileUri));
                } else {
                    onDeliveryPicture(data.getData());
                }
            }
        }
    }

    private void onDeliveryPicture(Uri uri) {
        ...
    }

希望能帮助到你!