如果在使用ActivityResultContracts.TakePicture()时屏幕旋转，uri将会发生丢失的问题。为了解决这个问题，可以将Uri传递给onSaveInstanceState()方法以在屏幕旋转后恢复其状态。如果不恢复状态，则无法获得拍照的实际路径。以下是解决此问题的示例代码：

public class MainActivity extends AppCompatActivity {

    private static final int REQUEST_CODE = 1;
    private static final String STATE_URI = "state_uri";

    private Uri mUri;

    private ActivityResultLauncher mStartForResult = registerForActivityResult(
            new ActivityResultContracts.TakePicture(), result -> {
                if (result) {
                    // Do something with the saved image uri
                }
            });

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Check if there is a saved uri
        if (savedInstanceState != null) {
            mUri = savedInstanceState.getParcelable(STATE_URI);
        }

        // Capture a picture
        capturePicture();
    }

    @Override
    protected void onSaveInstanceState(@NonNull Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putParcelable(STATE_URI, mUri);
    }

    private void capturePicture() {
        File imageFile = createImageFile();

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            mUri = FileProvider.getUriForFile(this, getPackageName() + ".fileprovider", imageFile);
        } else {
            mUri = Uri.fromFile(imageFile);
        }

        mStartForResult.launch(mUri);
    }

    private File createImageFile() {
        // Create an image file name
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault()).format(new Date());
        String imageFileName = "JPEG_" + timeStamp + "_";

        // Save the image file in the external storage directory
        File storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
        return new File(storageDir, imageFileName + ".jpg");
    }
}