以下にこのコードがあります。問題は、カメラの向きを縦向きに設定していることです。プレビューでも縦向きです。しかし、そのビデオを再生すると、横向きモードで表示されます。なぜ、どうすればこれを修正できるのか知っていますか?再生時に VideoView を回転させる方法や、録画後にビデオ自体を回転させる方法はありますか? お願いします、助けてください、私が尋ねるところならどこでも、誰もそれを修正する理由と方法を知りません...
コードは次のとおりです。
public class BetaRecordActivity extends Activity {
private Preview preview;
private Camera camera;
private MediaRecorder recorder;
private int defaultCameraId;
private int videoCount;
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.beta_record, menu);
return true;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_beta_record);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
initCameraAndPreview();
videoCount = 0;
preview.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
releaseCamera();
getThatCamReady();
recorder.start();
videoCount ++;
break;
case MotionEvent.ACTION_MOVE:
break;
case MotionEvent.ACTION_UP:
stopRecording();
break;
}
return true;
}
});
}
@Override
protected void onResume() {
super.onResume();
}
@Override
protected void onPause() {
super.onPause();
}
private boolean getThatCamReady() {
camera = getCameraInstance();
setCameraDisplayOrientation(this, defaultCameraId, camera);
camera.unlock();
recorder = new MediaRecorder();
recorder.setCamera(camera);
recorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
recorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));
File tempFile = new File(Environment.getExternalStorageDirectory(), "/rec/temp/video_" + String.valueOf(videoCount) + ".mp4");
recorder.setOutputFile(tempFile.getPath());
recorder.setMaxDuration(12500);
recorder.setMaxFileSize(7000000);
recorder.setPreviewDisplay(preview.getHolder().getSurface());
try {
recorder.prepare();
} catch (IllegalStateException e) {
releaseMediaRecorder();
return false;
} catch (IOException e) {
releaseMediaRecorder();
return false;
}
return true;
}
private void stopRecording() {
//timer.pause();
try {
recorder.stop();
} catch(RuntimeException stopException) {
// Handle the cleanup here
//badList.add(videoCount);
//videoCount--;
//RecordActivity.this.timeLeft.setText(String.valueOf(videoCount));
}
releaseMediaRecorder();
}
private void initCameraAndPreview() {
// Find the total number of cameras available
int numberOfCameras = Camera.getNumberOfCameras();
// Find the ID of the default camera
CameraInfo cameraInfo = new CameraInfo();
for (int i = 0; i < numberOfCameras; i++) {
Camera.getCameraInfo(i, cameraInfo);
if (cameraInfo.facing == CameraInfo.CAMERA_FACING_BACK) {
defaultCameraId = i;
}
}
camera = getCameraInstance();
setCameraDisplayOrientation(this, defaultCameraId, camera);
preview = new Preview(this, camera);
FrameLayout myCameraPreview = (FrameLayout)findViewById(R.id.videoview);
myCameraPreview.addView(preview);
}
private void releaseMediaRecorder(){
if (recorder != null) {
recorder.reset();
recorder.release();
recorder = null;
camera.lock();
}
}
private void releaseCamera(){
if (camera != null){
camera.release();
camera = null;
}
}
private Camera getCameraInstance(){
// TODO Auto-generated method stub
Camera c = null;
try {
c = Camera.open(); // attempt to get a Camera instance
}
catch (Exception e){
// Camera is not available (in use or does not exist)
}
return c; // returns null if camera is unavailable
}
public static void setCameraDisplayOrientation(Activity activity,
int cameraId, android.hardware.Camera camera) {
android.hardware.Camera.CameraInfo info =
new android.hardware.Camera.CameraInfo();
android.hardware.Camera.getCameraInfo(cameraId, info);
int rotation = activity.getWindowManager().getDefaultDisplay()
.getRotation();
int degrees = 0;
switch (rotation) {
case Surface.ROTATION_0: degrees = 0; break;
case Surface.ROTATION_90: degrees = 90; break;
case Surface.ROTATION_180: degrees = 180; break;
case Surface.ROTATION_270: degrees = 270; break;
}
int result;
if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
result = (info.orientation + degrees) % 360;
result = (360 - result) % 360; // compensate the mirror
} else { // back-facing
result = (info.orientation - degrees + 360) % 360;
}
camera.setDisplayOrientation(result);
}
}