Android上的攝像頭方向

Question

朋友們你好。我正在創建一個使用相機代碼的Android應用程序。我已經使用android-API 2.1。我已經在戴爾手機上安裝了我的應用程序，並且相機的方向是正確的。不過，我將我的應用程序安裝在其他Android手機如三星Galaxy S2等。在這裏，問題是相機方向，即使在肖像模式下，相機旋轉90度。任何人都可以建議我是否需要更改任何攝像頭參數，以便相機方向適用於所有手機...？這裏是我的代碼：

//class CameraDemo 
public class CameraDemo extends Activity { 
private static final String TAG = "CameraDemo"; 
Camera camera; 
Preview preview; 
Button buttonClick; 
Button next; 


/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 
try 
{ 

super.onCreate(savedInstanceState); 
setContentView(R.layout.camdemo); 

preview = new Preview(this); 
((FrameLayout) findViewById(R.id.preview)).addView(preview); 

buttonClick = (Button) findViewById(R.id.buttonClick); 
next = (Button) findViewById(R.id.next); 
buttonClick.setOnClickListener(new OnClickListener() { 
public void onClick(View v) { 

preview.camera.takePicture(shutterCallback, rawCallback, jpegCallback); 

try{ 

Constants.takepic=1; 

buttonClick.setEnabled(false); //once click is clicked, its disable 
} 
catch(Exception e) 
{ 
e.printStackTrace(); 
} 
} 


}); 
next.setOnClickListener(new OnClickListener() { 
public void onClick(View v) { 
//preview.camera.takePicture(shutterCallback, rawCallback, jpegCallback); 
if(Constants.takepic==1) 
{ 
Intent intent_new=new Intent(CameraDemo.this,NotesAndUpload.class); 
startActivity(intent_new); 
} 
else 
{ 
Toast.makeText(CameraDemo.this, "Take a picture",5); 
} 

} 


}); 

Log.d(TAG, "onCreate'd"); 
} 
catch(Exception e){} 
} 


ShutterCallback shutterCallback = new ShutterCallback() { 
public void onShutter() { 
Log.d(TAG, "onShutter'd"); 
} 
}; 

/** Handles data for raw picture */ 
PictureCallback rawCallback = new PictureCallback() { 
public void onPictureTaken(byte[] data, Camera camera) { 
Log.d(TAG, "onPictureTaken - raw"); 
} 
}; 

/** Handles data for jpeg picture */ 
PictureCallback jpegCallback = new PictureCallback() { 
public void onPictureTaken(byte[] data, Camera camera) { 
//taking time and date 
Constants.dateValue=dateAndTime("yyyy-MM-dd"); 
Constants.timeValue=dateAndTime("HH:mm:ss"); 
FileOutputStream outStream = null; 
try { 
// write to local sandbox file system 
// outStream = 
CameraDemo.this.openFileOutput(String.format("%d.j pg", 
System.currentTimeMillis()), 0); 
// Or write to sdcard 
long imageNameLong=System.currentTimeMillis(); 
Constants.imageName=new Long(imageNameLong).toString(); 
outStream = new 
FileOutputStream(String.format("/sdcard/%d.jpg",imageNameLong)); 
outStream.write(data); 
Constants.takepic=1; 
outStream.close(); 

Log.d(TAG, "onPictureTaken - wrote bytes: " + data.length); 
} catch (FileNotFoundException e) { 
e.printStackTrace(); 
} catch (IOException e) { 
e.printStackTrace(); 
} finally { 
} 
Log.d(TAG, "onPictureTaken - jpeg"); 
} 
}; 

} 


//Preview Class 
class Preview extends SurfaceView implements SurfaceHolder.Callback { 
private static final String TAG = "Preview"; 

SurfaceHolder mHolder; 
public Camera camera; 

Preview(Context context) { 
super(context); 

// Install a SurfaceHolder.Callback so we get notified when the 
// underlying surface is created and destroyed. 
mHolder = getHolder(); 
mHolder.addCallback(this); 
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BU FFERS); 
} 

public void surfaceCreated(SurfaceHolder holder) { 
// The Surface has been created, acquire the camera and tell it where 
// to draw. 
camera = Camera.open(); 
try { 
camera.setPreviewDisplay(holder); 


camera.setPreviewCallback(new PreviewCallback() { 

public void onPreviewFrame(byte[] data, Camera arg1) { 
/*FileOutputStream outStream = null; 
try { 
outStream = new FileOutputStream(String.format("/sdcard/%d.jpg", 
System.currentTimeMillis())); 
outStream.write(data); 
outStream.close(); 
Log.d(TAG, "onPreviewFrame - wrote bytes: " + data.length); 
} catch (FileNotFoundException e) { 
e.printStackTrace(); 
} catch (IOException e) { 
e.printStackTrace(); 
} finally { 
}*/ 
Preview.this.invalidate(); 
} 
}); 
} catch (IOException e) { 
e.printStackTrace(); 
} 
} 

public void surfaceDestroyed(SurfaceHolder holder) { 
// Surface will be destroyed when we return, so stop the preview. 
// Because the CameraDevice object is not a shared resource, it's very 
// important to release it when the activity is paused. 
camera.stopPreview(); 
camera = null; 
} 

public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { 
// Now that the size is known, set up the camera parameters and begin 
// the preview. 
//CAMERA PARAMETERS NEED TO BE CHANGED :- 
Camera.Parameters parameters = camera.getParameters(); 
parameters.setPreviewSize(w, h); 
if(getResources().getConfiguration().orientation == 
Configuration.ORIENTATION_PORTRAIT) 
{ 
parameters.set("rotation",90); 
parameters.set("orientation", "portrait"); 
} 
if (getResources().getConfiguration().orientation == 
Configuration.ORIENTATION_LANDSCAPE) 
{ 
parameters.set("rotation", 90); 
parameters.set("orientation", "landscape"); 

} 
parameters.set("jpeg-quality", 50); 
camera.setParameters(parameters); 
camera.startPreview(); 
} 

@Override 
public void draw(Canvas canvas) { 
super.draw(canvas); 
Paint p= new Paint(Color.RED); 
Log.d(TAG,"draw"); 
canvas.drawText("PREVIEW", canvas.getWidth()/2, canvas.getHeight()/2, p); 
} 
} 

Answer 1

如果它給你任何錯誤，請張貼，或使用Log.d顯示什麼參數被退回戴爾和使用SendLog，看看三星Galaxy運行返回了。我認爲這是非常重要的，因爲我在其他參數上遇到了一些問題，並且我像那樣解決了它們。