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我使用自定义摄像头和表面视图捕捉图像，但问题是摄像机方向不正确，以下是我的代码，并且对我糟糕的英语交流感到抱歉。预计不会摄像机方位在android中不正确
public class Camera_Activity extends Activity implements
SurfaceHolder.Callback {
private Camera camera = null;
private SurfaceView cameraSurfaceView = null;
private SurfaceHolder cameraSurfaceHolder = null;
private boolean previewing = false;
private Display display = null;
private static int wid = 0, hgt = 0;
private LayoutInflater layoutInflater = null;
private View cameraViewControl = null;
private LayoutParams layoutParamsControl = null;
private Button btnCapture = null;
ImageView mImgView1;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
display = getWindowManager().getDefaultDisplay();
wid = display.getWidth();
hgt = display.getHeight();
getWindow().setFormat(PixelFormat.TRANSLUCENT);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.camera);
mImgView1 = (ImageView) findViewById(R.id.mImgView1);
mImgView1.setImageResource(R.drawable.first_leg);
cameraSurfaceView = (SurfaceView) findViewById(R.id.cameraSurfaceView);
cameraSurfaceHolder = cameraSurfaceView.getHolder();
cameraSurfaceHolder.addCallback(this);
cameraSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
layoutInflater = LayoutInflater.from(getBaseContext());
layoutParamsControl = new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT);
cameraViewControl = layoutInflater.inflate(R.layout.cambutton, null);
this.addContentView(cameraViewControl, layoutParamsControl);
cameraViewControl = layoutInflater.inflate(R.layout.vampireimage, null);
this.addContentView(cameraViewControl, layoutParamsControl);
btnCapture = (Button) findViewById(R.id.btnCapture);
btnCapture.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
camera.takePicture(cameraShutterCallback,
cameraPictureCallbackRaw, cameraPictureCallbackJpeg);
}
});
}
ShutterCallback cameraShutterCallback = new ShutterCallback() {
@Override
public void onShutter() {
// TODO Auto-generated method stub
System.out.println("Hello Shutter");
}
};
PictureCallback cameraPictureCallbackRaw = new PictureCallback() {
@Override
public void onPictureTaken(byte[] data, Camera camera) {
// TODO Auto-generated method stub
System.out.println("Hello Picture");
}
};
PictureCallback cameraPictureCallbackJpeg = new PictureCallback() {
@Override
public void onPictureTaken(byte[] data, Camera camera) {
// TODO Auto-generated method stub
Bitmap cameraBitmap = BitmapFactory.decodeByteArray(data, 0,
data.length);
wid = cameraBitmap.getWidth();
hgt = cameraBitmap.getHeight();
Bitmap newImage = Bitmap.createBitmap(wid, hgt,
Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(newImage);
canvas.drawBitmap(cameraBitmap, 0f, 0f, null);
Constants.mImageBitmap.clear();
Constants.mImageBitmap.add(cameraBitmap);
File storagePath = new File(
Environment.getExternalStorageDirectory() + "/Photos/");
storagePath.mkdirs();
File myImage = new File(storagePath, "1.jpg");
try {
FileOutputStream out = new FileOutputStream(myImage);
newImage.compress(Bitmap.CompressFormat.JPEG, 80, out);
out.flush();
out.close();
} catch (FileNotFoundException e) {
Log.d("In Saving File", e + "");
} catch (IOException e) {
Log.d("In Saving File", e + "");
}
camera.startPreview();
newImage.recycle();
newImage = null;
// cameraBitmap.recycle();
// cameraBitmap = null;
Intent mInPreview = new Intent(Camera_Activity.this,
Preview_Activity.class);
mInPreview.putExtra("Value", "First");
startActivity(mInPreview);
finish();
}
};
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
// TODO Auto-generated method stub
if (previewing) {
camera.stopPreview();
previewing = false;
System.out.println("Hello 2");
}
try {
Camera.Parameters parameters = camera.getParameters();
Display display = ((WindowManager) getSystemService(WINDOW_SERVICE))
.getDefaultDisplay();
if (display.getRotation() == Surface.ROTATION_0) {
parameters.setPreviewSize(height, width);
camera.setDisplayOrientation(90);
}
if (display.getRotation() == Surface.ROTATION_90) {
parameters.setPreviewSize(width, height);
}
if (display.getRotation() == Surface.ROTATION_180) {
parameters.setPreviewSize(height, width);
}
if (display.getRotation() == Surface.ROTATION_270) {
parameters.setPreviewSize(width, height);
camera.setDisplayOrientation(180);
}
camera.setParameters(parameters);
camera.setPreviewDisplay(cameraSurfaceHolder);
camera.startPreview();
previewing = true;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
// TODO Auto-generated method stub
try {
camera = Camera.open();
} catch (RuntimeException e) {
Toast.makeText(
getApplicationContext(),
"Device camera is not working properly, please try after sometime.",
Toast.LENGTH_LONG).show();
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
// TODO Auto-generated method stub
System.out.println("Hello 3");
camera.stopPreview();
camera.release();
camera = null;
previewing = false;
}
@Override
public void onBackPressed() {
// TODO Auto-generated method stub
super.onBackPressed();
AlertDialog.Builder alert = new AlertDialog.Builder(this);
alert.setTitle("3DSoles");
alert.setMessage("Do U Want to Exit?");
alert.setNegativeButton("No", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
alert.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
finish();
}
});
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if (keyCode == KeyEvent.KEYCODE_BACK) {
AlertDialog.Builder alert = new AlertDialog.Builder(this);
alert.setTitle("3DSoles");
alert.setMessage("Do U Want to Exit?");
alert.setNegativeButton("No",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
});
alert.setPositiveButton("Yes",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
finish();
}
});
}
return super.onKeyDown(keyCode, event);
}
}
您正在调整onSurfaceChanged方法内的方向，您确定它是必需的吗？ – Egor 2012-03-29 10:11:34
如果我删除camera.setDisplayOrientation（180）;行，输出没有变化。 – 2012-03-29 10:22:59
如果你注释掉整个方法体，会发生什么？ – Egor 2012-03-29 11:16:51