the camera preview is showing a distorted image, which is elongated while in portrait mode and flattened while in landscape. I have already resized preview with a million techniques. Then I read somewhere it must be something with resizing the SurfaceView. But so far I have not found anything suitable.
This is my activity.java file:
public class CameraActivity extends Activity { private Camera mCamera; private CameraPreview mPreview; private FrameLayout preview; private static final String TAG = "CameraActivity"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_camera); if (checkCameraHardware(getBaseContext())){ // Create an instance of Camera mCamera = getCameraInstance(); // Create our Preview view and set it as the content of our activity. mPreview = new CameraPreview(this, mCamera, CameraActivity.this); preview = (FrameLayout) findViewById(R.id.camera_preview); preview.addView(mPreview); } } /** Check if this device has a camera */ private boolean checkCameraHardware(Context context) { if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA)){ Log.d(TAG, "Camera Available"); return true; } else { Log.d(TAG, "No Camera Found"); return false; } } /** A safe way to get an instance of the Camera object. */ public Camera getCameraInstance(){ Camera c = null; try { int i = Camera.getNumberOfCameras(); releaseCamera(); //in case camera is being accessed by any other app. Log.d(TAG, "Number of Cameras "+i +"\n"); c = Camera.open(); // attempt to get a Camera instance Log.d(TAG, "Camera Opened"); } catch (Exception e){ Log.d(TAG, "Camera Can't Be Accessed"); } return c; // returns null if camera is unavailable } @Override protected void onPause() { super.onPause(); releaseCamera(); // release the camera immediately on pause event } private void releaseCamera(){ if (mCamera != null){ //mCamera.setPreviewCallback(null); mPreview.getHolder().removeCallback(mPreview); mCamera.release(); // release the camera for other applications } } This is my camera preview class:
@SuppressLint("ViewConstructor") public class CameraPreview extends SurfaceView implements SurfaceHolder.Callback { private static final String TAG = "CameraPreview"; private SurfaceHolder mHolder; private Camera mCamera; private Size mPreviewSize; @SuppressWarnings("deprecation") public CameraPreview(Context context, Camera camera, Activity activity) { super(context); mCamera = camera; // Install a SurfaceHolder.Callback so we get notified when the // underlying surface is created and destroyed. mHolder = getHolder(); mHolder.addCallback(this); // deprecated setting, but required on Android versions prior to 3.0 mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } public void surfaceCreated(SurfaceHolder holder) { // The Surface has been created, now tell the camera where to draw the preview. try { mCamera.setPreviewDisplay(holder); mCamera.startPreview(); } catch (IOException e) { Log.d(TAG, "Error setting camera preview: " + e.getMessage()); } } public void surfaceDestroyed(SurfaceHolder holder) { // empty. Take care of releasing the Camera preview in your activity. } public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { // If your preview can change or rotate, take care of those events here. // Make sure to stop the preview before resizing or reformatting it. if (mHolder.getSurface() == null){ // preview surface does not exist return; } // stop preview before making changes try{ mCamera.stopPreview(); } catch (Exception e){ // ignore: tried to stop a non-existent preview } // set preview size and make any resize, rotate or // reformatting changes here Camera.Parameters parameters = mCamera.getParameters(); List<Size> localSizes = mCamera.getParameters().getSupportedPreviewSizes(); mPreviewSize = localSizes.get(0); Log.d(TAG, "Width " + mPreviewSize.width); Log.d(TAG, "Height " + mPreviewSize.height); parameters.setPreviewSize(mPreviewSize.width, mPreviewSize.height ); requestLayout(); mCamera.setParameters(parameters); //start preview with new settings try { mCamera.setPreviewDisplay(mHolder); mCamera.startPreview(); } catch (Exception e){ Log.d(TAG, "Error starting camera preview: " + e.getMessage()); } } 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 = 0; break; case Surface.ROTATION_270: degrees = -90; 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); } } And this is my activity.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:baselineAligned="false" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".CameraActivity" > <FrameLayout android:id="@+id/camera_preview" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight = "1" /> </LinearLayout> 
