Note that below codes are for capturing image with its displayed pixels, not for taking camera. It means, the result image will give actual pixel size of the screen (ie, 1080x768), not multi-megapixel high resolution image of the Camera app. If you want to take an image as Camera app provided, use takePicture method.
In order to capture live preview image in SurfaceView,
public class CameraSurfaceView extends SurfaceView implements SurfaceHolder.Callback { private static final String TAG = "CameraSurfaceView"; private SurfaceHolder mSurfaceHolder; private Camera mCamera = null; private Bitmap mBitmap; private Context mContext; private Camera.Parameters mParameters; private byte[] byteArray; private List<Camera.Size> mSupportedPreviewSizes; private Camera.Size mPreviewSize; public CameraSurfaceView (Context context) { this(context, null); } public CameraSurfaceView (Context context, AttributeSet attrs) { this(context, attrs, 0); } public CameraSurfaceView (Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); mContext = context; try { mSurfaceHolder = getHolder(); mSurfaceHolder.addCallback(this); mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } catch (Exception e) { e.printStackTrace(); } } @Override public void surfaceCreated(final SurfaceHolder surfaceHolder) { if (mCamera == null) { try { mCamera = Camera.open(); } catch (RuntimeException ignored) { } } try { if (mCamera != null) { WindowManager winManager = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); mCamera.setPreviewDisplay(mSurfaceHolder); } } catch (Exception e) { if (mCamera != null) mCamera.release(); mCamera = null; } if (mCamera == null) { return; } else { mCamera.setPreviewCallback(new Camera.PreviewCallback() { @Override public void onPreviewFrame(byte[] bytes, Camera camera) { if (mParameters == null) { return; } byteArray = bytes; } }); } setWillNotDraw(false); } @Override public void surfaceChanged(SurfaceHolder surfaceHolder, int format, int width, int height) { try { mParameters = mCamera.getParameters(); List<Size> cameraSize = mParameters.getSupportedPreviewSizes(); mPreviewSize = cameraSize.get(0); for (Size s : cameraSize) { if ((s.width * s.height) > (mPreviewSize.width * mPreviewSize.height)) { mPreviewSize = s; } } mParameters.setPreviewSize(mPreviewSize.width, mPreviewSize.height); mCamera.setParameters(mParameters); mCamera.startPreview(); } catch (Exception e) { if (mCamera != null) { mCamera.release(); mCamera = null; } } } @Override public void surfaceDestroyed(SurfaceHolder surfaceHolder) { if (mCamera != null) { mCamera.setPreviewCallback(null); mCamera.stopPreview(); mCamera.release(); mCamera = null; } } public Bitmap getBitmap() { try { if (mParameters == null) return null; if (mPreviewSize == null) return null; int format = mParameters.getPreviewFormat(); YuvImage yuvImage = new YuvImage(byteArray, format, mPreviewSize.width, mPreviewSize.height, null); ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); Rect rect = new Rect(0, 0, mPreviewSize.width, mPreviewSize.height); yuvImage.compressToJpeg(rect, 75, byteArrayOutputStream); BitmapFactory.Options options = new BitmapFactory.Options(); options.inPurgeable = true; options.inInputShareable = true; mBitmap = BitmapFactory.decodeByteArray(byteArrayOutputStream.toByteArray(), 0, byteArrayOutputStream.size(), options); byteArrayOutputStream.flush(); byteArrayOutputStream.close(); } catch (IOException ioe) { ioe.printStackTrace(); } return mBitmap; } public Camera getCamera() { return mCamera; } }
