custom camera in android
public class CameraPreview extends SurfaceView implements SurfaceHolder.Callback {
private SurfaceHolder mHolder;
private Camera mCamera;
private Context mContext;
public CameraPreview(Context context, Camera camera) {
super(context);
mContext = 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);
mHolder.setFixedSize(100, 100);
}
public void surfaceCreated(SurfaceHolder holder) {
mCamera.setDisplayOrientation(90);
// 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(
"DG_DEBUG", "Error setting camera preview: " + e.getMessage());
}
/*try {
mCamera.setPreviewDisplay(holder);
mCamera.setPreviewCallback(new PreviewCallback() {
public void onPreviewFrame(byte[] data, Camera camera) {
}
});
} catch (Exception e) {
e.printStackTrace();
}*/
}
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
// 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
}
// make any resize, rotate or reformatting changes here
// start preview with new settings
try {
mCamera.setPreviewDisplay(mHolder);
mCamera.startPreview();
}
catch (Exception e) {
Log.d(
"DG_DEBUG", "Error starting camera preview: " + e.getMessage());
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
// empty. Take care of releasing the Camera preview in your activity.
}
}
and use the below method in your activiy which one wants custom camera
private
void createCamera() {
// Create an instance of Camera
mCamera = getCameraInstance();
// Setting the right parameters in the camera
Camera.Parameters params =
mCamera.getParameters();
// params.setPictureSize(1600, 1200);
params.setPictureFormat(PixelFormat.JPEG);
params.setJpegQuality(85);
mCamera.setParameters(params);
// Create our Preview view and set it as the content of our activity.
mPreview = new CameraPreview(this, mCamera);
FrameLayout preview = (FrameLayout) findViewById(R.id.
camera_preview);
// Calculating the width of the preview so it is proportional.
float widthFloat = (float) (deviceHeight) * 4 / 3;
int width = Math.round(widthFloat);
// Resizing the LinearLayout so we can make a proportional preview. This
// approach is not 100% perfect because on devices with a really small
// screen the the image will still be distorted - there is place for
// improvment.
// LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(width, deviceHeight);
// preview.setLayoutParams(layoutParams);
// Adding the camera preview after the FrameLayout and before the button
// as a separated element.
preview.addView(
mPreview, 0);
}
Take care of releasing the Camera preview in your activity.
