How Can I Show My Camera Preview

I wrote a class for camera preview public class CameraView extends SurfaceView implements SurfaceHolder.Callback{ private Camera camera; public CameraView(Context context

Solution 1:

Use FrameLayout and add CameraPreview to it.



// Create an instance of Camera
        mCamera = getCameraInstance();

        // Create our Preview view and set it as the content of our activity.
        mPreview = newCameraPreview(this, mCamera);
        FrameLayoutpreview= (FrameLayout) findViewById(R.id.camera_preview);
        preview.addView(mPreview);


/** A basic Camera preview class */publicclassCameraPreviewextendsSurfaceViewimplementsSurfaceHolder.Callback {
    private SurfaceHolder mHolder;
    private Camera mCamera;

    publicCameraPreview(Context context, Camera camera) {
        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);
    }

    publicvoidsurfaceCreated(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());
        }
    }

    publicvoidsurfaceDestroyed(SurfaceHolder holder) {
        // empty. Take care of releasing the Camera preview in your activity.
    }

    publicvoidsurfaceChanged(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 existreturn;
        }

        // stop preview before making changestry {
            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// start preview with new settingstry {
            mCamera.setPreviewDisplay(mHolder);
            mCamera.startPreview();

        } catch (Exception e){
            Log.d(TAG, "Error starting camera preview: " + e.getMessage());
        }
    }
}


    <FrameLayout
        android:id="@+id/camera_preview"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="1"
        />

Solution 2:

try this:

You need to Change in your SurfaceView in XML File.

Replace your surfaceView with this

<CameraView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/camera_view" />

and your remaining code is Right.let me know after change

Hope this will helps...(:

Solution 3:

At first you should add the camera permission in you Manifest.xml :

android:name="android.permission.CAMERA

And, add this in your activity :

@OverrideprotectedvoidonResume() {
    super.onResume();
    mCameraView.start();
}

@OverrideprotectedvoidonPause() {
    mCameraView.stop();
    super.onPause();
}

Check this link, it's the easiest way to do it : https://github.com/google/cameraview