CameraPreview.java

package androidbee.media.camera1;

import java.io.IOException;
import android.content.Context;
import android.hardware.Camera;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class CameraPreview extends SurfaceView implements SurfaceHolder.Callback {
	    SurfaceHolder mHolder;
	    Camera mCamera;
	    
	    CameraPreview(Context context) {
	        super(context);
	        
	        // Install a SurfaceHolder.Callback so we get notified when the
	        // underlying surface is created and destroyed.
	        mHolder = getHolder();
	        mHolder.addCallback(this);
	        mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
	    }

	    public void surfaceCreated(SurfaceHolder holder) {
	        // The Surface has been created, acquire the camera and tell it where
	        // to draw.
	        mCamera = Camera.open();
	        try {
	           mCamera.setPreviewDisplay(holder);
	        } catch (IOException exception) {
	            mCamera.release();
	            mCamera = null;
	            // TODO: add more exception handling logic here
	        }
	    }

	    public void surfaceDestroyed(SurfaceHolder holder) {
	        // Surface will be destroyed when we return, so stop the preview.
	        // Because the CameraDevice object is not a shared resource, it's very
	        // important to release it when the activity is paused.
	        mCamera.stopPreview();
	        mCamera.release();
	        mCamera = null;
	    }

	    public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
	        // Now that the size is known, set up the camera parameters and begin
	        // the preview.
	        Camera.Parameters parameters = mCamera.getParameters();
	        parameters.setPreviewSize(w, h);
	        mCamera.setParameters(parameters);
	        mCamera.startPreview();
	    }

}