[android-developers] Re: problem:FingerPaint using surfaceview

Hi,

I've done a project using FingerPaint.
You could look at it : https://github.com/jrm2k6/ElectronicCalendar

Best,

On Oct 31, 9:56 pm, Hassy <hasith....@gmail.com> wrote:
> Hello,
>
> I'm trying to create a finger paint application using surfaceview.
> I have tried and able to paint on the screen using view but when I use
> surfaceview
> ,I can't draw on the screen.
>
> can anybody tell me how to solve this problem.
>
> CODE
>
> Main Activity
>
> public class MainAct extends Activity {
>         DrawView drawView;
>     @Override
>     public void onCreate(Bundle savedInstanceState) {
>         super.onCreate(savedInstanceState);
>         // Set full screen view
>
> getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
>                 WindowManager.LayoutParams.FLAG_FULLSCREEN);
>         requestWindowFeature(Window.FEATURE_NO_TITLE);
>
>         drawView = new DrawView(this);
>         setContentView(drawView);
>         drawView.requestFocus();
>     }
>
> }
>
> DrawView.class
>
> public class DrawView extends SurfaceView implements
> SurfaceHolder.Callback{
>          private static final String TAG = "DrawView";
>
>             List<Point> points = new ArrayList<Point>();
>             Paint paint = new Paint();
>             Thread mainLoop = null;
>
>             public DrawView(Context context) {
>                 super(context);
>
>                 getHolder().addCallback(this);
>                 setFocusable(true);
>                 setFocusableInTouchMode(true);
>                 paint.setAntiAlias(true);
>                 paint.setColor(Color.WHITE);
>                 paint.setAntiAlias(true);
>             }
>             public void doDraw(){
>                 Canvas canvas = getHolder().lockCanvas();
>                 canvas.drawColor(Color.BLACK);
>                 canvas.drawCircle(50, 50, 50, paint);
>                         for (Point point : points) {
>                             canvas.drawCircle(point.x, point.y, 25, paint);
>                             // Log.d(TAG, "Painting: "+point);
>
>                      }
>                          getHolder().unlockCanvasAndPost(canvas);
>             }
>
>                 @Override
>                 public void surfaceChanged(SurfaceHolder holder, int format, int
> width,
>                                 int height) {
>                         // TODO Auto-generated method stub
>
>                 }
>
>                 @Override
>                 public void surfaceCreated(SurfaceHolder holder) {
>                         // TODO Auto-generated method stub
>                         Log.d(getClass().getName(), "surfaceCreated");
>                         doDraw();
>                 }
>
>                 @Override
>                 public void surfaceDestroyed(SurfaceHolder holder) {
>                         // TODO Auto-generated method stub
>
>                 }
>                 @Override
>                 public boolean onTouchEvent(MotionEvent event) {
>                 // if(event.getAction() != MotionEvent.ACTION_DOWN)
>                 //return super.onTouchEvent(event);
>                         Point point = new Point();
>                 point.x = event.getX();
>                 point.y = event.getY();
>                 points.add(point);
>                 Log.d(TAG, "point: " + point);
>                 return super.onTouchEvent(event);
>             }
>         }
>
>         class Point {
>             float x, y;
>
>             @Override
>             public String toString() {
>                 return x + ", " + y;
>             }
>         }
>
> Thank you
> Hassy

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