SurfaceView und drawText Problem

1Paint p = new Paint();
2
3 public void onCreate(Bundle savedInstanceState) {
4 super.onCreate(savedInstanceState);
5 mCanvasView = new CanvasView(this);
6 mCanvasView.setOnDrawNewFrameListener(this);
7 setContentView(mCanvasView);
8 }
9
10 public void onDraw(Canvas c) {
11//Ermitteln von fps usw.
12...
13 // Zeichne Hintergrund
14 c.drawRGB(75, 242, 150);
15
16 //Zeichnen von ein paar Bitmaps, klappt anstandslos!
17
18
19 // Zeichen FPS
20 p.setColor(Color.BLACK);
21 p.setTextSize(20);
22 p.setStyle(Style.FILL);
23 c.drawText("FPS: " + fps, 0, 0, p);
24 }

1public class CanvasView extends SurfaceView implements Callback {
2 private static final long THREAD_SLEEP = 10;
3 private SurfaceHolder holder = null;
4 private boolean mThreadRunning = false;
5 private onDrawNewFrameListener odl = null;
6
7
8 public CanvasView(Context context) {
9 super(context);
10 init();
11 }
12
13 public CanvasView(Context context, AttributeSet attrs) {
14 super(context, attrs);
15 init();
16 }
17
18 public CanvasView(Context context, AttributeSet attrs, int defStyle) {
19 super(context, attrs, defStyle);
20 init();
21 }
22
23 private void init() {
24 holder = getHolder();
25 holder.addCallback(this);
26 }
27
28 @Override
29 public void surfaceChanged(SurfaceHolder holder, int format, int width,
30 int height) {
31
32 }
33
34 @Override
35 public void surfaceCreated(SurfaceHolder holder) {
36 mThreadRunning = true;
37 new Thread(this).start();
38 }
39
40 @Override
41 public void surfaceDestroyed(SurfaceHolder holder) {
42 mThreadRunning = false;
43 }
44
45 @Override
46 public void run() {
47 // Runns while we want to draw in our Surface
48 Canvas can;
49 while (mThreadRunning) {
50 if (odl != null) {
51 can = holder.lockCanvas();
52 odl.onDraw(can);
53 holder.unlockCanvasAndPost(can);
54 }
55 try {
56 Thread.sleep(THREAD_SLEEP);
57 } catch (InterruptedException e) {
58 e.printStackTrace();
59 Log.e("CanvasView", "InterruptedException while sleep in run!");
60 }
61 }
62 }
63
64 public void setOnDrawNewFrameListener(onDrawNewFrameListener odl) {
65 this.odl = odl;
66 }
67
68 public interface onDrawNewFrameListener {
69 public void onDraw(Canvas c);
70 }
71
72}

1String fps = ...;
2
3Rect txt = p.getTextBounds(fps, 0, fps.length(),
4 txt);

1c.drawText(fps, 0, txt.height(), p);