SurfaceView Anwendung hängt

1package de.aaronburmeister.pokemon_jade_edition.app.views;
2
3import android.content.*;
4import android.graphics.*;
5import android.util.*;
6import android.view.*;
7import android.widget.*;
8
9public abstract class PanelView extends SurfaceView implements SurfaceHolder.Callback
10{
11
12 PanelThread _thread;
13 public Paint paint;
14 public Float panelX, panelY;
15 public Canvas canvas;
16
17 public PanelView(Context context) {
18 super(context);
19 getHolder().addCallback(this);
20
21 postInvalidate();
22 }
23
24 public PanelView(Context c, AttributeSet attr) {
25 super(c, attr);
26 getHolder().addCallback(this);
27
28 postInvalidate();
29 }
30
31 @Override
32 public void onDraw(Canvas canvas) {
33 try {
34 if(paint == null) {
35 paint = new Paint();
36
37 panelX = Float.valueOf(canvas.getWidth());
38 panelY = Float.valueOf(canvas.getHeight());
39
40 }
41 if(this.canvas == null) {
42 this.canvas = canvas;
43 }
44
45 onPostInvalidate(canvas);
46
47 if(getHolder().getSurface().isValid()) {
48 postInvalidate();
49 }
50 } catch(Exception e) {
51 new Thread() {
52 public void run() {
53 try {
54 sleep(100);
55 } catch(Exception e) {
56 e.printStackTrace();
57 } finally {
58 postInvalidate();
59 }
60 }
61 }.start();
62 }
63 }
64
65 public abstract void onPostInvalidate(Canvas canvas);
66
67 @Override
68 public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
69 getHolder().getSurface().isValid();
70 }
71
72 class PanelThread extends Thread {
73 private SurfaceHolder _surfaceHolder;
74 private PanelView _panel;
75 private boolean _run = false;
76
77 public PanelThread(SurfaceHolder surfaceHolder, PanelView panel) {
78 _surfaceHolder = surfaceHolder;
79 _panel = panel;
80 }
81
82 public void setRunning(boolean run) {
83 //Allow us to stop the thread
84 _run = run;
85 }
86
87 @Override
88 public void run() {
89 Canvas c;
90 while(_run) {
91 c = null;
92 //When setRunning(false) occurs, _run is
93 //set to false and loop ends, stopping thread
94 try {
95 c = _surfaceHolder.lockCanvas(null);
96 synchronized(_surfaceHolder) {
97 //Insert methods to modify positions of items in onDraw()
98 postInvalidate();
99 }
100 } finally {
101 if (c != null) {
102 _surfaceHolder.unlockCanvasAndPost(c);
103 }
104 }
105 }
106 }
107 }
108
109 @Override
110 public void surfaceCreated(SurfaceHolder holder) {
111 setWillNotDraw(false);
112 //Allows us to use invalidate() to call onDraw()
113
114 _thread = new PanelThread(getHolder(), this);
115 //Start the thread that
116 _thread.setRunning(true);
117 //will make calls to
118 _thread.start();
119 //onDraw()
120
121 getHolder().getSurface().isValid();
122 }
123
124 @Override
125 public void surfaceDestroyed(SurfaceHolder holder) {
126 try {
127 _thread.setRunning(false);
128 //Tells thread to stop
129 _thread.join();
130 //Removes thread from mem.
131 } catch (InterruptedException e) {
132
133 }
134 }
135
136}