Problem bei Thread beenden und aufrufen einer Activity

1public class GameView extends SurfaceView {
2
3 private GameThread gameThread;
4 private Bitmap bitmap;
5 private SurfaceHolder surfaceHolder;
6 private Canvas canvas;
7 private BalkenSprite spielerBalken;
8 private BalkenSprite gegnerBalken;
9 private BallSprite ballSprite;
10 private float density;
11 private int punkte;
12 private String punkteString;
13 private boolean daneben;
14 private MainActivity main = new MainActivity();
15 private boolean retry = true;
16
17
18 public GameView(Context context) {
19 super(context);
20 gameThread = new GameThread(this);
21 surfaceHolder = getHolder();
22 surfaceHolder.addCallback(new SurfaceHolder.Callback() {
23
24 @Override
25 public void surfaceDestroyed(SurfaceHolder arg0) {
26 //boolean retry = true;
27 gameThread.setRunning(false);
28 while(retry) {
29 try {
30 gameThread.join();
31 retry = false;
32 }
33 catch (InterruptedException e) {
34
35 }
36
37 }
38 }
39
40 @Override
41 public void surfaceCreated(SurfaceHolder arg0) {
42 gameThread.setRunning(true);
43 gameThread.start();
44
45 }
46
47 @Override
48 public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2,
49 int arg3) {
50 // TODO Auto-generated method stub
51
52 }
53 });
54 spielerBalken = new BalkenSprite(this);
55 gegnerBalken = new BalkenSprite(this);
56 ballSprite = new BallSprite(this);
57 System.out.println("width/2: " + getWidth() / 2);
58 daneben = false;
59 main = (MainActivity) context;
60 }
61
62 public void onDraw(Canvas canvas) {
63 canvas.drawColor(Color.BLACK);
64 spielerBalken.onDraw(canvas);
65 gegnerBalken.setY(ballSprite.getY());
66 gegnerBalken.onDraw(canvas);
67 gegnerBalken.setX(getWidth() - 60);
68 ballSprite.onDraw(canvas);
69
70 /** Punktestand anzeigen */
71 int fontSize = 30;
72 int yTextPos = getResources().getDisplayMetrics().heightPixels / 20;
73 Typeface font = Typeface.create("Arial", Typeface.NORMAL);
74
75 Paint paint = new Paint();
76 paint.setColor(Color.WHITE);
77 paint.setTypeface(font);
78 paint.setTextSize(fontSize);
79 paint.setAntiAlias(true);
80 punkteString = String.valueOf(ballSprite.getTreffer());
81 int x = (int) (getResources().getDisplayMetrics().widthPixels / 1.6);
82 canvas.drawText(punkteString, x, yTextPos, paint);
83
84 pruefeTreffer();
85
86 if (daneben) {
87 main.gameOver();
88 return;
89 }
90
91 abprallen();
92 }
93
94 @Override
95 public boolean onTouchEvent(MotionEvent event) {
96 if (event.getAction() == MotionEvent.ACTION_DOWN) {
97 spielerBalken.obBeruehrt((int) event.getX(), (int) event.getY());
98 }
99
100 if (event.getAction() == MotionEvent.ACTION_MOVE) {
101 // if(spielerBalken.getTouched()) {
102 spielerBalken.setY((int) event.getY() - (spielerBalken.getHoehe() / 2));
103 }
104 // }
105
106 if (event.getAction() == MotionEvent.ACTION_UP) {
107 if (spielerBalken.getTouched()) {
108 spielerBalken.setTouched(false);
109 }
110 }
111 return true;
112 }
113
114 public void pruefeTreffer() {
115 if (ballSprite.getX() <= spielerBalken.getX() + spielerBalken.getBreite() && (ballSprite.getY() + ballSprite.getHoehe() < spielerBalken.getY() || ballSprite.getY() >spielerBalken.getY() + spielerBalken.getHoehe())) {
116 ballSprite.setxSpeed(0);
117 ballSprite.setySpeed(0);
118 daneben = true;
119 // aufrufen des GameOver-Screens
120 //main.gameOver();
121 }
122 }

1package com.example.pong;
2
3import android.graphics.Canvas;
4
5public class GameThread extends Thread {
6
7
8 private boolean isRunning=false;
9 private Canvas canvas;
10 private GameView gameView;
11
12
13
14 public GameThread(GameView gameView) {
15 this.gameView = gameView;
16 }
17
18
19
20 public synchronized void run() {
21 while(isRunning) {
22 Canvas canvas = null;
23 try {
24 canvas = gameView.getHolder().lockCanvas();
25 synchronized (gameView.getHolder()) {
26 gameView.onDraw(canvas);
27 }
28 }
29 finally {
30 if (canvas != null) {
31 gameView.getHolder().unlockCanvasAndPost(canvas);
32 }
33 }
34 }
35 }
36
37
38
39 public void setRunning(boolean isRunning) {
40 this.isRunning = isRunning;
41 }
42
43
44
45
46}

1package com.example.pong;
2
3import android.app.Activity;
4import android.content.Intent;
5import android.os.Bundle;
6import android.view.View;
7import android.view.View.OnClickListener;
8import android.widget.Button;
9
10public class GameoverActivity extends Activity {
11
12 @Override
13 protected void onCreate(Bundle savedInstanceState) {
14 super.onCreate(savedInstanceState);
15 setContentView(R.layout.gameover_activity);
16
17 Button button = (Button) findViewById(R.id.neustartButton);
18 button.setOnClickListener(new OnClickListener() {
19 public void onClick(View v) {
20 Intent intent = new Intent(GameoverActivity.this, MainActivity.class);
21 startActivity(intent);
22 finish();
23 }
24 });
25
26 Button button2 = (Button) findViewById(R.id.beendenButton);
27 button2.setOnClickListener(new OnClickListener() {
28 public void onClick(View v) {
29 finish();
30 }
31 });
32 } // Ende onCreate
33}

1public void gameOver() {
2 Intent intent = new Intent(getApplicationContext(), GameoverActivity.class);
3 startActivity(intent);
4 this.finish();
5 }