我在 MainActivity 中创建了一个 SurfaceView 子类，它通过画布绘制运行一些动画/游戏/线程，我希望在游戏结束后立即出现一个对话框。我创建了一个名为 openNewGameDialog 的函数，我在其中调用 new AlertDialog.Builder(MainActivity.this) 但是因为我是从线程调用它，所以它给出了错误。请帮忙！！以下是代码：
public class MainActivity extends Activity implements OnTouchListener{
GameSurface dSurface;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
dSurface=new GameSurface(this);
dSurface.setOnTouchListener(this);
initialize();
setContentView(dSurface);
}
private void initialize(){
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
dSurface.pause();
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
dSurface.resume();
}
private void openNewGameDialog(){
new AlertDialog.Builder(MainActivity.this)
.setTitle("hhhhhh")
.setItems(R.array.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
})
.show();
}
public class GameSurface extends SurfaceView implements Runnable{
SurfaceHolder gameHolder;
Thread gameThread = null;
public GameSurface(Context context) {
super(context);
// TODO Auto-generated constructor stub
gameHolder = getHolder();
}
public void pause(){
isRunning = false;
while(true)
{
try {
gameThread.join();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
}
gameThread=null;
}
public void resume(){
isRunning = true;
gameThread = new Thread(this);
gameThread.start();
}
@Override
public void run() {
// TODO Auto-generated method stub
while(isRunning){
if(!gameHolder.getSurface().isValid())
continue;
Canvas canvas = gameHolder.lockCanvas();
canvas.draw something
if game==ends
openNewGameDialog();
gameHolder.unlockCanvasAndPost(canvas);
}
}
}
}