按下主按钮时暂停游戏线程,重新输入恢复游戏线程
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21-12-2019 - |
题
我有一个问题
击中主页按钮时,我的游戏线程类被暂停。但是在重新进入应用程序和onresume()方法时被调用,它应该恢复游戏线程......每一个都是一个力关闭。
这是我的主动:
public class MainActivity extends Activity {
private RelativeLayout relativeLayout;
private GameView gameView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
gameView = new GameView(this, this);
setContentView(R.layout.activity_main);
relativeLayout = (RelativeLayout)findViewById(R.id.mainView);
relativeLayout.addView(gameView);
}
@Override
protected void onPause() {
super.onPause();
gameView.pause();
}
@Override
protected void onResume() {
super.onResume();
if(gameView.getGameThread() != null) {
if(gameView.getGameThread().isRunning == false) {
gameView.resume();
}
}
}
}
.
gameview是追随类的,是Gamethread渲染的SurfaceView:
public class GameView extends SurfaceView{
private GameThread gameThread;
public GameView(Context context, Activity activity) {
super(context);
gameThread = new GameThread(this);
holder = getHolder();
holder.addCallback(new SurfaceHolder.Callback() {
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
gameThread.setRunning(true);
gameThread.start();
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
}
});
}
public GameThread getGameThread() {
return gameThread;
}
public void update() {
}
public void pause() {
gameThread.pause();
}
public void resume() {
gameThread.resumeThread();
}
}
.
这是Gamethread类:
public class GameThread extends Thread{
private GameView view;
public boolean isRunning = false;
public GameThread(GameView view) {
this.view = view;
}
public void setRunning(boolean setRunning) {
isRunning = setRunning;
}
public void stopThread() {
isRunning = false;
}
public void run() {
while(isRunning) {
Canvas c = null;
view.update();
try {
c = view.getHolder().lockCanvas();
synchronized (view.getHolder()) {
view.draw(c);
}
}finally {
if(c != null) {
view.getHolder().unlockCanvasAndPost(c);
}
}
}
}
public void startThread() {
isRunning = true;
}
public void pause() {
isRunning = false;
}
public void resumeThread() {
isRunning = true;
}
}
.
我删除了代码的无关紧要。
在重新输入app the android.view.chorebaper类时打开
任何想法?
解决方案
实际上你没有暂停你的线程(要严格,没有暂停线程这样的东西)。你结束了你的线程。
当您调用PAUSE()时,将isRunning
标志设置为false,这使得线程退出循环并线程结束。当您再次将“isRunning”设置为true时,线程将无法重新启动。
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