Question

我有服装View，基本上，在不同的线程中运行我的游戏（在另一个类中实现），但是虽然有一个被调用的onTouchEvent（），我无法调用onFling方法（测试槽）断点）。

Costum View的课程：

public class RenderGameActivity extends SurfaceView implements
    SurfaceHolder.Callback, GestureDetector.OnGestureListener {

private GameThread thread;
private Context context;

private static boolean showPauseMenu;

private GestureDetector gestureScanner;

public RenderGameActivity(Context context) {
    super(context);
    this.context = context;
    // adding the callback (this) to the surface holder to intercept events
    getHolder().addCallback(this);

    // create the game loop thread
    thread = new GameThread(getHolder(), this);

    // make the GamePanel focusable so it can handle events
    setFocusable(true);

    gestureScanner = new GestureDetector(context, this);
}

@Override
public void surfaceChanged(...) {}

@Override
public void surfaceCreated(SurfaceHolder holder) {
    thread.setName("TacticalDefence.game");
    // at this point the surface is created and
    // we can safely start the game loop
    thread.setRunning(true);
    thread.start();
}

public void surfacePaused() {
    synchronized(thread) {
        thread.setRunning(false);
        try {
            thread.wait();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}

@Override
public void surfaceDestroyed(SurfaceHolder holder) {
    thread.setRunning(false);

    // tell the thread to shut down and wait for it to finish
    // this is a clean shutdown
    boolean retry = true;
    while (retry) {
        try {
            thread.join();
            retry = false;
        } catch (InterruptedException e) {
            // try again shutting down the thread
        }
    }
}

@Override
public boolean onTouchEvent(MotionEvent event) {
    Game.onTouchEvent(event);
    return gestureScanner.onTouchEvent(event);
}

public void render(Canvas canvas) {
    Game.onDraw(context, canvas);
    // display fps
    if(IsInDebug.isInDebugMode(context)) displayFps(canvas, avgFps);
}

/**
 * This is the game update method. It iterates through all the objects
 * and calls their update method if they have one or calls specific
 * engine's update method.
 */
public void update() { Game.onUpdate();}

/*...*/

@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
    return Game.onFling(e1, e2, velocityX, velocityY);
}
}

很抱歉，如果代码太多，但我觉得我必须发布它，因为我没有哪个部分会有用...

Answer 1

这可能不是解决问题的最佳方法，但我找不到其他方法...... 我用这段代码“重制”了onFling（）方法：

private static float [] e1;
private static float start;


@Override
public boolean onTouchEvent(MotionEvent event) {
    boolean d = true;
    if (event.getActionMasked() == MotionEvent.ACTION_UP) {
        MotionEvent e2 = event;
        float velocityX = Math.abs((e1 [0] - e2.getX()) / start);
        float velocityY = Math.abs((e1 [0] - e2.getY()) / start);
        onFling(e1, event, velocityX, velocityY);
    } else if (event.getActionMasked() == MotionEvent.ACTION_DOWN) {
        e1 = new float[] {event.getX(), event.getY()};
        start = System.currentTimeMillis() / 1000;
    }
    Game.onTouchEvent(event);
    return true;
}

public static boolean onFling(float[] e1, MotionEvent e2, float velocityX, float velocityY) {
    return Game.onFling(e1, e2, velocityX, velocityY);
}

相关：MotionEvent changes from ACTION_UP to ACTION_DOWN

onFling未在自定义视图中调用

1 个答案: