android - 如何实现绘画更新循环？

Question

我想在 android 中为 Canvas 上的游戏动画创建一个绘制和更新循环，但我遇到了麻烦，因为我似乎无法让线程正常工作。它似乎几乎立即崩溃。这是我尝试过的:

    // Create the thread supplying it with the runnable object
    Thread thread = new Thread(runnable);

    // Start the thread in oncreate()
    thread.start();


    class runner implements Runnable {
    // This method is called when the thread runs
    long wait = 1000;

    public void run() {

    update();
    }

    public void update()
    {
        try{
          Thread.currentThread();
            //do what you want to do before sleeping
          Thread.sleep(wait);//sleep for 1000 ms
          //do what you want to do after sleeping
        }
        catch(InterruptedException ie){
        //If this thread was interrupted by another thread 
        }

        run();
    }
}

此外，当我降低等待时间时，它崩溃得更快。

有没有更合适的方法来解决这个问题？

改成这样:

class runner implements Runnable {
// This method is called when the thread runs
long wait = 10;
boolean blocked = false;

public void run() {

    if(!blocked){
        blocked = true;
        paint();
    }
}


public void paint()
{

    update();
}


public void update()
{
    try{
      Thread.currentThread();
        //do what you want to do before sleeping
      Thread.sleep(wait);//sleep for 1000 ms
      //do what you want to do after sleeping
    }
    catch(InterruptedException ie){
    //If this thread was interrupted by another thread 
    }

    paint();
}

这会导致相同的错误...:/

Answer 1

我注意到的第一件事是运行调用更新和更新调用运行。这将导致 NO PUN INTENDED Stack Overflow。他们互相调用，直到堆栈填满。然后它应该崩溃。