在Android中使用自己的线程从另一个类创建一个对话框[重复]

时间：2021-02-14 16:00:13

This question already has an answer here:

这个问题在这里已有答案:

I'm making a very little game in a "GameView" with a "GameThread" inside it. It extends from View so I use this constructor:

我在“GameView”中制作了一个非常小的游戏,里面有一个“GameThread”。它从View扩展,所以我使用这个构造函数:

GameView(Context context, AttributeSet attrs){
//initialization stuff
}

and I add it on the main_activity.xml because its controlled by buttons. The problem is that I want to make that when the game is over, it shows a Dialog with the score. But I don't know how to do this. I 've tried creating a reference to the context with a class attribute like this:

我将它添加到main_activity.xml上,因为它由按钮控制。问题是我希望在游戏结束时制作它,它会显示带有分数的Dialog。但我不知道该怎么做。我尝试使用类属性创建对上下文的引用:

GameView(Context context, AttributeSet attrs){
this.context = context;
}

But i can't call "runOnUIThread" with this.

但是我不能用这个叫“runOnUIThread”。

1 个解决方案

#1

You can use a UI thread's handler instead. Get an instance using your context and post your Runnable

您可以使用UI线程的处理程序。使用您的上下文获取实例并发布您的Runnable

 Handler handler = new Handler(Looper.getMainLooper());
            Runnable myRunnable = new Runnable() {
                @Override
                public void run() {
                    //Do something in your UI thread
                }
            };
            handler.post(myRunnable);

#1

You can use a UI thread's handler instead. Get an instance using your context and post your Runnable

您可以使用UI线程的处理程序。使用您的上下文获取实例并发布您的Runnable

 Handler handler = new Handler(Looper.getMainLooper());
            Runnable myRunnable = new Runnable() {
                @Override
                public void run() {
                    //Do something in your UI thread
                }
            };
            handler.post(myRunnable);
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