的ActivityGroup不处理返回键的ListActivity

问题描述

我使用的是的ActivityGroup产卵多种活动，并从同一选项卡中的TabActivity切换视图。

I am using an ActivityGroup to spawn multiple activities and switch views from within the same tab in a TabActivity.

当我preSS返回键调用此方法在我的ActivityGroup

When I press the back key this method is called inside my ActivityGroup

public void back() {  
        if(history.size() > 0) {  
            history.remove(history.size()-1);
            if (history.size() > 0)
             setContentView(history.get(history.size()-1)); 
            else
              initView();
        }else {  
            finish();  
        }  
    }  

这种方法可以让我保持一叠我的活动，并返回到previous之一，当返回键是pressed。

this method allows me to keep a stack of my activities and go back to the previous one when the back key is pressed.

这是运作良好，在我所有的嵌套的活动，除了在一个ListActivity，其中就回来键preSS将退出该应用程序。

this is working well on all my nested activities, except on a ListActivity where a press on the back key will simply exit the application.

推荐答案

我知道你的意思......我几个星期前面临的问题。我也知道这是一个恼人的错误，我已经吸取了教训：我不会用这种方法永远！所以，基本上，为了解决这个问题，你将不得不做一些变通方法，您的code。举例来说，我固定的问题，我的活动，加入该code到活动之一：

I know what you mean... I faced that problem some weeks ago. I also know it's an annoying bug and I've learned the lesson: I won't use that approach ever! So, basically, in order to fix this you will have to do some workarounds to your code. For instance, I fixed that problem with one of my activities adding this code to the activity:

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (event.getKeyCode() == KeyEvent.KEYCODE_BACK && StatsGroupActivity.self != null) {
        StatsGroupActivity.self.popView();
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

请注意，我的的ActivityGroup 叫 StatsGroupActivity ，看起来像：

public class StatsGroupActivity extends GroupActivity{

    /**
     * Self reference to this group activity
     */
    public static StatsGroupActivity self;

    public void onCreate(Bundle icicle){
        super.onCreate(icicle);
        self = this;
        // more stuff
    }
}

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