prevent TabHost Tab切换？ [英] Prevent TabHost Tab Change?

问题描述

有没有办法与股票的Andr​​oid TabHost至prevent的发生？一个标签的变化

Is there any way with the stock Android TabHost to prevent a tab change from taking place ???

在iOS上，有一个名为shouldSelectViewController上tabBarController，这如果返回FALSE prevents从正在发生的改变标签的委托回调。

In iOS, there is a delegate callback called shouldSelectViewController on the tabBarController, which if you return FALSE prevents the tab change from taking place.

Android拥有onTabChanged（）的委托，但是这似乎是一个后 - 事实上通知的标签改变已经发生（它返回void）。

Android has an onTabChanged() delegate, but that appears to be an after-the-fact notification that the tab change has taken place (it returns void).

感谢。

推荐答案

如果你不希望使用onTabChanged（）对于这一点，你可以设置OnClickListener / OnTouchListener每个选项卡并执行它。例如：

If you don't want to use onTabChanged() for that, you can set OnClickListener/OnTouchListener for each tab and do it there. Example:

    for(int i=0;i<tabWidget.getTabCount();i++)
    {
        tabWidget.getChildAt(i).setOnTouchListener(new OnTouchListener(){

            @Override
            public boolean onTouch(View v, MotionEvent event) {
                int action = event.getAction();

                if(action == MotionEvent.ACTION_UP)
                {                       
                    String currentTabTag = (String)tabHost.getCurrentTabTag();
                    String clickedTabTag = (String)v.getTag();

                    if(clickedTabTag.equals("BAD TAG")
                    {
                        return true; // Prevents from clicking
                    }
                }
                return false;
            }               
        });
    }

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