从 Android TabHost 中的选项卡活动更新选项卡 [英] Update tabs from a tab's activity in a Android TabHost

问题描述

我有一个 TabActivity 并且将有 3 或 4 个标签.

I have a TabActivity and am going to have 3 or 4 tabs.

在 TabA 中，我想要一个 ExpandableListView，它将列出产品.我希望 TabC 充当一种购物车"，可能带有自己的 ListView.

In TabA, I would like to have an ExpandableListView, which will list products. I would like TabC to act as a sort of "shopping cart", probably with a ListView of itself.

有没有办法从 Activity 与 TabHost 交互?我希望能够单击 TabA 内的按钮并更新它并切换到 TabC.这可能吗?我可以让 Tab 的活动调用其父方法吗?

Is there a way to interact with the TabHost from the Activity? I would like to be able to click a button inside of TabA and have it update and switch to TabC. Is this possible? Can I get the Tab's activities call its parents methods?

推荐答案

如果您将选项卡实现为视图，而不是单独的活动，这将更简单，运行速度更快，占用内存更少，并且是更好的解决方案恕我直言.

If you implement your tabs as views, rather than individual activities, this would be far simpler, run faster, take up less memory, and be a better solution IMHO.

话虽如此，在 Tab A Activity 中，调用 getParent() 以获取 TabActivity.然后，你可以使用disretrospect所指出的方法.

That being said, in the Tab A Activity, call getParent() to get at the TabActivity. Then, you can use the methods pointed out by disretrospect.

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