我使用的是viewpager选项卡+刷卡，我想在动作条每个片段设置不同的标题，这样，当我切换，标题的变化。

I am using a viewpager "tabs + swipe" and I would like to set different titles in the actionBar for each fragment so that when I switch, title changes.

我试了几件事情没有成功，只有最后一个标题显示...并不会再改变，当我转...

I tried several things without success, only the last title displays... and does not change anymore when I switch...

推荐答案

首先，让你的活动实施OnPageChangeListener.

First, make your activity implement an OnPageChangeListener.

然后，当你创建你的 ViewPager ，你可以使用mViewPager.setOnPageChangeListener(this)让你的活动将接收回调时，页面的变化。

Then, when you create your ViewPager, you can use mViewPager.setOnPageChangeListener(this) so that your activity will receive callbacks when the page changes.

最后，你需要实现 OnPageChangeListener 回调。你的 onPageSelected（）方法应该是这样的：

Finally, you need to implement the OnPageChangeListener callbacks. Your onPageSelected() method should be something like this:

@Override
public abstract void onPageSelected(int position) {
    setTitle(getTitleFromPosition(position));
}

另外两个回调可以是空的。

The other two callbacks can be empty.