问题描述
当使用 ViewPager 和片段时，我们的 onPause、onResume 方法在标签之间移动时不会被调用.当我们变得可见或被隐藏时，有什么方法可以在片段中找出?
When using ViewPager with fragments, our onPause, onResume methods are not called when moving between tabs. Is there any way we can figure out in the fragment when we're being made visible or being hidden?
不幸的是，我在 onResume、onPause 中有逻辑，例如向位置服务注册，在切换标签时永远不会停止，因为 onPause 永远不会调用直到退出整个应用程序.
Unfortunately I have logic in onResume, onPause, like registering with location services, that never get stopped when switching tabs because onPause never gets called until one exits the whole app.
推荐答案
ViewPager 自带 OnPageChangeListener 接口.通过为之前和当前显示的页面设置一些标志，您可以模拟这种行为.
The ViewPager comes with the OnPageChangeListener interface. By setting some flags for the previous and currently shown pages, you can emulate this behavior.
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