我会尽量解释一个简单的应用场景：我的应用程序顺利，到主视图。在这个主视图我已经插入了一个的TextView 这显示了 preferenceManager 的方式建立的当前设置。为了简单起见，假设我有我的设置框。当我第一次开始我的应用程序 - 的的TextView 在我的主视图显示了我的复选框，设置正确（真）。现在我去设置菜单，它会弹出式，然后我将其更改为错误的。我回到主视图，看到没有变化。它仍然说是真的，即使我把它改成错误的。如果我最终的应用程序，然后重新启动 - 一切都很好，这显示了我的变化

I will try to explain a simple app scenario: My app goes right to a 'main view'. In this main view I have inserted a TextView which displays current settings created by way of the PreferenceManager. For simplicity sake, let's say I have a checkbox in my settings. When I first start my app - the TextView on my main view shows my checkbox setting correctly (true). Now I go to the settings menu, it pops-up, and then I change it to false. I go back to the main view and see no change. It still say's true even after I changed it to false. If I end the app and then re-start it - all is well and it shows my change.

显然，主视图只是停留在后台，而我改变设置？我如何重绘或更新主视图后，我更改设置？

Apparently the main view just stays in the background while I'm changing settings? How can I redraw or update the main view after I change settings?

推荐答案

当你进入你的preferences您当前的活动应该暂停，当你回去（见的