检测到将要运行的android应用程序

本文介绍了检测到将要运行的android应用程序的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

当我的应用程序进入后台"/变为非活动状态"时，我需要关闭蓝牙.

I need to turn off Bluetooth when my app "goes to background"/"becomes inactive".

我尝试在MainActivity的onPause()中执行此操作，但由于现在BT消失(Mainactivity的onPause()被触发)，所以即使我启动了一个显示所选项目的实体详细信息的新活动，该操作也无法正常工作来自Mainactivity.

I tried to do it in onPause() of my MainActivity but that doesn't work since now BT goes off (onPause() of the Mainactivity is fired) even when I start a new activity showing an entity detail of chosen item from the Mainactivity.

我需要的是App的某种"onPause()"，而不是一个活动.

What I need is some kind of "onPause()" of my App not of a single activity.

我认为不存在这样的问题，所以有什么更好的解决办法吗?

I think nothing like this exists so is there any preferable solution?

推荐答案

将此依赖项拉到build.gradle文件中:

Pull this dependency in your build.gradle file:

dependencies { implementation "android.arch.lifecycle:extensions:1.1.1" }

然后在您的Application类中，使用此:

Then in your Application class, use this:

public class MyApplication extends Application implements LifecycleObserver { @Override public void onCreate() { super.onCreate(); ProcessLifecycleOwner.get().getLifecycle().addObserver(this); } @OnLifecycleEvent(Lifecycle.Event.ON_STOP) private void onAppBackgrounded() { Log.d("MyApp", "App in background"); } @OnLifecycleEvent(Lifecycle.Event.ON_START) private void onAppForegrounded() { Log.d("MyApp", "App in foreground"); } }

更新您的AndroidManifest.xml文件:

Update your AndroidManifest.xml file:

<application android:name=".MyApplication" ....> </application>