Android(安卓)进入后台触发的事件,一般用于APP屏幕解锁
16lz
2021-01-25
啰嗦个鸟啊,直接上代码
BaseActivity,所有类的父类
UnLockViewActivity,屏幕解锁类,但是这个类不继承
BaseActivity
在
BaseActivity覆写onStop方法
@Overrideprotected void onStop() {// TODO Auto-generated method stubsuper.onStop();if (!isAppOnForeground()) {// app 进入后台// 全局变量isActive = false 记录当前已经进入后台if (StaticFunction.isSystemHavePassword(BaseActivity.this)) {Intent intent = new Intent(BaseActivity.this,UnLockViewActivity.class);startActivity(intent);}}}/** * 程序是否在前台运行 * * @return */public boolean isAppOnForeground() {// Returns a list of application processes that are running on the// deviceActivityManager activityManager = (ActivityManager) getApplicationContext().getSystemService(Context.ACTIVITY_SERVICE);String packageName = getApplicationContext().getPackageName();List appProcesses = activityManager.getRunningAppProcesses();if (appProcesses == null)return false;for (RunningAppProcessInfo appProcess : appProcesses) {// The name of the process that this object is associated with.if (appProcess.processName.equals(packageName)&& appProcess.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {return true;}}return false;}
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