Android determines whether the current app is in the foreground or backstage _android

This example for you to share the Android to determine the current app state of the specific implementation code for your reference, the specific contents are as follows

First type:

 /**
  * To determine whether the current application is in the foreground or background
  * * @param context * @return/public

 Static Boolean Isapplicationbroughttobackground (Final context) {
  Activitymanager am = (activitymanager) Context.getsystemservice (context.activity_service);
  list<runningtaskinfo> tasks = am.getrunningtasks (1);
  if (!tasks.isempty ()) {
   ComponentName topactivity = tasks.get (0). topactivity;
   if (!topactivity.getpackagename (). Equals (Context.getpackagename ()) {return
    true;
   }
  }
  return false;
 }

The above code requires a permission:

< uses-permission android:name= "Android.permission.GET_TASKS"/>

The second type:

The following code is my latest discovery, without permission, to be duly completed:

However, I did a little adjustment, backstage is divided into: service backstage and activity backstage, this is not considered the front desk are considered backstage.
service running in the background, appprocess.importance = Importance_service,
• No service running backstage,

public static Boolean IsBackground (context context) {


  Activitymanager Activitymanager = (Activitymanager) Context.getsystemservice (context.activity_service);
  list<activitymanager.runningappprocessinfo> appprocesses = activitymanager.getrunningappprocesses ();
  for (Activitymanager.runningappprocessinfo appprocess:appprocesses) {
   if (appProcess.processName.equals) ( Context.getpackagename ()) {
    if (appprocess.importance = = ActivityManager.RunningAppProcessInfo.IMPORTANCE_ foreground) {
     System.out.print (String.Format ("Foreground App:", Appprocess.processname));
     return false;
    } else{
     System.out.print ("Background App:" +appprocess.processname);
     return true;
    }
   }
  return false;
 }

The above is the entire content of this article, I hope to help you learn, but also hope that we support the cloud habitat community.