android判断当前应用在前台还是后台

最新推荐文章于 2024-08-09 02:24:14 发布

原创最新推荐文章于 2024-08-09 02:24:14 发布 · 437 阅读

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本文介绍了一段代码，用于检测安卓应用是否在前台运行。通过PowerManager和ActivityManager来判断设备屏幕是否开启及应用进程的重要性级别。

        //true forground
	private boolean isBackground(){		
		PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);
			if(!powerManager.isScreenOn()){
				LogUtil.print("power app is running background:"+getPackageName());	
				return false;
			}
		
		ActivityManager am =(ActivityManager)(getSystemService(ACTIVITY_SERVICE )) ;
	 	PackageManager pm = getPackageManager();
		List<RunningAppProcessInfo> runningAppProcesses = am.getRunningAppProcesses();		
		for(RunningAppProcessInfo info:runningAppProcesses){			
			 if (info.processName.equals(getPackageName())) {
				 //ConstUtil.getInstance().show("importance="+info.importance); 
	                if (info.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
	                          return true;
	                }else{	                         
	                          return false;
	                }
	           }
		}
		return false;	
	}