Android判断当前应用程序处于前台还是后台的两种方法
本文导语: 1、通过RunningTaskInfo类判断(需要额外权限): 代码如下:/** *判断当前应用程序处于前台还是后台 */ public static boolean isApplicationBroughtToBackground(final Context context) { ActivityManager am = (ActivityManager) context.ge...
1、通过RunningTaskInfo类判断(需要额外权限):
/**
*判断当前应用程序处于前台还是后台
*/
public static boolean isApplicationBroughtToBackground(final Context context) {
ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List tasks = am.getRunningTasks(1);
if (!tasks.isEmpty()) {
ComponentName topActivity = tasks.get(0).topActivity;
if (!topActivity.getPackageName().equals(context.getPackageName())) {
return true;
}
}
return false;
}
需要在AndroidMenitfest.xml文件中添加以下权限
2、通过RunningAppProcessInfo类判断(不需要额外权限):
public static boolean isBackground(Context context) {
ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List appProcesses = activityManager.getRunningAppProcesses();
for (RunningAppProcessInfo appProcess : appProcesses) {
if (appProcess.processName.equals(context.getPackageName())) {
if (appProcess.importance == RunningAppProcessInfo.IMPORTANCE_BACKGROUND) {
Log.i("后台", appProcess.processName);
return true;
}else{
Log.i("前台", appProcess.processName);
return false;
}
}
}
return false;
}