Android编程判断当前应用是否在后台运行的方法示例

/** 判断程序是否在后台运行 */public static boolean isRunBackground(Context context) {  ActivityManager activityManager = (ActivityManager) context      .getSystemService(Context.ACTIVITY_SERVICE);  List<RunningAppProcessInfo> appProcesses = activityManager      .getRunningAppProcesses();  for (RunningAppProcessInfo appProcess : appProcesses) {    if (appProcess.processName.equals(context.getPackageName())) {      if (appProcess.importance == RunningAppProcessInfo.IMPORTANCE_BACKGROUND) {        // 表明程序在后台运行        return true;      } else {        return false;      }    }  }  return false;}/** 判断程序是否在前台运行（当前运行的程序） */public boolean isRunForeground() {  ActivityManager activityManager = (ActivityManager) getApplicationContext()      .getSystemService(Context.ACTIVITY_SERVICE);  String packageName = getApplicationContext().getPackageName();  List<RunningAppProcessInfo> appProcesses = activityManager      .getRunningAppProcesses();  if (appProcesses == null)    return false;  for (RunningAppProcessInfo appProcess : appProcesses) {    if (appProcess.processName.equals(packageName)        && appProcess.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {      return true;// 程序运行在前台    }  }  return false;}