有关程序后台和前台运行监听

publicstatic boolean isBackground(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())) {

                /*

                BACKGROUND=400 EMPTY=500 FOREGROUND=100

                GONE=1000 PERCEPTIBLE=130 SERVICE=300 ISIBLE=200

                 */

                Log.i(context.getPackageName(),"此appimportace ="

                        + appProcess.importance

                        +",context.getClass().getName()="

                        + context.getClass().getName());

                if(appProcess.importance != RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {

                    Log.i(context.getPackageName(),"处于后台"

                            + appProcess.processName);

                    returntrue;

                }else{

                    Log.i(context.getPackageName(),"处于前台"

                            + appProcess.processName);

                    returnfalse;

                }

            }

        }

        returnfalse;

    }