检测手机应用(系统应用，手动安装的应用，当前正在运行应用)

public void checkRunApp(Context mContext){
        ActivityManager mActivityManager = (ActivityManager) mContext.getSystemService(mContext.ACTIVITY_SERVICE);
        PackageManager mPackageManager = mContext.getPackageManager();
            List<PackageInfo> packageList = mPackageManager.getInstalledPackages(0);
            List<PackageInfo> systemApps = new ArrayList<PackageInfo>();
            List<PackageInfo> selfApps = new ArrayList<PackageInfo>();
            for (int i = 0; i < packageList.size(); i++) {
                PackageInfo pak = packageList.get(i);
                if ((pak.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) <= 0) {
                    // 添加手动安装的应用程序
                    selfApps.add(pak);
                } else {
                    // 系统 自带
                    systemApps.add(pak);
            }
        }
        // 获取当前正在运行的任务
        RunningTaskInfo info = mActivityManager.getRunningTasks(1).get(0);
        //获取前台程序的包名
        toppackAgeName = info.topActivity.getPackageName();
    }


    /**
         * 通过包名获取应用程序的信息。
         * @param packageName 包名。
         * @return 返回包名所对应的应用程序的信息。
         */
        public String getProgramInfoByPackageName(String packageName) {
            PackageManager pm = mContext.getPackageManager();
            String appName = null;
            try {
                ApplicationInfo appInfo = pm.getApplicationInfo(packageName,PackageManager.GET_META_DATA);
                appName = pm.getApplicationLabel(appInfo).toString();//应用名称
            } catch (NameNotFoundException e) {
                e.printStackTrace();
            }
            return appName;
        }