/**
     * 獲取已安裝應用資訊
     * @param includeSystemApps true:包含系統應用 false:不包含系統應用
     */
    @SuppressWarnings("static-access")
    private void getAppInfo(boolean includeSystemApps) {
        PackageManager pm = mActivity.getPackageManager();
        // 放到子執行緒中執行
        List<AppInfo> appInfos = new
 
 ArrayList<>();
        List<PackageInfo> packageInfos = mActivity.getPackageManager().getInstalledPackages(0);
        for (PackageInfo packageInfo : packageInfos) {
            /*if ((!includeSystemApps) && null == packageInfo.versionName) {
                continue;
            }*/
 

            //判斷是否為非系統預裝的應用  (大於0為系統預裝應用，小於等於0為非系統應用)
            if (!includeSystemApps) {
                if ((packageInfo.applicationInfo.flags & packageInfo.applicationInfo.FLAG_SYSTEM) > 0) {
                    continue;
                }
            }

            AppInfo appInfo = new AppInfo();
            // 獲得應用名
 

            appInfo.setName(pm.getApplicationLabel(packageInfo.applicationInfo).toString());
            // 獲得應用包名
            appInfo.setPackageName(packageInfo.packageName);                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
            appInfo.setIcon(packageInfo.applicationInfo.loadIcon(pm));
            appInfos.add(appInfo);
        }
    }