android 通过 包名启动Activity及intent.addCategory(Intent.CATEGORY_LAUNCHER);遗留问题

最近因为项目需要，不让app在应用列表显示，只能用自己的启动器启动。

private void RunApp(String packageName) {

        PackageInfo pi;

        try {

            pi = getPackageManager().getPackageInfo(packageName, 0);

            Intent resolveIntent = new Intent(Intent.ACTION_MAIN, null);

            // resolveIntent.addCategory(Intent.CATEGORY_LAUNCHER);

            resolveIntent.setPackage(pi.packageName);

            PackageManager pManager = getPackageManager();

            List<ResolveInfo> apps = pManager.queryIntentActivities(

                    resolveIntent, 0);

            ResolveInfo ri = apps.iterator().next();

            if (ri != null) {

                packageName = ri.activityInfo.packageName;

                String className = ri.activityInfo.name;

                Intent intent = new Intent(Intent.ACTION_MAIN);

                // intent.addCategory(Intent.CATEGORY_LAUNCHER);

                ComponentName cn = new ComponentName(packageName, className);

                intent.setComponent(cn);

                startActivity(intent);

            }

        } catch (NameNotFoundException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

    }

问题是：当intent.addCategory(Intent.CATEGORY_LAUNCHER);注释去除时，部分应用点击后会导致程序异常退出。更确切的说是找不到apps。初步判断是因为这些应用没有在Intent-filter中设置<category android:name="android.intent.category.LAUNCHER" />。这些应用是无法在桌面列表图标中显示的。所以，如果加上intent.addCategory(Intent.CATEGORY_LAUNCHER);因为这些应用没有这一属性，所以导致点击失败（即无法获取到对应的apps）。