Android 顯示/隱藏 應用圖標

        PackageManager packageManager = getPackageManager();
        ComponentName componentName = new ComponentName(this, StartActivity.class);
        int res = packageManager.getComponentEnabledSetting(componentName);
        if (res == PackageManager.COMPONENT_ENABLED_STATE_DEFAULT
                || res == PackageManager.COMPONENT_ENABLED_STATE_ENABLED) {
            // 隱藏應用圖標
            packageManager.setComponentEnabledSetting(componentName, PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
                    PackageManager.DONT_KILL_APP);
        } else {
            // 顯示應用圖標
            packageManager.setComponentEnabledSetting(componentName, PackageManager.COMPONENT_ENABLED_STATE_DEFAULT,
                    PackageManager.DONT_KILL_APP);
        }