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        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) {
            // 隐藏应用图标
            packageManager.setComponentEnabledSetting(componentName, PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
                    PackageManager.DONT_KILL_APP);
        } else {
            // 显示应用图标
            packageManager.setComponentEnabledSetting(componentName, PackageManager.COMPONENT_ENABLED_STATE_DEFAULT,
                    PackageManager.DONT_KILL_APP);
        }