How to update the application launcher after enabling / disabling the activity alias?

Question

I made an application with this manifest

 <application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.Activity"
        android:label="@string/app_name" >
    </activity>

    <activity-alias
        android:name="com.example.AliasIcon"
        android:enabled="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:targetActivity="com.example.Activity"
        android:theme="@style/AppTheme" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity-alias>
</application>

since the application does not require a launcher, I would like to display the application once and allow the user to select, save or hide the icon

In the code I wrote

showIcon = hideIcon.isChecked();
    componentIcon = new ComponentName(getPackageName(), "com.example.AliasIcon");

    if (showIcon){
        flagIcon = PackageManager.COMPONENT_ENABLED_STATE_DISABLED;
    }else{
        flagIcon = PackageManager.COMPONENT_ENABLED_STATE_ENABLED;
    }


    getPackageManager().setComponentEnabledSetting(componentIcon, flagIcon, PackageManager.DONT_KILL_APP);
    hideIcon.setOnCheckedChangeListener(this);

showIcon is logical, hideIcon is CheckBox, componentIcon is ComponentName, flag Icon is int.

when I run the application (emulator on api8) everything works, but the icon does not disappear. If I click, a toast appears that says "the application is not installed." For it to disappear, I have to restart the emulator.

Is there a way to “update” the application launcher? Perhaps using android.intent.action.PACKAGE_CHANGED