<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

</menu>

Se invece, aggiungessimo:

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

<item android:title="Item" />
</menu>

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

<item android:title="Aggiorna"

/>
</menu>

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

<item android:title="Aggiorna"
android:id="@+id/aggiorna"

/>
</menu>

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

<item android:title="Aggiorna"
android:id="@+id/aggiorna"
android:orderInCategory="100"

/>
</menu>

icona creata. Quindi?

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">

<item android:title="Aggiorna"
android:id="@+id/aggiorna"
android:orderInCategory="100"
app:showAsAction="ifRoom"
android:icon="@drawable/aggiorna"

/>
</menu>

E’ bene ora creare altre icone.

Notiamo solo che nel realizzare l’Action Bar, la prima icona di sistema, che abbiamo inserito nel realizzare appunto, l’Action Bar, si vede poco bene. Questo è un cattivo funzionamento da parte del Material Design.

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">

<item android:title="Aggiorna"
android:id="@+id/aggiorna"
android:orderInCategory="100"
app:showAsAction="ifRoom"
android:icon="@drawable/aggiorna"

/>

<item android:title="miaFunz"
android:id="@+id/miaFunz"
android:orderInCategory="100"
app:showAsAction="ifRoom"
android:icon="@drawable/icona_miabo"

/>

</menu>

Se inserissimo anche la terza funzione ?

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">

<item android:title="Aggiorna"
android:id="@+id/aggiorna"
android:orderInCategory="100"
app:showAsAction="ifRoom"
android:icon="@drawable/aggiorna"

/>
<item android:title="miaFunz"
android:id="@+id/miaFunz"
android:orderInCategory="100"
app:showAsAction="ifRoom"
android:icon="@drawable/icona_miabo"

/>
<item android:title="funzGiacchio"
android:id="@+id/ghiacciof"
android:orderInCategory="100"
app:showAsAction="ifRoom"
android:icon="@drawable/icona_nuova"

/>
</menu>

Se dovessimo inserire una Terza Funzione, ovvero icona di Sistema, allora, ci apparirà Action Overflow

E’ apparsa ovviamente l’Action Overflow

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">

<item android:title="Aggiorna"
android:id="@+id/aggiorna"
android:orderInCategory="100"
app:showAsAction="ifRoom"
android:icon="@drawable/aggiorna"
/>
<item android:title="bluetooth"
android:id="@+id/bluetooth"
android:orderInCategory="100"
app:showAsAction="ifRoom"
android:icon="@drawable/icona_k"
/>
<item android:title="miaFunz"
android:id="@+id/miaFunz"
android:orderInCategory="100"
app:showAsAction="ifRoom"
android:icon="@drawable/icona_miabo"
/>
<item android:title="funzGiacchio"
android:id="@+id/ghiacciof"
android:orderInCategory="100"
app:showAsAction="ifRoom"
android:icon="@drawable/icona_nuova"
/>
</menu>