如何在操作栏中的溢出菜单中向项目添加图标

Question

Part of the code in my menu.xml is:

<item
  android:id="@+id/action_settings"
  android:orderInCategory="100"
  android:title="@string/action_settings"
  android:icon="@drawable/icon"
  app:showAsAction="never"/>`

However, the icons don't show in the app. What is my mistake?

Answer 1

I guess this might solve you problem, try it out..

In onPrepare callback of menu after menu creation, you just do this for all the menu items, before returning it back again

    menu.clear();
    MenuInflater inflater = this.getMenuInflater();
    inflater.inflate(R.menu.'your_menu_resource', menu);
    int length = menu.size();

    for(int i = 0; i < length ; i++){
        MenuItem item  = menu.getItem(i);
        item.setIcon('your_resource_identifier')
    }

    return super.onPrepareOptionsMenu(menu);

Answer 2

In your menu xml, use the following syntax to nest menu, you will start getting the menu with icons

<item
    android:id="@+id/empty"
    android:icon="@drawable/ic_action_overflow"
    android:orderInCategory="101"
    android:showAsAction="always">
    <menu>
        <item
            android:id="@+id/action_show_ir_list"
            android:icon="@drawable/ic_menu_friendslist"
            android:showAsAction="always|withText"
            android:title="List"/>
    </menu>
</item>

Answer 3

If you want icon you need to change the value of ShowAsAction="never" to ShowAsAction="always"

Try the next code.

<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.example.MainActivity" >

<item
    android:id="@+id/menu_item_options"
    android:icon="@drawable/ic_config"
    android:title="@string/action_settings"
    app:showAsAction="ifRoom">
    <menu>
        <item
            android:id="@+id/action_settings"
            android:icon="@drawable/ic_config"
            android:orderInCategory="100"
            android:title="@string/action_settings"
            app:showAsAction="always"/>
        <item
            android:id="@+id/action_close"
            android:orderInCategory="100"
            android:title="@string/action_close"
            app:showAsAction="ifRoom"/>
    </menu>
</item>