第一种 利用反射,强制改变状态
protected void onCreate(Bundle savedInstanceState) {
...
getOverflowMenu();
}
//force to show overflow menu in actionbar for android 4.4 below
private void getOverflowMenu() {
try {
ViewConfiguration config = ViewConfiguration.get(this);
Field menuKeyField = ViewConfiguration.class.getDeclaredField("sHasPermanentMenuKey");
if(menuKeyField != null) {
menuKeyField.setAccessible(true);
menuKeyField.setBoolean(config, false);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
第二 改变主题
</style><!-- Application theme. -->
<style name="AppTheme" parent="AppBaseTheme">
<!-- All customizations that are NOT specific to a particular API-level can go here. -->
<item name="android:actionOverflowButtonStyle">@style/weixinActionOverflowButtonStyle</item>
</style>
<style name="weixinActionOverflowButtonStyle">
<item name="android:src">@drawable/ic_launcher</item>
</style>
</resources>