概念
案例
1、布局文件
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dp"
android:layout_marginTop="12dp"
android:src="@drawable/message" />
</LinearLayout>
img_add.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dp"
android:layout_marginTop="12dp"
android:src="@drawable/message" />
</LinearLayout>
img_message.xml和img_add.xml一样的布局
2、菜单资源文件
menu.xml
<?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:id="@+id/search"
android:title="搜索"
app:actionViewClass="android.widget.SearchView"
app:showAsAction="always"></item>
<item android:id="@+id/img1"
android:title="通讯录"
app:actionLayout="@layout/img_message"
app:showAsAction="always"/>
<item android:id="@+id/img2"
android:title="添加"
app:actionLayout="@layout/img_add"
app:showAsAction="always"/>
</menu>
关键app:actionViewClass="android.widget.SearchView"
3、MainActivity.Java中加载菜单资源文件
//解析菜单资源文件
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu,menu);
return super.onCreateOptionsMenu(menu);
}
效果: