Android学习笔记之Menu的ShowAsAction属性的设置
(1)在res--menu目录下的main.xml文件
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:id="@+id/file"
android:orderInCategory="100"
android:showAsAction="always"
android:title="文件(F)">
<menu>
<item
android:id="@+id/create"
android:title="新建">
</item>
<item
android:id="@+id/open"
android:title="打开">
</item>
</menu>
</item>
<item
android:id="@+id/edit"
android:orderInCategory="100"
android:showAsAction="always"
android:title="编辑(E)">
<menu>
<item
android:id="@+id/create1"
android:title="新建">
</item>
<item
android:id="@+id/open1"
android:title="打开">
</item>
</menu>
</item>
<item
android:id="@+id/format"
android:orderInCategory="100"
android:showAsAction="always"
android:title="格式(O)">
<menu>
<item
android:id="@+id/create2"
android:title="新建">
</item>
<item
android:id="@+id/open2"
android:title="打开">
</item>
</menu>
</item>
</menu>
(2)类的文件
package com.example.menu_showasaction;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onMenuItemSelected(int featureId, MenuItem item) {
switch (item.getItemId()) {
case R.id.create:
Toast.makeText(MainActivity.this, "create...", Toast.LENGTH_SHORT);
break;
default:
break;
}
return super.onMenuItemSelected(featureId, item);
}
}