Android创建菜单栏（android布局实现）

<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.example.Menudemo1.MainActivity" >

<item
android:id="@+id/action_settings"
android:orderInCategory="100"
android:showAsAction="never"
android:title="设置">
</item>
<item
android:id="@+id/action_about"
android:orderInCategory="101"
android:showAsAction="never"
android:title="关于">
</item>
<item
android:id="@+id/action_add"
android:orderInCategory="102"
android:showAsAction="never"
android:title="增加">
</item>
<item
android:id="@+id/action_save"
android:orderInCategory="103"
android:showAsAction="never"
android:title="保存">
</item>

</menu>

package com.example.Menudemo1;

import android.app.Activity;
import android.os.Bundle;
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 onOptionsItemSelected(MenuItem item) {

Toast.makeText(getApplicationContext(), item.getTitle(), Toast.LENGTH_SHORT).show();

return super.onOptionsItemSelected(item);
}
}