Android學習筆記之Menu的ShowAsAction屬性的設定，showasaction

Android學習筆記之Menu的ShowAsAction屬性的設定，showasaction

（1）在res--menu目錄下的main.xml檔案

<menu xmlns:android="http://schemas.android.com/apk/res/android" >    <item        android:id="@+id/file"        android:orderInCategory="100"        android:showAsAction="always"        android:title="檔案(F)">        <menu>            <item                android:id="@+id/create"                android:title="建立">            </item>            <item                android:id="@+id/open"                android:title="開啟">            </item>        </menu>    </item>    <item        android:id="@+id/edit"        android:orderInCategory="100"        android:showAsAction="always"        android:title="編輯(E)">        <menu>            <item                android:id="@+id/create1"                android:title="建立">            </item>            <item                android:id="@+id/open1"                android:title="開啟">            </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="建立">            </item>            <item                android:id="@+id/open2"                android:title="開啟">            </item>        </menu>    </item></menu>

（2）類的檔案

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 {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}@Overridepublic 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;}@Overridepublic 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);}}