通過 XML 創建 Android 3.0 的操作欄(ActionBar)

先創建 /res/menu/menu.xml 定義操作欄(ActionBar).

<menu xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:id="@+id/itemid_0"
      android:title="Action Item 0"
      android:orderInCategory="0" />
  <item android:id="@+id/itemid_1"
      android:title="Action Item 1"
      android:orderInCategory="0" />
  <item android:id="@+id/itemid_2"
      android:title="Action Item 2"
      android:orderInCategory="0" />
  <item android:id="@+id/itemid_3"
      android:title="Action Item 3"
      android:orderInCategory="0" />
</menu>

在Java主代碼中重寫 onCreateOptionsMenu(Menu menu) 方法, 使用 getMenuInflater().inflate(R.menu.menu, menu) 實現操作欄(ActionBar).

package com.Android3ActionBar;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;

public class Android3ActionBarActivity extends Activity {
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
  }

 @Override
 public boolean onCreateOptionsMenu(Menu menu) {

  getMenuInflater().inflate(R.menu.menu, menu);
      return super.onCreateOptionsMenu(menu);
 }
}

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