您好，所以我创建了一个清单，我想补充的行动吧。我很新至Android所以我想知道如何同时使用ListActivity添加操作栏。任何帮助将AP preciated。谢谢 我的code：

 公共类MainActivity扩展ListActivity {

     ArrayList的＆LT;项目＆GT;项目=新的ArrayList＆LT;项目＆GT;（）;

    @覆盖
    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;


        items.add（新SectionItem（2×2矩阵））;
        items.add（新EntryItem（添加2矩阵））;
        items.add（新EntryItem（减去2矩阵））;
        items.add（新EntryItem（2乘以矩阵））;
        items.add（新EntryItem（乘以一个常数））;
        items.add（新EntryItem（2分割矩阵））;
        items.add（新EntryItem（负一个矩阵））;
        items.add（新EntryItem（一个矩阵求逆））;
        items.add（新EntryItem（行列式矩阵））;

        / * 2节* /
        items.add（新SectionItem（3×3矩阵））;
        items.add（新EntryItem（项目4））;
        items.add（新EntryItem（项目5））;
        items.add（新EntryItem（项目6））;
        items.add（新EntryItem（以7））;
        / * Section3中* /
        items.add（新SectionItem（类型3））;
        items.add（新EntryItem（项目8））;
        items.add（新EntryItem（项目9））;
        items.add（新EntryItem（项目10））;
        items.add（新EntryItem（项目11））;
        items.add（新EntryItem（项目12））;

        EntryAdapter适配器=新EntryAdapter（这一点，项目）;

        setListAdapter（适配器）;
    }

}
 

解决方案

然后在您的活动的onCreateOptionsMenu（）方法，膨胀菜单资源到给定的菜单到每个项目添加到动作栏：

  @覆盖
公共布尔onCreateOptionsMenu（功能菜单）{
    //充气操作栏中使用的菜单项
    MenuInflater充气= getMenuInflater（）;
    inflater.inflate（R.menu.main_activity_actions，菜单）;
    返回super.onCreateOptionsMenu（菜单）;
}
 

为

更多信息行动起来吧

Hello so I created a list and I want to add action bar. I am quite new to android so I would like to know how to add action bar while using ListActivity. Any help will be appreciated. Thanks My code:

     public class MainActivity extends ListActivity {

     ArrayList<Item> items = new ArrayList<Item>();

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);


        items.add(new SectionItem("2x2 Matrices"));
        items.add(new EntryItem("Adding 2 Matrices"));
        items.add(new EntryItem("Subtracting 2 Matrices"));
        items.add(new EntryItem("Multiplying 2 Matrices"));
        items.add(new EntryItem("Multiplying by a constant"));
        items.add(new EntryItem("Dividing 2 Matrices"));
        items.add(new EntryItem("Negative of a Matrix"));
        items.add(new EntryItem("Inverse of a Matrix"));
        items.add(new EntryItem("Determinant of a Matrix"));

        /*Section2*/
        items.add(new SectionItem("3x3 Matrices"));
        items.add(new EntryItem("Item 4"));
        items.add(new EntryItem("Item 5"));
        items.add(new EntryItem("Item 6"));
        items.add(new EntryItem("Item 7"));
        /*Section3*/
        items.add(new SectionItem("Category 3"));
        items.add(new EntryItem("Item 8"));
        items.add(new EntryItem("Item 9"));
        items.add(new EntryItem("Item 10"));
        items.add(new EntryItem("Item 11"));
        items.add(new EntryItem("Item 12"));

        EntryAdapter adapter = new EntryAdapter(this, items);

        setListAdapter(adapter);
    }

}

Then in your activity's onCreateOptionsMenu() method, inflate the menu resource into the given Menu to add each item to the action bar:

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu items for use in the action bar
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.main_activity_actions, menu);
    return super.onCreateOptionsMenu(menu);
}

More info for action bar