Android中的Menu

Android中的设置按钮：长按或点击菜单键

1.长按选项：

布局文件：

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
     android:paddingBottom="@dimen/activity_vertical_margin"
     android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"
     android:paddingTop="@dimen/activity_vertical_margin"
     tools:context=".MenuActivity" >
 
     <TextView
         android:id="@+id/menutext1"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:text="第一种方法创建菜单"
         android:textSize="20sp" />
 
     <TextView
         android:id="@+id/menutext2"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:text="第二种方法创建菜单"
         android:textSize="20sp" />
 
     <ListView
         android:id="@+id/menulist"
         android:layout_width="fill_parent"
         android:layout_height="fill_parent"
         android:layout_marginTop="50dp" >
     </ListView>
 
 </LinearLayout>

实现过程：

 private ListView list;
     private TextView lv;
 
     String[] str = { "TextView", "EditView", "Toast(消息框)" };
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_menu);
 
         list = (ListView) findViewById(R.id.menulist);
         ArrayAdapter<String> arr = new ArrayAdapter<String>(this,
                 android.R.layout.simple_list_item_1, str);
         list.setAdapter(arr);
 
         list.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {
 
             @Override
             public void onCreateContextMenu(ContextMenu menu, View v,
                     ContextMenuInfo menuInfo) {
                 menu.clear();
                 menu.clearHeader();
                 menu.setHeaderIcon((R.drawable.ic_launcher));
                 menu.setHeaderTitle("我是ListView");
                 menu.add(3, 6, 0, "删除");
                 menu.add(3, 7, 1, "修改");
             }
         });
         // 第一种方法
         TextView tv = (TextView) findViewById(R.id.menutext1);
         this.registerForContextMenu(tv);
         // 第二种方法
         lv = (TextView) findViewById(R.id.menutext2);
         lv.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {
 
             @Override
             public void onCreateContextMenu(ContextMenu menu, View v,
                     ContextMenuInfo menuInfo) {
                 menu.setHeaderTitle("长度-ContextMenu");
                 menu.add(0, 1, 0, "复制");
                 SubMenu sb = menu.addSubMenu("查找");
                 sb.add(1, 2, 0, "按id查找");
                 sb.add(1, 3, 0, "按名称查找");
             }
         });
     }

2.长按菜单项：

 private ListView list;
     private TextView lv;
 
     String[] str = { "TextView", "EditView", "Toast(消息框)" };
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_menu);
 
         list = (ListView) findViewById(R.id.menulist);
         ArrayAdapter<String> arr = new ArrayAdapter<String>(this,
                 android.R.layout.simple_list_item_1, str);
         list.setAdapter(arr);
 
         list.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {
 
             @Override
             public void onCreateContextMenu(ContextMenu menu, View v,
                     ContextMenuInfo menuInfo) {
                 menu.clear();
                 menu.clearHeader();
                 menu.setHeaderIcon((R.drawable.ic_launcher));
                 menu.setHeaderTitle("我是ListView");
                 menu.add(3, 6, 0, "删除");
                 menu.add(3, 7, 1, "修改");
             }
         });
         // 第一种方法
         TextView tv = (TextView) findViewById(R.id.menutext1);
         this.registerForContextMenu(tv);
         // 第二种方法
         lv = (TextView) findViewById(R.id.menutext2);
         lv.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {
 
             @Override
             public void onCreateContextMenu(ContextMenu menu, View v,
                     ContextMenuInfo menuInfo) {
                 menu.setHeaderTitle("长度-ContextMenu");
                 menu.add(0, 1, 0, "复制");
                 SubMenu sb = menu.addSubMenu("查找");
                 sb.add(1, 2, 0, "按id查找");
                 sb.add(1, 3, 0, "按名称查找");
             }
         });
     }

Over