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