Android - 菜单

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <menu xmlns:android="http://schemas.android.com/apk/res/android"  >
 3         <item
 4             android:id="@+id/menu_1_1"
 5             android:icon="@drawable/ic_launcher"
 6             android:title="一号" android:visible="true">
 7         </item>
 8         <item
 9             android:id="@+id/menu_1_2"
10             android:icon="@drawable/ic_launcher"
11             android:title="二号">
12             <menu>
13                 <item
14                     android:id="@+id/menu_2_1"
15                     android:icon="@drawable/ic_launcher"
16                     android:title="二号一号">
17                      <menu>
18                         <item
19                             android:id="@+id/menu_2_2_1"
20                             android:icon="@drawable/ic_launcher"
21                             android:title="一号">
22                         </item>
23                         <item
24                             android:id="@+id/menu_2_2_2"
25                             android:title="二号">
26                         </item>
27                         <item
28                             android:id="@+id/menu_2_2_3"
29                             android:title="三号">
30                         </item>
31                     </menu>
32                 </item>
33                 <item
34                     android:id="@+id/menu_2_2"
35                     android:title="二号">
36                 </item>
37                 <item
38                     android:id="@+id/menu_2_3"
39                     android:title="三号">
40                 </item>
41             </menu>
42         </item>
43         <item
44             android:id="@+id/menu_1_3"
45             android:icon="@drawable/ic_launcher"
46             android:title="三号">
47         </item>
48        
49 </menu>

  1 package lilonghe.example.menudemo;
  2 
  3 import java.io.Console;
  4 import java.lang.reflect.Array;
  5 import java.lang.reflect.Method;
  6 import java.util.ArrayList;
  7 import java.util.List;
  8 
  9 import android.R.array;
 10 import android.app.Activity;
 11 import android.location.Address;
 12 import android.os.Bundle;
 13 import android.util.Log;
 14 import android.view.ContextMenu;
 15 import android.view.Menu;
 16 import android.view.MenuItem;
 17 import android.view.SubMenu;
 18 import android.view.View;
 19 import android.view.ContextMenu.ContextMenuInfo;
 20 import android.widget.ArrayAdapter;
 21 import android.widget.ListView;
 22 import android.widget.PopupMenu;
 23 
 24 public class MainActivity extends Activity {
 25 
 26     private ListView listView;
 27     @Override
 28     protected void onCreate(Bundle savedInstanceState) {
 29         super.onCreate(savedInstanceState);
 30         setContentView(R.layout.activity_main);
 31         listView = (ListView)findViewById(R.id.listView1);
 32         String[] arrayStrings = new String[]{"一号","二号"};
 33         ArrayAdapter adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1,arrayStrings);
 34         listView.setAdapter(adapter);
 35         // 注册“上下文菜单”
 36         registerForContextMenu(listView);
 37     }
 38     
 39     public void showPopuMenu(View v) {
 40         
 41         PopupMenu pmMenu = new PopupMenu(this, v);
 42         pmMenu.getMenuInflater().inflate(R.menu.main_menu, pmMenu.getMenu());
 43         setIconEnable(pmMenu.getMenu(),true);
 44         pmMenu.show();
 45     }
 46     
 47     /**
 48      * 创建上下文菜单
 49      */
 50     @Override
 51     public void onCreateContextMenu(ContextMenu menu, View v,
 52             ContextMenuInfo menuInfo) {
 53         // TODO Auto-generated method stub
 54         super.onCreateContextMenu(menu, v, menuInfo);
 55         setIconEnable(menu,true);
 56         getMenuInflater().inflate(R.menu.main_menu, menu);
 57         menu.setHeaderTitle("this is title");
 58         
 59     }
 60     /**
 61      * 上下文菜单选中
 62      */
 63     @Override
 64     public boolean onContextItemSelected(MenuItem item) {
 65         // 同OptionMenu
 66         return super.onContextItemSelected(item);
 67     }
 68     /**
 69      * 创建选项菜单
 70      */
 71     @Override
 72     public boolean onCreateOptionsMenu(Menu menu) {
 73         setIconEnable(menu, true);
 74         // 第一种：布局文件
 75         //getMenuInflater().inflate(R.menu.main_menu, menu);
 76         // 第二种：动态创建
 77         menu.add(1, 1, 1, "首页");
 78         menu.getItem(0).setIcon(R.drawable.ic_launcher);
 79         menu.add(1, 2, 1, "二页");
 80         menu.getItem(1).setIcon(R.drawable.ic_launcher);
 81         menu.add(1, 3, 1, "三页");
 82         menu.getItem(2).setIcon(R.drawable.ic_launcher);
 83         //二级菜单
 84         SubMenu subMenu = menu.addSubMenu("设置性别");
 85         subMenu.setIcon(R.drawable.ic_launcher);
 86         subMenu.add(2,5,2,"女");
 87         SubMenu s_2 = subMenu.addSubMenu("男");
 88         s_2.setHeaderTitle("真是男的？");
 89         s_2.add(1, 6, 1, "真的是的");
 90         s_2.add(1,7,1,"不告诉你");    
 91         return true;
 92     }
 93     /***
 94      * 此方法解决Android4.0以上不显示图标问题
 95      * @param menu
 96      * @param b
 97      */
 98     private void setIconEnable(Menu menu, boolean b) {
 99         try 
100         {
101             Class<?> clazz = Class.forName("com.android.internal.view.menu.MenuBuilder");
102             Method m = clazz.getDeclaredMethod("setOptionalIconsVisible", boolean.class);
103             m.setAccessible(true);
104         
105             //MenuBuilder实现Menu接口，创建菜单时，传进来的menu其实就是MenuBuilder对象(java的多态特征)
106             m.invoke(menu, true);    
107         } catch (Exception e){
108             e.printStackTrace();
109         }
110     }
111     /**
112      * 选项菜单选中
113      */
114     @Override
115     public boolean onOptionsItemSelected(MenuItem item) {
116         // TODO Auto-generated method stub
117         Log.i("ItemId", item.getItemId()+"");
118         Log.i("ItemTitle", item.getTitle().toString());
119         switch(item.getItemId()){
120             case R.id.menu_1_1:
121                 Log.i("switch", "1_1");
122             break;
123             case R.id.menu_1_2:
124                 Log.i("switch", "1_2");
125             break;
126             case R.id.menu_1_3:
127                 Log.i("switch", "1_3");
128             break;
129         }
130         //获取ID: item.getItemId();
131         //获取标题：item.getTitle();
132         return true;
133     }
134 }