简介:按下menu键时,弹出此菜单,也是最常见的菜单
简介:桌面系统中有右键,可移动不行啊,所以就有了长按事件,以代替右键菜单
简介:顾明思意,就是弹出式菜单了,便于交互
布局如下:
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>
应用如下:
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 }