本篇是對安卓選單使用程式設計方式實現,當然可以使用XML的方式完成同樣的功能,基本Java和C#寫法都是一致的,所以使用XML的方式在本篇中使用Java演示,需要注意的是,對於如果不是VS開發的話,那麼資原始檔名稱必須以小寫開頭,否則會報錯。
執行效果
C#實現
using Android.App; using Android.OS; using Android.Views; using Android.Widget; namespace MenuDemo { [Activity(Label = "@string/ApplicationName", MainLauncher = true, Icon = "@drawable/Icon")] public class MainActivity : Activity { protected override void OnCreate(Bundle bundle) { base.OnCreate(bundle); SetContentView(Resource.Layout.Main); var iv = FindViewById<ImageView>(Resource.Id.iv); iv.SetImageResource(Resource.Drawable.test); RegisterForContextMenu(iv); } //與一個活動關聯 public override bool OnCreateOptionsMenu(IMenu menu) { base.OnCreateOptionsMenu(menu); const int menuItemId = Menu.First; const int menuItemOrder = Menu.None; const int munuItemText = Resource.String.menuItem1; /* * 第一個引數:組值 * 第二個引數:選單唯一標示 * 第三個引數:順序引數 * 第四個引數:文字 */ menu.Add(1, menuItemId, menuItemOrder, munuItemText); menu.Add(2, menuItemId + 10, menuItemOrder + 1, "選單2"); menu.Add(2, menuItemId + 20, menuItemOrder + 2, "選單3" ); var subMenu = menu.AddSubMenu(0, menuItemId + 30, menuItemOrder + 3, "子選單" ); subMenu.SetHeaderIcon(Resource.Drawable.more); var subMenuItem1 = subMenu.Add(0, menuItemId + 40, menuItemOrder + 4,"子選單-1" ); subMenuItem1.SetIcon(Resource.Drawable.more); var subMenuItem2 = subMenu.Add(0, menuItemId + 50, menuItemOrder + 5,"子選單-2" ).SetCheckable(true); subMenuItem2.SetIcon(Resource.Drawable.blue); subMenu.Add(0, menuItemId + 60, menuItemOrder + 6, "子選單-3" ).SetCheckable(true); return true; } public override bool OnOptionsItemSelected(IMenuItem item) { Toast.MakeText(this, "當前選單編號" + item.ItemId, ToastLength.Long).Show(); return base.OnOptionsItemSelected(item); } public override void OnCreateContextMenu(IContextMenu menu, View v, IContextMenuContextMenuInfo menuInfo) { base.OnCreateContextMenu(menu, v, menuInfo); menu.SetHeaderTitle("上下文選單"); menu.SetHeaderIcon(Resource.Drawable.blue); menu.Add(0, Menu.First, Menu.None, "選單1"); menu.Add(0, Menu.First+1,Menu.None, "選單2").SetShortcut('2','B'); menu.Add(0, Menu.First + 2, Menu.None, "選單3"); var subMenu = menu.AddSubMenu("子選單"); subMenu.Add("子選單選項"); } } }
Layout
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:minWidth="25px" android:minHeight="25px"> <ImageView android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/iv" /> </LinearLayout>
執行效果
Java實現
package com.example.halower.menudemo; import android.app.Activity; import android.os.Bundle; import android.view.ContextMenu; import android.view.MenuInflater; import android.view.View; import android.widget.ImageView; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ImageView iv=(ImageView)findViewById(R.id.iamgeView); iv.setImageResource(R.drawable.test); registerForContextMenu(iv); } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) { super.onCreateContextMenu(menu, v, menuInfo); MenuInflater inflater=new MenuInflater(this); inflater.inflate(R.menu.menu_main,menu); menu.setHeaderIcon(R.drawable.blue); menu.setHeaderTitle(R.string.menuTitle); } }
<?xml version="1.0" encoding="utf-8"?> <resources> <string name="app_name">MenuDemo</string> <string name="action_settings">Settings</string> <string name="item1Name" >選單1</string> <string name="item2Name" >選單2</string> <string name="item3Name" >選單3--More</string> <string name="item4Name" >選單4</string> <string name="menuTitle">XML中解析選單</string> <string name="subitem1Name">子選單1</string> <string name="subitem2Name">子選單2</string> </resources>