Android-Menu [implemented using C # And Java],

Android-Menu [implemented using C # And Java],

This article uses programming for Android menus. Of course, you can use XML to perform the same functions. Basically, Java and C # are the same, therefore, if you use XML for Java demonstration in this article, note that if it is not developed by VS, the resource file name must start with lowercase; otherwise, an error is reported.

Running Effect

C # implementation

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);} // associate with an activity 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;/** first parameter: group value * second parameter: menu uniquely identified * third parameter: sequence Parameter * Fourth parameter: Text */menu. add (1, menuItemId, menuItemOrder, munuItemText); menu. add (2, menuItemId + 10, menuItemOrder + 1, "menu 2"); menu. add (2, menuItemId + 20, menuItemOrder + 2, "menu 3"); var subMenu = menu. addSubMenu (0, menuItemId + 30, menuItemOrder + 3, "sub menu"); subMenu. setHeaderIcon (Resource. drawable. more); var subMenuItem1 = subMenu. add (0, menuItemId + 40, menuItemOrder + 4, "sub-menu-1"); subMenuItem1.SetIcon (Resource. drawable. more); var subMenuItem2 = subMenu. add (0, menuItemId + 50, menuItemOrder + 5, "sub-menu-2 "). setCheckable (true); subMenuItem2.SetIcon (Resource. drawable. blue); subMenu. add (0, menuItemId + 60, menuItemOrder + 6, "sub menu-3 "). setCheckable (true); return true;} public override bool OnOptionsItemSelected (IMenuItem item) {Toast. makeText (this, "current menu number" + 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 ("context menu"); menu. setHeaderIcon (Resource. drawable. blue); menu. add (0, Menu. first, Menu. none, "menu 1"); menu. add (0, Menu. first + 1, Menu. none, "menu 2 "). setShortcut ('2', 'B'); menu. add (0, Menu. first + 2, Menu. none, "menu 3"); var subMenu = menu. addSubMenu ("sub menu"); subMenu. add ("sub-menu options ");}}}

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>

Running Effect

Java Implementation

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"> menu 1 </string> <string name = "item2Name"> menu 2 </string> <string name = "item3Name"> menu 3 -- More </string> <string name = "item4Name"> menu 4 </string> <string name = "menuTitle"> resolution menu in XML </string> <string name = "subitem1Name"> sub-menu 1 </string> <string name = "subitem2Name"> sub-Menu 2 </string> </resources>