本文实例讲述了Android中ContextMenu用法。分享给大家供大家参考。具体如下：
main.xml文件如下：
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<?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" ><ListView Android:id="@android:id/list" Android:layout_width="fill_parent" Android:layout_height="fill_parent"></ListView></LinearLayout> |
simple_list_item_1.xml文件如下：
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<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:Android="http://schemas.android.com/apk/res/android" Android:layout_width="wrap_content" Android:layout_height="wrap_content" Android:orientation="vertical"> <TextView Android:id="@+id/label" Android:layout_width="fill_parent" Android:layout_height="wrap_content" Android:textSize="30sp"></TextView></LinearLayout> |
MenuDemoActivity.java如下：
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package com.yyl;import Android.app.ListActivity;import Android.os.Bundle;import Android.view.ContextMenu;import Android.view.ContextMenu.ContextMenuInfo;import Android.view.Menu;import Android.view.MenuItem;import Android.view.View;import Android.widget.ArrayAdapter;public class MenuDemoActivity extends ListActivity { public static final int EIGHT_ID = Menu.FIRST+1; public static final int SIXTEEN_ID = Menu.FIRST+2; public static final int TWENTY_FOUR_ID = Menu.FIRST+3; public static final int TWO_ID = Menu.FIRST+4; public static final int THIRTY_TWO_ID = Menu.FIRST+5; public static final int FORTY_ID = Menu.FIRST+6; public static final int ONE_ID = Menu.FIRST+7; String[] items={"lorem", "ipsum", "dolor", "sit", "amet", "consectetuer", "adipiscing", "elit", "morbi", "vel", "ligula", "vitae", "arcu", "aliquet", "mollis", "etiam", "vel", "erat", "placerat", "ante", "porttitor", "sodales", "pellentesque", "augue", "purus"}; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); setListAdapter(new ArrayAdapter(this,R.layout.simple_list_item_1,R.id.label,items)); //注册ContextView到view中 registerForContextMenu(getListView()); } //重写该方法，生成ContextMenu菜单 @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { this.populateMenu(menu); super.onCreateContextMenu(menu, v, menuInfo); } private void populateMenu(Menu menu) { menu.add(Menu.NONE, ONE_ID, Menu.NONE, "1 Pixel"); menu.add(Menu.NONE, TWO_ID, Menu.NONE, "2 Pixels"); menu.add(Menu.NONE, EIGHT_ID, Menu.NONE, "8 Pixels"); menu.add(Menu.NONE, SIXTEEN_ID, Menu.NONE, "16 Pixels"); menu.add(Menu.NONE, TWENTY_FOUR_ID, Menu.NONE, "24 Pixels"); menu.add(Menu.NONE, THIRTY_TWO_ID, Menu.NONE, "32 Pixels"); menu.add(Menu.NONE, FORTY_ID, Menu.NONE, "40 Pixels"); }} |
希望本文所述对大家的Android程序设计有所帮助。
