Android中ContextMenu用法实例
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2023-11-08 14:35:40
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：
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：
<?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：
<?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：
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。