Android中ContextMenu用法实例
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：
<?xmlversion="1.0"encoding="utf-8"?> <LinearLayoutxmlns: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：
<?xmlversion="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：
packagecom.yyl;
importAndroid.app.ListActivity;
importAndroid.os.Bundle;
importAndroid.view.ContextMenu;
importAndroid.view.ContextMenu.ContextMenuInfo;
importAndroid.view.Menu;
importAndroid.view.MenuItem;
importAndroid.view.View;
importAndroid.widget.ArrayAdapter;
publicclassMenuDemoActivityextendsListActivity{
publicstaticfinalintEIGHT_ID=Menu.FIRST+1;
publicstaticfinalintSIXTEEN_ID=Menu.FIRST+2;
publicstaticfinalintTWENTY_FOUR_ID=Menu.FIRST+3;
publicstaticfinalintTWO_ID=Menu.FIRST+4;
publicstaticfinalintTHIRTY_TWO_ID=Menu.FIRST+5;
publicstaticfinalintFORTY_ID=Menu.FIRST+6;
publicstaticfinalintONE_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
publicvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
setListAdapter(newArrayAdapter(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
publicvoidonCreateContextMenu(ContextMenumenu,Viewv,
ContextMenuInfomenuInfo){
this.populateMenu(menu);
super.onCreateContextMenu(menu,v,menuInfo);
}
privatevoidpopulateMenu(Menumenu){
menu.add(Menu.NONE,ONE_ID,Menu.NONE,"1Pixel");
menu.add(Menu.NONE,TWO_ID,Menu.NONE,"2Pixels");
menu.add(Menu.NONE,EIGHT_ID,Menu.NONE,"8Pixels");
menu.add(Menu.NONE,SIXTEEN_ID,Menu.NONE,"16Pixels");
menu.add(Menu.NONE,TWENTY_FOUR_ID,Menu.NONE,"24Pixels");
menu.add(Menu.NONE,THIRTY_TWO_ID,Menu.NONE,"32Pixels");
menu.add(Menu.NONE,FORTY_ID,Menu.NONE,"40Pixels");
}
}
希望本文所述对大家的Android程序设计有所帮助。