Android Self-study note the Spinner drop-down box features, use

Spinner:
is a control similar to a drop-down list from which the user chooses the appropriate option!
The data in the spinner needs to be populated with a adapter (adapter).

Use:

layout file Activity_main.xml:

<span style= "FONT-FAMILY:KAITI_GB2312;FONT-SIZE:18PX;" ><spinner        android:id= "@+id/spinner"        android:layout_width= "match_parent"        android:layout_ height= "Wrap_content"        ></Spinner>    <textview        android:id= "@+id/textview"        android: Layout_width= "Match_parent"        android:layout_height= "wrap_content"        /></span>

class file Mainactivity.java:

<span style= "FONT-FAMILY:KAITI_GB2312;FONT-SIZE:18PX;" >package Com.example.administrator.spinner1;import Android.support.v7.app.actionbaractivity;import Android.os.bundle;import Android.view.menu;import Android.view.menuitem;import Android.view.View;import Android.widget.adapterview;import Android.widget.arrayadapter;import Android.widget.spinner;import Android.widget.textview;import Java.util.arraylist;import Java.util.list;public class MainActivity extends    actionbaractivity {private Spinner Spinner;    Private TextView TextView;        @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);        Setcontentview (R.layout.activity_main);        Spinner = (spinner) Findviewbyid (R.id.spinner);        TextView = (TextView) Findviewbyid (R.id.textview);  Spinner.setprompt ("Please select three people:");        The drop-down box starts to prompt for the final list list = new ArrayList ();        Final List List1 = new ArrayList ();     Final List list2 = new ArrayList ();   List.add ("Zhao Yun");        List.add ("Zhuge Liang");        List.add ("Guan Yu");        List.add ("bu");        List1.add ("character Zilong");        List1.add ("The word Ming");        List1.add ("Word cloud length");        List1.add ("word first");        List2.add ("Armed forces: all-in-all intelligence: [+] Endurance: 80");        List2.add ("Force: ten \ n: 20");        List2.add ("Armed forces: the strength of the intellect: the Endurance: 80");        List2.add ("Armed Forces: the Intelligence: the Endurance: 70"); Arrayadapter adpter = new Arrayadapter (this, Android.        R.layout.simple_spinner_item,list);        Spinner.setadapter (Adpter); Spinner.setonitemselectedlistener (New Adapterview.onitemselectedlistener () {@Override public void O                Nitemselected (adapterview<?> Parent, view view, int position, long ID) {                Textview.settext ("Selected:" +list.get (position) + ": \ T" +list1.get (position));            Textview.append ("\ n personal information: \ n" +list2.get (position)); } @Override public void OnnothingselectEd (adapterview<?> parent) {}}); }}</span>

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Android Self-study note the Spinner drop-down box features, use