"go" Android: Control spinner Implementation Drop-down list

<span id="Label3"></p><p><p>Original Url: http://www.cnblogs.com/tinyphp/p/3858920.html</p></p><p><p>In Web development, HTML provides a drop-down list implementation that uses the <select> element to implement a drop-down list in which each Drop-down list item uses the <option> Representation. This is an essential interactive component in Web development, and the corresponding implementation in Android is Spinner.</p></p><p><p><strong>Method One:</strong></p></p><p><p>Static display of Spinner options in Resource mode:</p></p><pre><pre><spinner android:layout_width= "match_parent" android:layout_height= "wrap_content" android:id= "@ +id/spinner2 " android:entries=" @array/spingarr " /></pre></pre><p><p>Data files:</p></p><span class="cnblogs_code_copy"><span class="cnblogs_code_copy"></span></span><pre><pre><?xml version= "1.0" encoding= "utf-8"?><resources> <string-array name= "spingarr" > < Item> Beijing </item> <item> Shanghai </item> <item> Guangzhou </item> <item> Shenzhen </item> </string-array></resources></pre></pre><span class="cnblogs_code_copy"><span class="cnblogs_code_copy"></span></span><p><p></p></p><p><p><strong>Usage 2:</strong></p></p><p><p>Dynamically display the Spinner option in code mode to add data to Spinner with the adapter</p></p><span class="cnblogs_code_copy"><span class="cnblogs_code_copy"></span></span><pre>Package Com.example.testspanner;import Java.util.arraylist;import Java.util.list;import android.app.Activity; Import Android.os.bundle;import Android.widget.arrayadapter;import Android.widget.spinner;public class MainActivity Extends Activity {private Spinner spinner;private list<string> data_list;private arrayadapter<string> arr_ Adapter @Override protected void onCreate (Bundle Savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (r.layout.spinner); Spinner = (spinner) Findviewbyid (r.id.spinner); Data data_list = new arraylist<string> (); Data_list.add ("beijing"); Data_list.add ("shanghai"); Data_list.add ("guangzhou"); Data_list.add ("shenzhen"); Adapter arr_adapter= new Arrayadapter<string> (this, android. r.layout.simple_spinner_item, data_list); Set Style Arr_adapter.setdropdownviewresource (android. r.layout.simple_spinner_dropdown_item); Load Adapter Spinner. Setadapter (arr_adapter); }}</pre><span class="cnblogs_code_copy"><span class="cnblogs_code_copy"></span></span><p><p>Layout file Added:</p></p><pre><pre><spinner android:layout_width= "match_parent" android:layout_height= "wrap_content" android:id= "@ +id/spinner " /></pre></pre><p><p>"go" Android: Control spinner Implementation Drop-down list</p></p></span>