"Android" Spinner Use
Last Update:2015-09-28
Source: Internet
Author: User
<span id="Label3"></p><p><p>Spinner: Drop-down list, mainly used to display some options for users to choose, similar to the ComboBox inside the PC Application.</p></p><p><p>The following conditions are required to use Spinner:</p></p><p><p>1. A Spinner control</p></p><p><p>2. data</p></p><p><p>3. A Adapter</p></p><p><p>First create a spinner control</p></p><pre><span style="color: #0000ff;"><span style="color: #0000ff;"><</span></span><span style="color: #800000;"><span style="color: #800000;">LinearLayout</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">xmlns:android</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "http://schemas.android.com/apk/res/android"</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">Xmlns:tools</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "http://schemas.android.com/tools"</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">Android:layout_width</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "match_parent"</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">Android:layout_height</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "match_parent"</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"><</span></span><span style="color: #800000;"><span style="color: #800000;">Spinner</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">Android:id</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "@+id/spinner001"</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">Android:layout_width</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "match_parent"</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">Android:layout_height</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "wrap_content"</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">/></span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"></</span></span><span style="color: #800000;"><span style="color: #800000;">LinearLayout</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span></pre><p><p>Then create an array in Strings.xml and add the test Data:</p></p><pre><span style="color: #0000ff;"><span style="color: #0000ff;"><?</span></span><span style="color: #ff00ff;"><span style="color: #ff00ff;">XML version= "1.0" encoding= "utf-8"</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">?></span></span><span style="color: #0000ff;"><span style="color: #0000ff;"><</span></span><span style="color: #800000;"><span style="color: #800000;">Resources</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"><</span></span><span style="color: #800000;"><span style="color: #800000;">String-array</span></span><span style="color: #ff0000;"><span style="color: #ff0000;">name</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">= "spinner_array"</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"><</span></span><span style="color: #800000;"><span style="color: #800000;">Item</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span>Monday<span style="color: #0000ff;"><span style="color: #0000ff;"></</span></span><span style="color: #800000;"><span style="color: #800000;">Item</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"><</span></span><span style="color: #800000;"><span style="color: #800000;">Item</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span>Tuesday<span style="color: #0000ff;"><span style="color: #0000ff;"></</span></span><span style="color: #800000;"><span style="color: #800000;">Item</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"><</span></span><span style="color: #800000;"><span style="color: #800000;">Item</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span>Wednesday<span style="color: #0000ff;"><span style="color: #0000ff;"></</span></span><span style="color: #800000;"><span style="color: #800000;">Item</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"><</span></span><span style="color: #800000;"><span style="color: #800000;">Item</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span>Thursday<span style="color: #0000ff;"><span style="color: #0000ff;"></</span></span><span style="color: #800000;"><span style="color: #800000;">Item</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"><</span></span><span style="color: #800000;"><span style="color: #800000;">Item</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span>Friday<span style="color: #0000ff;"><span style="color: #0000ff;"></</span></span><span style="color: #800000;"><span style="color: #800000;">Item</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"><</span></span><span style="color: #800000;"><span style="color: #800000;">Item</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span>Saturday<span style="color: #0000ff;"><span style="color: #0000ff;"></</span></span><span style="color: #800000;"><span style="color: #800000;">Item</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"><</span></span><span style="color: #800000;"><span style="color: #800000;">Item</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span>Sunday<span style="color: #0000ff;"><span style="color: #0000ff;"></</span></span><span style="color: #800000;"><span style="color: #800000;">Item</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"></</span></span><span style="color: #800000;"><span style="color: #800000;">String-array</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span> <span style="color: #0000ff;"><span style="color: #0000ff;"></</span></span><span style="color: #800000;"><span style="color: #800000;">Resources</span></span><span style="color: #0000ff;"><span style="color: #0000ff;">></span></span></pre><p><p>finally, in Java code, get the Spinner control we created,</p></p><pre><pre><span style="color: #0000ff;">Private</span> Spinner spinner=<span style="color: #0000ff;">null</span><span style="color: #000000;">; Spinner</span>=<span style="color: #000000;">(Spinner) Findviewbyid (r.id.spinner001); Arrayadapter Adapter</span>=arrayadapter.createfromresource (<span style="color: #0000ff;"></span>this<span style="color: #000000;">, r.array.spinner_array, r.layout.support_simple_spinner_dropdown_item); Spinner.setadapter (adapter); </span></pre></pre><p><p></p></p><p><p> "Android" Spinner Use </p> </p></span>
