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POpopulate spinner from string array
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  1. POpopulate spinner from string array
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    copied!<p>I'm pretty new to this, and I have a question that is probably pretty simple.</p> <p>I have 3 spinners, and I want to populate each spinner from an array based on the choice the user made on the previous spinners.</p> <p>Right now i have it set up to display a toast with the selected data, but I want to set up an activity to open up, but that's later. Right now I need to know how to populate the spinner from an array from the strings.xml.</p> <p>.Java</p> <pre><code>import java.util.ArrayList; import java.util.List; import android.os.Bundle; import android.app.Activity; import android.view.Menu; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.ArrayAdapter; import android.widget.Spinner; import android.widget.Toast; /** * @author madonk * */ public class Region extends Activity { Spinner sp1,sp2,sp3; ArrayAdapter&lt;String&gt; reg_adp,sw_city_adp,sw_lake_charles_adp; List&lt;String&gt; regions,sw_cities,sw_lake_charles; int pos; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_region); regions=new ArrayList&lt;String&gt;(); regions.add("Select a Region"); regions.add("Southwest"); sp1= (Spinner) findViewById(R.id.regions_spinner); sp2= (Spinner) findViewById(R.id.sw_city_spinner); sp3= (Spinner) findViewById(R.id.sw_lake_charles_spinner); reg_adp=new ArrayAdapter&lt;String&gt; (this,android.R.layout.simple_dropdown_item_1line,regions); reg_adp.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line); sp1.setAdapter(reg_adp); sp1.setOnItemSelectedListener(new OnItemSelectedListener() { public void onItemSelected(AdapterView&lt;?&gt; arg0, View arg1, int arg2, long arg3) { // TODO Auto-generated method stub pos=arg2; add(); } private void add() { // TODO Auto-generated method stub Toast.makeText(getBaseContext(), ""+pos, Toast.LENGTH_SHORT).show(); switch(pos) { case 0: sw_cities= new ArrayList&lt;String&gt;(); sw_cities.add("Select a City"); sw_city_adp=new ArrayAdapter&lt;String&gt;(Region.this, android.R.layout.simple_dropdown_item_1line,sw_cities); sw_city_adp.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line); sp2.setAdapter(sw_city_adp); select(); break; case 1: sw_cities= new ArrayList&lt;String&gt;(); sw_cities.add("Select a City"); sw_cities.add("Lake Charles"); sw_cities.add("Iowa"); sw_cities.add("Lake Arthur"); sw_city_adp=new ArrayAdapter&lt;String&gt;(Region.this, android.R.layout.simple_dropdown_item_1line,sw_cities); sw_city_adp.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line); sp2.setAdapter(sw_city_adp); select(); break; } } private void select() { // TODO Auto-generated method stub sp2.setOnItemSelectedListener(new OnItemSelectedListener() { public void onItemSelectedregions(AdapterView&lt;?&gt; arg0, View arg1, int arg2, long arg3) { // TODO Auto-generated method stub } public void onNothingSelected(AdapterView&lt;?&gt; arg0) { // TODO Auto-generated method stub } public void onItemSelected(AdapterView&lt;?&gt; arg0, View arg1, int arg2, long arg3) { // TODO Auto-generated method stub } public void onNothingSelectedregions(AdapterView&lt;?&gt; arg0) { // TODO Auto-generated method stub } }); } public void onNothingSelectedcities(AdapterView&lt;?&gt; arg0) { // TODO Auto-generated method stub } public void onNothingSelected(AdapterView&lt;?&gt; arg0) { // TODO Auto-generated method stub } }); } </code></pre> <p>stings.xml</p> <pre><code>&lt;resources&gt; &lt;string name="app_name"&gt;Louisiana Festivals&lt;/string&gt; &lt;string name="menu_settings"&gt;Settings&lt;/string&gt; &lt;string name="title_activity_region"&gt;Select a Region&lt;/string&gt; &lt;string-array name="regions_array"&gt; &lt;item &gt;Southwest&lt;/item&gt; &lt;/string-array&gt; &lt;string name="select_a_region"&gt;Select a Region&lt;/string&gt; &lt;string-array name="southwest_cities"&gt; &lt;item &gt;Lake Charles&lt;/item&gt; &lt;item &gt;Iowa&lt;/item&gt; &lt;/string-array&gt; &lt;string name="sw_select_a_city"&gt;Select a City&lt;/string&gt; &lt;string-array name="lake_charles"&gt; &lt;item&gt;Contraband days Pirate Festival&lt;/item&gt; &lt;item&gt;Other festival to be determined&lt;/item&gt; &lt;/string-array&gt; &lt;/resources&gt; </code></pre>
 

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