title: android get value for the spinner choose by user
body: <p>i am developing an android application. here is what i want.</p>
  
  <p>there is gender spinner;male and female. when the user choose male, it will appear image1, but when choose female, the image1 disappear. i am thinking of using set.alpha(0).</p>
  
  <p>here is my code.</p>
  
  <pre><code>public class Froyo2Activity extends Activity {
      Spinner genderSpin;
      ImageView image1;
      Button submit;
  
      @Override
      public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_froyo2);
  
          addButtonListener();
      }
  
      public void addButtonListener(){
          submit = (Button)findViewById(R.id.submit);
          image1 = (ImageView)findViewById(R.id.imageView1);
          genderSpin = (Spinner)findViewById(R.id.gender_spin);
  
          submit.setOnClickListener(new OnClickListener(){            
              @Override
              public void onClick(View arg0) {                
                  if(genderSpin.getSelectedItemPosition() == 1){
                      image1.setAlpha(0);
                  }
              }
          });     
      }
  }
  </code></pre>
  
  <p>this is my code froyo2.xml in res/layout</p>
  
  <pre><code>&lt;ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
      android:id="@+id/widget54"
      android:layout_width="wrap_content"
      android:layout_height="fill_parent" &gt;
  
  &lt;RelativeLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="wrap_content"
      android:layout_height="819dp"
      tools:context=".RelativeActivity" &gt;
  
      &lt;TextView
          android:id="@+id/textView1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_alignParentTop="true"
          android:text="Welcome"
          android:textAppearance="?android:attr/textAppearanceSmall" /&gt;
  
      &lt;LinearLayout
          android:id="@+id/linearLayout1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/textView1" &gt;
  
          &lt;TextView
              android:id="@+id/textView2"
              android:layout_width="131dp"
              android:layout_height="wrap_content"
              android:text="Priority Level"
              android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;/LinearLayout&gt;
  
      &lt;LinearLayout
          android:id="@+id/linearLayout2"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignTop="@+id/linearLayout1"
          android:layout_toRightOf="@+id/linearLayout1" &gt;
  
          &lt;Spinner
              android:id="@+id/prior_spin"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:entries="@array/priorArray"
              android:prompt="@string/prior_prompt" /&gt;
  
      &lt;/LinearLayout&gt;
  
      &lt;LinearLayout
          android:id="@+id/linearLayout3"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignTop="@+id/linearLayout2"
          android:layout_toRightOf="@+id/linearLayout2" &gt;
  
      &lt;/LinearLayout&gt;
  
      &lt;EditText
          android:id="@+id/editText2"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignLeft="@+id/linearLayout2"
          android:layout_alignParentRight="true"
          android:layout_below="@+id/editText1"
          android:ems="10" &gt;
  
          &lt;requestFocus /&gt;
      &lt;/EditText&gt;
  
      &lt;TextView
          android:id="@+id/textView6"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignBaseline="@+id/button1"
          android:layout_alignBottom="@+id/button1"
          android:layout_alignParentLeft="true"
          android:text="Age"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;Button
          android:id="@+id/button2"
          style="?android:attr/buttonStyleSmall"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignLeft="@+id/button1"
          android:layout_alignRight="@+id/button1"
          android:layout_below="@+id/button1"
          android:text="5.1" /&gt;
  
      &lt;Button
          android:id="@+id/button3"
          style="?android:attr/buttonStyleSmall"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignLeft="@+id/button2"
          android:layout_alignRight="@+id/button2"
          android:layout_below="@+id/button2"
          android:text="Select ETA" /&gt;
  
      &lt;TextView
          android:id="@+id/textView7"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/button1"
          android:text="BP/P"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;TextView
          android:id="@+id/textView8"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignBaseline="@+id/button3"
          android:layout_alignBottom="@+id/button3"
          android:layout_alignLeft="@+id/textView9"
          android:text="ETA"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;TextView
          android:id="@+id/textView9"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/button3"
          android:layout_marginTop="15dp"
          android:text="Location"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;Button
          android:id="@+id/submit"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentBottom="true"
          android:layout_alignParentLeft="true"
          android:layout_alignRight="@+id/editText6"
          android:text="Submit 5.1" /&gt;
  
      &lt;EditText
          android:id="@+id/editText3"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignLeft="@+id/button3"
          android:layout_alignParentRight="true"
          android:layout_below="@+id/button3"
          android:ems="10"
          android:inputType="textPostalAddress" /&gt;
  
      &lt;EditText
          android:id="@+id/editText4"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignLeft="@+id/editText3"
          android:layout_alignParentRight="true"
          android:layout_below="@+id/editText3"
          android:ems="10" /&gt;
  
      &lt;TextView
          android:id="@+id/textView10"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignLeft="@+id/textView5"
          android:layout_alignTop="@+id/editText4"
          android:layout_toLeftOf="@+id/editText4"
          android:text="Special Handling"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;TextView
          android:id="@+id/textView11"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignLeft="@+id/textView10"
          android:layout_below="@+id/editText4"
          android:layout_marginTop="15dp"
          android:text="Drug"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;EditText
          android:id="@+id/editText5"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentRight="true"
          android:layout_below="@+id/editText4"
          android:layout_toRightOf="@+id/textView10"
          android:ems="10" /&gt;
  
      &lt;TextView
          android:id="@+id/textView4"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/linearLayout2"
          android:text="Firstname"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;EditText
          android:id="@+id/editText1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignLeft="@+id/linearLayout2"
          android:layout_alignParentRight="true"
          android:layout_alignTop="@+id/textView4"
          android:ems="10" /&gt;
  
      &lt;TextView
          android:id="@+id/textView5"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignBaseline="@+id/editText2"
          android:layout_alignBottom="@+id/editText2"
          android:layout_alignRight="@+id/textView4"
          android:text="Lastname"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;Button
          android:id="@+id/button1"
          style="?android:attr/buttonStyleSmall"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignLeft="@+id/editText2"
          android:layout_alignParentRight="true"
          android:layout_below="@+id/editText2"
          android:text="OriFroyoAge" /&gt;
  
      &lt;EditText
          android:id="@+id/editText6"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignLeft="@+id/editText5"
          android:layout_alignParentRight="true"
          android:layout_below="@+id/editText5"
          android:ems="10" /&gt;
  
      &lt;TextView
          android:id="@+id/textView12"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignBaseline="@+id/editText6"
          android:layout_alignBottom="@+id/editText6"
          android:layout_alignParentLeft="true"
          android:text="Diagnostic"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;ImageView
          android:id="@+id/imageView2"
          android:layout_width="wrap_content"
          android:layout_height="300dp"
          android:layout_alignParentRight="true"
          android:layout_alignTop="@+id/imageView1"
          android:layout_toRightOf="@+id/imageView1"
          android:src="@drawable/back2" /&gt;
  
      &lt;ImageView
          android:id="@+id/imageView1"
          android:layout_width="wrap_content"
          android:layout_height="300dp"
          android:layout_below="@+id/editText6"
          android:layout_toRightOf="@+id/textView10"
          android:src="@drawable/malefull" /&gt;
  
      &lt;TextView
          android:id="@+id/textView13"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_alignTop="@+id/imageView1"
          android:layout_marginTop="124dp"
          android:text="Injury(s)"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;TextView
          android:id="@+id/textView3"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_below="@+id/textView1"
          android:layout_toRightOf="@+id/linearLayout2"
          android:layout_weight="1"
          android:text="Gender"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;Spinner
          android:id="@+id/gender_spin"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentRight="true"
          android:layout_alignTop="@+id/textView3"
          android:entries="@array/genderArray"
          android:prompt="@string/gender_prompt" /&gt;
  
  &lt;/RelativeLayout&gt;
  &lt;/ScrollView&gt;
  </code></pre>
  
  <p>and this one is in res/layout-land</p>
  
  <pre><code>&lt;ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/widget54"
  android:layout_width="wrap_content"
  android:layout_height="fill_parent" &gt;
  
  &lt;RelativeLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="798dp"
      android:layout_height="wrap_content"
      tools:context=".RelativeActivity" &gt;
  
      &lt;TextView
          android:id="@+id/textView1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_alignParentTop="true"
          android:text="Welcome"
          android:textAppearance="?android:attr/textAppearanceSmall" /&gt;
  
      &lt;TextView
          android:id="@+id/textView2"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/textView1"
          android:text="Priority Level"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;Spinner
          android:id="@+id/spinner1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/textView2"
          android:layout_toLeftOf="@+id/spinner2"
          android:entries="@array/priorArray"
          android:prompt="@string/prior_prompt" /&gt;
  
      &lt;Spinner
          android:id="@+id/spinner2"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignRight="@+id/textView3"
          android:layout_below="@+id/textView3"
          android:layout_toRightOf="@+id/textView7"
          android:entries="@array/genderArray"
          android:prompt="@string/gender_prompt" /&gt;
  
      &lt;TextView
          android:id="@+id/textView4"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/spinner1"
          android:text="Firstname"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;EditText
          android:id="@+id/editText1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_alignRight="@+id/spinner2"
          android:layout_below="@+id/textView4"
          android:ems="10" &gt;
  
          &lt;requestFocus /&gt;
      &lt;/EditText&gt;
  
      &lt;TextView
          android:id="@+id/textView5"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/editText1"
          android:text="Lastname"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;EditText
          android:id="@+id/editText2"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_alignRight="@+id/editText1"
          android:layout_below="@+id/textView5"
          android:ems="10" /&gt;
  
      &lt;TextView
          android:id="@+id/textView6"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/editText2"
          android:text="Age"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;Button
          android:id="@+id/button1"
          style="?android:attr/buttonStyleSmall"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_alignRight="@+id/textView5"
          android:layout_below="@+id/textView6"
          android:text="Age" /&gt;
  
      &lt;Button
          android:id="@+id/button2"
          style="?android:attr/buttonStyleSmall"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignTop="@+id/button1"
          android:layout_toLeftOf="@+id/button3"
          android:layout_toRightOf="@+id/textView4"
          android:text="BP/P" /&gt;
  
      &lt;Button
          android:id="@+id/button3"
          style="?android:attr/buttonStyleSmall"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignLeft="@+id/textView8"
          android:layout_alignRight="@+id/editText2"
          android:layout_below="@+id/textView8"
          android:text="ETA" /&gt;
  
      &lt;TextView
          android:id="@+id/textView7"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_above="@+id/button2"
          android:layout_toRightOf="@+id/textView4"
          android:text="BP/P"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;TextView
          android:id="@+id/textView8"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_above="@+id/button2"
          android:layout_alignLeft="@+id/textView3"
          android:text="ETA"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;ImageView
          android:id="@+id/imageView2"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_below="@+id/textView1"
          android:layout_toLeftOf="@+id/imageView1"
          android:src="@drawable/malefull" /&gt;
  
      &lt;TextView
          android:id="@+id/textView3"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_above="@+id/spinner1"
          android:layout_toLeftOf="@+id/imageView2"
          android:text="Gender"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;TextView
          android:id="@+id/textView9"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/button1"
          android:text="Location"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;EditText
          android:id="@+id/editText3"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/textView9"
          android:layout_toLeftOf="@+id/imageView2"
          android:ems="10" /&gt;
  
      &lt;TextView
          android:id="@+id/textView10"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/editText3"
          android:text="Special Handling"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;EditText
          android:id="@+id/editText4"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_alignRight="@+id/editText3"
          android:layout_below="@+id/textView10"
          android:ems="10" /&gt;
  
      &lt;TextView
          android:id="@+id/textView11"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/editText4"
          android:text="Drug(s)"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;EditText
          android:id="@+id/editText5"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/textView11"
          android:layout_toLeftOf="@+id/imageView2"
          android:ems="10" /&gt;
  
      &lt;TextView
          android:id="@+id/textView12"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/editText5"
          android:text="Diagnostic"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;EditText
          android:id="@+id/editText6"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_below="@+id/textView12"
          android:layout_toLeftOf="@+id/imageView2"
          android:ems="10" /&gt;
  
      &lt;Button
          android:id="@+id/submit"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_alignParentRight="true"
          android:layout_below="@+id/editText6"
          android:text="Submit" /&gt;
  
      &lt;ImageView
          android:id="@+id/imageView1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignBottom="@+id/imageView2"
          android:layout_alignParentRight="true"
          android:src="@drawable/back2" /&gt;
  
  &lt;/RelativeLayout&gt;
  &lt;/ScrollView&gt;
  </code></pre>
  
  <p>then i run it in the emulator and when click the button submit it said force the application closed. i have making the breakpoints and i think <code>genderSpin.getSelectedItemPosition()</code> is the cause. but how can i have the value that user choose for the spinner?</p>
  
  <p>your help is appreciate.</p>
  
  <p>===EDIT FOR SOLUTION.STATUS CLOSED===</p>
  
  <p>thank you for those who helped me a lot with this. this is my final solution. i need to make SpinnerAdapter first to retrieved the context of the spinner selected.</p>
  
  <p>i also followed tutorial from <a href="http://developer.android.com/guide/topics/ui/controls/spinner.html" rel="nofollow">here</a></p>
  
  <p>my last code would be</p>
  
  <pre><code>genderSpin = (Spinner)findViewById(R.id.gender_spin);
  
      ArrayAdapter&lt;CharSequence&gt; adapter = ArrayAdapter.createFromResource(this,
              R.array.genderArray, android.R.layout.simple_spinner_item);
      adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
      genderSpin.setAdapter(adapter);
      genderSpin.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
          public void onItemSelected(AdapterView&lt;?&gt; parent, View arg1, int pos, long arg3){
              String fontname = parent.getItemAtPosition(pos).toString();
              Toast.makeText(parent.getContext(), "The External Font Is " +fontname, Toast.LENGTH_LONG).show();
  
          }
  
          @Override
          public void onNothingSelected(AdapterView&lt;?&gt; arg0) {
              // TODO Auto-generated method stub
  
          }
      });
  </code></pre>
  
  <p>after selected spinner item, it will toast out "The External Font Is Female" if choosing female and toast out "The External Font Is Male" if choosing male. Thank you for the helped. Hope this could be good guidance for those who seeking for the help.</p>