Get the position of a spinner in Android

Question

I m trying to get the position  number  of the spinner when selected to use it in another Activity that will display a different map each time depending on the item selected  when I run the application it crashes  this is the first Activity code    public class TestProjectActivity extends Activity       public Spinner spinner1      public Integer number      private Button valideButton       public void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout main           MySpinner            valide button                public void MySpinner              final Spinner spinner1    Spinner  findViewById R id spinner1            ArrayAdapter lt CharSequence gt  adapter   ArrayAdapter createFromResource                  this  R array num  android R layout simple spinner item                                         adapter setDropDownViewResource android R layout simple spinner dropdown item           spinner1 setAdapter adapter            spinner1 setOnItemSelectedListener new OnItemSelectedListener                  public void onItemSelected AdapterView lt   gt  parentView                      View selectedItemView  int position  long id                       Object item   parentView getItemAtPosition position                    TestProjectActivity this number   spinner1                          getSelectedItemPosition     1                              public void onNothingSelected AdapterView lt   gt  arg0      do nothing                                        public void valide button              valideButton    Button  findViewById R id valide button           valideButton setOnClickListener new View OnClickListener                  public void onClick View v                     Intent intent   new Intent TestProjectActivity this                          MetroMapActivity class                   startActivity intent

User · Accepted Answer

The way to get the selection of the spinner is:

  spinner1.getSelectedItemPosition();

Documentation reference: http://developer.android.com/reference/android/widget/AdapterView.html#getSelectedItemPosition()

However, in your code, the one place you are referencing it is within your setOnItemSelectedListener(). It is not necessary to poll the spinner, because the onItemSelected method gets passed the position as the "position" variable.

So you could change that line to:

TestProjectActivity.this.number = position + 1;

If that does not fix the problem, please post the error message generated when your app crashes.

User · Answer

if  position   0        if  rYes isChecked              Toast makeText SportActivity this   yes ur answer is right   Toast LENGTH LONG  show          else if  rNo isChecked              Toast makeText SportActivity this   no ur answer is wrong   Toast LENGTH LONG  show              This code is supposed to select both check boxes  Is there a  problem with it

User · Answer

final int   positions new int 2        Spinner sp findViewByID R id spinner        sp setOnItemSelectedListener new AdapterView OnItemSelectedListener               Override         public void onItemSelected AdapterView lt   gt  arg0  View arg1                  int arg2  long arg3                   TODO Auto-generated method stub             Toast makeText  arg2                           Override         public void onNothingSelected AdapterView lt   gt  arg0                   TODO Auto-generated method stub

User · Answer

protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main           bt   findViewById R id button           spinner   findViewById R id sp item           setInfo            spinnerAdapter   new SpinnerAdapter this  arrayList           spinner setAdapter spinnerAdapter              spinner setOnItemSelectedListener new AdapterView OnItemSelectedListener                  Override             public void onItemSelected AdapterView lt   gt  parent  View view  int position  long id                      first   we have to retrieve the item position as a string                    then  we can change string value into integer                 String item position   String valueOf position                    int positonInt   Integer valueOf item position                    Toast makeText MainActivity this   value is    positonInt  Toast LENGTH SHORT  show                                Override             public void onNothingSelected AdapterView lt   gt  parent                                      note  the position of items is counted from 0

[android] Get the position of a spinner in Android

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