Сбой spinner при нажатии на

Question

У меня есть spinner на моей странице, которая заполняется с помощью arrayAdapter. Когда я запускаю свое приложение, все в порядке, но в тот момент, когда я нажимаю на spinner, приложение падает, а logcat не дает мне ссылки на строку в моем коде. Вот это область кода со ссылкой на блесны:

profiles = (Spinner) findViewById(R.id.spinner1); 

    SetSql getprofiles = new SetSql(this); 
    getprofiles.open(); 
    spinnerArray = getprofiles.getProfiles(); 
    if(spinnerArray[0]==null){ 
     spinnerArray = new String[1]; 
     spinnerArray[0] = "No Profiles, Please Create One"; 
    } 
    getprofiles.close(); 

    ArrayAdapter<String> array = new ArrayAdapter<String>(UserActivity.this, android.R.layout.simple_spinner_item, spinnerArray); 
    array.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
    profiles.setAdapter(array); 

    //I am using the post method to make sure that this spinner wont run when the activity is started 
    profiles.post(new Runnable(){ 
     public void run(){ 
      profiles.setOnItemSelectedListener(new OnItemSelectedListener() { 

       @Override 
       public void onItemSelected(AdapterView<?> ListView, View arg1, 
         int pos, long arg3) { 
        // TODO Auto-generated method stub 
         if(!profiles.getItemAtPosition(pos).toString().equals("No Profiles, Please Create One")){ 
          String selected = profiles.getItemAtPosition(pos).toString(); 
          Intent intent = new Intent(UserActivity.this, DPAActivity.class); 
          intent.putExtra("username", selected); 
          startActivity(intent); 
         } 
       } 

       @Override 
       public void onNothingSelected(AdapterView<?> arg0) { 
        // TODO Auto-generated method stub 

       } 
      }); 
     } 

    }); 

Больше LogCat:

03-07 16:25:45.740: E/AndroidRuntime(6929): FATAL EXCEPTION: main 
03-07 16:25:45.740: E/AndroidRuntime(6929): java.lang.NullPointerException 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:355) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.widget.ArrayAdapter.getDropDownView(ArrayAdapter.java:376) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.widget.Spinner$DropDownAdapter.getDropDownView(Spinner.java:332) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.widget.Spinner$DropDownAdapter.getView(Spinner.java:328) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.widget.AbsListView.obtainView(AbsListView.java:1409) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.widget.ListView.measureHeightOfChildren(ListView.java:1216) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.widget.ListView.onMeasure(ListView.java:1127) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.view.View.measure(View.java:8313) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1017) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.widget.LinearLayout.measureVertical(LinearLayout.java:386) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.widget.LinearLayout.onMeasure(LinearLayout.java:309) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.view.View.measure(View.java:8313) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1017) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.widget.LinearLayout.measureVertical(LinearLayout.java:386) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.widget.LinearLayout.onMeasure(LinearLayout.java:309) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at com.android.internal.widget.WeightedLinearLayout.onMeasure(WeightedLinearLayout.java:60) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.view.View.measure(View.java:8313) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.view.View.measure(View.java:8313) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.view.View.measure(View.java:8313) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.view.ViewRoot.performTraversals(ViewRoot.java:839) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.view.ViewRoot.handleMessage(ViewRoot.java:1859) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.os.Handler.dispatchMessage(Handler.java:99) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.os.Looper.loop(Looper.java:130) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at android.app.ActivityThread.main(ActivityThread.java:3683) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at java.lang.reflect.Method.invokeNative(Native Method) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at java.lang.reflect.Method.invoke(Method.java:507) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 
03-07 16:25:45.740: E/AndroidRuntime(6929):  at dalvik.system.NativeStart.main(Native Method) 

Мой getProfiles Код

public void createProfile(String name) { 
     // TODO Auto-generated method stub 
     ContentValues cv = new ContentValues(); 
     cv.put(KEY_USER, name); 
     ourDatabase.insert(TABLE_USERS, null, cv); 
    } 

    public String[] getProfiles() throws SQLException{ 
     String[] columns = new String[]{KEY_USER}; 
     Cursor c = ourDatabase.query(TABLE_USERS, columns, null, null, null, null, KEY_ROWID); 
     String[] result = new String[100]; 

     int iName = c.getColumnIndex(KEY_USER); 
     int count = 0; 
     for(c.moveToFirst(); !c.isAfterLast(); c.moveToNext()){ 
      result[count] = c.getString(iName); 
      count++; 
     } 
     return result; 
    } 
} 

Это возвращает массив строк.

Answer 1

if(arrayspinner[0]==null){ 
     arrayspinner = new String[1]; 
     arrayspinner[0] = "No Profiles, Please Create One"; 
    } 

изменить код и попробуйте

EDIT:

вместо Array попробуйте использовать ArrayList

List<String> arrayList=Arrays.asList(your string array); 

или еще попробовать инициализировать массив, получая размер вашего ответа.

EDIT 2:

List<String> a= Arrays.asList(new String[]{}); 
     if(a.size()==0){ 
      a=new ArrayList<String>(); 
     a.add("xxx"); 
     a.add("bbbb"); 
     } 
     final Spinner s=(Spinner)findViewById(R.id.spinner1); 
     ArrayAdapter<String> array = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, a); 
     array.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
     s.setAdapter(array); 
     s.post(new Runnable() { 

      @Override 
      public void run() { 
       // TODO Auto-generated method stub 
       s.setOnItemSelectedListener(new OnItemSelectedListener() { 

        @Override 
        public void onItemSelected(AdapterView<?> arg0, View arg1, 
          int arg2, long arg3) { 
         // TODO Auto-generated method stub 

        } 

        @Override 
        public void onNothingSelected(AdapterView<?> arg0) { 
         // TODO Auto-generated method stub 

        } 
       }); 
      } 
     }); 

попробовал образец такой же, как ваш код и он работает.

EDIT 3:

public String[] getProfiles() throws SQLException{ 
     String[] columns = new String[]{KEY_USER}; 
     Cursor c = ourDatabase.query(TABLE_USERS, columns, null, null, null, null, KEY_ROWID); 
     String[] result; 
     if(c != null && c.getCount()!=0){ 
     result = new String[c.getCount()]; 

     int iName = c.getColumnIndex(KEY_USER); 
     int count = 0; 
     for(c.moveToFirst(); !c.isAfterLast(); c.moveToNext()){ 
      result[count] = c.getString(iName); 
      count++; 
     } 
     }else{ 
     result = new String[]{"No Profiles, Please Create One"}; 
     } 
     return result; 
    } 

Answer 2

Изменение, если условие внутри onItemSelected как:

if(profiles.getItemAtPosition(pos). 
         toString().equals("No Profiles, Please Create One")){ 
    // your code here.... 
} 

, потому что в настоящее время вы используете ListView.getItemAtPosition для получения выбранного элемента из Spinner