スピナーonItemSelectedは、上記

Question

private Spinner spinnerMonth; 

public View onCreateView(LayoutInflater inflater 
     , @Nullable ViewGroup container 
     , @Nullable Bundle savedInstanceState) { 
    super.onCreateView(inflater, container, savedInstanceState); 
    _view = inflater.inflate(R.layout.fragment_spinnerMonth, container, false); 
    // Month 
    spinnerMonth = (Spinner) _view.findViewById(R.id.spinnerMonth); 
    spinnerMonth.setAdapter(monthAdapter); 
    spinnerMonth.setSelection(_selectedMonth - 1); 
    return _view; 
} 

private void saveData() { 
    spinnerMonth.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 
     @Override 
     public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) { 
     Log.d("month",i);   
     } 

     @Override 
     public void onNothingSelected(AdapterView<?> adapterView) { 
     } 
    }); 
} 

私のコードは動作しません。グローバルSpinnerを決定した場合、onItemSelectedは機能しません。私が地元スピナーを決めたら、それは仕事です。なぜこれが起こるのですか？グローバルスピナーが必要です。

Answer 1

AdapterView.OnItemSelectedListenerインターフェースと対応onItemSelected（）コールバックメソッドを実装し、スピナーの選択イベントハンドラを定義する溶液

public View onCreateView(LayoutInflater inflater 
     , @Nullable ViewGroup container 
     , @Nullable Bundle savedInstanceState) { 
    super.onCreateView(inflater, container, savedInstanceState); 
    _view = inflater.inflate(R.layout.fragment_spinnerMonth, container, false); 
    // Month 
    spinnerMonth = (Spinner) _view.findViewById(R.id.spinnerMonth); 
    spinnerMonth.setAdapter(monthAdapter); 
    spinnerMonth.setSelection(_selectedMonth - 1); 
    spinnerMonth.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 
     @Override 
     public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) { 
     Log.d("month",i);   
     } 

     @Override 
     public void onNothingSelected(AdapterView<?> adapterView) { 
     } 
    }); 
    return _view; 
} 

Answer 2

を探します。

spinner.setOnItemSelectedListener(new OnItemSelectedListener() 
    { 
     public void onItemSelected(AdapterView<?> parent, View view, int position, long id) 
     { 
      String selectedItem = parent.getItemAtPosition(position).toString(); 

     } // to close the onItemSelected 
     public void onNothingSelected(AdapterView<?> parent) 
     { 

     }   
    }); 

https://developer.android.com/guide/topics/ui/controls/spinner.html