動態的方式來使用複選框

Question

我有alertdialog自定義複選框，我需要將選定的選項傳遞給宿主活動，並堅持選定的選項。這裏是我的代碼：

public class TimelineSettings extends DialogFragment { 
    ArrayList<Integer> selected_categories = new ArrayList<Integer>(); 
    boolean[] itemsChecked = {false, false, false, false, false, false}; 
    private FlatCheckBox fourniture,nourriture,voyages,habillement,medias,autres; 


    public interface dialoglistener { 
     public void onOkay(ArrayList<Integer> selected); 
     public void onCancel(); 
    } 
    dialoglistener mlistener; 

    @Override 
    public void onAttach(Activity activity) { 
     super.onAttach(activity); 
     // ensure that the host activity implements the callback interface 
     try { 
      // Instantiate the dialogListener so we can send events to the host 
      mlistener = (dialoglistener) activity; 
     } catch (ClassCastException e) { 
      // if activity doesn't implement the interface, throw an exception 
      throw new ClassCastException(activity.toString() 
        + " must implement dialogListener"); 
     } 
    } 
    @Override 
    public Dialog onCreateDialog(Bundle savedInstanceState) { 

     AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); 
     LayoutInflater inflater = LayoutInflater.from(getActivity()); 
     View custom = inflater.inflate(R.layout.custom_settings,null); 
     fourniture = (FlatCheckBox)custom.findViewById(R.id.fourniture); 
     nourriture = (FlatCheckBox)custom.findViewById(R.id.nourriture); 
     voyages = (FlatCheckBox)custom.findViewById(R.id.voyages); 
     habillement = (FlatCheckBox)custom.findViewById(R.id.habillement); 
     medias = (FlatCheckBox)custom.findViewById(R.id.medias); 
     autres = (FlatCheckBox)custom.findViewById(R.id.autres); 

     if (selected_categories.contains(0)){ 
      fourniture.setChecked(true); 
     } 
     if (selected_categories.contains(1)){ 
      nourriture.setChecked(true); 
     } 
     if (selected_categories.contains(2)){ 
      voyages.setChecked(true); 
     } 
     if (selected_categories.contains(3)){ 
      habillement.setChecked(true); 
     } 
     if (selected_categories.contains(4)){ 
      medias.setChecked(true); 
     } 
     if (selected_categories.contains(5)){ 
      autres.setChecked(true); 
     } 
       builder.setView(custom) 
        .setPositiveButton("OK", new DialogInterface.OnClickListener() { 
        @Override 
        public void onClick(DialogInterface dialog, int id) { 
         checkboxState(); 
         mlistener.onOkay(selected_categories); 
        } 
       }) 
       .setNegativeButton("Annuler", new DialogInterface.OnClickListener() { 
        @Override 
        public void onClick(DialogInterface dialog, int id) { 
         mlistener.onCancel(); 
        } 
       }); 
     return builder.create(); 
    } 
    public void checkboxState(){ 
     if (fourniture.isChecked()){ 
      if(!selected_categories.contains(0)){ 
       selected_categories.add(0); 
       itemsChecked[0]=true; 
      } 
      else if (selected_categories.contains(0)) { 
       // Else, if the item is already in the array, remove it 
       selected_categories.remove(0); 
       itemsChecked[0]=false; 
      } 

     } 
     if (nourriture.isChecked()){ 
      if(!selected_categories.contains(1)){ 
       selected_categories.add(1); 
       itemsChecked[1]=true; 
      } 
      else if (selected_categories.contains(1)) { 
       selected_categories.remove(1); 
       itemsChecked[1]=false; 
      } 

     } 

     if (voyages.isChecked()){ 
      if(!selected_categories.contains(2)){ 
       selected_categories.add(2); 
       itemsChecked[2]=true; 
      } 
      else if (selected_categories.contains(2)) { 
       selected_categories.remove(2); 
       itemsChecked[2]=false; 
      } 

     } 
     if (habillement.isChecked()){ 
      if(!selected_categories.contains(3)){ 
       selected_categories.add(3); 
       itemsChecked[3]=true; 
      } 
      else if (selected_categories.contains(3)) { 
       selected_categories.remove(3); 
       itemsChecked[3]=false; 
      } 

     } 

     if (medias.isChecked()){ 
      if(!selected_categories.contains(4)){ 
       selected_categories.add(4); 
       itemsChecked[4]=true; 
      } 
      else if (selected_categories.contains(4)) { 
       selected_categories.remove(4); 
       itemsChecked[4]=false; 
      } 

     } 

     if (autres.isChecked()){ 
      if(!selected_categories.contains(5)){ 
       selected_categories.add(5); 
       itemsChecked[5]=true; 
      } 
      else if (selected_categories.contains(5)) { 
       selected_categories.remove(5); 
       itemsChecked[5]=false; 
      } 

     } 
    } 
} 

此代碼工作正常，但它看起來不是這樣！太多，如果elses ... 我的問題是，如果有一種方法來使用我的複選框的循環來獲得他們的狀態，然後將數組itemschecked的元素設置爲真/假的持久性。 謝謝！

Answer 1

保持FlatCheckBoxs數組：

private FlatCheckBox [] check = new FlatCheckBox[6]; 

，並使用一個枚舉以檢索哪些複選框您需要：

private enum Names 
{ 
    fourniture(0), 
    nourriture(1), 
    voyages(2), 
    habillement(3), 
    medias(4), 
    autres(5); 

    private int val; 

    Names(int a) 
    { 
     val = a; 
    } 

    public int get() 
    { 
     return val; 
    } 
}; 

現在用途：

public void checkboxState() 
    { 
     for(FlatCheckBox fb : check) 
     { 
      if (fb.isChecked()) 
      { 

      } 
     } 
    } 

，您可以訪問個人像這樣的陣列元素：

FlatCheckBox fourniture = check[Names.fourniture.get()]; 

我會使用枚舉更好的可讀性，使用[0]，[1] ...可能會混淆並導致編程錯誤。