共有環境設定でCheckBoxの状態を保存するにはどうすればよいですか？

Question

私はチェックボックスを使ってリストビューを持つタブとビューポケベルを持っていますが、チェックボックスを選択してタブを変更し、前のタブをクリックした後、前に選択したチェックボックスがチェックされません。

FRAGMENT：

public class MyListFragment extends Fragment implements 
     android.widget.CompoundButton.OnCheckedChangeListener { 

    ListView lv; 
    ArrayList<Planet> planetList; 
    PlanetAdapter plAdapter; 
    BirraAdapter biAdapter; 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     // Inflate the layout for this fragment 
     SharedPreferences preferences = getContext().getSharedPreferences("PROJECT_NAME", android.content.Context.MODE_PRIVATE); 


boolean value = preferences.getBoolean("showActivity", true); 
     String value2 = preferences.getString("KEY", String.valueOf(true)); 
     ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.fragment_list2, container, false); 
     Button mButton = (Button) rootView.findViewById(R.id.button); 
     mButton.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
      showResult(v); 
      } 
     }); 
     //return inflater.inflate(R.layout.fragment_list2, container, false); 
     return rootView; 
    } 

    @Override 
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { 
     super.onViewCreated(view, savedInstanceState); 

     lv = (ListView)getView().findViewById(R.id.listview); 
     displayPlanetList(); 
    } 

    private void displayPlanetList() { 

     planetList = new ArrayList<Planet>(); 
     planetList.add(new Planet("Margherita", 6, "€")); 
     planetList.add(new Planet("Diavola", 7,"€")); 
     planetList.add(new Planet("Bufalina", 5,"€")); 
     planetList.add(new Planet("Marinara", 5,"€")); 
     planetList.add(new Planet("Viennese", 4,"€")); 

     plAdapter = new PlanetAdapter(planetList, getContext()) { 
      @Override 
      public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 
       int pos = lv.getPositionForView(buttonView); 
       if (pos != ListView.INVALID_POSITION) { 
        Planet p = planetList.get(pos); 
        p.setSelected(isChecked); 

      /*Toast.makeText(
       getActivity(), 
       "Clicked on Pizza: " + p.getName() + ". State: is " 
         + isChecked, Toast.LENGTH_SHORT).show();*/ 
       } 
      } 
     }; 
     lv.setAdapter(plAdapter); 
    } 

    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 

     /*int pos = lv.getPositionForView(buttonView); 
     if (pos != ListView.INVALID_POSITION) { 
      Planet p = planetList.get(pos); 
      p.setSelected(isChecked); 

    } 
    public void showResult(View v) { 
     String result2 = "Selected Product are :"; 
     int totalAmount2=0; 

     String a=""; 
     for (Birra b : biAdapter.getBox()){ 

      if (b.selected){ 

       result2 += "\n" + b.name+" "+b.distance+"€"+"q.tà :"+b.getQuantità(); 
       int quantitaInt= Integer.parseInt(b.getQuantità()); 
       totalAmount2+=b.distance * quantitaInt; 
       //a=String.valueOf(totalAmount); 

      } 
     } 
    /* for (Planet p : plAdapter.getBox()) { 
      if (p.selected){ 

       result += "\n" + p.name+" "+p.distance+"€"+"q.tà :"+p.getQuantità(); 
       int quantitaInt= Integer.parseInt(p.getQuantità()); 
       totalAmount+=p.distance * quantitaInt; 
       //a=String.valueOf(totalAmount); 


      } 
     }*/ 
     //Toast.makeText(getActivity(), result + "\n" + "Total Amount:=" + totalAmount + "€", Toast.LENGTH_LONG).show(); 
     Toast.makeText(getActivity(), result2 + "\n" + "Total Amount:=" + totalAmount2 + "€", Toast.LENGTH_LONG).show(); 

     /*Bundle bun2 = new Bundle(); 
     bun2.putString("scelta", result); 
     TwoFragment fgsearch2 = new TwoFragment(); 
     fgsearch2.setArguments(bun2); 
     android.support.v4.app.FragmentTransaction transaction2 = getActivity().getSupportFragmentManager().beginTransaction(); 
     transaction2.replace(R.id.content_main, fgsearch2); 
     transaction2.commit(); 
     Bundle bun = new Bundle(); 
     bun.putString("totale", a); 
     TwoFragment fgsearch = new TwoFragment(); 
     fgsearch.setArguments(bun); 
     android.support.v4.app.FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction(); 
     transaction.replace(R.id.content_main2, fgsearch); 
     transaction.commit(); 
*/ 
    } 
} 

アダプタ：

public abstract class PlanetAdapter extends ArrayAdapter<Planet> implements CompoundButton.OnCheckedChangeListener 

{ 

    private List<Planet> planetList; 
    private Context context; 
    ArrayList<Birra> objects; 


    public PlanetAdapter(List<Planet> planetList, Context context) { 
     super(context, R.layout.single_listview_item, planetList); 
     this.planetList = planetList; 
     this.context = context; 
    } 
    public class PlanetHolder { 
     public TextView planetName; 
     public TextView distView; 
     public TextView valuta; 
     public CheckBox chkBox; 
     public EditText edit; 
     public String quantità; 
} 
    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 

     View row = convertView; 
     PlanetHolder holder = null; 
     if (row == null) { 
      LayoutInflater inflater = ((Activity) context).getLayoutInflater(); 
      row = inflater.inflate(R.layout.single_listview_item, parent, false); 
      holder = new PlanetHolder(); 
      holder.planetName = (TextView) row.findViewById(R.id.name); 
      holder.distView = (TextView) row.findViewById(R.id.dist); 
      holder.valuta = (TextView) row.findViewById(R.id.valuta); 
      holder.chkBox = (CheckBox) row.findViewById(R.id.chk_box); 
      holder.edit = (EditText) row.findViewById(R.id.editText); 
      holder.edit.setVisibility(View.GONE); 
      holder.edit.setEnabled(false); 
      row.setTag(holder); 
     } else { 
      holder = (PlanetHolder) row.getTag(); 
     } 
     final Planet p = planetList.get(position); 

     holder.chkBox.setOnCheckedChangeListener(PlanetAdapter.this); 
     final PlanetHolder finalHolder = holder; 
     holder.chkBox.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       if (finalHolder.chkBox.isChecked()) { 
        finalHolder.edit.setVisibility(View.VISIBLE); 
        finalHolder.edit.setEnabled(true); 
        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context); 
        SharedPreferences.Editor editor = sharedPreferences.edit(); 
        editor.putBoolean("showActivity", finalHolder.chkBox.isChecked()); 
        editor.commit(); 
        finalHolder.edit.addTextChangedListener(new TextWatcher() { 
         @Override 
         public void beforeTextChanged(CharSequence s, int start, int count, int after) { 
         } 

         @Override 
         public void onTextChanged(CharSequence s, int start, int before, int count) { 
         } 

         @Override 
         public void afterTextChanged(Editable s) { 
          p.setQuantità(finalHolder.edit.getText().toString().trim()); 
          SharedPreferences preferences = getContext().getSharedPreferences("PROJECT_NAME", android.content.Context.MODE_PRIVATE); 
          SharedPreferences.Editor editor = preferences.edit(); 
          editor.putString("KEY", finalHolder.edit.getText().toString()); 
          //editor.putBoolean("chkBox", true); 
          editor.commit(); 
          } 
        }); 
       } else { 
        finalHolder.edit.setVisibility(View.GONE); 
        finalHolder.edit.setEnabled(false); 
        finalHolder.edit.setText(null); 
       } 
      } 
     }); 
     holder.planetName.setText(p.getName()); 
     holder.distView.setText("" + p.getDistance()); 
     holder.valuta.setText(""+p.getValuta()); 
     holder.chkBox.setChecked(p.isSelected()); 
     holder.chkBox.setTag(p); 
     holder.edit.setEnabled(false); 

     return row; 
    } 

    ArrayList<Planet> getBox() { 
     ArrayList<Planet> box = new ArrayList<Planet>(); 
     for (Planet p : planetList) { 
      if (p.selected) 
       box.add(p); 
     } 
     return box; 
    } 


} 

Answer 1

あなたのチェックボックスがその上にクリックの結果を保存していないためです。 SharedPreferenceを使用してデータを格納します。

同様：ここ

public class UserPreference { 


     SharedPreferences pref; 

    // Editor for Shared preferences 
    SharedPreferences.Editor editor; 

    // Context 
    Context _context; 

    // Shared pref mode 
    int PRIVATE_MODE = 0; 

    // Sharedpref file name 
    private static final String PREF_NAME = "user_preference"; 

    public static final String isSportsCheck = "isSportsChecked"; 
    public static final String isTechnologyCheck = "isTechnologyChecked"; 

    public UserPreference(Context context){ 
     this._context = context; 
     pref = _context.getSharedPreferences(PREF_NAME, PRIVATE_MODE); 
     editor = pref.edit(); 
    } 

    public void createWork(boolean sports, boolean tech){ 
     editor.putBoolean(isSportsCheck, sports); 
     editor.putBoolean(isTechnologyCheck, tech); 
     editor.commit(); 
    } 

    public HashMap<String, String> getWorkDetails(){ 
     HashMap<String, String> user = new HashMap<String, String>(); 
     user.put(isSportsCheck, pref.getBoolean(isSportsCheck, false)); 
     user.put(isTechnologyCheck, pref.getBoolean(isTechnologyCheck, false)); 

     return user; 
    } 

あなたは、Bufalina、マリナーラのようなあなたが望む任意の値を持つ技術を、スポーツを変更することができます。使用法：

UserPreference u = new UserPreference(getContext()); 
u.createWork(true, true); 

Answer 2

シンプルかつエレガントな解決策は、共有設定の上に抽象化以外の何ものでもないアンドロイドでは非常にシンプルなライブラリTinyDBを、使用することです。

あなたはこのようなあなたの活動ののonCreate（）メソッドでそれを初期化することができます

TinyDB tinydb = new TinyDB(this); 
And then use it like this: 

tinydb.putString("userName", "john"); 
String currentUser = tinydb.getString("userName"); 

はそれがお役に立てば幸いです。