체크 박스를 클릭하면 내 체크리스트는 XML로 저장해야합니다. 어떻게해야합니까?

Question

내 체크 박스 목록이 표시되고 있지만 나중에 사용할 수 있도록 xml에 저장할 목록 항목을 확인하고 싶습니다. 어떻게? 여기 내 목록 코드, 환경 설정 .. 내 체크 박스 목록을 저장하는 방법을 코드로 설명해주십시오.

public class MachinesCheck extends Activity implements IObserver { 
     private StringBuffer buffer = new StringBuffer(); 
     private ListView mainListView ; 
     private ArrayList<Machine> Machines ; 
     private ArrayList<Machine> SelectedMachines ; 
     private ArrayAdapter<Machine> listAdapter ; 
     Vector<MDCMachineStatus> machineStatus_vector; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.machinecheck); 
    SelectedMachines = new ArrayList<Machine>(); 
    MachineStatusSingleton.Register(this); 
    getData(); 


    // Find the ListView resource. 
    mainListView = (ListView) findViewById(R.id.mainListView); 

    // When item is tapped, toggle checked properties of CheckBox and Planet. 
    mainListView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
     public void onItemClick(AdapterView<?> parent, View item, 
           int position, long id) { 
      Machine machine = listAdapter.getItem(position); 
      machine.toggleChecked(); 
     MachineViewHolder viewHolder = (MachineViewHolder) item.getTag(); 
     viewHolder.getCheckBox().setChecked(machine.isChecked()); 

     if (machine.checked) 
     { 
      SelectedMachines.add(machine); 
     } 
     else 
     { 
      SelectedMachines.remove(machine); 
     } 
     } 
    }); 




    listAdapter = new MachineArrayAdapter(this, Machines); 
    mainListView.setAdapter(listAdapter); 
    mainListView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 
    } 

    private void getData(){ 
     machineStatus_vector = MachineStatusSingleton.GetData(); 
     //arrayListofMachines = new ArrayList<String>(); 
     //arrayListofMachineNumbers = new ArrayList<String>(); 
     Machines = new ArrayList<Machine>(); 
     for(MDCMachineStatus temp: machineStatus_vector){ 
      //arrayListofMachines.add(temp.toString()); 
      //arrayListofMachineNumbers.add(temp.getNumber()); 
      Machines.add(new Machine(temp.toString(), temp.getNumber())); 

     } 



    } 


    private static class Machine { 
     private String name = "" ; 
     private String number =""; 
     private boolean checked = false ; 
     public Machine() {} 
     public Machine(String name, String number) { 
      this.name = name ; 
      this.number = number ; 
     } 
     public Machine(String name, boolean checked) { 
      this.name = name ; 
      this.checked = checked ; 
     } 

     public String getName() { 
      return name; 
     } 
     public void setName(String name) { 
      this.name = name; 
     } 

     public String getNumber() { 
       return number; 
      } 
      public void setNumber(String number) { 
       this.number = number; 
      } 

     public boolean isChecked() { 
      return checked; 
     } 
     public void setChecked(boolean checked) { 
      this.checked = checked; 
     } 
     public String toString() { 
      return name ; 
     } 
     public void toggleChecked() { 
      checked = !checked ; 
     } 
     } 


    private static class MachineViewHolder { 
     private CheckBox checkBox ; 
     private TextView textView ; 

     public MachineViewHolder(TextView textView, CheckBox checkBox) { 
      this.checkBox = checkBox ; 
      this.textView = textView ; 
     } 
     public CheckBox getCheckBox() { 
      return checkBox; 
     } 
     public void setCheckBox(CheckBox checkBox) { 
      this.checkBox = checkBox; 
     } 
     public TextView getTextView() { 
      return textView; 
     } 
     public void setTextView(TextView textView) { 
      this.textView = textView; 
     }  
     } 




    private static class MachineArrayAdapter extends ArrayAdapter<Machine> { 

     private LayoutInflater inflater; 

     public MachineArrayAdapter(Context context, List<Machine> machineList) { 
      super(context, R.layout.selectedlist, R.id.rowTextView, machineList); 
      // Cache the LayoutInflate to avoid asking for a new one each time. 
      inflater = LayoutInflater.from(context) ; 
     } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     // Machine to display 
     Machine machine = (Machine) this.getItem(position); 

     // The child views in each row. 
     CheckBox checkBox ; 
     TextView textView ; 

     // Create a new row view 
     if (convertView == null) { 
     convertView = inflater.inflate(R.layout.selectedlist, null); 

     // Find the child views. 
     textView = (TextView) convertView.findViewById(R.id.rowTextView); 
     checkBox = (CheckBox) convertView.findViewById(R.id.CheckBox01); 

     // Optimization: Tag the row with it's child views, so we don't have to 
     // call findViewById() later when we reuse the row. 
     convertView.setTag(new MachineViewHolder(textView,checkBox)); 

     // If CheckBox is toggled, update the planet it is tagged with. 
     checkBox.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
      CheckBox cb = (CheckBox) v ; 
      Machine machine = (Machine) cb.getTag(); 
      machine.setChecked(cb.isChecked()); 

      } 
     });   
     } 
     // Reuse existing row view 
     else { 
     // Because we use a ViewHolder, we avoid having to call findViewById(). 
     MachineViewHolder viewHolder = (MachineViewHolder) convertView.getTag(); 
     checkBox = viewHolder.getCheckBox() ; 
     textView = viewHolder.getTextView() ; 
     } 

     // Tag the CheckBox with the Planet it is displaying, so that we can 
     // access the planet in onClick() when the CheckBox is toggled. 
     checkBox.setTag(machine); 

     // Display planet data 
     checkBox.setChecked(machine.isChecked()); 
     textView.setText(machine.getName());  

     return convertView; 
    } 

    } 

    public Object onRetainNonConfigurationInstance() { 
    return Machines ; 
    } 

public void Update(ISubject arg0) { 
    // TODO Auto-generated method stub 

} 
    } 

여기에 내 환경 설정을 확인하고 데이터가 어떻게 저장되는지 알려주세요.

<PreferenceScreen 
       android:key="DataEntryScreen" 
       android:title="Data Entry Machine" 
       android:summary="Select a Machine"> 

      </PreferenceScreen> 

Answer 1

이 코드를 사용하여 XML을 생성하고 저장 한 다음 파일에 저장하십시오.

private static StringWriter createXml(ArrayList<Machine> SelectedMachines) { 
     StringWriter writer = new StringWriter(); 
     XmlSerializer serializer = Xml.newSerializer(); 
     try { 
      serializer.setOutput(writer); 
      serializer.startDocument("UTF-8", true); 
      serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true); 
      serializer.startTag(null, "Machine"); 

      for (Machine machine : SelectedMachines) { 
       serializer.startTag(null, "Name"); 
       serializer.text(machine.getName()); 
       serializer.endTag(null, "Name"); 
       serializer.startTag(null, "Number"); 
       serializer.text(machine.getNumber()); 
       serializer.endTag(null, "Number"); 
      } 

      if (serializer == null) 
       return null; 
      serializer.endTag(null, "Machine"); 
      serializer.endDocument(); 
      serializer.flush(); 
      writer.close(); 
     } catch (Exception e) { 
      Log.e("createXml", e.toString()); 
     } 
     return writer; 
    }