하나의 상자를 선택하십시오. 여러 상자가 선택되어 있습니다.

Question

사용자 정의 listViewAdapter 클래스를 사용하고 있으며 한 줄에 하나의 상자를 체크하고 싶지만 여러 요구 사항이 아닌 여러 줄을 여러 번 체크하고 있습니다. 어떻게 해결할 수 있는지 말해주십시오. 당신의 getView 방법은 어댑터 내부

CourseActivity.java

package com.technerdshub.vusocial.Activities; 

import android.content.Intent; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.text.Editable; 
import android.text.TextWatcher; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.CheckBox; 
import android.widget.CompoundButton; 
import android.widget.EditText; 
import android.widget.ListView; 
import android.widget.Toast; 

import com.parse.ParseException; 
import com.parse.ParseObject; 
import com.parse.SaveCallback; 
import com.technerdshub.vusocial.DBHelper; 
import com.technerdshub.vusocial.Models.Course; 
import com.technerdshub.vusocial.Models.StudyProgramModel; 
import com.technerdshub.vusocial.Models.User; 
import com.technerdshub.vusocial.R; 

import java.util.ArrayList; 
import java.util.List; 
import java.util.Locale; 

public class CourseActivity extends AppCompatActivity implements AdapterView.OnItemClickListener { 

    ListView list; 
    EditText editsearch; 
    ArrayList arrayList = new ArrayList(); 
    CourseViewAdapter adapter; 
    Course courseObject; 
    boolean isChecked; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.course_activity); 


     List<Course> courseList; 
     DBHelper db = new DBHelper(this); 
     courseList = db.getAllCourses(); 

     list = (ListView) findViewById(R.id.listview1); 

     for (Course c : courseList) { 
      arrayList.add(c); 
     } 

     adapter = new CourseViewAdapter(this, arrayList); 
     adapter.courseActivity = this; 
     list.setAdapter(adapter); 

     editsearch = (EditText) findViewById(R.id.searchF); 
     editsearch.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) { 
       String text = editsearch.getText().toString().toLowerCase(Locale.getDefault()); 
       adapter.filter(text); 
      } 

      @Override 
      public void afterTextChanged(Editable s) { 

      } 
     }); 

     User user = User.getInstance(); 
     saveUserOnParse(user); 

    } 

    private void saveUserOnParse(User user) { 
     ParseObject parseUser = new ParseObject("UserData"); 
     parseUser.put("name", user.getName()); 
     parseUser.put("vuId", user.getVuId()); 
     parseUser.put("studyProgram", user.getStudyProgram()); 
     parseUser.put("facebookId", user.getFacebookId()); 
     parseUser.put("facebookEmail", user.getFacebookEmail()); 
     parseUser.saveInBackground(new SaveCallback() { 
      @Override 
      public void done(ParseException e) { 
       if (e == null) { 
//     Intent i = new Intent(getContext(), StudentDashboardActivity.class); 
////     i.putExtra("E-mail", "abc"); 
//     startActivity(i); 
       } else { 
        Toast temp = Toast.makeText(CourseActivity.this, "Data is not saved.", Toast.LENGTH_SHORT); 
        temp.show(); 
       } 
      } 
     }); 
    } 

    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     super.onActivityResult(requestCode, resultCode, data); 
     // check if the request code is same as what is passed here it is 4 

     if (requestCode == 2) { 
      courseObject = (Course) data.getExtras().getSerializable("SelectedCourse"); 
     } 
    } 

    @Override 
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
     // TODO Auto-generated method stub 
     CheckBox cb = (CheckBox) view.findViewById(R.id.checkBox); 
//   TextView tv = (TextView) v.findViewById(R.id.textView1); 
     cb.performClick(); 
     if (cb.isChecked()) { 


//   checkedValue.add(tv.getText().toString()); 
     } else if (!cb.isChecked()) { 
//   checkedValue.remove(tv.getText().toString()); 

     } 
    } 


} 

CourseViewAdapter.java는

package com.technerdshub.vusocial.Activities; 

    import android.content.Context; 
    import android.content.Intent; 
    import android.view.LayoutInflater; 
    import android.view.View; 
    import android.view.ViewGroup; 
    import android.widget.BaseAdapter; 
    import android.widget.CheckBox; 
    import android.widget.TextView; 

    import com.technerdshub.vusocial.Models.Course; 
    import com.technerdshub.vusocial.Models.StudyProgramModel; 
    import com.technerdshub.vusocial.R; 

    import java.util.ArrayList; 
    import java.util.List; 
    import java.util.Locale; 

    /** 
    * Created by Saroosh on 7/16/2016. 
    */ 
    public class CourseViewAdapter extends BaseAdapter { 

     protected CourseActivity courseActivity; 
     Context mContext; 
     LayoutInflater inflater; 
     private List<Course>worldpopulationlist=null; 
     private ArrayList<Course> arraylist; 

     public CourseViewAdapter(Context context, List<Course>worldpopulationlist){ 
      mContext = context; 
      this.worldpopulationlist = worldpopulationlist; 
      inflater = LayoutInflater.from(mContext); 
      this.arraylist = new ArrayList<Course>(); 
      this.arraylist.addAll(worldpopulationlist); 
     } 

     public class ViewHolder { 
      TextView courseCode; 
      TextView courseName; 
      CheckBox checkBox; 

     } 

     @Override 
     public int getCount() { 
      return worldpopulationlist.size(); 
     } 

     @Override 
     public Course getItem(int position) { 
      return worldpopulationlist.get(position); 
     } 

     @Override 
     public long getItemId(int position) { 
      return position; 
     } 

     public View getView(final int position, View view, ViewGroup parent) { 
      final ViewHolder holder; 
      if (view == null) { 
       holder = new ViewHolder(); 
       view = inflater.inflate(R.layout.c_list_item, null); 
       // Locate the TextViews in listview_item.xml 

       holder.courseName = (TextView) view.findViewById(R.id.course_name); 
       holder.courseCode = (TextView) view.findViewById(R.id.course_code); 
       holder.checkBox= (CheckBox) view.findViewById(R.id.checkBox); 
       // holder.duration = (TextView) view.findViewById(R.id.program_duration); 

       view.setTag(holder); 
      } else { 
       holder = (ViewHolder) view.getTag(); 
      } 
      // Set the results into TextViews 
      holder.courseName.setText(worldpopulationlist.get(position).getCourseName()); 

      holder.courseCode.setText(worldpopulationlist.get(position).getCourseCode()); 

      //holder.duration.setText(worldpopulationlist.get(position).getDuration()); 

      view.setOnClickListener(new View.OnClickListener() { 

       @Override 
       public void onClick(View arg0) { 


        // Send single item click data to SingleItemView Class 
        Intent intent = new Intent(mContext, CourseActivity.class); 
        // Pass all data ran 
        intent.putExtra("SelectedCourse", worldpopulationlist.get(position)); 
        // Pass all data country 
        courseActivity.setResult(2,intent); 

        courseActivity.finish(); 
       } 
      }); 

      return view; 
     } 
     // Filter Class 
     public void filter(String charText) { 
      charText = charText.toLowerCase(Locale.getDefault()); 
      worldpopulationlist.clear(); 
      if (charText.length() == 0) { 
       worldpopulationlist.addAll(arraylist); 
      } 
      else 
      { 
       for (Course wp : arraylist) 
       { 
        if (wp.getCourseName().toLowerCase(Locale.getDefault()).contains(charText)) 
        { 
         worldpopulationlist.add(wp); 
        } 
       } 
      } 
      notifyDataSetChanged(); 
     } 
    } 

Answer 1

는 모든 체크 박스 로직을 작성합니다. 그게 효과가있다.