連絡先を2回表示するのを止めるにはどうしたらいいですか？

Question

私はアンドロイド携帯電話の連絡先がリストされており、それらを検索できるサンプルアプリを持っています。しかし、頻繁に連絡先が2回表示されます。私は彼らが一度だけリストされることを望む。これを修正するために私のコードで何を変更する必要がありますか？私は以下のコードの関連部分を投稿しました。

私はここで試しましたhow to remove duplicate contacts from arraylistしかし、私は自分のニーズに合うようにコードを修正することができませんでした。

MainActivity.java

package com.example.chris.contactlistcustomlistview; 

     import android.app.Activity; 
     import android.content.ContentResolver; 
     import android.database.Cursor; 
     import android.graphics.Bitmap; 
     import android.net.Uri; 
     import android.os.AsyncTask; 
     import android.os.Bundle; 
     import android.provider.ContactsContract; 
     import android.provider.MediaStore; 
     import android.util.Log; 
     import android.view.View; 
     import android.widget.AdapterView; 
     import android.widget.ListView; 
     import android.widget.SearchView; 
     import android.widget.Toast; 

     import java.io.IOException; 
     import java.util.ArrayList; 
     import java.util.List; 


public class MainActivity extends Activity { 

    // ArrayList 
    ArrayList<SelectUser> selectUsers; 
    List<SelectUser> temp; 
    // Contact List 
    ListView listView; 

    // Cursor to load contacts list 
    Cursor phones, email; 

    // Pop up 
    ContentResolver resolver; 
    SearchView search; 
    SelectUserAdapter adapter; 

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

     selectUsers = new ArrayList<SelectUser>(); 
     resolver = this.getContentResolver(); 
     listView = (ListView) findViewById(R.id.contacts_list); 

     phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " ASC"); 
//  retrieves contact information 
     LoadContact loadContact = new LoadContact(); 
     loadContact.execute(); 

//  let's set up our search box, 
     search = (SearchView) findViewById(R.id.searchView); 

     //*** setOnQueryTextListener *** 
     search.setOnQueryTextListener(new SearchView.OnQueryTextListener() { 

      @Override 
      public boolean onQueryTextSubmit(String query) { 
       // TODO Auto-generated method stub 

       return false; 
      } 

      @Override 
      public boolean onQueryTextChange(String newText) { 
       // when the text in searchView changes, call the filter function 
       adapter.filter(newText); 
       return false; 
      } 
     }); 
    } 

    // Load data on background 
    class LoadContact extends AsyncTask<Void, Void, Void> { 
     @Override 
     protected void onPreExecute() { 
      super.onPreExecute(); 

     } 

     @Override 
     protected Void doInBackground(Void... voids) { 
      // Get Contact list from Phone 


      if (phones != null) { 
       Log.e("count", "" + phones.getCount()); 
       if (phones.getCount() == 0) { 
        Toast.makeText(MainActivity.this, "No contacts in your contact list.", Toast.LENGTH_LONG).show(); 
       } 

       while (phones.moveToNext()) { 
        Bitmap bit_thumb = null; 
        String id = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.CONTACT_ID)); 
        String name = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME)); 
        String phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)); 
        String EmailAddr = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA2)); 
        String image_thumb = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.PHOTO_THUMBNAIL_URI)); 
        try { 
         if (image_thumb != null) { 
          bit_thumb = MediaStore.Images.Media.getBitmap(resolver, Uri.parse(image_thumb)); 
         } else { 
          Log.e("No Image Thumb", "--------------"); 
         } 
        } catch (IOException e) { 
         e.printStackTrace(); 
        } 
//what's happening here? For every user in the phonebook, show an image, the name, number, an id and maybe a checkbox? 
        SelectUser selectUser = new SelectUser(); 
        selectUser.setThumb(bit_thumb); 
        selectUser.setName(name); 
        selectUser.setPhone(phoneNumber); 
        selectUser.setEmail(id); 
        selectUser.setCheckedBox(false); 
        selectUsers.add(selectUser); 
       } 
      } else { 
       Log.e("Cursor close 1", "----------------"); 
      } 
      //phones.close(); 
      return null; 
     } 

     @Override 
//  when DoInBackground is finished, when we have our phone number, name etc... display the results in our listview. 
     protected void onPostExecute(Void aVoid) { 
      super.onPostExecute(aVoid); 
      adapter = new SelectUserAdapter(selectUsers, MainActivity.this); 
      listView.setAdapter(adapter); 

      // Select item on listclick 
      listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
       @Override 
       public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) { 

        Log.e("search", "here---------------- listener"); 

        SelectUser data = selectUsers.get(i); 
       } 
      }); 

      listView.setFastScrollEnabled(true); 
     } 
    } 

    @Override 
    protected void onStop() { 
     super.onStop(); 
     phones.close(); 
    } 
} 

SelectUserAdapter.java

package com.example.chris.contactlistcustomlistview; 

     import android.annotation.TargetApi; 
     import android.content.Context; 
     import android.graphics.Bitmap; 
     import android.graphics.BitmapFactory; 
     import android.os.Build; 
     import android.util.Log; 
     import android.view.LayoutInflater; 
     import android.view.View; 
     import android.view.ViewGroup; 
     import android.widget.BaseAdapter; 
     import android.widget.CheckBox; 
     import android.widget.ImageView; 
     import android.widget.TextView; 

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

/** 
* Created by Chris on 25/03/2016. 
*/ 

public class SelectUserAdapter extends BaseAdapter { 

    public List<SelectUser> _data; 
    private ArrayList<SelectUser> arraylist; 
    Context _c; 
    ViewHolder v; 
// RoundImage roundedImage; 

    public SelectUserAdapter(List<SelectUser> selectUsers, Context context) { 
     _data = selectUsers; 
     _c = context; 
     this.arraylist = new ArrayList<SelectUser>(); 
     this.arraylist.addAll(_data); 
    } 

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

    @Override 
    public Object getItem(int i) { 
     return _data.get(i); 
    } 

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

    @TargetApi(Build.VERSION_CODES.LOLLIPOP) 
    @Override 
    public View getView(int i, View convertView, ViewGroup viewGroup) { 
     View view = convertView; 
     if (view == null) { 
      LayoutInflater li = (LayoutInflater) _c.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      view = li.inflate(R.layout.inflate_listview, null); 
      Log.e("Inside", "here--------------------------- In view1"); 
     } else { 
      view = convertView; 
      Log.e("Inside", "here--------------------------- In view2"); 
     } 

//  we are making a cell format in the ListView, which will contain info like 
//  number, name... the layout for this, with name, no, pic etc... 
//  is contained in inflate_listview.xml, which describes how each cell data 
//  loads into the listview 
     v = new ViewHolder(); 

//  So, for example, title is cast to the name id, in activity main, 
//  phone is cast to the id called no etc 
     v.title = (TextView) view.findViewById(R.id.name); 
     v.check = (CheckBox) view.findViewById(R.id.check); 
     v.phone = (TextView) view.findViewById(R.id.no); 
//  v.imageView = (ImageView) view.findViewById(R.id.pic); 

//  for each new cell with title, name, number etc... 
// 
     final SelectUser data = (SelectUser) _data.get(i); 
     v.title.setText(data.getName()); 
     v.check.setChecked(data.getCheckedBox()); 
     v.phone.setText(data.getPhone()); 



     Log.e("Image Thumb", "--------------" + data.getThumb()); 

     view.setTag(data); 
     return view; 
    } 

    // Filter Class 
    public void filter(String charText) { 
     charText = charText.toLowerCase(Locale.getDefault()); 
//  _data is our list of Users, or contacts 
     _data.clear(); 
//  If there is nothing in the searchbox, 
//  then show all the contacts 
     if (charText.length() == 0) { 
      _data.addAll(arraylist); 
//   or else.... 
     } else { 
      for (SelectUser wp : arraylist) { 
//    If a contact's phone number matches the input thus far that the user 
//    is filtering for, then include it in the listview. 
       if (wp.getPhone().toLowerCase(Locale.getDefault()) 
         .contains(charText)) { 
        _data.add(wp); 
       } 
      } 
     } 
     notifyDataSetChanged(); 
    } 
    static class ViewHolder { 
//  In each cell in the listview show a name and phone number 
//  ImageView imageView; 
     TextView title, phone; 
     CheckBox check; 
    } 
} 

Answer 1

public class MainActivity extends Activity { 


    Cursor cursor; 
    ListView mainListView; 
    ArrayList hashMapsArrayList; 

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

     if (cursor != null) { 
      cursor.moveToFirst();} 
     try { 

      cursor = getApplicationContext().getContentResolver() 
        .query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null); 
      int Idx = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.CONTACT_ID); 
      int nameIdx = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME); 

      int phoneNumberIdx = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER); 
      int photoIdIdx = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.PHOTO_THUMBNAIL_URI); 
      cursor.moveToFirst(); 


      Set<String> ids = new HashSet<>(); 
      do { 
       System.out.println("=====>in while"); 
       String contactid=cursor.getString(Idx); 
       if (!ids.contains(contactid)) { 
        ids.add(contactid); 
        HashMap<String, String> hashMap = new HashMap<String, String>(); 
        String name = cursor.getString(nameIdx); 
        String phoneNumber = cursor.getString(phoneNumberIdx); 
        String image = cursor.getString(photoIdIdx); 
        System.out.println("Id--->"+contactid+"Name--->"+name); 
        System.out.println("Id--->"+contactid+"Number--->"+phoneNumber); 

        if (!phoneNumber.contains("*")) { 
         hashMap.put("contactid", "" + contactid); 
         hashMap.put("name", "" + name); 
         hashMap.put("phoneNumber", "" + phoneNumber); 
         hashMap.put("image", "" + image); 
         // hashMap.put("email", ""+email); 
         if (hashMapsArrayList != null) { 
          hashMapsArrayList.add(hashMap);} 
//     hashMapsArrayList.add(hashMap); 
        } 
       } 

      } while (cursor.moveToNext()); 


     } catch (Exception e) { 
      e.printStackTrace(); 
     } finally { 
      if (cursor != null) { 
       cursor.close(); 
      } 
     } 
} 
} 

Answer 2

は、私はそれがこの問題を解決することを確認していない、これを試してみてください。

if (selectUsers.indexOf(selectUser) == -1) { 
    selectUsers.add(selectUser); 
    }