Question

我一直在研究这个，但我无法弄明白。我下载的示例应用中手机中的联系人通常是重复的，如下所示：

我非常确定它与ContactsContract.Contacts有关。我已经阅读了它，但不知道如何在我的代码中实现它。有人可以提供帮助（或者确实是否有其他方式）。我只想让每个联系人列出一次，而不是多次。

根据http://developer.android.com/reference/android/provider/ContactsContract.Contacts.html：

ContactsContract.Contacts
Constants for the contacts table, which contains a record per aggregate of raw contacts representing the same person.

我的项目中有3个java文件，MainActivity，SelectUser和SelectUserAdapter，但我相信MainActivity是与此问题相关的文件。可能特别是这一行：

phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " ASC");

如果您需要更多代码，请告诉我。

这是我的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();
    }
}

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+"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();
            }
        }
}
}

ContactsContract.Contacts问题，重复

1 个答案: