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在安卓中获取联系人非常缓慢。

androidcontactsandroid-contacts
7
我编写了一段代码，从Android的Contacts中获取联系人姓名、电话号码和头像，并将其显示在listview上。虽然可以正常工作，但加载时间较长。我已经尝试在代码的某些部分使用多线程，但加载时间并没有减少。
下面是onCreate()方法:
protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);

 lvDetail = (ListView) findViewById(R.id.listView1);

 fetchcontacts();

 lvDetail.setAdapter(new MyBaseAdapter(context, myList));
 }

这里是获取联系人的代码：

  private void fetchcontacts() {

        // TODO Auto-generated method stub
        Cursor cursor = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null,
                null, null, ContactsContract.Contacts.DISPLAY_NAME + " ASC");
                int count = cursor.getCount();
                if (count > 0) {
                     Toast.makeText(context, "count >0", Toast.LENGTH_SHORT).show();
                    while (cursor.moveToNext()) {
                        String columnId = ContactsContract.Contacts._ID;
                        int cursorIndex = cursor.getColumnIndex(columnId);
                        String id = cursor.getString(cursorIndex);

                      name = cursor.getString(cursor
                .getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));


                      Toast.makeText(context, "Toast 1", Toast.LENGTH_SHORT).show();




                        int numCount = Integer.parseInt(cursor.getString(cursor
                            .getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER)));
                        if (numCount > 0) {
                             Toast.makeText(context, "Toast 2", Toast.LENGTH_SHORT).show();
                            Cursor phoneCursor = getContentResolver().query(
                ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,
                                CommonDataKinds.Phone.CONTACT_ID+" = ?", new String[] { id
                }, ContactsContract.Contacts.DISPLAY_NAME + " ASC");

                                while (phoneCursor.moveToNext()) {
                                     Toast.makeText(context, "Toast 3", Toast.LENGTH_SHORT).show();
                              phoneNo = phoneCursor.getString(phoneCursor
                .getColumnIndex(ContactsContract.CommonDataKinds.
                Phone.NUMBER));


                                String image_uri = phoneCursor
                                         .getString(phoneCursor
                                         .getColumnIndex(ContactsContract.CommonDataKinds.Phone.PHOTO_URI));

                             if (image_uri != null) {
                                 Toast.makeText(context, "Toast 4", Toast.LENGTH_SHORT).show();
                                 System.out.println(Uri.parse(image_uri));
                                 try {
                              bitmap = MediaStore.Images.Media
                                 .getBitmap(this.getContentResolver(),
                                 Uri.parse(image_uri));
                                // sb.append("\n Image in Bitmap:" + bitmap);
                                // System.out.println(bitmap);

                                 } catch (FileNotFoundException e) {
                                 // TODO Auto-generated catch block
                                 e.printStackTrace();
                                 } catch (IOException e) {
                                 // TODO Auto-generated catch block
                                 e.printStackTrace();
                                 }

                                 }
                             Toast.makeText(context, name, Toast.LENGTH_SHORT).show();

                                    getDataInList(name,phoneNo,bitmap);
                                 name=null;
                                 phoneNo=null;
                                 Drawable myDrawable = getResources().getDrawable(R.drawable.star1);
                                 bitmap = ((BitmapDrawable) myDrawable).getBitmap();



                                    }
                                    phoneCursor.close();
                                }

                            }


                        }

在将所有联系人获取到ArrayList后，listview的setAdapter()函数正在工作。有人知道如何在获取联系人期间显示联系人吗？有示例代码吗？

4个回答
5

1. 仅从 Cursor 中读取所需的列，根据您的要求，您只需要_ID、HAS_PHONE_NUMBER、DISPLAY_NAME，因此更改游标读取。

Cursor cursor = getContentResolver().query(
            ContactsContract.Contacts.CONTENT_URI,
            new String[] { ContactsContract.Contacts._ID,
                    ContactsContract.Contacts.HAS_PHONE_NUMBER,
                    ContactsContract.Contacts.DISPLAY_NAME }, null, null,
            ContactsContract.Contacts.DISPLAY_NAME + " ASC");

2. 不要在用户界面线程中执行耗时操作，请改用 AsyncTask。

注意：这两个步骤可以在一定程度上解决问题，但并不能完全解决。

我已经尝试过这个方法，但是没有发现任何明显的变化。在这里，listview的setAdapter()函数是在将所有联系人获取到ArrayList之后才起作用的。你有关于如何在获取联系人时显示联系人的想法吗？ - irfan
2

我通过减少昂贵的重复查询来实现了它。 我的最佳解决方案是该方法找到每个联系人的所有手机和电子邮件，并将其插入到每个联系人值的列表中。 现在速度像风暴一样快 :)

//contact entity
public class MobileContact {
    public String name;
    public String contact;
    public Type type;

    public MobileContact(String contact, Type type) {
        name = "";
        this.contact = contact;
        this.type = type;
    }

    public MobileContact(String name, String contact, Type type) {
        this.name = name;
        this.contact = contact;
        this.type = type;
    }

    public enum Type {
        EMAIL, PHONE
    }

    @Override
    public String toString() {
        return "MobileContact{" +
                "name='" + name + '\'' +
                ", contact='" + contact + '\'' +
                ", type=" + type +
                '}';
    }
}

// method for collect contacts
public List<MobileContact> getAllContacts() {
        log.debug("get all contacts");
        List<MobileContact> mobileContacts = new ArrayList<>();
        ContentResolver contentResolver = context.getContentResolver();

        // add all mobiles contact
        Cursor phonesCursor = contentResolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, new String[]{ContactsContract.CommonDataKinds.Phone.NUMBER, ContactsContract.CommonDataKinds.Phone.CONTACT_ID}, null, null, null);
        while (phonesCursor != null && phonesCursor.moveToNext()) {
            String contactId = phonesCursor.getString(phonesCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.CONTACT_ID));
            String phoneNumber = phonesCursor.getString(phonesCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)).replace(" ", "");
            mobileContacts.add(new MobileContact(contactId, phoneNumber, MobileContact.Type.PHONE));
        }
        if (phonesCursor != null) {
            phonesCursor.close();
        }

        // add all email contact
        Cursor emailCursor = contentResolver.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, new String[]{ContactsContract.CommonDataKinds.Email.DATA, ContactsContract.CommonDataKinds.Email.CONTACT_ID}, null, null, null);
        while (emailCursor != null && emailCursor.moveToNext()) {
            String contactId = emailCursor.getString(emailCursor.getColumnIndex(ContactsContract.CommonDataKinds.Email.CONTACT_ID));
            String email = emailCursor.getString(emailCursor.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
            mobileContacts.add(new MobileContact(contactId, email, MobileContact.Type.EMAIL));
        }
        if (emailCursor != null) {
            emailCursor.close();
        }

        // get contact name map
        Map<String, String> contactMap = new HashMap<>();
        Cursor contactsCursor = contentResolver.query(ContactsContract.Contacts.CONTENT_URI, new String[]{ContactsContract.Contacts._ID, ContactsContract.Contacts.DISPLAY_NAME, ContactsContract.Contacts.HAS_PHONE_NUMBER}, null, null, ContactsContract.Contacts.DISPLAY_NAME);
        while (contactsCursor != null && contactsCursor.moveToNext()) {
            String contactId = contactsCursor.getString(contactsCursor.getColumnIndex(ContactsContract.Contacts._ID));
            String contactName = contactsCursor.getString(contactsCursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
            contactMap.put(contactId, contactName);
        }
        if (phonesCursor != null) {
            phonesCursor.close();
        }


        // replace contactId to display name
        for (MobileContact mobileContact : mobileContacts) {
            String displayName = contactMap.get(mobileContact.name);
            mobileContact.name = displayName != null ? displayName : "";
        }

        // sort list by name
        Collections.sort(mobileContacts, new Comparator<MobileContact>() {
            @Override
            public int compare(MobileContact c1, MobileContact c2) {
                return c1.name.compareTo(c2.name);
            }
        });

        return mobileContacts;
    }
0

后台任务中使用大尺寸的联系人。 Uri uri = Uri.withAppendedPath(ContactsContract.PhoneLookup.CONTENT_FILTER_URI, Uri.encode(number[i]));

        ContentResolver contentResolver = getContentResolver();

        Cursor search = contentResolver.query(uri, new String[]{ContactsContract.PhoneLookup._ID,
                ContactsContract.PhoneLookup.DISPLAY_NAME}, null, null, null);

        try {
            if (search != null && search.getCount() > 0) {
                search.moveToNext();
                name = search.getString(search.getColumnIndex(ContactsContract.Data.DISPLAY_NAME));
                id = search.getString(search.getColumnIndex(ContactsContract.Data._ID));
                System.out.println("name" + name + "id" + id);
           /* tv_name.setText(name);
            tv_id.setText(id);
            tv_phone.setText(number);*/
            }
        } finally {
            if (search != null) {
                search.close();
            }
        }
0

目前为止，这是我最快的方法。

ContentResolver cr = mContext.getContentResolver(); Cursor cursor= mContext.getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, PROJECTION, "HAS_PHONE_NUMBER <> 0", null, null); if (cursor!= null) { final int displayNameIndex = cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME); final int numberIndex = cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER); final int idIndex= cursor.getColumnIndex(ContactsContract.Contacts._ID); String displayName, number = null, idValue; while (cursor.moveToNext()) {
   displayName = cursor.getString(displayNameIndex);
   idValue= cursor.getString(idIndex);
   Cursor phones  = mContext.getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, "contact_id = '" + idValue + "'", null, null);
   phones.moveToFirst();
   try {
   number = phones.getString(phones.getColumnIndex("data1"));
   }
   catch (CursorIndexOutOfBoundsException e)
   {`
   }
   phones.close();
   userList.add(new ContactModel(displayName , number , null , }
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