获取手机联系人

1.获取手机联系人列表

private String[] getContacts() {
        //联系人的Uri，也就是content://com.android.contacts/contacts
        Uri uri = ContactsContract.Contacts.CONTENT_URI;
        //指定获取_id和display_name两列数据，display_name即为姓名
        String[] projection = new String[]{
                ContactsContract.Contacts._ID,
                ContactsContract.Contacts.DISPLAY_NAME
        };
        //根据Uri查询相应的ContentProvider，cursor为获取到的数据集
        Cursor cursor = this.getContentResolver().query(uri, projection, null, null, null);
        for (int i = 0; i < cursor.getColumnCount(); i++) {
            Log.d("MainActivity", cursor.getColumnName(i));
        }
        String[] arr = new String[cursor.getCount()];
        int i = 0;
        if (cursor != null && cursor.moveToFirst()) {
            do {
                Long id = cursor.getLong(0);
                //获取姓名
                String name = cursor.getString(1);
                //指定获取NUMBER这一列数据
                String[] phoneProjection = new String[]{
                        ContactsContract.CommonDataKinds.Phone.NUMBER
                };
                arr[i] = id + " , 姓名：" + name;

                //根据联系人的ID获取此人的电话号码
                Cursor phonesCusor = this.getContentResolver().query(
                        ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                        phoneProjection,
                        ContactsContract.CommonDataKinds.Phone.CONTACT_ID + "=" + id,
                        null,
                        null);

                //因为每个联系人可能有多个电话号码，所以需要遍历
                if (phonesCusor != null && phonesCusor.moveToFirst()) {
                    do {
                        String num = phonesCusor.getString(0);
                        arr[i] += " , 电话号码：" + num;
                    } while (phonesCusor.moveToNext());
                }
                i++;
            } while (cursor.moveToNext());
        }
        return arr;
    }

2. 跳转到系统联系人页面, 选择并带回联系人

建议这种方式, 因为部分7.0 与8.0 手机不会支持罗列所有联系人的形式, 返回后无法查询到联系人电话号码

Uri uri = Uri.parse("content://contacts/people"); // 罗列所有联系人的形式
                        Uri uri2 = ContactsContract.CommonDataKinds.Phone.CONTENT_URI; // 所有电话号罗出来的形式
                        Intent intent = new Intent(Intent.ACTION_PICK, uri2);
                        activity.startActivityForResult(intent, 0);

 @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == 0) {
            if (data == null) {
                return;
            }
            //处理返回的data,获取选择的联系人信息
            Uri uri = data.getData();
            // 选择手机号
            getPhoneContacts(uri);
        }
    }

@Nullable
    private void getPhoneContacts(Uri uri) {
        contact = new String[2];
        //得到ContentResolver对象
        ContentResolver cr = getContentResolver();
        //取得电话本中开始一项的光标
        Cursor cursor = cr.query(uri, null, null, null, null);
        if (cursor != null) {
            cursor.moveToFirst();
            try {
                //取得联系人姓名
                int nameFieldColumnIndex = cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
                int numberFieldColumnIndex = cursor.getColumnIndex(ContactsContract.Data.DATA1);
                if (BuildConfig.DEBUG)
                    Log.d("SimpleWebActivity", "nameFieldColumnIndex:" + nameFieldColumnIndex);


                contact[0] = cursor.getString(nameFieldColumnIndex);
                contact[1] = cursor.getString(numberFieldColumnIndex);
            } catch (Exception e) {
                // 如果用户在选择界面拒绝了第一次的权限申请
                return;
            }
            cursor.close();
        } else {
            return;
        }
        people(contact[0], contact[1]);
    }