Android 联系人查询

/**
    * 姓名中含有特殊字符的查找不到
    * */
    public String getContactID(String name) {
        String id = "0";


        Uri uri = ContactsContract.Contacts.CONTENT_URI;
        String [] projection = new String[]{ContactsContract.Contacts._ID};
        String selection = ContactsContract.Contacts.DISPLAY_NAME_ALTERNATIVE + "='" + name + "'";

        Cursor cursor = contentResolver.query(uri, projection, selection, null, null);
        if(cursor.moveToNext()) {
            id = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));
        }
        return id;
    }

    /**
     * 查询的数据为原始数据（姓名含有特殊未经处理）
     * */
    public String getContactId(String contactName) {


        //读取通讯录的全部的联系人
        //需要先在raw_contact表中遍历id，并根据id到data表中获取数据

        Uri uri = Uri.parse("content://com.android.contacts/contacts");

        Cursor cursor = contentResolver.query(uri, new String[]{ContactsContract.Data._ID}, null, null, null);

        if (cursor == null) {
            return null;
        }

        while(cursor.moveToNext()) {

            String id = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));//联系人ID

            //如果要获得data表中某个id对应的数据
            uri = Uri.parse("content://com.android.contacts/contacts/"+id+"/data");

            Cursor cursor2 = contentResolver.query(uri, new String[]{"data1"}, "data1='" + contactName + "'",null, null);
            if (cursor2 == null) {
                return null;
            }
            while(cursor2.moveToNext()){
                for (int i = 0; i <cursor2.getColumnCount(); i++) {

                    String type = cursor2.getColumnName(i);
                    try {
                        String val = cursor2.getString(i);

                        if (val != null && val instanceof  String && val.equals(contactName)) {
//                                Log.d(TAG, "" + type + ": " + val);
                            return id;
                        }

                    } catch (Exception e) {
//                       e.printStackTrace();
                    }

                }
            }

        }

        return null;
    }

    /**
     * 通过关键字搜索联系人，关键字不限于姓名、电话号码
     * */
    public String searchContactByKeyword(String keyword) {

        String id = null;

        Uri uri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_FILTER_URI, keyword);

        //  Uri uri2 = Uri.withAppendedPath(ContactsContract.PhoneLookup.CONTENT_FILTER_URI, phoneNumber); 根据电话号码查找联系人

        String[] projection = new String[]{ContactsContract.Contacts._ID};
        Cursor cursor = contentResolver.query(uri, projection, null, null, null);

        if (cursor == null) {
            return null;
        }

        if (cursor.moveToFirst()) {
            id = cursor.getString(cursor.getColumnIndexOrThrow(ContactsContract.Contacts._ID));
        }

        return id;
    }