android 查找联系人方法(支持首拼,全拼,英文)

//google源码:public Cursor searchContact(Context ctxt, CharSequence constraint) {Uri uri = Uri.withAppendedPath(ContactsContract.CommonDataKinds.Phone.CONTENT_FILTER_URI, Uri.encode(cons));return ctxt.getContentResolver().query(uri,  PROJECTION_PHONE,  null, //selection,  null,  SORT_ORDER);}