QML 提示 “Binding loop detected for property”错误

[weixin_39418778]

相关代码如下：
在qml文件有如下定义
property string btA_titlename: btCtrl.btSongTitleName

c++文件里面对btCtrl.btSongTitleName有如下定义：

Q_PROPERTY(QString btSongTitleName READ getSongTitleName NOTIFY btSongInfoChanged);
QString CBTAudioLib::getSongTitleName()
{
QString title = (QString("%1")
.arg(btAudioTagInfo.Title, 0, 10)
);
title = BtAudioLib_tag_guolv(title);
return title;
}

总是报：“”QML BTA_Audio: Binding loop detected for property "btA_titlename"

求大神帮助一下，谢谢了