qt 怎么调用jar包

qt for android 怎么调用jar包，这么调用不行，是我哪一步做错了呢

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// 调用构造函数
    QAndroidJniObject testObj("test/Test", "(I)V", 10);
    if(testObj.isValid()){
        QMessageBox::about(NULL, "testObj", "is valid");

        // 调用成员函数
        jint fun2Ret = testObj.callMethod("fun2", "()I");
        QString str2 = QString("%1").arg(fun2Ret);
        QMessageBox::about(NULL, "fun2Ret", str2);

        // 调用静态函数
        jint fun1Ret = QAndroidJniObject::callStaticMethod("test/Test", "fun1", "()I");
        str2 = QString("%1").arg(fun1Ret);
        QMessageBox::about(NULL, "fun1Ret", str2);
    }
    else {
        QMessageBox::about(NULL, "testObj", "is no vaild");
    }

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你文件名搞错了，libs

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