Qt Error : 在子线程中使用QMediaPlayer::setMedia() 设置时一直报错 : ASSERT failure in QCoreApplication.....

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我是靠谱客的博主天真翅膀，最近开发中收集的这篇文章主要介绍Qt Error : 在子线程中使用QMediaPlayer::setMedia() 设置时一直报错 : ASSERT failure in QCoreApplication.....，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

运行时报错： ASSERT failure in QCoreApplication::sendEvent: “Cannot send events to objects owned by a different thread. Current thread 0x0x128c05a8. Receiver ‘’ (of type ‘DirectShowIOReader’) was created in thread 0x0x20c6eeb0”。

有道翻译：在QCoreApplication::sendEvent 中 ASSERT 失败:“不能发送事件到不同线程拥有的对象。” 当前线程0 x0x1f1105a8。接收器"(类型’ directshowiereader ')被创建在线程0x0x20c402e8“

原因：发送事件的对象 与 接收事件的对象 所处线程不同
sendEvent：Current thread 0x0x128c05a8
Receiver was created in thread 0x0x20c6eeb0

解决：通过发信号方式调用槽函数。

#include "SoundPlayer.h"

CSoundPlayer::CSoundPlayer(QObject *parent)
    : QObject(parent)
    , m_bFlag(false)
{
	//     m_pMediaPlayer = new QMediaPlayer(this);  // error
    m_pMediaPlayer = new QMediaPlayer();             // true
    m_pMediaPlayer->setMedia(QUrl("qrc:/sounds/Sounds/voice00.mp3"));

    connect(m_pMediaPlayer,&QMediaPlayer::stateChanged,this,&CSoundPlayer::__onStateChanged);

    connect(&m_Timer,&QTimer::timeout,this,&CSoundPlayer::__onTimerOut);

    connect(this,&CSoundPlayer::__signalSetMedia,m_pMediaPlayer,&QMediaPlayer::setMedia);

    this->moveToThread(&m_Thread);
    m_Timer.moveToThread(&m_Thread);

}

void CSoundPlayer::__setMediaPlayerAudio(QString strAudioUrl)
{
		// m_pMediaPlayer->setMedia(QUrl(strAudioUrl));    // error 直接设置
        emit __signalSetMedia(QUrl(strAudioUrl),NULL);     // ture 通过信号方式进行setMedia()操作
}