配置环境

安卓开发环境

新建工程

主要步骤

  1. 页面布局

  2. 逻辑实现

做音乐播放器时由于复制播放路径中路径是“/”，会出错误

需要改为“\”

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#include "widget.h"
#include "QSound"
#include <QMediaPlayer>
#include <QAudioOutput>
#include <QUrl>
#include <QMessageBox>
#include <QNetworkReply>
#include <QFile>
#include <QNetworkAccessManager>
#include<QCoreApplication>
#include <QApplication>
Widget::Widget(QWidget *parent)
    : QWidget(parent)
{
    //auto audiooutput = new QAudioOutput(this);
    auto mediaplayer = new QMediaPlayer(this);
    //mediaplayer->setAudioRole(audiooutput);
    mediaplayer->setMedia(QUrl("http://www.ihaoge.net/kw/226278174/antiserver.kuwo.cn/anti.s?rid=MUSIC_226278174&response=res&format=mp3|aac&type=convert_url&br=128kmp3&agent=iPhone&callback=getlink&jpcallback=getlink.mp3"));
    mediaplayer->play();

    /* 获取 URL 链接 */
     QUrl newUrl(QUrl("http://www.ihaoge.net/kw/226278174/antiserver.kuwo.cn/anti.s?rid=MUSIC_226278174&response=res&format=mp3|aac&type=convert_url&br=128kmp3&agent=iPhone&callback=getlink&jpcallback=getlink.mp3"));
     /* 如果下载链接无效，则直接返回 */
     if (!newUrl.isValid()) {
     QMessageBox::information(this, "error", "invalid url");
     return;
     }
     /* 网络请求 */
     QNetworkRequest networkRequest;
     /* 设置下载的地址 */
     networkRequest.setUrl(newUrl);

     QNetworkAccessManager *networkAccessManager = new QNetworkAccessManager;

    /* 网络响应 */
     QNetworkReply *newReply = networkAccessManager->get(networkRequest);
    /* 信号槽连接 */
     connect(newReply, SIGNAL(readyRead()), this, SLOT(readyReadData()));
}

void Widget::readyReadData()
 {

    /* 获取信号发送者 */
    QNetworkReply *reply = (QNetworkReply *)sender();

    QFile yy;
    /* 保存到当前路径，名称为"下载的.jpg" */
    yy.setFileName(QCoreApplication::applicationDirPath() + "/下载的.mp3");

    //auto mediaplayer = new QMediaPlayer(this);
    //mediaplayer->setAudioRole(audiooutput);
    //mediaplayer->setMedia(QUrl::fromLocalFile("/下载的.mp3"));
    //mediaplayer->play();
}

Widget::~Widget()
{

}

效果图

点击中间按钮即可播放音乐