项目3:基于嵌入式QT的车载影音系统(附加天气和简易定位功能)
项目描述
本次项目是基于Qt环境进行开发设计一个基于嵌入式QT的车载影音系统应用,通过交叉编译Qt程序,并在GEC6818开发板上运行,主要通过Qt基础控件、多窗体、样式表、Qt多进程、Http请求、API接口调用、JSON数据解析、Mplayer以及对QStringList的使用,编程实现设计了嵌入式GUI界面,同时实现天气预报、音视频播放以及简易定位的地图功能。
项目需求
1.天气界面:通过HTTP 请求 并解析JSON 数据,获取未来5天的天气情况并显示到界面中;
2.视频播放界面:利用 QT 中的进程调用 mplayer 播放器 ,播放视频,实现视频基本操作;
3.音乐界面:利用 QT 中的进程调用 mplayer 播放器 ,播放音乐,实现音乐基本操作,同时匹配歌词文件,实现歌词同步滚动;
4.地图显示 :通过百度地图API接口,显示当前地区的静态图,全景图,路况。
环境搭建
开发平台
Window、Linux
运行平台
ARM
开发工具
交叉编译链、QCreater
编程实现
使用QCreater进行ui设计、编写代码,利用 Qt/Embedded 中的qmake生成Makefile管理工程目录,利用arm-linux-gcc交叉编译,再通过Linux平台的SSH服务将编译生成的程序文件传输到开发板中,最后执行。
涉及知识
C\C++、Qt、多进程、HTTP 请求、JSON 数据解析
具体描述
主窗体设置背景图,同时布局四个按钮控件,分别导向四个基本功能窗体;天气窗体中,通过调用天气API接口,对返回的数据进行JSON解析,显示在对应布局的控件中;视频窗体中,添加视频文件到列表中并双击播放,可实现播放、暂停、上一个、下一个、音量调节、播放进度调节、删除列表项等操作,使用Qlistwidget保存视频名列表;音乐窗体中,添加视频文件到列表中并双击播放,可实现播放、暂停、上一首、下一首、音量调节、播放进度调节、删除列表项等基本操作,同时实现歌曲播放和歌词滚动同步,使用Qlistwidget保存音乐列表和歌词滚动;地图ip窗体,通过调用API接口,返回当前区域的全景图、静态图和路况,显示在对应的布局控件中。
项目总结
在qt环境进行开发是比较不熟的,有时粗心在编写代码时对应ui布局控件出错,造成错误。本次项目主要使用C++进行开发,主要运用了API调用、HTTP请求、JSON数据处理、QT多进程、QFile等知识点,对百度地图的API服务有了了解和熟悉,学习了在ui设计时添加样式表使界面更加美观和多样化。
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基于C++开发的嵌入式QT车载影音系统源码+代码注释+项目详细说明.zip
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基于C++开发的嵌入式QT车载影音系统源码+代码注释+项目详细说明.zip 【项目介绍】 1.天气界面:通过HTTP 请求 并解析JSON 数据,获取未来5天的天气情况并显示到界面中; 2.视频播放界面:利用 QT 中的进程调用 mplayer 播放器 ,播放视频,实现视频基本操作; 3.音乐界面:利用 QT 中的进程调用 mplayer 播放器 ,播放音乐,实现音乐基本操作,同时匹配歌词文件,实现歌词同步滚动; 4.地图显示 :通过百度地图API接口,显示当前地区的静态图,全景图,路况。 环境搭建 开发平台 Window、Linux 运行平台 ARM 开发工具 交叉编译链、QCreater 编程实现 使用QCreater进行ui设计、编写代码,利用 Qt/Embedded 中的qmake生成Makefile管理工程目录,利用arm-linux-gcc交叉编译,再通过Linux平台的SSH服务将编译生成的程序文件传输到开发板中,最后执行。 涉及知识 C\C++、Qt、多进程、HTTP 请求、JSON 数据解析基于C++开发的嵌入式QT车载影音系统源码+代码注释+项目详细说明.z
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