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运行有问题或需要源码请点赞关注收藏后评论区留言~~~一、从图片地址获取图像数据网络上的图片一般都不太大，动用DownloadManager下载图片有点大材小用，如果仅仅是在界面上显示网络图片，不涉及复杂处理的话，其实通过HttpURLConnection就能快速的获取网络图像，因为位图工厂Bitma...

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Android Studio App开发之下载管理器DownloadManager中显示、轮询下载进度、利用POST上传文件讲解及实战（附源码）

运行有问题或需要源码请点赞关注收藏后评论区留言~~~一、在通知栏显示下载进度利用GET方式读取数据有很多缺点比如1：无法端点续传一旦中途失败只能重新获取2：不是真正意义上的下载操作无法设置参数3：下载过程中无法在界面上上展示下载状态因为下载功能比较常用而且业务功能比较单一，所以Android专门...

Android Studio App开发之网络通信中使用POST方式调用HTTP接口实现应用更新功能（附源码超详细必看）

运行有问题或需要源码请点赞关注收藏后评论区留言~~~一、POST方式调用HTTP接口POST方式把接口地址与请求报文分开，允许使用自定义的报文格式，由此扩大了该方式的应用场景。POST请求与GET请求主要有三处编码差异1：在调用setRequestMethod方法时请求方式填POST而...

Android Studio App开发之网络通信中使用GET方式调用HTTP接口的讲解及实战（附源码超详细必看）

运行有问题或需要源码请点赞关注收藏后评论区留言~~~一、GET方式调用HTTP接口Android开发采用Java作为编程语言，也就沿用了Java的HTTP连接工具HttpURLConnection，不管是访问HTTP接口还是上传或下载文件都是用它来实现。它有几个关键点1：HttpURLConnect...

Android Studio App开发之网络通信中移动数据格式JSON的讲解以及实战（附源码超详细必看）

运行有问题或需要源码请点赞关注收藏后评论区留言~~~一、移动数据格式JSON网络通信的交互数据格式有两大类，分别是JSON和XML，前者短小精悍，后者表现力丰富，对于App来说，基本采用JSON格式与服务器通信。一是手机流量很贵，表达同样的信息，JSON串比XML串短很多，在节省流量方面有优势，另一...

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运行有问题或需要源码请点赞关注收藏后评论区留言~~~一、使用摄像机录制视频与音频类似，通过系统摄像机可以很方便的录制视频，只要指定摄像动作为MediaStore.ACTION_VIDEO_CAPTURE即可视频录制完成之后，最好能够预览视频的摄制画面，所以代码中调用了getOneFrame方法获取视...

Android Studio App开发中使用录音机、MediaRecorder录制音频和MediaPlayer播放音频讲解及实战（附源码）

运行有问题或需要源码请点赞关注收藏后评论区留言~~~一、使用录音机录制音频手机有自带的系统相机，也有自带的系统录音机，只要在调用startActivityForResult之前指定该动作，就会自动跳转到系统的录音机界面效果如下当然这里最好连接真机测试模拟机好像没有录音机总之调试有点麻烦代码如...

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