简单的媒体控件引用，可以录制和播放wav格式文件。其中的创新点是，含有资源文件进行二进制读取并写成基本的音频文件，再利用进行录音。-Simple media controls reference, you can record and play wav files. One innovation is that the binary file containing resources to read and write basic audio files, re-use of sound recordings.