Google glass GDK

在做一个网络播放器，需要下载MP3文件，so ~

    public static void downMusic(){
        try {
            URL downUrl = new URL("http://文件地址");
            HttpURLConnection conn = (HttpURLConnection) downUrl.openConnection();
            InputStream istream = conn.getInputStream();
            String file_name = "/sdcard/保存文件名";
            File file = new File(file_name);
            if(!file.exists()){
                file.createNewFile();
                OutputStream output = new FileOutputStream(file);
                byte[] buffer = new byte[1024 * 4];
                while(istream.read(buffer) != -1){
                    output.write(buffer);
                }
                output.flush();
                output.close();
                istream.close();
            }
        } catch (MalformedURLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
    }

当然，要想愉快地使用网络和写文件，还得添加权限：

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

最后记得，不要在主线程中使用哦～～用

new Thread(new Runnable(){
//你懂的
}).start();