Android实现下载图片，视频，APK功能等功能

来源：互联网发布：大路口车流量数据编辑：程序博客网时间：2024/06/05 10:02

public void downPhotos(String url, String path, String photosName) throws IOException {    long fileSize;    File out = new File(path, photosName + ".jpg");    URL myURL = new URL(url);    URLConnection conn = myURL.openConnection();    conn.connect();    InputStream is = conn.getInputStream();    fileSize = conn.getContentLength();    if (fileSize <= 0)        throw new RuntimeException("can not know the file`s size");    if (is == null)        throw new RuntimeException("stream is null");    FileOutputStream fos = new FileOutputStream(out);    byte buf[] = new byte[1024];    do {        // 循环读取        int numread = is.read(buf);        if (numread == -1) {            break;        }        fos.write(buf, 0, numread);    } while (true);    try {        is.close();    } catch (Exception ex) {        ex.printStackTrace();    }}

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