1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
public static void downFile(final String url){
new Thread(){
public void run(){
FileOutputStream s=null;
try{
InputStream input=null;
URLConnection httpUrlConnection= new URL(url).openConnection();
//int contentLength = httpUrlConnection.getContentLength();
input =httpUrlConnection.getInputStream();
File file = new File("C:\\Users\\Administrator\\Desktop\\Apknew.apk");
//如果目标文件已经存在,则删除,
android下文件下载
,电脑资料
《android下文件下载》(http://meiwen.anslib.com)。产生覆盖旧文件的效果if(file.exists())
{
file.delete();
}
s = new FileOutputStream(file);
byte[] buffer = new byte[4*1024];
// 读取到的数据长度
int len;
while((len=input.read(buffer)) != -1){
os.write(buffer,0,len); //这里不能写成os.write(buffer)
}
os.flush();
os.close();
input.close();//这里一定不能忘记关闭输入流
//Log.v("cmd", "文件下载完毕,路径为:"+file.getAbsolutePath());
//update();
System.out.println("下载完毕");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
}
}
}.start();
}