URL - Android中图像文件的FileNotFoundException [英] URL - FileNotFoundException for image file in Android

问题描述

我试图从特定的URL获取图像，但它会引发 FileNotFoundException 。如果我尝试从我的浏览器打开url，我可以看到图像。请帮忙。以下是我的代码谢谢。

I'm trying to get a image from particular URL but it throwsFileNotFoundException. If I try to open the url from my browser, i can see the images. Please help. Below is my code. Thanks.

String fileURL = "http://sposter.smartag.my/images/KFC_Voucher.jpg";
String FILENAME = "caldophilus.jpg";
URL u = new URL(fileURL);
HttpURLConnection c = (HttpURLConnection) u.openConnection();
c.setRequestMethod("GET");
c.setDoOutput(true);
c.connect();
File root = Environment.getExternalStorageDirectory();
FileOutputStream f = new FileOutputStream(new File(root, FILENAME));
InputStream x=c.getInputStream();
int size=x.available();
byte b[]= new byte[size];
x.read(b);
f.write(b);
f.flush();
f.close();

推荐答案

我尝试这个，它的工作正常。谢谢。

i try this and its work fine. Thanks.

URL url = new URL(fileURL);
URLConnection conexion = url.openConnection();
conexion.connect();
int lenghtOfFile = conexion.getContentLength();
Log.d("ANDRO_ASYNC", "Lenght of file: " + lenghtOfFile);
InputStream input = new BufferedInputStream(url.openStream());
OutputStream output = new FileOutputStream("/sdcard/caldophilus.jpg");
byte data[] = new byte[1024];
long total = 0;
while ((count = input.read(data)) != -1) {
total += count;
output.write(data, 0, count);
}
output.flush();
output.close();
input.close();

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