Question

I want to download image from url and store in sdcard’s folder.
If folder is not exist make folder and save it.
But its giving following exception:

java.io.FileNotFoundException: /mnt/sdcard (Is a directory)

Answer 1

The message is clear. /mnt/sdcard is a directory not a file. You need to create FileOutputStream that writes to a non-directory path.

For example:

//Setting up cache directory to store the image
File cacheDir=new File(context.getCacheDir(),"cache_folder");

// Check if cache folder exists, otherwise create folder. 
if(!cacheDir.exists())cacheDir.mkdirs();

// Setting up file to write the image to. 
File f=new File(cacheDir, "img.png");

// Open InputStream to download the image. 
InputStream is=new URL(url).openStream();

// Set up OutputStream to write data into image file. 
OutputStream os = new FileOutputStream(f);

HelperUtil.CopyStream(is, os);

...



/**
 * Copy all data from InputStream and write using OutputStream
 * @param is InputStream
 * @param os OutputStream
 */
public static void CopyStream(InputStream is, OutputStream os)
{
    final int buffer_size=1024;
    try
    {
        byte[] bytes=new byte[buffer_size];
        for(;;)
        {
          int count=is.read(bytes, 0, buffer_size);
          if(count==-1)
              break;
          os.write(bytes, 0, count);
        }
    }
    catch(Exception ex){}
}