Java Development

[shaina123]

i am downloading & saving media files (videos/pdf)  using following code. The issue is its working fine for small size mb files (1 mb to 18 mb) but for some files of 60 mb it stuck during downloading. or sometimes downloading not start. Is thr some size limit for byte array coz i am initializing it with lenght of file . this len contains bytes to read

int

len = (int) hc.getLength();

byte[] data = newbyte[len];

if(len > 0) {

intactual = 0;

intbytesread = 0;

while((bytesread != len) && (actual != -1)) {

actual =

dis.read(data, bytesread, len - bytesread);

bytesread += actual;

percentage = bytesread * 100;

percentage = percentage / len;

int p = (int) percentage;

ProgressIndicatorScreen.

this.model.setValue(p);

}

}

[simon_hain · Accepted solution]

i don't think there is a size limit for a byte array, it is most likely a connection issue. downloading large files has been difficult forever.

[shaina123]

but for 69 mb file the process is not started even not completed 1 percent..

[simon_hain]

check if the reported length is a valid value, sometimes the server reports -1 or other nonsense despite a large file being there.

[shaina123]

yes length is valid value.carrying no of bytes equal to 69 mb 

[shaina123]

plz tell me is thr someother built in api instead of downloading byte by btye data ?

[simon_hain]

http://www.blackberry.com/developers/docs/6.0.0api/net/rim/device/api/io/IOUtilities.html#streamToBy...

i don't think it'll solve the problem, but that's the method i usually use

[shaina123]

any example to use it plz. or if i read data in chunks then i think it will sortou .

this example http://supportforums.blackberry.com/t5/Java-Development/Download-large-files-using-the-BlackBerry-Mo... using bufferedinputstream but its not supportable (no api)

[peter_strange]

I don't understand why the KB article you have referenced is not useful for you.

In your case with a 69 Mb file, you should definitely download it in chunks and store it on SD Card while doing so, and I think the KB article you have referenced is perfect for doing that. 

[shaina123]

its using BufferedInputStream  but no api exists agains it. I didnt find any api to import for using this function