There's another problem too, which is that if the byte array is very large (100MB+), which could easily happen with video files, Android is going to throw an OutOfMemoryError. So there's a broader question: how can I get from a URI to a byte array to add to a multipart message, without crashing Android?
On Mar 13, 11:23 am, Anna PS <annapowellsm...@googlemail.com> wrote: > Hi all > > I want to get from an Android Uri (of the kind returned by > onActivityResult) to a simple byte array, in order to upload a file as > part of a multipart message. Can anyone provide an example of how to > get from a Uri to a byte[] array? > > My current code (below) is almost there, but falls down because I > can't work out the LENGTH_OF_FILE from an InputStream. I'd have the > same problem using ByteArrayOutputStream. > > I've been looking at the docs on Content > Providershttp://developer.android.com/guide/topics/providers/content-providers... > and wondering if getBlob() is the method I need, but it says it only > applies to small amounts of data (<50KB) and I need to handle larger > files. > > thanks! > > Current code (doesn't work): > > public static byte[] getBytesFromFile(ContentResolver cR, String > fileUriString) throws IOException { > Uri tempuri = Uri.parse(fileUriString); > InputStream is = cR.openInputStream(tempuri); > byte[] b3 = new byte[LENGTH_OF_FILE]; > is.read(b3); -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
