It seems that hava some error when deal with the byte array type?
Whenever I want to wirte some thing and call the methods of out stream like:
out = self.activity.openFileOutput((file_name, Android::Content::Context::MODE_PRIVATE)
out.write(data) #data is byte array type
It will throw an erorr " no method with name='size' signature='()I' in class [B "……
Thanks in advance.