I wrote an app that writes textfield data to a text file on the device memory card. I can also read the text file and split the various substrings back into the correct textfields. Now i want to know if its possible to change the data in one of the textfields and then to update the string in the text file to only update the changed substring data, i.e. the original string in the text file looks like this:
Now i want to update the string in the text file to look like this:
Please can anyone help me with some example code if this is possible??