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Questions tagged [writetofile]

for questions concerning the writeToFile method, part of the NSData class in OS X and iOS

This tag should be used for questions that relate to the use of one or more of the various writeToFile methods, which are provided by the NSData class in both the Mac OS X and iOS APIs.

The Apple developer documentation for the NSData class is available online here.

370 questions
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App crashing when attempting to Write to .json

EDITED So I am trying to write a code that writes to a .Json but my app keeps crashing on me. I follow serval tutorials on what to do but non of them help. My code is as Follows: AndroidManifest:
Heinrich Espach
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2 answers

Creating A Password Manger In Python But It Is Not Writing To File

I am trying to create a password manager in python with tkinter. But when I try to write the account name, username and password it doesn't work. I am using a text box with StringVar to get the info from the textboxes. I don't know if the bug is in…
user10244651
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1 answer

How can I call this Method In my ButtonActionPerformed

Background: I have about 4 buttons and I would like to write to file every time the button is clicked. So far when I writeToFile(); like in the deleteStudentActionPerformed method it deletes all of the students from all of the…
D_DOT
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1 answer

Not writing (or even opening file) in php

I read many of the other questions on this site revolving around this error, none of which were able to help me, The below php code takes the data input from the html file and sends it to the php file, after printing "Hello Name" on the page, it…
J. Doe
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1 answer

addPerson (adds to an array) method isnt working, what's wrong?

I'm a student working on a project, and I have a method takes a Person, adds it to the array (Admits[]) and writes the array to file. The method currently does not do this, as the numSoFar value does not increase and the person is not saved to the…
Brenna
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2 answers

-[__NSDictionaryI isNSString__]: message sent to deallocated instance

I am stuck on this for over a week now, and apparently nobody has reported this issue before on stackoverflow. Please read my description carefully before referring me to other postings, because I have read them all and none of them has my answer. I…
Kaveh Vejdani
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2 answers

Proper way to giving name to file when [NSData writeToFile:] used

I'm using that code to save downloaded videos from internet to application document folder: NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths…
woheras
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3 answers

iphone-Array Won't Add NSNumber

I am using xcode 4 to compile this application. I am building a space game. To store my highscore values (which in this case is represented by an int, _totalSeconds), I made an array which I write to a file. Whenever the character "dies", his…
user2607954
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2 answers

Unable to create Plist of NSStrings

hi am trying to create a plist of my calculations but it turns out the list is empty....pls help here is my code.is there any othe way to write strings to a file other than this... -(float)calculate { if(!self.operatorLabel.text.length) …
Raon
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2 answers

cannot write in the file

good day guys, im creating a program that will write the data to a text file. the data is coming from an array list, it is a data that is solved from the array list e.g : public double getGincome(){ gincome=rpd*dwork; return…
NewInJava
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1 answer

How to write a list to a text file. Write 50 items per line

I am working on a program where I read data from a file, store that data in a list and write that data to a new file in a special format. I have created the method to read the original file and store it in a list. The file I read from is a list of…
user3294360
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1 answer

How to write some amounts to a File?

I'm doing this program for a class; I have a listbox with 4 choices that are counted each time they're selected,and i'm supposed to write out the results to an out.File so that they can then be retrieved and displayed when asked to. Here's an…
user3380748
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1 answer

Array Object at Index Error

So, I have an array which I retrieve from a file named "choice". My problem is that every time I go to the highscore page, it only displays the highest high score. Also, it only keeps two of the elements from array when I load it next time. Here is…
user2607954
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1 answer

objective c : Cannot overwrite file with array

I'm new to objective c and the problem I'm having is that my "scores.xml" is not overwritten once I try to save it. I have imported the "scores.xml" to my project, but it does not get overwritten once I try to do so. What am I doing wrong? Does…
Rokas
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1 answer

Issues printing to a CSV in Python

For work I've made a very very basic UI that when a btn is clicked, it generates users using a web service. I want to be able to write these user details into a csv, but I'm struggling. Could someone please help? I've commented in my code where the…
MurrackCarn
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