The code I have right now looks like this:
NSString *path = #"/Users/student/Desktop/conf.txt"
NSArray *myArray = [NSArray arrayWithObjects:#"hello",#"world",#"etc",nil];
[myArray writeToFile:path atomically:YES];
When I look at the text file it writes it ends up looking like this:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<array>
<string>hello</string>
<string>world</string>
<string>etc</string>
</array>
</plist>
I don't want to display it as an html, I just want a simple text document with the 3 lines saying, "hello world etc".
Does anybody know how I could fix this?
Thanks
If your array contains strings and you wat to write them to file one per line you can first create string with all your words and then write it to file:
NSString *outString = [myArray componentsJoinedByString:#"\n"];
NSError *error = nil;
[outString writeToFile: path atomically:YES encoding:encoding:NSUTF8Encoding error:&error];
But if you want to serialize your array for future use plist format may be more convenient
Related
I have a plist that is structured like this:
<dict>
<key>memos</key>
<array>
<dict>
<key>title</key>
<string>First Memo</string>
<key>content</key>
<string>Testing one two three</string>
<key>category</key>
<string>testing</string>
</dict>
<dict>
<key>title</key>
<string>Test</string>
<key>content</key>
<string>This is a test memo.</string>
<key>category</key>
<string>testing</string>
</dict>
</array>
</dict>
I'm reading it into an array like this:
self.memos = [NSMutableArray array];
NSString *path = [[NSBundle mainBundle] pathForResource:#"Memos" ofType:#"plist"];
NSDictionary *tempDictionary = [NSDictionary dictionaryWithContentsOfFile:path];
NSArray *tempArray = [tempDictionary objectForKey:#"memos"];
for(id dict in tempArray) {
NSString *title = [dict objectForKey:#"title"];
NSString *content = [dict objectForKey:#"content"];
NSString *category = [dict objectForKey:#"category"];
Memo *m = [[Memo alloc] initWithTitle:title content:content category:category];
[self.memos addObject:m];
}
My question is: how do I add a new Memo (a dictionary of three strings) to the plist (specifically, the array of Memo dictionaries in my plist)?
You have to grab the plist in a NSDictionary, then read the Memos array into a NSMutableArray, add a object to it, then save the mutable memos array as memos in the dictionary and write it back to the plist file.
Change this line:
NSArray *tempArray = [tempDictionary objectForKey:#"memos"];
to
self.memos = [tempDictionary objectForKey:#"memos"];
Hope it helps...
and make sure you write back the self.memos data back to the file.
Also note you cannot edit a file in the bundle. You need to ensure that you copy it over to the documents directory before you start editing it and save it.
Try this:
[tempArray addObject:NewDictionary That you want to insert];
then add this temp array to TempDictionary.
[tempDictionary setObject:tempArray forKey:#"memos"];
and then save tempdictionary to file.
[tempDictionary writeToFile:path atomically:YES];
Hope it Helps!!
I searched the web but everything I can find doesn't work because it uses old code or something...
What filetype would you choose to import a list of words? txt? (about 200 words)
How can I get all of the words out of the file and into an array?
I want to output a random word out of the file into a label.
I tried:
NSString* path = [[NSBundle mainBundle] pathForResource:#"filename"
ofType:#"txt"];
NSString* content = [NSString stringWithContentsOfFile:path
encoding:NSUTF8StringEncoding
error:NULL];
NSArray *arr = [content componentsSeparatedByString:#"\n"];
self.biglabel.text = arr[arc4random() % arr.count];
Thanks in advance!
Michael
edit:
works now. I didn't have plain txt files. I renamed a rtf file and that didn't work.
XCode 4.3.3
You could store it as a plist and then turn that directly into an array.
NSString* path = [[NSBundle mainBundle] pathForResource:#"filename" ofType:#"plist"];
NSArray* arr = [NSArray arrayWithContentsOfFile:path];
Your plist would look something like this:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<array>
<string>...</string>
...
</array>
</plist>
I can't get it work to have the 8 items from the plist below.
I have a plist "settings.plist". Now I wan't from vragen -> category (self.catagorie - 1) -> question. The 8 items. But the array keeps empty.
What am I doing wrong?
Code:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"instellingen.plist"];
NSMutableDictionary *instellingen = [NSMutableDictionary dictionaryWithContentsOfFile:path];
NSArray *vragen = [instellingen objectForKey:#"vragen"];
NSArray *cata = [vragen objectAtIndex: (self.catagorie-1)];
NSArray *question = [cata objectAtIndex: 0];
NSLog(#"count: %i", [question count]);
Plist file:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>vragen</key>
<array>
<array> <--catagorydata
<array> <-- questiondata
<string>vraag</string>
<string>A</string>
<string>B</string>
<string>C</string>
<string>D</string>
<string>1</string>
<string>standaard</string>
<string></string>
</array>
<array>
<string>vraag2</string>
<string>A</string>
<string>B</string>
<string>C</string>
<string>D</string>
<string>1</string>
<string>afbeelding</string>
<string>afbeelding.jpg</string>
</array>
</array>
</array>
<key>firstBoot</key>
<true/>
<key>regelAtRuntime</key>
<true/>
</dict>
</plist>
First of all this line
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"instellingen.plist"]; ?
should be
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"settings.plist"];
I also had to delete these from the dictionary:
<--catagorydata
<-- questiondata
Besides the two things above, there is nothing wrong with your code or your dictionary.
After making those changes I tested your code and the output I got was:
tester[69637:c07] size of dict 3
tester[69637:c07] count: 8
which is correct according to the .plist file
So your problem is at the first 4 lines. Make sure your file is in Documents directory (use something like the following code to see whats going wrong)
NSLog(#"Path : %#",path);
I copied the file in the project folder (because I used the simulator) and used the following code and everything worked fine
NSBundle* b=[NSBundle mainBundle];
NSURL* path1=[b URLForResource:#"settings" withExtension:#"plist"];
NSMutableDictionary *instellingen = [NSMutableDictionary dictionaryWithContentsOfURL:path1];
NSLog(#"size of dict %d",[instellingen count]);
NSArray *vragen = [instellingen objectForKey:#"vragen"];
NSArray *cata = [vragen objectAtIndex: 0];
NSArray *question = [cata objectAtIndex: 0];
NSLog(#"count: %i", [question count]);
Just a quick read, but looks like you have an array of "categoryData" items, that contains an array of questionData items; questionData items are strings.
NSArray *vragen = [instellingen objectForKey:#"vragen"]; // count = 1
NSArray *cata = [vragen objectAtIndex: (self.catagorie-1)]; // count = 2
NSString *question = [cata objectAtIndex: 0];
Recommend you add some breakpoints and look at your data. OR, NSLog(#"data = %#", cata); etc.
I'm trying to parse data from a plist file into a NSMutableArray.
In my plist
Root is a Dictionary containing an Array of 6 Numbers
I've created a label hooked with the IBOutlet UILabel *lbl4 object and I want this label to show the first element of the array made reading the plist. The problem is that the program crashes at the assigning instruction (the last one).
My code is this:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docPath = [paths objectAtIndex:0];
NSString *plistPath = [docPath stringByAppendingPathComponent:#"settings.plist"];
if(![[NSFileManager defaultManager] fileExistsAtPath:plistPath]);
{
plistPath = [[NSBundle mainBundle] pathForResource:#"settings" ofType:#"plist"];
}
NSData *plistXML = [[NSFileManager defaultManager] contentsAtPath:plistPath];
NSString *err = nil;
NSPropertyListFormat format;
NSDictionary *temp = (NSDictionary *) [NSPropertyListSerialization propertyListFromData:plistXML mutabilityOption:NSPropertyListMutableContainersAndLeaves format:&format errorDescription:&err];
if(!temp)
{
NSLog(#"Error reading plist: %#, format: %d", err, format);
}
self.dataSet = [NSMutableArray arrayWithArray:[temp objectForKey:#"Dadi"]];
[lbl4 setText:[NSString stringWithFormat:#"%#", [dataSet objectAtIndex:0]]];
The plist source code is the following:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Dadi</key>
<array/>
<key>D4</key>
<integer>0</integer>
<key>D6</key>
<integer>0</integer>
<key>D8</key>
<integer>0</integer>
<key>D10</key>
<integer>0</integer>
<key>D12</key>
<integer>0</integer>
<key>D20</key>
<integer>0</integer>
</dict>
</plist>
The Debug output says "2012-09-02 18:29:55.483 Faith[6014:707] * Terminating app due to uncaught exception 'NSRangeException', reason: '* -[__NSArrayM objectAtIndex:]: index 0 beyond bounds for empty array'"
In your plist, the array stored at the dictionary's Dadi key is empty!
<key>Dadi</key>
<array/>
So
self.dataSet = [NSMutableArray arrayWithArray:[temp objectForKey:#"Dadi"]];
Sets self.dataSet to an empty array (i.e. even index:0 is beyond the bounds).
I would check for se.f.dataSet.count == 0 and provide a default in this case.
#warrenm mentioned in the comments that the structure of your plist is not what you might have expected. These are XML files, so any tag which ends with /> is "self-closing", and therefore always empty. To contain those numbers, you need to add an ending tag and place them inside:
<array>
<integer>7</integer>
</array>
Of course, on further evaluation, your existing plist has keys associated with those, so this is possibly also not the right solution. You'll need to evaluate what your needs are for that plist.
So I have a plist structured string, that get dynamically (not from the file system). How would I convert this string to a NSDictionary.
I've tried converting it NSData and then to a NSDictionary with NSPropertyListSerialization, but it returns "[NSCFString objectAtIndex:]: unrecognized selector sent to instance 0x100539f40" when I attempt to access the NSDictionary, showing that my Dictionary was not successfully created.
Example of the NSString (that is the plist data):
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Key1</key>
<dict>
<key>Test1</key>
<false/>
<key>Key2</key>
<string>Value2</string>
<key>Key3</key>
<string>value3</string>
</dict>
</dict>
</plist>
Thanks!
See Serializing a Property List
NSData* plistData = [source dataUsingEncoding:NSUTF8StringEncoding];
NSString *error;
NSPropertyListFormat format;
NSDictionary* plist = [NSPropertyListSerialization propertyListWithData:plistData mutabilityOption:NSPropertyListImmutable format:&format errorDescription:&error];
NSLog( #"plist is %#", plist );
if(!plist){
NSLog(#"Error: %#",error);
[error release];
}
Try this:
NSData * data = [yourString dataUsingEncoding:NSUTF8StringEncoding];
NSString *errorDesc = nil;
NSPropertyListFormat format;
NSDictionary * dict = (NSDictionary*)[NSPropertyListSerialization
propertyListFromData:data
mutabilityOption:NSPropertyListMutableContainersAndLeaves
format:&format
errorDescription:&errorDesc];
I've tried converting it NSData and then to a NSDictionary with NSPropertyListSerialization, but it returns "[NSCFString objectAtIndex:]: unrecognized selector sent to instance 0x100539f40" when I attempt to access the NSDictionary, showing that my Dictionary was not successfully created.
No, it shows no such thing. What it shows is that you tried to treat a string as an array. You'd need to determine where in the plist you were trying to get an array and why there was a string where you expected an array—i.e., whether you created the plist incorrectly (putting a string into it where you meant to put an array) or are examining it incorrectly (the presence of a string is correct; your subsequent expectation of an array is wrong).