I have a very basic question about how to write to a plist. I added a "Here.plist" file to my resources folder. The following is my code:
NSString *path = [[NSBundle mainBundle]pathForResource:#"Here" ofType:#"plist"];
NSArray *array = [[NSArray alloc]initWithObjects:#"First", #"Second", #"Third", nil];
[array writeToFile:path atomically:YES];
"Here.plist" is still empty after executing the code. I even tried using a NSDictionary as follows:
NSDictionary *dict = [[NSDictionary alloc]initWithObjectsAndKeys:#"firstValue", #"First", #"secondValue", #"Second", #"thirdValue", #"Third", nil];
[dict writeToFile:path atomically:YES];
I went through many tutorials and forums but its just not working for me. What am i doing wrong? Losing my head over this.
You can't write into the bundle. Try writing into the documents directory. For example:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSArray *array = [[NSArray alloc]initWithObjects:#"First", #"Second", #"Third", nil];
[array writeToFile:[documentsDirectory stringByAppendingPathComponent:#"Here.plist" atomically:YES];
I suspect your problem is due to the fact that you can't write to the application bundle, only to your application's document store.
To obtain a path to the document store, use:
NSArray *searchPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *docStorePath = [searchPaths objectAtIndex:0];
NSString *filePath = [docStorePath stringByAppendingPathComponent:#"XXXXX"];
Related
I have write code like this in Viewdidload method. But it don't create file .plist.
I don't know whether code is wi8 or wrong. And where i have to write?
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0]; //2
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"data1.plist"]; //3
NSFileManager *fileManager = [NSFileManager defaultManager];
if ( ![fileManager fileExistsAtPath:path] ) {
NSString *pathToSettingsInBundle = [[NSBundle mainBundle]
pathForResource:#"data1" ofType:#"plist"];
}
You have just created a path to it, you should try loading it into a NSDictionary.
NSDictionary* mydictionary = [ NSDictionary dictionaryWithContentsOfFile: pathToSettingsInBundle];
Inside your if block add a second line
[fileManager copyItemAtPath:pathToSettingsInBundle toPath:path error:&error];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
plistpath = [[NSString alloc] initWithString:[documentsDirectory stringByAppendingPathComponent:#"Product.plist"]];
And then
[array writeToFile:path atomically:YES];
[Whatever [Array or Dictionary] you want to Write in Plist]
If it is still not creating the plist then check whether your array or dictionary must be empty.
I have an MSMutableArray that contains many NSDictionaries. A dictionary is just an NSString with a key "symbol".
I am writing my array to a plist:
+ (void)writeObjectToPList:(id)myData {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"mobile-watchlist.plist"];
[myData writeToFile:path atomically:YES];
}
How can I read this back as an array?
You can read the file back like this --
NSArray *array = [NSArray arrayWithContentsOfFile:path];
How to use NSMutable Dictionary in another class for read and write data from plist file in iphone....
Any Ideas?
As you can find in in NSDictionary reference, this class has a method to create a nsdictionary from a file initWithContentsOfFile:(NSString *)path . You can do something like:
NSString *plistPath = [[NSBundle mainBundle] pathForResource:#"myDictionary" ofType:#"plist"];
NSDictionary *dict = [[NSDictionary alloc] initWithContentsOfFile:plistPath];
Where myDictionary is your plist name (In case of your plist is inside resource bundle).
You can write a plist on disk with the method:
[dict writeToFile:filePath atomically: YES];
Where filePath is your destination path.
See the Plist files example on this tutorial.
// Look in Documents for an existing plist file
NSArray *paths = NSSearchPathForDirectoriesInDomains(
NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
myPlistPath = [documentsDirectory stringByAppendingPathComponent:
[NSString stringWithFormat: #"%#.plist", plistName] ];
[myPlistPath retain];
// If it's not there, copy it from the bundle
NSFileManager *fileManger = [NSFileManager defaultManager];
if ( ![fileManger fileExistsAtPath:myPlistPath] ) {
NSString *pathToSettingsInBundle = [[NSBundle mainBundle]
pathForResource:plistName ofType:#"plist"];
}
NSArray *paths = NSSearchPathForDirectoriesInDomains(
NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectoryPath = [paths objectAtIndex:0];
NSString *path = [documentsDirectoryPath
stringByAppendingPathComponent:#"myApp.plist"];
NSMutableDictionary *plist = [NSDictionary dictionaryWithContentsOfFile: path];
myKey = (int)[[plist valueForKey:#"myKey"] intValue];
myKey2 = (bool)[[plist valueForKey:#"myKey2"] boolValue];
[plist setValue:myKey forKey:#"myKey"];
[plist writeToFile:path atomically:YES];
I'm trying to get a UITableView to read it's data from a file. I've attempted it like this:
NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *fullFileName = [NSString stringWithFormat:#"%#/entries.plist", documentsDirectory];
self.dataForTable = [[NSMutableArray alloc] initWithContentsOfFile:fullFileName];
This compiles fine, but when saving something to the file in the following snippet, the file is not saved nor anything is written to the array:
NSMutableDictionary*userDictionary;
userDictionary = [[NSMutableDictionary alloc] init];
[userDictionary setObject:name.text forKey:#"name"];
[userDictionary setObject:email.text forKey:#"email"];
[userDictionary setObject:serial.text forKey:#"serial"];
[userDictionary setObject:notes.text forKey:#"notes"];
[userDictionary setObject:[NSNumber numberWithInt:[licenseType selectedRowInComponent:0]] forKey:#"license_type"];
[userDictionary setObject:[date date] forKey:#"date"];
[userDictionary setObject:[NSNumber numberWithBool:[paymentSwitch isOn]] forKey:#"payment"];
NSString*dirToSaveTo = [NSHomeDirectory() stringByAppendingPathComponent:#"Documents"];
NSString*fileName = [NSString stringWithFormat:#"%#.plist",name.text];
NSString*saveName = [dirToSaveTo stringByAppendingPathComponent:fileName];
[userDictionary writeToFile:saveName atomically:NO];
NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *fullFileName = [NSString stringWithFormat:#"%#/entries.plist", documentsDirectory];
[self.dataForTable addObject:name.text];
NSLog(#"%#",self.dataForTable);
[self.dataForTable writeToFile:fullFileName atomically:YES];
The NSLog just returns (null). The *plist file is never written. What am I doing wrong?
Almost certainly this line is failing, and you're not checking whether it returned nil:
self.dataForTable = [[NSMutableArray alloc] initWithContentsOfFile:fullFileName];
Once it does return nil, every other call to it does nothing. The most likely problems are that the file path you have constructed is incorrect and doesn't point to the file, or that the file is not a proper plist.
Any one please answer me, how to write into the plist file which is located in my resource folder. Please write an example code for me.
You can't. The application bundle is not writable on iPhone OS devices.
-(IBAction)textFieldCheck:(id) sender {
myPrimaryinfo = [[NSMutableArray arrayWithCapacity:6]retain];
NSArray *keys = [NSArray arrayWithObjects:#"Date",#"Time",#"Address",#"City",#"State",#"Zipcode",nil];
[myPrimaryinfo addObject:[NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:
[NSString stringWithFormat:#"%#",txtDate.text],
[NSString stringWithFormat:#"%#",txtTime.text],
[NSString stringWithFormat:#"%#",txtAddress.text],
[NSString stringWithFormat:#"%#",txtCity.text],
[NSString stringWithFormat:#"%#",txtState.text],
[NSString stringWithFormat:#"%#",txtZip.text],nil]forKeys:keys]];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"myPrimaryinfo.plist"];
[myPrimaryinfo writeToFile:path atomically:NO];
NSLog(#"PrimaryInfo array: %#", myPrimaryinfo);
}