Question

I’ve been trying to write data back to a pre-defined plist file (data.plist) in my bundle. Using the code below I call the routine ‘dictionaryFromPlist’ to open the file and then call ‘writeDictionaryToPlist’ to write to the plist file. However, no data gets added to the plist file.

NSDictionary *dict = [self dictionaryFromPlist];

NSString *key = @"Reports";
NSString *value = @"TestingTesting";
[dict setValue:value forKey:key];

[self writeDictionaryToPlist:dict];


- (NSMutableDictionary*)dictionaryFromPlist {
  NSString *filePath = [[NSBundle mainBundle] pathForResource:@"data" ofType:@"plist"];
  NSMutableDictionary* propertyListValues = [[NSMutableDictionary alloc]      
  initWithContentsOfFile:filePath];
  return [propertyListValues autorelease];
}

- (BOOL)writeDictionaryToPlist:(NSDictionary*)plistDict{
  NSString *filePath = @"data.plist";
  BOOL result = [plistDict writeToFile:filePath atomically:YES];
  return result;
}

The code runs through successfully and no error is thrown but no data is added to my plist file.

Answer 1

As mentioned by @logancautrell you can not write in mainbundle, you can save your plist in the app documents folder, you could do so:

 NSString *path = @"example.plist";
 NSArray *paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES);
 NSString *basePath = ([paths count]> 0)? [paths objectAtIndex: 0]: nil;
 NSString *documentPath = [basePath stringByAppendingPathComponent:path] // Documents
 NSFileManager *fileManager  = [NSFileManager defaultManager];
 BOOL checkfile = [fileManager fileExistsAtPath: documentPath];
 NSLog(@"%@", (checkFile ? @"Exist": @"Not exist"));//check if exist
 if(!checkfile) {//if not exist
    BOOL copyFileToDoc = [yourDictionary writeToFile:documentPath atomically: YES];
    NSLog(@"%@",(copyFileToDoc ? @"Copied": @"Not copied"));
  }