Correcting a plist with dictionaries
- by ingenspor
Plist is copyed to documents directory if it doesn't exist.
If it already exists, I want to use the "Name" key from NSDictionary in bundleArray to find the matching NSDictionary in documentsArray.
When the match is found, I want to check for changes in the strings and replace them if there is a change.
If a match is not found it means this dictionary must be added to documents plist.
This is my code:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[self managePlist];
return YES;
}
- (void)managePlist {
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:@"Objects.plist"];
NSString *bundle = [[NSBundle mainBundle] pathForResource:@"Objects" ofType:@"plist"];
NSFileManager *fileManager = [NSFileManager defaultManager];
if (![fileManager fileExistsAtPath: path]) {
[fileManager copyItemAtPath:bundle toPath:path error:&error];
} else {
NSArray *bundleArray = [[NSArray alloc] initWithContentsOfFile:bundle];
NSMutableArray *documentArray = [[NSMutableArray alloc] initWithContentsOfFile:path];
BOOL updateDictionary = NO;
for(int i=0;i<bundleArray.count;i++) {
NSDictionary *bundleDict=[bundleArray objectAtIndex:i];
BOOL matchInDocuments = NO;
for(int ii=0;ii<documentArray.count;ii++)
{
NSMutableDictionary *documentDict = [documentArray objectAtIndex:ii];
NSString *bundleObjectName = [bundleDict valueForKey:@"Name"];
NSString *documentsObjectName = [documentDict valueForKey:@"Name"];
NSRange range = [documentsObjectName rangeOfString:bundleObjectName options:NSCaseInsensitiveSearch];
if (range.location != NSNotFound) {
matchInDocuments = YES;
}
if (matchInDocuments) {
if ([bundleDict objectForKey:@"District"] != [documentDict objectForKey:@"District"]) {
[documentDict setObject:[bundleDict objectForKey:@"District"] forKey:@"District"];
updateDictionary=YES;
}
}
else {
[documentArray addObject:bundleDict];
updateDictionary=YES;
}
}
}
if(updateDictionary){
[documentArray writeToFile:path atomically:YES];
}
}
}
If I run my app now I get this message: '-[__NSCFDictionary setObject:forKey:]: mutating method sent to immutable object'
How can I fix this?
When this is fixed, do you think my code will work?
If not, I would be happy for some suggestions on how to do this. I have struggled for a while and really need to publish the update with the corrections! Thanks a lot for your help.
