initWithContentsOfFile:
Initializes a newly allocated dictionary using the keys and values found in a file at a given path.
- (id)initWithContentsOfFile:(NSString *)path
Parameters
- path
- A full or relative pathname. The file identified by path must contain a string representation of a property list whose root object is a dictionary.
Return Value of [NSDictionary initWithContentsOfFile]
An initialized dictionary—which might be different than the original receiver—that contains the dictionary atpath, or
nil if there is a file error or if the contents of the file are an invalid representation of a dictionary.Discussion of [NSDictionary initWithContentsOfFile]
The dictionary representation in the file identified by path must contain only property list objects (
NSString,NSData, NSDate, NSNumber, NSArray, or NSDictionary objects). For more details, see Property List Programming Guide. The objects contained by this dictionary are immutable, even if the dictionary is mutable.
Example of [NSDictionary initWithContentsOfFile]
NSString *path = [[NSBundle mainBundle] pathForResource:@"DataBase" ofType:@"plist"];
NSDictionary *rootDict = [[NSDictionary alloc] initWithContentsOfFile:path];
NSString *URLString = [[rootDict objectForKey:key] objectForKey:@"URL"];
[[URLString retain] autorelease];
[rootDict release];
if ( !URLString ) {
URLString = @"";
}
Example of [NSDictionary initWithContentsOfFile]
NSString *path = [[NSBundle mainBundle] pathForResource:@"DataBase" ofType:@"plist"];
NSDictionary *rootDict = [[NSDictionary alloc] initWithContentsOfFile:path];
NSString *URLforAll = @"";
for (id key in rootDict) {
if ( [key isEqualToString:rowString] ) {
NSDictionary *dict = [rootDict objectForKey:key];
URLforAll = [dict objectForKey:@"URL"];
}
}
[[URLforAll retain] autorelease];
[rootDict release];
Example of [NSDictionary initWithContentsOfFile]
NSString *path = [[NSBundle mainBundle] pathForResource:@"stateInfo" ofType:@"plist"];
NSFileManager *fileManager = [NSFileManager defaultManager];
if ([fileManager fileExistsAtPath:path]) {
NSLog(@"The file exists");
} else {
NSLog(@"The file does not exist");
}
NSMutableDictionary *myDic = [[NSMutableDictionary alloc] initWithContentsOfFile:path];
//NSDictionary *myDic = [NSDictionary dictionaryWithContentsOfFile:path];
NSLog(@"The count: %i", [myDic count]);
NSArray *thisArray = [[NSArray alloc] initWithContentsOfFile:path];
NSLog(@"The array count: %i", [thisArray count]);