NSKeyedUnarchiver initForReadingWithData example ios

initForReadingWithData:

Initializes the receiver for decoding an archive previously encoded by NSKeyedArchiver.

- (id)initForReadingWithData:(NSData *)data

Parameters

data

An archive previously encoded by NSKeyedArchiver.

Return Value of [NSKeyedUnarchiver initForReadingWithData]

An NSKeyedUnarchiver object initialized for for decoding data.

Discussion

When you finish decoding data, you should invoke finishDecoding.

This method raises an NSInvalidArchiveOperationException if data is not a valid archive.

Example of [NSKeyedUnarchiver initForReadingWithData]

NSData *data = [[NSMutableData alloc]initWithContentsOfFile:YOURFILEPATH];
NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:data];
YOURDICTIONARY = [unarchiver decodeObjectForKey: YOURDATAKEY];
[unarchiver finishDecoding];
[unarchiver release];
[data release];

Example of [NSKeyedUnarchiver initForReadingWithData]

- (void)readVenueArchiveFile:(NSString *)inFile key:(NSString *)inKey
{
    NSMutableData *theData;
    NSKeyedUnarchiver *decoder;

    theData = [[NSData alloc] initWithContentsOfFile:inFile];
    decoder = [[NSKeyedUnarchiver alloc] initForReadingWithData:theData];
    ListClassName *decodedList = [decoder decodeObjectForKey:inKey];
    self.venueIOList = decodedList;
    [decoder finishDecoding];
    [decoder release];
    [theData release];

}