dataWithContentsOfFile:
Creates and returns a data object by reading every byte from the file specified by a given path.
+ (id)dataWithContentsOfFile:(NSString *)path
Parameters
- path
- The absolute path of the file from which to read data.
Return Value
A data object by reading every byte from the file specified by path. Returns
nil if the data object could not be created.Discussion
This method is equivalent to
dataWithContentsOfFile :options:error: with no options. If you need to know what was the reason for failure, use dataWithContentsOfFile :options:error:.
Example of [NSData dataWithContentsOfFile]
NSMutableString *sss;
sss=[[NSMutableString alloc] initWithString: [[NSBundle mainBundle] resourcePath]];
[sss appendString:@"/"] ;
[sss appendString:@"thumbnail.png"];
NSData *imageData = [NSData dataWithContentsOfFile:sss];---------------------------------------------------------------------------NSMutableString *sss;
sss=[[NSMutableString alloc] initWithString: [[NSBundle mainBundle] resourcePath]];
[sss appendString:@"/"] ;
[sss appendString:@"original.png"];
NSData *imageData = [NSData dataWithContentsOfFile:sss];