Objective-C Language NSData Create
Example
From NSString:
NSString *str = @"Hello world";
NSData *data = [str dataUsingEncoding:NSUTF8StringEncoding];
From Int:
int i = 1;
NSData *data = [NSData dataWithBytes: &i length: sizeof(i)];
You can also use the following methods:
+ dataWithContentsOfURL:
+ dataWithContentsOfURL:options:error:
+ dataWithData:
- initWithBase64EncodedData:options:
- initWithBase64EncodedString:options:
- initWithBase64Encoding:
- initWithBytesNoCopy:length:
- initWithBytesNoCopy:length:deallocator:
- initWithBytesNoCopy:length:freeWhenDone:
- initWithContentsOfFile:
- initWithContentsOfFile:options:error:
- initWithContentsOfMappedFile:
- initWithContentsOfURL:
- initWithContentsOfURL:options:error:
- initWithData:
