initWithBase64Encoding deprecated base64 - ios

Question

I am receiving a warning in Xcode after upgrading to Xcode 7 in my project, I'm using CoacoSecurity which uses Base64 for encryption in the following line of code :
if (![NSData instancesRespondToSelector:#selector(initWithBase64EncodedString:options:)])
{
decoded = [[self alloc] initWithBase64Encoding:[string stringByReplacingOccurrencesOfString:#"[^A-Za-z0-9+/=]" withString:#"" options:NSRegularExpressionSearch range:NSMakeRange(0, [string length])]];
}
Its telling me that initWithBase64Encoding is deprecated, so how can i get over this warning and fix it.
I've converted it but I'm getting another warning:
decoded = [[self alloc] initWithBase64EncodedString:[string stringByReplacingOccurrencesOfString:#"[^A-Za-z0-9+/=]" withString:#""] options:NSRegularExpressionSearch];
The warning says:
Implicit conversion from enumeration type enum NSStringCompareOptions to different enumeration type NSDataBase64DecodingOptions (aka enum NSDataBase64DecodingOptions)

Answer 1

use this
NSData *decodedData = [[NSData alloc] initWithBase64EncodedString:base64String options:0];
instand of
NSData *data=[[NSData alloc]initWithBase64Encoding:(NSString *)dict];

Answer 2

Here's a solution that works with OSX 10.8 and up.
// assume sData is an NSString that's already been set
NSData *vData;
if ([vData respondsToSelector:#selector(base64EncodedStringWithOptions:)]) {
vData = [[NSData alloc] initWithBase64EncodedString:sData options:kNilOptions];
} else { // 10.8 or earlier
vData = [[NSData alloc] initWithBase64Encoding:sData];
}
NSString *sResult = [[NSString alloc]
initWithData:vData encoding:NSUTF8StringEncoding];
I threw in the sResult line only if you wanted to convert it to an NSString instead of an NSData.
So, that gives you a Base64 encoded string. If you want to now unencode it, you would do:
// assuming sData is an NSString that's already been set
NSString *sResult = #"";
NSData *vData = [sData dataUsingEncoding:NSUTF8StringEncoding];
if ([vData respondsToSelector:#selector(base64EncodedStringWithOptions:)]) {
sResult = [vData base64EncodedStringWithOptions:kNilOptions];
} else { // 10.8 or earlier
sResult = [vData base64Encoding];
}

Answer 3

Well, first i used initWithBase64Encoding as #Ske57 recommended and then to get over that warning i had to cast it to NSDataBase64DecodingOptions and it should work fine :
decoded = [[self alloc] initWithBase64EncodedString:[string stringByReplacingOccurrencesOfString:#"[^A-Za-z0-9+/=]" withString:#""] options:(NSDataBase64DecodingOptions)NSRegularExpressionSearch];