图片String :
image.png
NSData * imageData = [[NSData alloc] initWithBase64EncodedString:imageStr options:NSDataBase64DecodingIgnoreUnknownCharacters];
UIImage * image = [UIImage imageWithData:imageData];
图片String :
NSData * imageData = [[NSData alloc] initWithBase64EncodedString:imageStr options:NSDataBase64DecodingIgnoreUnknownCharacters];
UIImage * image = [UIImage imageWithData:imageData];