为什么我在使用 XCode 进行分析时会发生内存泄漏？
NSString *email = [defaults objectForKey:@"email"];
NSString *encodeEmail = (__bridge NSString *)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, (__bridge CFStringRef)email, NULL, CFSTR(":/?#[]@!$ &'()*+,;=\"<>%{}|\\^~`"), CFStringConvertNSStringEncodingToEncoding(NSUTF8StringEncoding));
NSString *urlp1=@"/xyz/xx/";
NSString *fullUrl=[urlp1 stringByAppendingString: [NSString stringWithFormat:@"%@/following", encodeEmail]];
最佳答案
来自 transitioning to ARC release notes
__bridge transfers a pointer between Objective-C and Core Foundation with no transfer of ownership.
这意味着 encodeEmail 没有分配内存的所有权，因此它不会被 ARC 释放。
我认为你应该使用__bridge_transfer
__bridge_transfer or CFBridgingRelease moves a non-Objective-C pointer to Objective-C and also transfers ownership to ARC. ARC is responsible for relinquishing ownership of the object.
NSString *encodeEmail = (__bridge_transfer NSString *)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, (__bridge CFStringRef)email, NULL, CFSTR(":/?#[]@!$ &'()*+,;=\"<>%{}|\\^~`"), CFStringConvertNSStringEncodingToEncoding(NSUTF8StringEncoding));
关于objective-c - 潜在的内存泄漏编码 url，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13487484/