我试图把这种Objective-C代码为斯威夫特之后访问:初始化变量,并在改变其值的for循环
- (void) performActivity{
NSMutableString *reversedStrings = [[NSMutableString alloc] init];
for (NSString *string in self.activityItems){
[reversedStrings appendString:[self reverseOfString:string]];
[reversedStrings appendString:@"\n"];
}
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Reversed"
message:reversedStrings
delegate:self
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alertView show];
}
我的银行代码是:
override func performActivity() {
var reversedStrings = String()
for string in activityItems{
reversedStrings += reverseOfString(string)
reversedStrings += "\n"
}
var alert = UIAlertView(title: "Reversed",
message: reversedStrings,
delegate: self,
cancelButtonTitle: "Cancel",
otherButtonTitles: "Ok")
alert.show()
}
但我的警报中的消息仍然是空字符串。如何访问for循环的结果reverseStrings?在此先感谢您的答案。
我相信'reverseOfString'是您开发一个类的方法。可能错误在那里 - 你可以发布它的实现吗? – Antonio 2014-08-30 06:02:51