NSDateFormatter 不兼容类型错误
我在 Xcode 中收到以下错误：
警告：不兼容的 Objective-C 类型 'struct NSDate *'，在从不同的 Objective-C 类型传递'setUpdate:'的参数 1 时预期'struct NSString *'
当我尝试时发生错误将格式化字符串保存到 myObj.update
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss'Z'"];
//myObj is an object with instance variable 'update' as a NSString string
myObj.update = [formatter dateFromString:@"2011-03-17T18:15:05Z"];
[formatter release];
我知道我做错了一些小错误，但无法查明。感谢您的帮助！ :)
I am receiving the following error in Xcode:
warning: incompatible Objective-C types 'struct NSDate *', expected 'struct NSString *' when passing argument 1 of 'setUpdate:' from distinct Objective-C type
The error happens when I am trying to save the formatted string to myObj.update
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss'Z'"];
//myObj is an object with instance variable 'update' as a NSString string
myObj.update = [formatter dateFromString:@"2011-03-17T18:15:05Z"];
[formatter release];
I know I am doing something wrong that is minor but can't pinpoint. Thanks for the help! :)
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dateFromString:返回一个NSDate实例，而不是字符串。您需要将您的update属性设置为NSDate。编译器基本上告诉您该方法正在返回一个日期，但您试图将其分配给字符串属性，而这并不健康！dateFromString:returns an instance ofNSDate, not a string. You need to make yourupdateproperty anNSDate. The compiler is basically telling you that the method is returning a date, but you're trying to assign that to a string property, and that's just not gonna be healthy!