我希望我的輸出是「23」,但它仍然顯示「123」。stringByReplacingOccurrencesOfString:不起作用
NSString *valorTextField = [[NSString alloc] initWithFormat:@"123"];
[valorTextField stringByReplacingOccurrencesOfString:@"1" withString:@""];
NSLog(@"%@", valorTextField);
試試看:'NSString * valorTextField; valorTextField = @「123」; [valorTextField stringByReplacingOccurrencesOfString:@「1」withString:@「」]; NSLog(@「%@」,valorTextField);' – logixologist