我是 iPhone 应用程序的新手。我想在按下按钮时每 2 秒显示一条消息为此我正在使用此代码。
此代码只能工作一次。这意味着只调用一次。你能帮我解决这个问题吗?
-(IBAction)fortunecookieAction:(id)sender
{
[self performSelector:@selector(showfortune) withObject:nil afterDelay:2.0];
}
-(void)showfortune
{
int number=arc4random()%5;
switch (number) {
case 0:
fortunelabel.text=@"A holiday takes you back to the summer of '69";
break;
case 1:
fortunelabel.text=@"A meal turns erotic muffin";
break;
case 2:
fortunelabel.text=@"A massage brings";
break;
case 3:
fortunelabel.text=@"A letter in the pa special delivery";
break;
case 4:
fortunelabel.text=@"A spillage tuoo";
break;
default:
break;
}
}