[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://maps.apple.com/?ll=25.033718,121.56481"]];
上面這種方式不會出現大頭針，螢幕正中央即為指定的座標，如需顯示大頭針則改成如下：
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://maps.apple.com/?q=25.033718,121.56481"]];
