自己寫的撥打電話的代碼

#pragma mark - telAction
- (void)telAction
{
    // 進入撥打電話頁面
    UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"服務時間：任務日 09:00-17:30" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:[NSString stringWithFormat:@"呼叫：%@-%@-%@",[kCustomerService substringToIndex:3],[kCustomerService substringWithRange:NSMakeRange(3, 3)],[kCustomerService substringFromIndex:6]] otherButtonTitles:nil];
    actionSheet.actionSheetStyle = UIActionSheetStyleAutomatic;
    [actionSheet shoWinView:self.view];
}

#pragma mark - UIActionSheetDelegate
- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex
{
    if (buttonIndex != [actionSheet cancelButtonIndex]) {
        NSString *URLString = [NSString stringWithFormat:@"tel://%@", kCustomerService];
        
        if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:URLString]]) {
            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:URLString]];
        } else {
            [self toast:@"以後設備中沒有通話功用"];
        }
    }
}

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