iphone - 在 iPhone 中创建调用按钮？

Question

我想创建 2 个按钮。当按钮被按下时，它应该会打电话。我写了这段代码，它可以工作，但我的问题是按钮调用相同的号码。我想调用不同的号码。谁能修复我的代码？

#define firstnumber                 @"1"
#define secondnumber                @"2"

- (IBAction)first:(id)sender 
{
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:firstnumber message:@"do you want to call?" delegate:self cancelButtonTitle:@"cancel" otherButtonTitles:@"ok", nil];
    [alert show];
    [alert release];
}

- (IBAction)second:(id)sender 
{
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:secondnumber message:@"do you want to call?" delegate:self cancelButtonTitle:@"cancel" otherButtonTitles:@"ok", nil];
    [alert show];
    [alert release];
}

- (void)alertView:(UIAlertView *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex 
{
    // the user cticlicked one of the OK/Cancel buttons
    if (buttonIndex == 1)
    {
        NSLog(@"ok");
        NSURL *url = [[NSURL alloc] initWithString:[NSString stringWithFormat:@"tel://%@", firstnumber]];
        [[UIApplication sharedApplication] openURL:url];
        [url release];
    }
    else
    {
        NSLog(@"cancel");
    }
}

`

Answer 1

应该这样做:

#define firstnumber                 @"1"
#define secondnumber                @"2"

- (IBAction)first:(id)sender 
{
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:firstnumber message:@"do you want to call?" delegate:self cancelButtonTitle:@"cancel" otherButtonTitles:@"ok", nil];
    alert.tag = 1;
    [alert show];
    [alert release];
}

- (IBAction)second:(id)sender 
{
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:secondnumber message:@"do you want to call?" delegate:self cancelButtonTitle:@"cancel" otherButtonTitles:@"ok", nil];
    alert.tag = 2;
    [alert show];
    [alert release];
}

- (void)alertView:(UIAlertView *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex 
{
    // the user cticlicked one of the OK/Cancel buttons
    if (buttonIndex == 1)
    {
        NSLog(@"ok");
        NSURL *url;
        switch (actionSheet.tag) {
            default:
            case 1:
                url = [[NSURL alloc] initWithString:[NSString stringWithFormat:@"tel://%@", firstnumber]];
                break;
            case 2:
                url = [[NSURL alloc] initWithString:[NSString stringWithFormat:@"tel://%@", secondnumber]];
                break;
        }
        [[UIApplication sharedApplication] openURL:url];
        [url release];
    }
    else
    {
        NSLog(@"cancel");
    }
}