如何在uiAlert上添加另一個將用戶導向Facebook的按鈕？

Question

我需要添加一個按鈕Facebook，然後該操作應該將用戶帶到Facebook，我只是不確定如何從下面的代碼中執行操作？

-(IBAction)btContinueClick:(id)sender{ 

    if(Level == [list count]){ 

     UIAlertView *info = [[UIAlertView alloc]initWithTitle:@"Good" message:@"Go to facebook?" delegate:self cancelButtonTitle:@"NO" otherButtonTitles:@"Facebook"]; 
     [info show]; //// Change Game End Message 
    } 
} 

Answer 1

確保你在.h文件中

-(IBAction)btContinueClick:(id)sender{ 
if(Level == [list count]){ 


    UIAlertView *info = [[UIAlertView alloc]initWithTitle:@"Good" message:@"Go to facebook?" delegate:self cancelButtonTitle:@"NO" otherButtonTitles:@"Facebook"]; 
    [info show]; //// Change Game End Message 
    info.delegate=self; 

} 
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex 
{ 
    NSString *title = [alertView buttonTitleAtIndex:buttonIndex]; 

    if(buttonIndex==1) 
    { 
     NSLog(@"Facebook selected."); 
     NSURL *url = [NSURL URLWithString:@"fb://profile/<id>"]; // provide the app ID 
     [[UIApplication sharedApplication] openURL:url]; 


    } 
} 

Answer 2

如果你想要去的Facebook的iOS中的本機應用程序添加UIAlertViewDelegate。的alertView

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex 
{ 

    if(buttonIndex == 1) { 
    NSURL *url = [NSURL URLWithString:@"fb://profile"]; 
    if ([[UIApplication sharedApplication] canOpenURL:url]) { //USE FB NATIVE APP 
     [[UIApplication sharedApplication] openURL:url]; 
    } 
    else { //IF THE DEVICE IS UNABLE TO OPEN IN NATIVE APP, USE BROWSER INSTEAD 
     NSURL *browserURL = [NSURL URLWithString:@"http://www.facebook.com"]; 
     [[UIApplication sharedApplication] openURL:browserURL]; 
    } 
    } 
}