【UIKit】UIAlert，UIActionSheet

<UIAlertViewDelegate,UIActionSheetDelegate>

-(IBAction)btnShowAlertView:(id)sender

{
    UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"标题"
                                                 message:@"对话框的内容"
                                                delegate:self
                                       cancelButtonTitle:@"关闭"
                                       otherButtonTitles:@"其他1",@"其他2",nil];
    [alert show];
    [alert release];
}

#pragma mark - UIAlertViewDelegate可以获取到所按的按钮的index
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    NSLog(@"actionSheet buttonIndex = %i", buttonIndex);
}

<UIAlertViewDelegate,UIActionSheetDelegate>

-(IBAction)btnShowActionSheet:(id)sender

{
    UIActionSheet *actions=[[UIActionSheet alloc]initWithTitle:@"标题"
                                                      delegate:self
                                             cancelButtonTitle:@"关闭"
                                        destructiveButtonTitle:nil
                                             otherButtonTitles:@"其他1",@"其他2", nil];
    [actions showInView:self.view];
    [actions release];
}

#pragma mark - UIActionSheetDelegate
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
    NSLog(@"actionSheet buttonIndex = %i", buttonIndex);
}

-(IBAction)btnStatusHUD:(id)sender

{
    [SVStatusHUD showSuccessWithStatus:@"授权已过期!"];
}

#import "SVStatusHUD.h"

-(IBAction)btnStatusHUD:(id)sender
{
    [SVStatusHUD showSuccessWithStatus:@"授权已过期!"];
}

#pragma mark -循环提问
-(IBAction)btnShowAlertView:(id)sender
{
    UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"标题"
                                                 message:@"对话框的内容"
                                                delegate:self
                                       cancelButtonTitle:@"关闭"
                                       otherButtonTitles:@"其他1",@"其他2",nil];
    alert.tag=1;    // 【使用tag值进行嵌套跳出】
    [alert show];
    [alert release];
}



#pragma mark - UIAlertViewDelegate
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    if(alertView.tag==1)      // 【判断如果tag==1,那么就继续第二层，然后在本方法中设置tag为2，当再次进入此循环后，tag！=1就可以跳出循环了】
    {
    NSLog(@"actionSheet buttonIndex = %i", buttonIndex);
    UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"标题2"
                                                 message:@"对话框的内容2"
                                                delegate:self
                                       cancelButtonTitle:@"关闭2"
                                       otherButtonTitles:@"第二层2",@"第二层1",nil];
    alert.tag=2;
    [alert show];
    [alert release];
    }
else
　　{
   　　 NSLog(@"actionSheet buttonIndex = %i", buttonIndex);
　　}
}