【UIKit】页面视图间的切换Alert,Sheet等使用

<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!"];
}

-(IBAction)btnRegisterClicked:(id)sender
{
if(secondViewController==nil)
{
secondViewController=[[SecondViewController alloc]initWithNibName:nil bundle:nil];
}

[self.view.superview addSubview:secondViewController.view];
[self.view removeFromSuperview];
}

#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);
　　}
}