模态对话框 UIAlertView

//显示双按钮对话框
- (void)showDialog2bt:(NSString*)msg bt1:(NSString*)bt1Title bt2:(NSString*)bt2Title{
    UIAlertView *alert =[[UIAlertView alloc] initWithTitle:@"" 
                                                   message:msg
                                                  delegate:self 
                                         cancelButtonTitle:bt1Title
                                         otherButtonTitles:bt2Title,nil];
    [alert show];
}

//响应事件
- (void)alertView:(UIAlertView*)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{

       if (buttonIndex == 0) {

       }else if (buttonIndex == 1) {

       }
}