iphone常用控件之UIAlertView

//初始化AlertView
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"AlertViewTest" 
                            message:@"message" 
                            delegate:self 
                            cancelButtonTitle:@"Cancel" 
                            otherButtonTitles:@"OtherBtn",nil];
    //设置标题与信息，通常在使用frame初始化AlertView时使用
    alert.title = @"AlertViewTitle";
    alert.message = @"AlertViewMessage";
    
    //这个属性继承自UIView，当一个视图中有多个AlertView时，可以用这个属性来区分
    alert.tag = 0;
    
    //只读属性，看AlertView是否可见
    NSLog(@"%d",alert.visible);
    
    //通过给定标题添加按钮
    [alert addButtonWithTitle:@"addButton"];
    
    //按钮总数
    NSLog(@"numberOfButtons:%d",alert.numberOfButtons);
    
    //获取指定索引的按钮的标题
    NSLog(@"buttonTitleAtIndex:%@",[alert buttonTitleAtIndex:2]);
    
    //获得取消按钮的索引
    NSLog(@"cancelButtonIndex:%d",alert.cancelButtonIndex);
    
    //获得第一个其他按钮的索引
    NSLog(@"firstOtherButtonIndex:%d",alert.firstOtherButtonIndex);
    
    //显示AlertView
    [alert show];
    
    [alert release];

#pragma mark  -- UIAlertViewDelegate --
//根据被点击按钮的索引处理点击事件
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    NSLog(@"clickedButtonAtIndex:%d",buttonIndex);
}
//AlertView已经消失时
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
    NSLog(@"didDismissWithButtonIndex");
}
//AlertView即将消失时
- (void)alertView:(UIAlertView *)alertView willDismissWithButtonIndex:(NSInteger)buttonIndex {
    NSLog(@"willDismissWithButtonIndex");
}

- (void)alertViewCancel:(UIAlertView *)alertView {
    NSLog(@"alertViewCancel");
}
//AlertView已经显示时
- (void)didPresentAlertView:(UIAlertView *)alertView {
    NSLog(@"didPresentAlertView");
}
//AlertView即将显示时
- (void)willPresentAlertView:(UIAlertView *)alertView {
    NSLog(@"willPresentAlertView");
}