#在蓝懿学习iOS的日子#Day11

今天主要是学习控件的使用方式

一、UIView

UIView *v = [[UIViewalloc]initWithFrame:CGRectMake(100, 100, 100, 100)];

    //*****属性
    //背景颜色
    v.backgroundColor = [UIColor purpleColor];
    //透明度
    v.alpha = .5;
    //隐藏
    //    v.hidden = YES;
    //    frame 位置和大小
    v.frame = CGRectMake(50, 50, 200, 200);
    //  显示边界 大小
    v.bounds = CGRectMake(0, 0, 300, 300);
    //    中心点
    v.center = self.view.center;
    //拿到所有的子控件
    NSArray *views = self.view.subviews;
    //**********方法
    //添加控件
    //    [self.view addSubview:v];
    //    插入控件
    [self.view insertSubview:v atIndex:0];
    //    把某个子控件 带到最前端显示
    //    [self.view bringSubviewToFront:self.greenView];
   
   
    //交换子控件的位置
    [self.view exchangeSubviewAtIndex:0 withSubviewAtIndex:1];
   
    //    获取父视图

    //        UIView *superView = v.superview;

- (IBAction)clicked:(id)sender {
    //遍历所有的子控件
    for (UIView *v in self.view.subviews) {
        //判断对象是什么类型
        if (![v isMemberOfClass:[UIButton class]]) {
            //从界面中删除控件
           [v removeFromSuperview];
        }
    }

}

二、uiLabel

UILabel *l = [[UILabel alloc]initWithFrame:CGRectMake(20, 200, 200, 200)];
 
    [self.view addSubview:l];
    l.backgroundColor = [UIColor yellowColor];
    l.text = @"abcd";
    l.textColor = [UIColor greenColor];
    l.font = [UIFont fontWithName:@"zapfino" size:35];
    //显示的行数
    l.numberOfLines = 0;
    [l setTextAlignment:NSTextAlignmentCenter];
    //阴影
    l.shadowColor = [UIColor redColor];
    //阴影显示的位置

    l.shadowOffset = CGSizeMake(5, 5);

 

三、UIbutton

    UIButton *btu = [[UIButton alloc]initWithFrame:CGRectMake(100, 200, 100, 50)];
//    UIButton*btu = [UIButton buttonWithType:UIButtonTypeSystem];
//    btu.frame =CGRectMake(100, 200, 100, 50);
    //在按钮输入文本  按钮的正常状态
    [btu setTitle:@"wo" forState:UIControlStateNormal];
   //按钮的点击下去的状态
    [btu setTitle:@"hahah" forState:UIControlStateHighlighted];
    //按钮的颜色

  btu.backgroundColor = [UIColor redColor];

 

    //添加事件

  [btu addTarget:self action:@selector(myAction) forControlEvents:UIControlEventTouchUpInside];
    [btu addTarget:self action:@selector(myDownAction:) forControlEvents:UIControlEventTouchDown];

    

    [self.view addSubview:btu];

-(void)myDownAction:(UIButton*)btn{
    //    [btn removeFromSuperview];
    NSLog(@"按下了");
}
-(void)myAction{
    NSLog(@"松手了");

}