UIView

//command+R 运行

//command+. 停止

//command+B 预编译

//command+1、2、3 模拟器大小

//command+shift+h home键

//command+shift+两个h 后台

//所有控件的父类

//实例化方式，属性，相关方法

//实例化:alloc initWithFrame

//CGRect类型:赋值方式CGRectMake

UIView *view = [[UIView alloc] initWithFrame:CGRectMake(100, 100, 100, 100)];

view.frame = CGRectMake(100, 50, 200, 100);

//位置及大小:frame

//坐标系的原点、正轴方向

//位置：前两个参数 原点：父视图最左上角的点 x轴正轴方向：向右 y轴正轴方向：向下

//开发过程中的单位：像素

//CGRectMake(CGFloat x (view在x轴的位置), CGFloat y (view在y轴的位置), CGFloat width (view本身自己的宽), CGFloat height (view本身自己的高))

//CGRect本身是个结构体->CGPoint结构体、CGSize结构体

//CGPoint->x、y 位置的结构体

//CGSize->width、height 大小的结构体

//设置背景颜色：backgroundColor

//赋值方式一：[UIColor someColor]

/*

+ (UIColor *)blackColor; // 0.0 white

+ (UIColor *)darkGrayColor; // 0.333 white

+ (UIColor *)lightGrayColor; // 0.667 white

+ (UIColor *)whiteColor; // 1.0 white

+ (UIColor *)grayColor; // 0.5 white

+ (UIColor *)redColor; // 1.0, 0.0, 0.0 RGB

+ (UIColor *)greenColor; // 0.0, 1.0, 0.0 RGB

+ (UIColor *)blueColor; // 0.0, 0.0, 1.0 RGB

+ (UIColor *)cyanColor; // 0.0, 1.0, 1.0 RGB

+ (UIColor *)yellowColor; // 1.0, 1.0, 0.0 RGB

+ (UIColor *)magentaColor; // 1.0, 0.0, 1.0 RGB

+ (UIColor *)orangeColor; // 1.0, 0.5, 0.0 RGB

+ (UIColor *)purpleColor; // 0.5, 0.0, 0.5 RGB

+ (UIColor *)brownColor; // 0.6, 0.4, 0.2 RGB

+ (UIColor *)clearColor; // 0.0 white, 0.0 alpha

*/

//赋值方式二：[UIColor colorWithRed:(CGFloat(0.0-1.0)) green:(CGFloat(（0到255的数）/255.0)) blue:(CGFloat) alpha:(CGFloat)]

// view.backgroundColor = [UIColor redColor];

// view.backgroundColor = [UIColor colorWithRed:0.45 green:0.23 blue:0.67 alpha:1.0];

view.backgroundColor = [UIColor colorWithRed:123.0/255.0 green:213/255.0 blue:145/255.0 alpha:1.0];

//透明度:alpha 0.0-1.0 0.0:完全透明 1.0:完全不透明，默认状态

view.alpha = 0.6;

//隐藏属性:hidden BOOL NO:不隐藏，默认状态 YES:隐藏

view.hidden = NO;

//将view加载到window层上：addSubview

//父视图、子视图：不是继承关系、不是绝对的概念

//[父视图 addSubview:子视图]

[self.window addSubview:view];

//实例化

UIView *view1 = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 50, 50)];

view1.backgroundColor = [UIColor redColor];

//添加到父视图上面

[view addSubview:view1];

UIView * view2 = [[UIView alloc]init];

view2.bounds = CGRectMake(0, 0, 30, 30);

view2.backgroundColor = [UIColor yellowColor];

[view1 addSubview:view2];

// ************************************************

//实例化

UIView *view = [[UIView alloc] initWithFrame:CGRectMake(50, 100, 220, 220)];

//设置背景颜色

view.backgroundColor = [UIColor redColor];

//设置透明度

//透明度：父视图有透明度，它上面的子视图就会有相应的透明度；子视图的透明度对父视图没有影响。

view.alpha = 1.0;

//设置隐藏属性

//隐藏属性：父视图隐藏，子视图跟着隐藏；子视图的隐藏属性对父视图没有影响。

view.hidden = NO;

//tag

view.tag = 1000;

//添加到父视图上面

[self.window addSubview:view];

//创建一个view的子视图

UIView *view2 = [[UIView alloc] initWithFrame:CGRectMake(10, 10, 80, 80)];

view2.backgroundColor = [UIColor blueColor];

view2.alpha = 1.0;

view2.hidden = YES;

//添加到view上面

[view addSubview:view2];

//由tag找到相应的view

UIView *viewTag = (UIView *)[self.window viewWithTag:1000];

NSLog(@"view=%@",view);

NSLog(@"tag=%@",viewTag);

/*

view=<UIView: 0x78f544e0; frame = (50 100; 220 220); tag = 1000; layer = <CALayer: 0x78f53110>>

tag =<UIView: 0x78f544e0; frame = (50 100; 220 220); tag = 1000; layer = <CALayer: 0x78f53110>>

*/

/******UIView-中心点*****/
UIView *view = [[UIView alloc] init];
//位置及大小的设置方式一：frame
//    view.frame = CGRectMake(100, 100, 120, 120);
//位置及大小的设置方式二：center(中心点，位置)，bounds(大小)

//center:view自己的中心点
view.center = CGPointMake(160, 70);
//bounds:后两个参数是view自己本身的大小
//bounds:前两个参数影响的是view自己本身的坐标系:正数坐标系原点向左和向上移动；父数坐标系原点向右和向下移动
//bounds:前两个参数后期：就是(0,0)
view.bounds = CGRectMake(10, 10, 120, 120);

view.backgroundColor = [UIColor redColor];
[self.view addSubview:view];

UIView *view1 = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 60, 60)];
view1.backgroundColor = [UIColor cyanColor];
[view addSubview:view1];

/*******UIView-变形属性**********/
UIView *viewTransform = [[UIView alloc] initWithFrame:CGRectMake(100, 170, 100, 100)];
viewTransform.backgroundColor = [UIColor orangeColor];
//    150  270
//变形属性是以中心点为基准的
//变形属性:transform
//大小变形：CGAffineTransformMakeScale  width*sx   heigth*sy
viewTransform.transform = CGAffineTransformMakeScale(2, 0.5);
//角度变形：CGAffineTransformMakeRotation
viewTransform.transform = CGAffineTransformMakeRotation(M_PI_4);

//NSStringFromCGPoint  将CGPoint类型转成字符串类型
NSLog(@"%@",NSStringFromCGPoint(viewTransform.center));

[self.view addSubview:viewTransform];

/********UIView-圆角设置***********/
UIView *viewLayer = [[UIView alloc] initWithFrame:CGRectMake(110, 300, 100, 100)];
viewLayer.backgroundColor = [UIColor magentaColor];

//圆角设置:layer
//圆角大小:cornerRadius   正方形边长的一半为圆
viewLayer.layer.cornerRadius = 20;
//边框设置:borderWidth
viewLayer.layer.borderWidth = 5;
//设置边框颜色:borderColor  默认黑色  [UIColor greenColor].CGColor
viewLayer.layer.borderColor = [UIColor greenColor].CGColor;
viewLayer.layer.borderColor = [[UIColor greenColor] CGColor];
//是否切割子视图超出圆角的部分  :  YES:切割掉   默认NO:不切割
//如果masksToBounds＝YES  阴影效果出不来
viewLayer.layer.masksToBounds = NO;

//阴影
//阴影的透明度：shadowOpacity  默认0.0
viewLayer.layer.shadowOpacity = 1.0;
//阴影的偏移量:shadowOffset
viewLayer.layer.shadowOffset = CGSizeMake(50, 50);
//阴影的颜色:shadowColor
viewLayer.layer.shadowColor = [UIColor blueColor].CGColor;
//阴影角度：shadowRadius   带有虚化的效果
viewLayer.layer.shadowRadius = 30;

[self.view addSubview:viewLayer];

/*************UIView-层次关系***************/

//添加视图：addSubview
[self.view addSubview:view5];
//移除视图：removeFromSuperview
//    [view5 removeFromSuperview];
//将某个视图移动到最上面  bringSubviewToFront:
[self.view bringSubviewToFront:view1];
//将某个视图移动到最下面   sendSubviewToBack:
[self.view sendSubviewToBack:view1];
//将某一个视图移动到另一个视图的上面
[self.view insertSubview:view1 aboveSubview:view3];
//将某一个视图移动到另一个视图的下面
[self.view insertSubview:view1 belowSubview:view2];
//将某个视图放到指定的位置
//    [self.view insertSubview:view1 atIndex:3];
//交换两个视图的位置
[self.view exchangeSubviewAtIndex:1 withSubviewAtIndex:4];

/***********UIView-响应关系***********/
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(70, 280, 160, 40)];
view.backgroundColor = [UIColor blueColor];
[self.view addSubview:view];

UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];
button.frame = CGRectMake(80, 5, 160, 30);
button.backgroundColor = [UIColor purpleColor];
[button setTitle:@"button" forState:UIControlStateNormal];
[button addTarget:self action:@selector(buttonClick:) forControlEvents:UIControlEventTouchUpInside];
[view addSubview:button];
/*
超出父视图范围的部分不参与用户响应，只有在父视图之内的部分才会参与用户响应。
*/

//UILabel
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(20, 340, 280, 60)];
label.backgroundColor = [UIColor redColor];
//label 添加的按钮想要展示的话需要将clipsToBounds＝YES
//UIView的属性:是否切割多余视图的属性
label.clipsToBounds = YES;
//只有当clipsToBounds＝YES时，label的圆角效果才能出来
label.layer.cornerRadius = 20;

//userInteractionEnabled  打开用户响应开关的属性   当为YES时：可以参与用户响应   只有UILabel和UIImageView默认NO
/*
只有父视图能够接受用户响应，它上面的子视图才能参与用户响应
*/
label.userInteractionEnabled = YES;

[self.view addSubview:label];
//UIButton
UIButton *button1 = [UIButton buttonWithType:UIButtonTypeSystem];
button1.frame = CGRectMake(40, 10, 200, 40);
button1.backgroundColor = [UIColor grayColor];
[button1 setTitle:@"button" forState:UIControlStateNormal];
[button1 addTarget:self action:@selector(buttonDown:) forControlEvents:UIControlEventTouchUpInside];
[label addSubview:button1];
}

//博客园竟然也有这种功能,以前竟没发现...