源码-02-UIView简介

 : 继承某个类；//ViewController : UIViewController

<>协议遵守，协议实现；

（）类扩展->为已有的类添加方法和属性（私有）；//@interface ViewController ()

（name）分类添加->为已有的类添加方法；

.ViewController.h文件

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController


@end

 

.ViewController.m文件

//
//  ViewController.m
//  02-UIView简介
//
#import "ViewController.h"

@interface ViewController ()
@property (weak, nonatomic) IBOutlet UILabel *label;
@end

@implementation ViewController

// 控制器的view加载完毕时调用
- (void)viewDidLoad {
    [super viewDidLoad];
    
//    NSLog(@"%@", self.label.superview);
//    NSLog(@"%@", self.view.subviews);
    
//    self.view.frame.origin.x == 100;
//    self.view.frame.origin.y == 90;
//    self.view.frame.size.width;
//    self.view.frame.size.height;
    
    NSLog(@"%@", NSStringFromCGRect(self.view.frame));
    
}

- (IBAction)btnClick {
    UIView *tempView = [[UIView alloc] init];
    tempView.backgroundColor = [UIColor orangeColor];
    tempView.frame = CGRectMake(275, 567, 100, 100);
    [self.view addSubview:tempView];
    
//    UISwitch *s = [[UISwitch alloc] init];
//    UIStepper *stepper = [[UIStepper alloc] init];
//    [self.view addSubview:stepper];
//    [self.view addSubview:s];
//
//    UISlider *slider = [[UISlider alloc] init];
//    [self.view insertSubview:slider belowSubview:s];
//    [self.view insertSubview:slider aboveSubview:stepper];
//
//    NSLog(@"before --- %@", self.view.subviews);
//
//
//    NSLog(@"after --- %@", self.view.subviews);
    
//    [self.label removeFromSuperview];
//    
//    [[self.view viewWithTag:99] removeFromSuperview];
}

@end

 

- (IBAction)click:(UIButton *)sender {
　　//    if (sender.tag == 20) {
　　　　//        NSLog(@"")
　　　　//    } else if (sender.tag == 10) {
　　　　//    
　　//    }
}

 

#import "ViewController.h"

@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIView *shopsView;
@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    [self addButtonWithImage:@"add" highImage:@"add_highlighted" disableImage:@"add_disabled" frame:CGRectMake(30, 30, 50, 50) 
　　　　　　　　　　　　　　 tag:10 action:@selector(add)];
    [self addButtonWithImage:@"remove" highImage:@"remove_highlighted" disableImage:@"remove_disabled" frame:CGRectMake(270, 30, 50, 50) 
　　　　　　　　　　　　　　 tag:20 action:@selector(remove)];
}

#pragma mark 添加按钮
- (void)addButtonWithImage:(NSString *)image highImage:(NSString *)highImage disableImage:(NSString *)disableImage frame:(CGRect)frame 
　　　　　　　　　　　　　 tag:(NSInteger)tag action:(SEL)action
{
    // 创建按钮
    UIButton *btn = [[UIButton alloc] init];
    // 设置背景图片
    [btn setBackgroundImage:[UIImage imageNamed:image] forState:UIControlStateNormal];
    [btn setBackgroundImage:[UIImage imageNamed:highImage] forState:UIControlStateHighlighted];
    [btn setBackgroundImage:[UIImage imageNamed:disableImage] forState:UIControlStateDisabled];
    // 设置位置和尺寸
    btn.frame = frame;
    // 监听按钮点击
    [btn addTarget:self action:action forControlEvents:UIControlEventTouchUpInside];
    // 绑定tag标记
    btn.tag = tag;
    // 添加按钮
    [self.view addSubview:btn];
}

#pragma mark 添加
- (void)add
{
    // 添加图片
    UIImageView *iconView = [[UIImageView alloc] init];
    iconView.image = [UIImage imageNamed:@"danjianbao"];
    iconView.frame = CGRectMake(0, 0, 50, 50);
    [self.shopsView addSubview:iconView];
    
    // 添加文字
    UILabel *label = [[UILabel alloc] init];
    label.text = @"单肩包";
    label.frame = CGRectMake(0, 50, 50, 20);
    label.font = [UIFont systemFontOfSize:11];
    label.textAlignment = NSTextAlignmentCenter;
    [self.shopsView addSubview:label];
}

#pragma mark 删除
- (void)remove
{
    NSLog(@"删除。。。。");
}

- (void)click:(UIButton *)btn
{
    if (btn.tag == 10) {
        NSLog(@"添加");
    } else {
        NSLog(@"删除");
    }
}

@end