iOS程序-使用xib的owner

1.添加绿色的view，MJViewController对象作为owner

    NSArray *array = [[NSBundle mainBundle] loadNibNamed:@"MyView" owner:self options:nil];    

    UIView *greenView = array[0];

    [self.view addSubview:greenView];

2.添加蓝色的view，Dog对象作为owner

    UIView *blueView = [[NSBundle mainBundle] loadNibNamed:@"HisView" owner:_d2 options:nil][0];

    blueView.center = CGPointMake(160, 200);

    [self.view addSubview:blueView];

3.owner的机制为代理模式

方法/步骤

• 1
  MJViewController.h
  
  
  #import <UIKit/UIKit.h>
  
  @interface MJViewController : UIViewController
  
  - (IBAction)leftClick;
  - (IBAction)rightClick;
  
  @end
  
• 2
  MJViewController.m
  
  
  #import "MJViewController.h"
  #import "Dog.h"
  
  @interface MJViewController ()
  {
      Dog *_d1;
      Dog *_d2;
  }
  @end
  
  @implementation MJViewController
  
  - (void)viewDidLoad
  {
      [super viewDidLoad];
      
      // 1.加载xib文件
      NSArray *array = [[NSBundle mainBundle] loadNibNamed:@"MyView" owner:self options:nil];
      
      UIView *greenView = array[0];
      
      // 2.添加到控制器的view里面去
      [self.view addSubview:greenView];
      
      // 3.
  //    UIButton *left = (UIButton *)[greenView viewWithTag:10];
  //    [left addTarget:self action:@selector(leftClick) forControlEvents:UIControlEventTouchUpInside];
  //    
  //    UIButton *right = (UIButton *)[greenView viewWithTag:20];
  //    [right addTarget:self action:@selector(rightClick) forControlEvents:UIControlEventTouchUpInside];
      
      _d1 = [[Dog alloc] init];
      _d1.age = 10;
      
      _d2 = [[Dog alloc] init];
      _d2.age = 20;
      
      // 添加蓝色的view
      UIView *blueView = [[NSBundle mainBundle] loadNibNamed:@"HisView" owner:_d2 options:nil][0];
      blueView.center = CGPointMake(160, 200);
      [self.view addSubview:blueView];
  }
  
  - (void)leftClick
  {
      NSLog(@"left------");
  }
  
  - (void)rightClick
  {
      NSLog(@"right------");
  }
  @end
  
• 3
  Dog.h
  
  
  #import <Foundation/Foundation.h>
  
  @interface Dog : NSObject
  
  @property (nonatomic, assign) int age;
  
  - (IBAction)btnClick;
  @end
  
• 4
  Dog.m
  
  
  #import "Dog.h"
  
  @implementation Dog
  - (void)btnClick
  {
      NSLog(@"%d岁的狗在汪汪.....", _age);
  }
  
  /*
  - (NSArray *)loadNibNamed:(NSString *)name owner:(id)owner options:(NSDictionary *)options
  {
  
      // 解析HisView.xib文件 
  
      //   创建Objects下面的所有对象
      // 创建view
      UIView *blue = [[UIView alloc] init];
      blue.backgroundColor = [UIColor blueColor];
      //....设置其他属性
  
      // 创建按钮
      UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
      [btn setTitle:@"我是按钮" forState:UIControlStateNormal];
      [btn addTarget:owner action:@selector(btnClick) forControlEvents:UIControlEventTouchUpInside];
  //    ....设置其他属性
      
      [blue addSubview:btn];
      
      // 创建文本输入框
      UITextField *field = [[UITextField alloc] init];
      // ... 设置其他属性
      
      return @[ blue, field];
  }
   
   */
  
  @end
  
• 5
  MyView.xib
  
• 6
  HisView.xib