IOS 读取xib里的子控件

Posted 2020-08-31 守望星空

interface ViewController ()
/**获取.plist数据*/
@property (nonatomic,strong) NSArray *aps;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
  
    
    //九宫格的总列数
    int totalColumns=5;
    
    //1.1个格子的尺寸
    CGFloat appW=50;
    CGFloat appH=60;
    
    //2.计算间隙 ＝（控制器view的宽度 -5*应用宽度）/应用宽度+1
    CGFloat marginX=(self.view.frame.size.width-totalColumns*appW)/(totalColumns+1);
    CGFloat marginY=55;
    //3.要的应用个数创建对应的格子
    
    for (int index=0; index<self.aps.count; index++)
    {
        NSBundle *bundle=[NSBundle mainBundle];
        //读取xib文件（会创建AppsView.xib中的描述的所有对象。并且按顺序放到数组中返回） 
         NSArray *objs=[bundle loadNibNamed:@"AppsView" owner:nil options:nil];  
         UIView *appView=[objs lastObject]; 

      //添加view 
      [self.view addSubview:appView]; 

      //设置frame 
      int row=index/ totalColumns; int col=index% totalColumns; 

     //计算x和y CGFloat appx=marginX+col*(appW+marginX); 
      CGFloat appY=marginY+row *(appH + marginY); 
      appView.frame=CGRectMake(appx, appY, appW, appH);
     //设置数据 
     Apps *app=self.aps[index]; 

    //设置图片(xib中的appView取子控件 UIImageView) 

    // UIImageView *iconView=appView.subviews[0]; //方式1 
     UIImageView *iconView=(UIImageView *)[appView viewWithTag:10];//方式2 
     iconView.image=[UIImage imageNamed:app.icon]; 

//设置名称(xib中的appView取子控件 UILabel) 

// UILabel *nameLabel=appView.subviews[1];//方式1

   UILabel *nameLabel=(UILabel *)[appView viewWithTag:20];//方式2  
   nameLabel.text=app.name; 
  }

 }