对的代码进行进一步优化。

　　新建一个 UIView 的子类，并命名为 WJQAppView ，将 appxib.xib 中的 UIView 对象与新建的视图类进行关联。

　　 WJQAppView 类中声明3个 IBOutlet 属性，与 appxib.xib 中的视图对象包含的 UIImageView 、 UILabel 和 UIButton 建立连接。 WJQAppView 头文件代码如下所示：

1 //WJQAppView.h2 @interface WJQAppView : UIView3 @property (weak, nonatomic) IBOutlet UIImageView *appImage;4 @property (weak, nonatomic) IBOutlet UILabel *appLabel;5 @property (weak, nonatomic) IBOutlet UIButton *appButton;6 @end

　　最后，修改 ViewController.m 中的 viewDidLoad 方法：

1 //ViewController.m 2 - (void)viewDidLoad { 3     [super viewDidLoad]; 4      5     int totalColumn = 3;        //3列 6     CGFloat margin = (self.view.frame.size.width - totalColumn*appViewWidth) / (totalColumn + 1); 7     int count = self.apps.count; 8     NSLog(@"%d", count); 9     10     for (int i = 0; i < count; i++) {11         int row = i/totalColumn;        //行号，从0开始12         int column = i%totalColumn;     //列号，从0开始13         CGFloat appViewX = margin + (margin + appViewWidth) * column;       //子视图的X坐标14         CGFloat appViewY = margin + (margin + appViewHeight) * row;      //子视图的Y坐标15         WJQAppInfo *appInfo = self.apps[i];16         17         //创建UIView控件18         NSArray *appArray = [[NSBundle mainBundle] loadNibNamed:@"appxib" owner:nil options:nil];19         WJQAppView *appView = [appArray firstObject];20         appView.frame = CGRectMake(appViewX, appViewY, appViewWidth, appViewHeight);21         appView.appImage.image = appInfo.image;      //设置图片22         appView.appLabel.text = appInfo.desc;        //设置名称23         appView.appButton.tag = i;                   //设置按钮的序号24         [appView.appButton addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];25         26         [self.view addSubview:appView];27     }28 }

 

参考博客：

实例代码：