IOS开发之——使用模型设置自定义视图的显示(34)
一 概述
本文介绍自定义视图和自定义模型相关的操作
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如何创建自定义视图
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使用模型设置自定义视图的显示
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二 创建自定义视图
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依次点击:Xcode——>New File——>Cocoa Touch Class,创建的文件继承UIView
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点击AppView.xib,在Custom Class的Class下拉列表中选择AppView
三 代码
3.1 OC模式下
AppInfo.h
#import <Foundation/Foundation.h> #import <UIKit/UIKit.h> @interface AppInfo : NSObject @property (nonatomic,copy) NSString *name; @property (nonatomic,copy) NSString *icon; @property (nonatomic,strong,readonly) UIImage *image; /**使用字典实例化模型 */ -(id)initWithDict:(NSDictionary *)dict; /**类方法,可以快速示例化一个对象 */ +(id)appInfoWithDict:(NSDictionary *)dict; /**返回所有plist中的数据模型数组*/ +(NSArray *)appList; @end
AppInfo.m
#import "AppInfo.h" @implementation AppInfo @synthesize image=_image; - (UIImage *)image { if (_image==nil) { _image=[UIImage imageNamed:self.icon]; } return _image; } - (id)initWithDict:(NSDictionary *)dict { self = [super init]; if (self) { [self setValuesForKeysWithDictionary:dict]; } return self; } +(id)appInfoWithDict:(NSDictionary *)dict { return [[self alloc]initWithDict:dict]; } +(NSArray *)appList { NSArray *array=[NSArray arrayWithContentsOfFile:[[NSBundle mainBundle]pathForResource:@"app.plist" ofType:nil]]; //创建一个临时数组 NSMutableArray *arrayM=[NSMutableArray array]; //遍历数组,一次类型转换 for (NSDictionary *dict in array) { AppInfo *appInfo=[AppInfo appInfoWithDict:dict]; [arrayM addObject:appInfo]; } return arrayM; } @end
AppView.h
#import <UIKit/UIKit.h> #import "AppInfo.h" @interface AppView : UIView //自定义视图中显示的数据来源是数据模型,使用模型设置自定义视图的显示 @property (nonatomic,strong) AppInfo *appInfo; @end
AppView.m
#import "AppView.h" #import "AppInfo.h" @interface AppView() @property (weak, nonatomic) IBOutlet UIImageView *iconView; @property (weak, nonatomic) IBOutlet UILabel *label; @end @implementation AppView //利用setter方法设置视图的界面显示 -(void)setAppInfo:(AppInfo *)appInfo { _appInfo=appInfo; self.label.text=appInfo.name; self.iconView.image=appInfo.image; } -(IBAction)click:(UIButton *)button { NSLog(@"%s--%ld",__func__,button.tag); //添加一个UILabel到界面上 UILabel *label=[[UILabel alloc]initWithFrame:CGRectMake(100, 440, 160, 40)]; //数值是0表示黑色,1表示纯白 alpha表示透明度 label.backgroundColor=[UIColor colorWithWhite:0.0 alpha:0.2]; label.text=self.appInfo.name; label.textAlignment=NSTextAlignmentCenter; [self.superview addSubview:label]; label.alpha=0.0; //禁用按钮 button.enabled=NO; //动画效果,收尾式动画,修改对象的属性,frame,bounds,alpha [UIView animateWithDuration:1.0f animations:^{ //要修改的动画属性 label.alpha=1.0; } completion:^(BOOL finished) { //动画完成后,所做的操作 [UIView animateWithDuration:1.0f animations: ^{ label.alpha=0.0; } completion:^(BOOL finished) { [label removeFromSuperview]; button.enabled=YES; }]; }]; } @end
ViewController.m
#import "ViewController.h" #import "AppInfo.h" #import "AppView.h" //九宫格常量 #define kAppViewW 80 //宽 #define kAppViewH 90 //高 #define kColCount 3 //列 #define kStartY 20 @interface ViewController () @property (nonatomic,strong) NSArray *appList; @end @implementation ViewController - (NSArray *)appList { if (_appList==nil) { //将临时数组为属性赋值 _appList=[AppInfo appList]; } return _appList; } - (void)viewDidLoad { [super viewDidLoad]; //九宫格界面 CGFloat marginX=(self.view.bounds.size.width-kColCount*kAppViewW)/(kColCount+1); CGFloat marginY=10; for (int i=0; i<self.appList.count; i++) { //行 // 0,1,2 ->0 //3,4,5->1 int row=i/kColCount; //列 //0,3,6->0 //1,4,7->1 //2,5,8->2 int col=i%kColCount; CGFloat x=marginX+col*(marginX+kAppViewW); CGFloat y=kStartY+ marginY+row*(marginY+kAppViewH); //从XIB来家长自定义视图 AppView *appView=[[[NSBundle mainBundle]loadNibNamed:@"AppView" owner:nil options:nil] lastObject]; //设置视图的位置 appView.frame=CGRectMake(x, y, kAppViewW, kAppViewH); [self.view addSubview:appView]; //AppInfo *appInfo=self.appList[i]; appView.appInfo=self.appList[i]; } } @end