1  // 创建下载成功消息框 2     CGFloat labelWidth = 200; 3     CGFloat labelHeight = 50; 4     CGFloat labelX = (self.view.frame.size.width - labelWidth) / 2; 5     CGFloat labelY = (self.view.frame.size.height - labelHeight) / 2; 6     UILabel *successMsgLabel = [[UILabel alloc] initWithFrame:CGRectMake(labelX, labelY, labelWidth, labelHeight)]; 7     8     // 设置圆角矩形样式 9     successMsgLabel.layer.cornerRadius = 10.0;10     successMsgLabel.layer.masksToBounds = YES;11    12     // 设置全透明隐藏13     successMsgLabel.alpha = 0;14    15     successMsgLabel.textColor = [UIColor whiteColor];16     successMsgLabel.backgroundColor = [UIColor grayColor];17     [successMsgLabel setTextAlignment:NSTextAlignmentCenter];18     successMsgLabel.tag = 10;19   20     [self.view addSubview:successMsgLabel];

 1 // 点击下载按钮 2 - (IBAction)onDownloadButtonClick { 3     // 更改“下载”按钮样式 4     [self.downloadButton setTitle:@"已下载" forState:UIControlStateDisabled]; 5     self.downloadButton.enabled = NO; 6    7     // 拿到消息框 8     UILabel *successMsgLabel = [self.superview viewWithTag:10]; 9     successMsgLabel.text = [NSString stringWithFormat:@"成功安装了%@", self.appData.name];10     successMsgLabel.alpha = 0.7;11    12     // 使用动画13     [UIView beginAnimations:nil context:nil];14     [UIView setAnimationDuration:2];15     successMsgLabel.alpha = 0;16     [UIView commitAnimations];17 }

1 // 存储主View的引用2 @property (nonatomic, weak) UIView *vcView;

 1  for (int index=0; index<self.apps.count; index++) { 2         App *appData =http://www.mamicode.com/ self.apps[index]; 3  4         // 1.创建View 5         AppView *appView = [AppView appViewWithApp:appData]; 6         7         // 2.定义每个app的位置、尺寸 8         CGFloat appX = marginX + column * (marginX + APP_WIDTH); 9         CGFloat appY = marginY + row * (marginY + APP_HEIGHT);10         appView.frame = CGRectMake(appX, appY, APP_WIDTH, APP_HEIGHT);11        12         // 设置每个app控件view的主view引用13         appView.vcView = self.view;14        15         // 3.加入此app信息到总view16         [self.view addSubview:appView];17        18         column++;19         if (column == appColumnCount) {20             column = 0;21             row++;22         }

 1 // 点击下载按钮 2 - (IBAction)onDownloadButtonClick { 3     // 更改“下载”按钮样式 4     [self.downloadButton setTitle:@"已下载" forState:UIControlStateDisabled]; 5     self.downloadButton.enabled = NO; 6     7     // 创建消息框 8     UILabel *successMsgLabel = [self.vcView viewWithTag:10]; 9     successMsgLabel.text = [NSString stringWithFormat:@"成功安装了%@", self.appData.name];10     successMsgLabel.alpha = 0.7;11    12     // 使用动画13     [UIView beginAnimations:nil context:nil];14     [UIView setAnimationDuration:2];15     successMsgLabel.alpha = 0;16     [UIView commitAnimations];17 }

1 // 将“下载”按钮控件移到 .h 文件中暴露2 @property (weak, nonatomic) IBOutlet UIButton *downloadButton;

 1 // 控制器创建“下载”按钮点击事件 2 - (IBAction)onAppViewDownloadButtonClick:(UIButton *) downloadButton { 3     // 更改“下载”按钮样式 4     [downloadButton setTitle:@"已下载" forState:UIControlStateDisabled]; 5     downloadButton.enabled = NO; 6     7     // 创建消息框 8     UILabel *successMsgLabel = [self.view viewWithTag:99]; 9    10     App *app = self.apps[downloadButton.tag];11     successMsgLabel.text = [NSString stringWithFormat:@"成功安装了%@", app.name];12     successMsgLabel.alpha = 0.7;13    14     // 使用动画15     [UIView beginAnimations:nil context:nil];16     [UIView setAnimationDuration:2];17     successMsgLabel.alpha = 0;18     [UIView commitAnimations];19 }20 21 @end

 1  for (int index=0; index<self.apps.count; index++) { 2         App *appData =http://www.mamicode.com/ self.apps[index]; 3  4         // 1.创建View 5         AppView *appView = [AppView appViewWithApp:appData]; 6         7         // 2.定义每个app的位置、尺寸 8         CGFloat appX = marginX + column * (marginX + APP_WIDTH); 9         CGFloat appY = marginY + row * (marginY + APP_HEIGHT);10         appView.frame = CGRectMake(appX, appY, APP_WIDTH, APP_HEIGHT);11        12         // 存储每个AppView对应的AppData数据索引在tag中13         appView.downloadButton.tag = index;14        15         // 绑定每个AppView中的“下载”按钮点击事件16         [appView.downloadButton addTarget:self action:@selector(onAppViewDownloadButtonClick:) forControlEvents:UIControlEventTouchUpInside];17  18         // 3.加入此app信息到总view19         [self.view addSubview:appView];20        21         column++;22         if (column == appColumnCount) {23             column = 0;24             row++;25         }26     }

1 // 定义代理的协议2 @protocol AppViewDelegate <NSObject>3 // “下载”按钮被点击事件4 @optional5 - (void) appViewClickedDownloadButton:(AppView *) appView;6 @end

1 @interface AppView : UIView2 // 代理3 @property(nonatomic, weak) id<AppViewDelegate> delegate;4 ...5 @end

1 ViewController.m2 @interface ViewController () <AppViewDelegate>3 ...4 @end

 1 // “下载”按钮点击的代理方法 2 - (void)appViewClickedDownloadButton:(AppView *)appView { 3     // 创建下载成功消息框 4     CGFloat labelWidth = 200; 5     CGFloat labelHeight = 50; 6     CGFloat labelX = (self.view.frame.size.width - labelWidth) / 2; 7     CGFloat labelY = (self.view.frame.size.height - labelHeight) / 2; 8     UILabel *successMsgLabel = [[UILabel alloc] initWithFrame:CGRectMake(labelX, labelY, labelWidth, labelHeight)]; 9    10     // 设置圆角矩形样式11     successMsgLabel.layer.cornerRadius = 10.0;12     successMsgLabel.layer.masksToBounds = YES;13    14     // 设置全透明隐藏15     successMsgLabel.alpha = 0;16    17     successMsgLabel.textColor = [UIColor whiteColor];18     successMsgLabel.backgroundColor = [UIColor grayColor];19     [successMsgLabel setTextAlignment:NSTextAlignmentCenter];20 21     successMsgLabel.text = [NSString stringWithFormat:@"成功安装了%@", appView.appData.name];22     successMsgLabel.alpha = 0.7;23    24     // 使用动画25     [UIView beginAnimations:nil context:nil];26     [UIView setAnimationDuration:2];27     successMsgLabel.alpha = 0;28     [UIView commitAnimations];29    30     [self.view addSubview:successMsgLabel];31 }

 1   for (int index=0; index<self.apps.count; index++) { 2         App *appData =http://www.mamicode.com/ self.apps[index]; 3  4         // 1.创建View 5         AppView *appView = [AppView appViewWithApp:appData]; 6         7         // 2.定义每个app的位置、尺寸 8         CGFloat appX = marginX + column * (marginX + APP_WIDTH); 9         CGFloat appY = marginY + row * (marginY + APP_HEIGHT);10         appView.frame = CGRectMake(appX, appY, APP_WIDTH, APP_HEIGHT);11        12         // 设置代理13         appView.delegate = self;14        15         // 3.加入此app信息到总view16         [self.view addSubview:appView];17        18         column++;19         if (column == appColumnCount) {20             column = 0;21             row++;22         }23     }

 1 // 点击下载按钮 2 - (IBAction)onDownloadButtonClick { 3     // 更改“下载”按钮样式 4     [self.downloadButton setTitle:@"已下载" forState:UIControlStateDisabled]; 5     self.downloadButton.enabled = NO; 6  7     // 通知代理 8     // 检查是否实现了代理方法 9     if ([self.delegate respondsToSelector:@selector(appViewClickedDownloadButton:)]) {10         [self.delegate appViewClickedDownloadButton:self];11     }12 }

 1 App.h 2 // 3 //  App.h 4 //  01-应用管理 5 // 6 //  Created by hellovoidworld on 14/11/25. 7 //  Copyright (c) 2014年 hellovoidworld. All rights reserved. 8 // 9 10 #import <Foundation/Foundation.h>11 12 @interface App : NSObject13 14 /**15 copy : NSString16 strong: 一般对象17 weak: UI控件18 assign: 基本数据类型19 */20 21 /**22 名称23 */24 @property(nonatomic, copy) NSString *name;25 26 /**27 图标28 */29 @property(nonatomic, copy) NSString *icon;30 31 /**32 自定义构造方法33 通过字典来初始化模型对象34 */35 - (instancetype) initWithDictionary:(NSDictionary *) dictionary;36 37 + (instancetype) appWithDictionary:(NSDictionary *) dictionary;38 39 @end

 1 // 2 //  App.m 3 //  01-应用管理 4 // 5 //  Created by hellovoidworld on 14/11/25. 6 //  Copyright (c) 2014年 hellovoidworld. All rights reserved. 7 // 8  9 #import "App.h"10 11 #define ICON_KEY @"icon"12 #define NAME_KEY @"name"13 14 @implementation App15 16 - (instancetype) initWithDictionary:(NSDictionary *) dictionary {17     if (self = [super init]) {18         self.name = dictionary[NAME_KEY];19         self.icon = dictionary[ICON_KEY];20     }21    22     return self;23 }24 25 26 + (instancetype) appWithDictionary:(NSDictionary *) dictionary {27     // 使用self代表类名代替真实类名，防止子类调用出错28     return [[self alloc] initWithDictionary:dictionary];29 }30 31 @end

 1 AppView.h 2 // 3 //  AppView.h 4 //  01-应用管理 5 // 6 //  Created by hellovoidworld on 14/11/25. 7 //  Copyright (c) 2014年 hellovoidworld. All rights reserved. 8 // 9 10 #import <UIKit/UIKit.h>11 12 @class App, AppView;13 14 // 定义代理的协议15 @protocol AppViewDelegate <NSObject>16 // “下载”按钮被点击事件17 @optional18 - (void) appViewClickedDownloadButton:(AppView *) appView;19 @end20 21 @interface AppView : UIView22 23 // 代理24 @property(nonatomic, weak) id<AppViewDelegate> delegate;25 26 // 在Controller和View之间传输的Model数据27 @property(nonatomic, strong) App *appData;28 29 30 // 自定义将Model数据加载到View的构造方法31 - (instancetype) initWithApp:(App *) appData;32 // 自定义构造的类方法33 + (instancetype) appViewWithApp:(App *) appData;34 // 返回一个不带Model数据的类构造方法35 + (instancetype) appView;36 37 38 @end

 1 // 2 //  AppView.m 3 //  01-应用管理 4 // 5 //  Created by hellovoidworld on 14/11/25. 6 //  Copyright (c) 2014年 hellovoidworld. All rights reserved. 7 // 8  9 #import "AppView.h"10 #import "App.h"11 12 // 封装私有属性13 @interface AppView()14 15 // 封装View中的控件，只允许自己访问16 @property (weak, nonatomic) IBOutlet UIImageView *iconView;17 @property (weak, nonatomic) IBOutlet UILabel *nameLabel;18 @property (weak, nonatomic) IBOutlet UIButton *downloadButton;19 20 21 22 - (IBAction)onDownloadButtonClick;23 24 @end25 26 @implementation AppView27 28 - (void)setAppData:(App *)appData {29     // 1.赋值Medel成员30     _appData =http://www.mamicode.com/ appData;31    32     // 2.设置图片33     self.iconView.image = [UIImage imageNamed:appData.icon];34     // 3.设置名字35     self.nameLabel.text = appData.name;36 }37 38 // 自定义将Model数据加载到View的构造方法39 - (instancetype) initWithApp:(App *) appData {40     // 1.从NIB取得控件41     UINib *nib = [UINib nibWithNibName:@"app" bundle:[NSBundle mainBundle]];42     NSArray *viewArray = [nib instantiateWithOwner:nil options:nil];43     AppView *appView = [viewArray lastObject];44    45     // 2.加载Model46     appView.appData =http://www.mamicode.com/ appData;47    48     return appView;49 }50 51 // 自定义构造的类方法52 + (instancetype) appViewWithApp:(App *) appData {53     return [[self alloc] initWithApp:appData];54 }55 56 // 返回一个不带Model数据的类构造方法57 + (instancetype) appView {58     return [self appViewWithApp:nil];59 }60 61 // 点击下载按钮62 - (IBAction)onDownloadButtonClick {63     // 更改“下载”按钮样式64     [self.downloadButton setTitle:@"已下载" forState:UIControlStateDisabled];65     self.downloadButton.enabled = NO;66 67     // 通知代理68     // 检查是否实现了代理方法69     if ([self.delegate respondsToSelector:@selector(appViewClickedDownloadButton:)]) {70         [self.delegate appViewClickedDownloadButton:self];71     }72 }73 74 @end

  1 //  2 //  ViewController.m  3 //  01-应用管理  4 //  5 //  Created by hellovoidworld on 14/11/24.  6 //  Copyright (c) 2014年 hellovoidworld. All rights reserved.  7 //  8   9 #import "ViewController.h" 10 #import "App.h" 11 #import "AppView.h" 12  13 #define ICON_KEY @"icon" 14 #define NAME_KEY @"name" 15 #define APP_WIDTH 85 16 #define APP_HEIGHT 90 17 #define MARGIN_HEAD 20 18 #define ICON_WIDTH 50 19 #define ICON_HEIGHT 50 20 #define NAME_WIDTH APP_WIDTH 21 #define NAME_HEIGHT 20 22 #define DOWNLOAD_WIDTH (APP_WIDTH - 20) 23 #define DOWNLOAD_HEIGHT 20 24  25 @interface ViewController () <AppViewDelegate> 26  27 /** 存放应用信息 */ 28 @property(nonatomic, strong) NSArray *apps; // 应用列表 29  30 @end 31  32 @implementation ViewController 33  34 - (void)viewDidLoad { 35     [super viewDidLoad]; 36     // Do any additional setup after loading the view, typically from a nib. 37     38     [self loadApps]; 39 } 40  41 - (void)didReceiveMemoryWarning { 42     [super didReceiveMemoryWarning]; 43     // Dispose of any resources that can be recreated. 44 } 45  46 #pragma mark 取得应用列表 47 - (NSArray *) apps { 48     if (nil == _apps) { 49         // 1.获得plist的全路径 50         NSString *path = [[NSBundle mainBundle] pathForResource:@"app.plist" ofType:nil]; 51         52         // 2.加载数据 53         NSArray *dictArray  = [NSArray arrayWithContentsOfFile:path]; 54         55         // 3.将dictArray里面的所有字典转成模型，放到新数组中 56         NSMutableArray *appArray = [NSMutableArray array]; 57         for (NSDictionary *dict in dictArray) { 58             // 3.1创建模型对象 59             App *app = [App appWithDictionary:dict]; 60             61             // 3.2 添加到app数组中 62             [appArray addObject:app]; 63         } 64         65         _apps = appArray; 66     } 67  68     return _apps; 69 } 70  71 #pragma mark 加载全部应用列表 72 - (void) loadApps { 73     int appColumnCount = [self appColumnCount]; 74     int appRowCount = [self appRowCount]; 75     76     CGFloat marginX = (self.view.frame.size.width - APP_WIDTH * appColumnCount) / (appColumnCount + 1); 77     CGFloat marginY = (self.view.frame.size.height - APP_HEIGHT * appRowCount) / (appRowCount + 1) + MARGIN_HEAD; 78     79     int column = 0; 80     int row = 0; 81     for (int index=0; index<self.apps.count; index++) { 82         App *appData =http://www.mamicode.com/ self.apps[index]; 83  84         // 1.创建View 85         AppView *appView = [AppView appViewWithApp:appData]; 86         87         // 2.定义每个app的位置、尺寸 88         CGFloat appX = marginX + column * (marginX + APP_WIDTH); 89         CGFloat appY = marginY + row * (marginY + APP_HEIGHT); 90         appView.frame = CGRectMake(appX, appY, APP_WIDTH, APP_HEIGHT); 91         92         // 设置代理 93         appView.delegate = self; 94         95         // 3.加入此app信息到总view 96         [self.view addSubview:appView]; 97         98         column++; 99         if (column == appColumnCount) {100             column = 0;101             row++;102         }103     }104    105 }106 107 108 #pragma mark 计算列数109 - (int) appColumnCount {110     int count = 0;111     count = self.view.frame.size.width / APP_WIDTH;112    113     if ((int)self.view.frame.size.width % (int)APP_WIDTH == 0) {114         count--;115     }116    117     return count;118 }119 120 #pragma mark 计算行数121 - (int) appRowCount {122     int count = 0;123     count = (self.view.frame.size.height - MARGIN_HEAD) / APP_HEIGHT;124    125     if ((int)(self.view.frame.size.height - MARGIN_HEAD) % (int)APP_HEIGHT == 0) {126         count--;127     }128    129     return count;130 }131 132 // “下载”按钮点击的代理方法133 - (void)appViewClickedDownloadButton:(AppView *)appView {134     // 创建下载成功消息框135     CGFloat labelWidth = 200;136     CGFloat labelHeight = 50;137     CGFloat labelX = (self.view.frame.size.width - labelWidth) / 2;138     CGFloat labelY = (self.view.frame.size.height - labelHeight) / 2;139     UILabel *successMsgLabel = [[UILabel alloc] initWithFrame:CGRectMake(labelX, labelY, labelWidth, labelHeight)];140    141     // 设置圆角矩形样式142     successMsgLabel.layer.cornerRadius = 10.0;143     successMsgLabel.layer.masksToBounds = YES;144    145     // 设置全透明隐藏146     successMsgLabel.alpha = 0;147    148     successMsgLabel.textColor = [UIColor whiteColor];149     successMsgLabel.backgroundColor = [UIColor grayColor];150     [successMsgLabel setTextAlignment:NSTextAlignmentCenter];151 152     successMsgLabel.text = [NSString stringWithFormat:@"成功安装了%@", appView.appData.name];153     successMsgLabel.alpha = 0.7;154    155     // 使用动画156     [UIView beginAnimations:nil context:nil];157     [UIView setAnimationDuration:2];158     successMsgLabel.alpha = 0;159     [UIView commitAnimations];160    161     [self.view addSubview:successMsgLabel];162 }163 164 @end