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  11 #define APP_WIDTH 85 12 #define APP_HEIGHT 90 13 #define MARGIN_HEAD 20 14 #define ICON_WIDTH 50 15 #define ICON_HEIGHT 50 16 #define NAME_WIDTH APP_WIDTH 17 #define NAME_HEIGHT 20 18 #define DOWNLOAD_WIDTH (APP_WIDTH - 20) 19 #define DOWNLOAD_HEIGHT 20 20  21 @interface ViewController () 22  23 /** 存放应用信息 */ 24 @property(nonatomic, strong) NSArray *apps; // 应用列表 25  26 @end 27  28 @implementation ViewController 29  30 - (void)viewDidLoad { 31     [super viewDidLoad]; 32     // Do any additional setup after loading the view, typically from a nib. 33     34     [self loadApps]; 35 } 36  37 - (void)didReceiveMemoryWarning { 38     [super didReceiveMemoryWarning]; 39     // Dispose of any resources that can be recreated. 40 } 41  42 #pragma mark 取得应用列表 43 - (NSArray *) apps { 44     if (nil == _apps) { 45         NSString *path = [[NSBundle mainBundle] pathForResource:@"app.plist" ofType:nil]; 46         _apps = [NSArray arrayWithContentsOfFile:path]; 47     } 48  49     return _apps; 50 } 51  52 #pragma mark 加载全部应用列表 53 - (void) loadApps { 54     int appColumnCount = [self appColumnCount]; 55     int appRowCount = [self appRowCount]; 56     57     CGFloat marginX = (self.view.frame.size.width - APP_WIDTH * appColumnCount) / (appColumnCount + 1); 58     CGFloat marginY = (self.view.frame.size.height - APP_HEIGHT * appRowCount) / (appRowCount + 1) + MARGIN_HEAD; 59     60     int column = 0; 61     int row = 0; 62     for (int index=0; index<self.apps.count; index++) { 63         NSDictionary *appData =http://www.mamicode.com/ self.apps[index]; 64         65         // 每个app信息 66         UIView *appView = [[UIView alloc] init]; 67         68         CGFloat appX = marginX + column * (marginX + APP_WIDTH); 69         CGFloat appY = marginY + row * (marginY + APP_HEIGHT); 70         71         appView.frame = CGRectMake(appX, appY, APP_WIDTH, APP_HEIGHT); 72         73         // 1.设置APP图片 74         UIImageView *iconView = [[UIImageView alloc] init]; 75         76         CGFloat iconMarginX = (appView.frame.size.width - ICON_WIDTH) / 2; 77         CGFloat iconMarginY = 0; 78         iconView.frame = CGRectMake(iconMarginX, iconMarginY, ICON_WIDTH, ICON_HEIGHT); 79         80         iconView.image = [UIImage imageNamed:appData[@"icon"]]; 81         [appView addSubview:iconView]; 82         83         // 2.设置APP名字 84         UILabel  *nameLabel = [[UILabel alloc] init]; 85         nameLabel.text = appData[@"name"]; 86         CGFloat nameMarginX = (appView.frame.size.width - NAME_WIDTH) / 2; 87         CGFloat nameMarginY = iconMarginY + ICON_HEIGHT; 88         nameLabel.frame = CGRectMake(nameMarginX, nameMarginY, NAME_WIDTH, NAME_HEIGHT); 89         [nameLabel setFont:[UIFont systemFontOfSize:16]]; 90         [nameLabel setTextAlignment:NSTextAlignmentCenter]; 91         [appView addSubview:nameLabel]; 92         93         // 3.设置下载按钮 94         UIButton *downloadButton = [UIButton buttonWithType:UIButtonTypeCustom]; 95         CGFloat downloadMarginX = (appView.frame.size.width - DOWNLOAD_WIDTH) / 2; 96         CGFloat downloadMarginY = nameMarginY + NAME_HEIGHT; 97         downloadButton.frame = CGRectMake(downloadMarginX, downloadMarginY, DOWNLOAD_WIDTH, DOWNLOAD_HEIGHT); 98         99         UIImage *downloadNormalImage = [UIImage imageNamed:@"buttongreen"];100         [downloadButton setBackgroundImage:downloadNormalImage forState:UIControlStateNormal];101        102         UIImage *downloadHighlightedImage = [UIImage imageNamed:@"buttongreen_highlighted"];103         [downloadButton setBackgroundImage:downloadHighlightedImage forState:UIControlStateHighlighted];104        105         [downloadButton setTitle:@"下载" forState:UIControlStateNormal];106        107         // 不要直接取出titleLabel属性进行操作，因为这样就不能为全部状态进行设置108         [downloadButton.titleLabel setFont:[UIFont systemFontOfSize:13]];109        110         [appView addSubview:downloadButton];111        112        113         [self.view addSubview:appView];114        115         column++;116         if (column == appColumnCount) {117             column = 0;118             row++;119         }120     }121 }122 123 #pragma mark 计算列数124 - (int) appColumnCount {125     int count = 0;126     count = self.view.frame.size.width / APP_WIDTH;127    128     if ((int)self.view.frame.size.width % (int)APP_WIDTH == 0) {129         count--;130     }131    132     return count;133 }134 135 #pragma mark 计算行数136 - (int) appRowCount {137     int count = 0;138     count = (self.view.frame.size.height - MARGIN_HEAD) / APP_HEIGHT;139    140     if ((int)(self.view.frame.size.height - MARGIN_HEAD) % (int)APP_HEIGHT == 0) {141         count--;142     }143    144     return count;145 }146 @end