ios 应用程序管理的实现
1. 项目名称：应用管理
2. 项目截图展示
3. 项目功能
展示应用图标，名称和下载按钮
点击下载按钮，出现“正在下载”图标
4. 项目代码
模型代码：appinfo.h
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#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 */- (instancetype)initwithdict:(nsdictionary *)dict;/** 快速实例化一个对象 */+ (instancetype)appinfowithdict:(nsdictionary *)dict;/** 返回所有plist中的数据模型数组 */+ (nsarray *)applist;@end |
模型代码：appinfo.m
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#import "appinfo.h"@implementation appinfo// 合成指令，主动指定属性使用的成员变量名称@synthesize image = _image;//图片模型- (uiimage *)image{ if (_image == nil) { _image = [uiimage imagenamed:self.icon]; } return _image;}- (instancetype)initwithdict:(nsdictionary *)dict{ self = [super init]; if (self) { // 用字典给属性赋值 // self.name = dict[@"name"]; //将字典的内容赋值给属性 // self.icon = dict[@"icon"]; [self setvaluesforkeyswithdictionary:dict]; } return self;}+ (instancetype)appinfowithdict:(nsdictionary *)dict{ return [[self alloc] initwithdict:dict];}+ (nsarray *)applist{ nsarray *array = [nsarray arraywithcontentsoffile:[[nsbundle mainbundle] pathforresource:@"app.plist" oftype:nil]]; // 创建一个临时可变数组 nsmutablearray *arraym = [nsmutablearray array]; // 遍历数组，依次转换模型 for (nsdictionary *dict in array) { [arraym addobject:[appinfo appinfowithdict:dict]]; } return arraym;}@end |
模型view：appview.h
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#import <uikit/uikit.h>@class appinfo;@interface appview : uiview/** 类方法，方便调用视图 */+ (instancetype)appview;/** 实例化视图，并使用appinfo设置视图的显示 */+ (instancetype)appviewwithappinfo:(appinfo *)appinfo;// 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 |
模型view：appview.m
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#import "appview.h"#import "appinfo.h"@interface appview()@property (weak, nonatomic) iboutlet uiimageview *iconview;@property (weak, nonatomic) iboutlet uilabel *label;@end@implementation appview//实例化xib+ (instancetype)appview{ return [[[nsbundle mainbundle] loadnibnamed:@"appview" owner:nil options:nil] lastobject];}//根据模型实例化xib+ (instancetype)appviewwithappinfo:(appinfo *)appinfo{ // 1. 实例化一个视图 appview *view = [self appview]; // 2. 设置视图的显示 view.appinfo = appinfo;//包含，appview有appinfo的属性 // 3. 返回视图 return view;}/** 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;}/** 按钮监听方法 */- (ibaction)click:(uibutton *)button{ // 添加一个uilabel到界面上 uilabel *label = [[uilabel alloc] initwithframe:cgrectmake(80, 400, 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就是视图控制器中的self.view [self.superview addsubview:label]; // 动画效果 label.alpha = 0.0; // 禁用按钮，如果点击了按钮以后就禁用按钮 button.enabled = no; // 动画结束之后删除 [uiview animatewithduration:1.0f animations:^{ // 要修改的动画属性 label.alpha = 1.0; } completion:^(bool finished) { [uiview animatewithduration:1.0 animations:^{ label.alpha = 0.0; } completion:^(bool finished) [label removefromsuperview]; }]; }];}@end |
viewcontroller.m
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#import "viewcontroller.h"#import "appinfo.h"#import "appview.h"#define kappvieww 80#define kappviewh 90#define kcolcount 3#define kstarty 20@interface viewcontroller ()/** 应用程序列表 */@property (nonatomic, strong) nsarray *applist;@end@implementation viewcontroller- (nsarray *)applist{ if (_applist == nil) { _applist = [appinfo applist]; } return _applist;}- (void)viewdidload{ [super viewdidload]; // 搭建九宫格 // 320 - 3 * 80 = 80 / 4 = 20 cgfloat marginx = (self.view.bounds.size.width - kcolcount * kappvieww) / (kcolcount + 1); cgfloat marginy = 10; for (int i = 0; i < self.applist.count; i++) { // 行 int row = i / kcolcount; // 列 int col = i % kcolcount; cgfloat x = marginx + col * (marginx + kappvieww); cgfloat y = kstarty + marginy + row * (marginy + kappviewh); //加载第i个xib视图 appview *appview = [appview appviewwithappinfo:self.applist[i]]; // 设置视图位置 appview.frame = cgrectmake(x, y, kappvieww, kappviewh); [self.view addsubview:appview]; }} |
5. 本项目必须掌握的代码段
字典转模型
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- (instancetype)initwithdict:(nsdictionary *)dict{ self = [super init]; if (self) { [self setvaluesforkeyswithdictionary:dict]; } return self;}+ (instancetype)appinfowithdict:(nsdictionary *)dict{ return [[self alloc] initwithdict:dict];}+ (nsarray *)applist{ nsarray *array = [nsarray arraywithcontentsoffile:[[nsbundle mainbundle] pathforresource:@"app.plist" oftype:nil]]; // 创建一个临时可变数组 nsmutablearray *arraym = [nsmutablearray array]; // 遍历数组，依次转换模型 for (nsdictionary *dict in array) { [arraym addobject:[appinfo appinfowithdict:dict]]; } return arraym;} |
kvc
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[self setvaluesforkeyswithdictionary:dict]; |
6. 笔记
字典转模型：
plist文件有多个字典，把字典的元素转换成模型类对象的成员变量，将模型类对象放入数组中 模型的属性名称和plist文件中的key名称必须一致
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原文链接：http://blog.csdn.net/apple890111/article/details/48861641
