iOS开发UI篇—xib的简单使用
一、简单介绍
xib和storyboard的比较，一个轻量级一个重量级。
共同点：
都用来描述软件界面
都用Interface Builder工具来编辑
不同点:
Xib是轻量级的，用来描述局部的UI界面
Storyboard是重量级的，用来描述整个软件的多个界面，并且能展示多个界面之间的跳转关系
二、xib的简单使用
1.建立xib文件
建立的xib文件命名为appxib.xib
2.对xib进行设置
根据程序的需要，这里把view调整为自由布局
建立view模型（设置长宽等参数）
调整布局和内部的控件
完成后的单个view
3.使用xib文件的代码示例
YYViewController.m文件代码如下：
1 // 2 // YYViewController.m 3 // 10-xib文件的使用 4 // 5 // Created by apple on 14-5-24. 6 // Copyright (c) 2014年 itcase. All rights reserved. 7 // 8 9 #import "YYViewController.h" 10 #import "YYapp.h" 11 12 @interface YYViewController () 13 @property(nonatomic,strong)NSArray *app; 14 @end 15 16 @implementation YYViewController 17 18 //1.加载数据信息 19 -(NSArray *)app 20 { 21 if (!_app) { 22 NSString *path=[[NSBundle mainBundle]pathForResource:@"app.plist" ofType:nil]; 23 NSArray *temparray=[NSArray arrayWithContentsOfFile:path]; 24 25 //字典转模型 26 NSMutableArray *arrayM=[NSMutableArray array ]; 27 for (NSDictionary *dict in temparray) { 28 [arrayM addObject:[YYapp appWithDict:dict]]; 29 } 30 _app=arrayM; 31 } 32 return _app; 33 } 34 35 //创建界面原型 36 - (void)viewDidLoad 37 { 38 [super viewDidLoad]; 39 NSLog(@"%d",self.app.count); 40 41 //九宫格布局 42 int totalloc=3; 43 CGFloat appviewW=80; 44 CGFloat appviewH=90; 45 CGFloat margin=(self.view.frame.size.width-totalloc*appviewW)/(totalloc+1); 46 47 int count=self.app.count; 48 for (int i=0; i<count; i++) { 49 50 int row=i/totalloc; 51 int loc=i%totalloc; 52 CGFloat appviewX=margin + (margin +appviewW)*loc; 53 CGFloat appviewY=margin + (margin +appviewH)*row; 54 YYapp *app=self.app[i]; 55 56 //拿出xib视图 57 NSArray *apparray= [[NSBundle mainBundle]loadNibNamed:@"appxib" owner:nil options:nil]; 58 UIView *appview=[apparray firstObject]; 59 //加载视图 60 appview.frame=CGRectMake(appviewX, appviewY, appviewW, appviewH); 61 62 UIImageView *appviewImg=(UIImageView *)[appview viewWithTag:1]; 63 appviewImg.image=app.image; 64 65 UILabel *appviewlab=(UILabel *)[appview viewWithTag:2]; 66 appviewlab.text=app.name; 67 68 UIButton *appviewbtn=(UIButton *)[appview viewWithTag:3]; 69 [appviewbtn addTarget:self action:@selector(appviewbtnClick:) forControlEvents:UIControlEventTouchUpInside]; 70 appviewbtn.tag=i; 71 72 [self.view addSubview:appview]; 73 } 74 } 75 76 /**按钮的点击事件*/ 77 -(void)appviewbtnClick:(UIButton *)btn 78 { 79 YYapp *apps=self.app[btn.tag]; 80 UILabel *showlab=[[UILabel alloc]initWithFrame:CGRectMake(60, 450, 200, 20)]; 81 [showlab setText:[NSString stringWithFormat: @"%@下载成功",apps.name]]; 82 [showlab setBackgroundColor:[UIColor lightGrayColor]]; 83 [self.view addSubview:showlab]; 84 showlab.alpha=1.0; 85 86 //简单的动画效果 87 [UIView animateWithDuration:2.0 animations:^{ 88 showlab.alpha=0; 89 } completion:^(BOOL finished) { 90 [showlab removeFromSuperview]; 91 }]; 92 } 93 94 @end
运行效果：
三、对xib进行连线示例
1.连线示例
新建一个xib对应的视图类，继承自Uiview
在xib界面右上角与新建的视图类进行关联
把xib和视图类进行连线
注意：在使用中把weak改成为强引用。否则...
2.连线后的代码示例
YYViewController.m文件代码如下：
1 // 2 // YYViewController.m 3 // 10-xib文件的使用 4 // 5 // Created by apple on 14-5-24. 6 // Copyright (c) 2014年 itcase. All rights reserved. 7 // 8 9 #import "YYViewController.h" 10 #import "YYapp.h" 11 #import "YYappview.h" 12 13 @interface YYViewController () 14 @property(nonatomic,strong)NSArray *app; 15 @end 16 17 @implementation YYViewController 18 19 //1.加载数据信息 20 -(NSArray *)app 21 { 22 if (!_app) { 23 NSString *path=[[NSBundle mainBundle]pathForResource:@"app.plist" ofType:nil]; 24 NSArray *temparray=[NSArray arrayWithContentsOfFile:path]; 25 26 //字典转模型 27 NSMutableArray *arrayM=[NSMutableArray array ]; 28 for (NSDictionary *dict in temparray) { 29 [arrayM addObject:[YYapp appWithDict:dict]]; 30 } 31 _app=arrayM; 32 } 33 return _app; 34 } 35 36 //创建界面原型 37 - (void)viewDidLoad 38 { 39 [super viewDidLoad]; 40 NSLog(@"%d",self.app.count); 41 42 //九宫格布局 43 int totalloc=3; 44 CGFloat appviewW=80; 45 CGFloat appviewH=90; 46 CGFloat margin=(self.view.frame.size.width-totalloc*appviewW)/(totalloc+1); 47 48 int count=self.app.count; 49 for (int i=0; i<count; i++) { 50 51 int row=i/totalloc; 52 int loc=i%totalloc; 53 CGFloat appviewX=margin + (margin +appviewW)*loc; 54 CGFloat appviewY=margin + (margin +appviewH)*row; 55 YYapp *app=self.app[i]; 56 57 //拿出xib视图 58 NSArray *apparray= [[NSBundle mainBundle]loadNibNamed:@"appxib" owner:nil options:nil]; 59 60 //注意这里的类型名! 61 //UIView *appview=[apparray firstObject]; 62 YYappview *appview=[apparray firstObject]; 63 64 //加载视图 65 appview.frame=CGRectMake(appviewX, appviewY, appviewW, appviewH); 66 [self.view addSubview:appview]; 67 68 appview.appimg.image=app.image; 69 appview.applab.text=app.name; 70 appview.appbtn.tag=i; 71 72 [ appview.appbtn addTarget:self action:@selector(appviewbtnClick:) forControlEvents:UIControlEventTouchUpInside]; 73 74 } 75 } 76 77 /**按钮的点击事件*/ 78 -(void)appviewbtnClick:(UIButton *)btn 79 { 80 YYapp *apps=self.app[btn.tag]; 81 UILabel *showlab=[[UILabel alloc]initWithFrame:CGRectMake(60, 450, 200, 20)]; 82 [showlab setText:[NSString stringWithFormat: @"%@下载成功",apps.name]]; 83 [showlab setBackgroundColor:[UIColor lightGrayColor]]; 84 [self.view addSubview:showlab]; 85 showlab.alpha=1.0; 86 87 //简单的动画效果 88 [UIView animateWithDuration:2.0 animations:^{ 89 showlab.alpha=0; 90 } completion:^(BOOL finished) { 91 [showlab removeFromSuperview]; 92 }]; 93 } 94 95 @end
YYappview.h文件代码（已经连线）
#import <UIKit/UIKit.h> @interface YYappview : UIView @property (strong, nonatomic) IBOutlet UIImageView *appimg; @property (strong, nonatomic) IBOutlet UILabel *applab; @property (strong, nonatomic) IBOutlet UIButton *appbtn; @end
