iOS开发UI篇—xib的简单使用

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：

 //
 //  YYViewController.m
 //  10-xib文件的使用
 //
 //  Created by apple on 14-5-24.
 //  Copyright (c) 2014年 itcase. All rights reserved.
 //

 #import "YYViewController.h"
 #import "YYapp.h"

 @interface YYViewController ()
 @property(nonatomic,strong)NSArray *app;
 @end

 @implementation YYViewController

 //1.加载数据信息
 -(NSArray *)app
 {
     if (!_app) {
         NSString *path=[[NSBundle mainBundle]pathForResource:@"app.plist" ofType:nil];
         NSArray *temparray=[NSArray arrayWithContentsOfFile:path];

         //字典转模型
         NSMutableArray *arrayM=[NSMutableArray array ];
         for (NSDictionary *dict in temparray) {
             [arrayM addObject:[YYapp appWithDict:dict]];
         }
         _app=arrayM;
     }
     return _app;
 }

 //创建界面原型
 - (void)viewDidLoad
 {
     [super viewDidLoad];
     NSLog(@"%d",self.app.count);

     //九宫格布局
     int totalloc=;
     CGFloat appviewW=;
     CGFloat appviewH=;
     CGFloat margin=(self.view.frame.size.width-totalloc*appviewW)/(totalloc+);

     int count=self.app.count;
     for (int i=; i<count; i++) {

         int row=i/totalloc;
         int loc=i%totalloc;
         CGFloat appviewX=margin + (margin +appviewW)*loc;
         CGFloat appviewY=margin + (margin +appviewH)*row;
         YYapp *app=self.app[i];

         //拿出xib视图
        NSArray  *apparray= [[NSBundle mainBundle]loadNibNamed:@"appxib" owner:nil options:nil];
         UIView *appview=[apparray firstObject];
         //加载视图
         appview.frame=CGRectMake(appviewX, appviewY, appviewW, appviewH);

         UIImageView *appviewImg=(UIImageView *)[appview viewWithTag:];
         appviewImg.image=app.image;

         UILabel *appviewlab=(UILabel *)[appview viewWithTag:];
         appviewlab.text=app.name;

         UIButton *appviewbtn=(UIButton *)[appview viewWithTag:];
         [appviewbtn addTarget:self action:@selector(appviewbtnClick:) forControlEvents:UIControlEventTouchUpInside];
         appviewbtn.tag=i;

         [self.view addSubview:appview];
     }
 }

 /**按钮的点击事件*/
 -(void)appviewbtnClick:(UIButton *)btn
 {
     YYapp *apps=self.app[btn.tag];
     UILabel *showlab=[[UILabel alloc]initWithFrame:CGRectMake(, , , )];
     [showlab setText:[NSString stringWithFormat: @"%@下载成功",apps.name]];
     [showlab setBackgroundColor:[UIColor lightGrayColor]];
     [self.view addSubview:showlab];
     showlab.alpha=1.0;

     //简单的动画效果
     [UIView animateWithDuration:2.0 animations:^{
         showlab.alpha=;
     } completion:^(BOOL finished) {
         [showlab removeFromSuperview];
     }];
 }

 @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：

 //
 //  YYViewController.m
 //  10-xib文件的使用
 //
 //  Created by apple on 14-5-24.
 //  Copyright (c) 2014年 itcase. All rights reserved.
 //

 #import "YYViewController.h"
 #import "YYapp.h"
 #import "YYappview.h"

 @interface YYViewController ()
 @property(nonatomic,strong)NSArray *app;
 @end

 @implementation YYViewController

 //1.加载数据信息
 -(NSArray *)app
 {
     if (!_app) {
         NSString *path=[[NSBundle mainBundle]pathForResource:@"app.plist" ofType:nil];
         NSArray *temparray=[NSArray arrayWithContentsOfFile:path];

         //字典转模型
         NSMutableArray *arrayM=[NSMutableArray array ];
         for (NSDictionary *dict in temparray) {
             [arrayM addObject:[YYapp appWithDict:dict]];
         }
         _app=arrayM;
     }
     return _app;
 }

 //创建界面原型
 - (void)viewDidLoad
 {
     [super viewDidLoad];
     NSLog(@"%d",self.app.count);

     //九宫格布局
     int totalloc=;
     CGFloat appviewW=;
     CGFloat appviewH=;
     CGFloat margin=(self.view.frame.size.width-totalloc*appviewW)/(totalloc+);

     int count=self.app.count;
     for (int i=; i<count; i++) {

         int row=i/totalloc;
         int loc=i%totalloc;
         CGFloat appviewX=margin + (margin +appviewW)*loc;
         CGFloat appviewY=margin + (margin +appviewH)*row;
         YYapp *app=self.app[i];

         //拿出xib视图
        NSArray  *apparray= [[NSBundle mainBundle]loadNibNamed:@"appxib" owner:nil options:nil];

         //注意这里的类型名!
         //UIView *appview=[apparray firstObject];
         YYappview  *appview=[apparray firstObject];

         //加载视图
         appview.frame=CGRectMake(appviewX, appviewY, appviewW, appviewH);
           [self.view addSubview:appview];

         appview.appimg.image=app.image;
         appview.applab.text=app.name;
         appview.appbtn.tag=i;

         [ appview.appbtn addTarget:self action:@selector(appviewbtnClick:) forControlEvents:UIControlEventTouchUpInside];

     }
 }

 /**按钮的点击事件*/
 -(void)appviewbtnClick:(UIButton *)btn
 {
     YYapp *apps=self.app[btn.tag];
     UILabel *showlab=[[UILabel alloc]initWithFrame:CGRectMake(, , , )];
     [showlab setText:[NSString stringWithFormat: @"%@下载成功",apps.name]];
     [showlab setBackgroundColor:[UIColor lightGrayColor]];
     [self.view addSubview:showlab];
     showlab.alpha=1.0;

     //简单的动画效果
     [UIView animateWithDuration:2.0 animations:^{
         showlab.alpha=;
     } completion:^(BOOL finished) {
         [showlab removeFromSuperview];
     }];
 }

 @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