• 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:

     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
    View Code

    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
    View Code

    YYappview.h文件代码(已经连线)

    1 #import <UIKit/UIKit.h>
    2 
    3 @interface YYappview : UIView
    4 @property (strong, nonatomic) IBOutlet UIImageView *appimg;
    5 @property (strong, nonatomic) IBOutlet UILabel *applab;
    6 @property (strong, nonatomic) IBOutlet UIButton *appbtn;
    7 @end
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  • 原文地址:https://www.cnblogs.com/dondre/p/4092145.html
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