iOS开发UI篇—九宫格坐标计算

iOS开发UI篇—九宫格坐标计算

一、要求

完成下面的布局

二、分析

寻找左边的规律，每一个uiview的x坐标和y坐标。

三、实现思路

(1)明确每一块用得是什么view

(2)明确每个view之间的父子关系，每个视图都只有一个父视图，拥有很多的子视图。

(3)可以先尝试逐个的添加格子，最后考虑使用for循环，完成所有uiview的创建

(4)加载app数据，根据数据长度创建对应个数的格子

(5)添加格子内部的子控件

(6)给内部的子控件装配数据

四、代码示例

 1 //
  2 //  YYViewController.m3 //  九宫格练习4 //
  5 //  Created by 孔医己 on 14-5-22.6 //  Copyright (c) 2014年 itcast. All rights reserved.7 //
  8 9 #import "YYViewController.h"10 11 @interface YYViewController ()12 @property(nonatomic,strong)NSArray *apps;13 @end14 15 @implementation YYViewController16 17 18 //1.加载数据19 - (NSArray *)apps20 {21     if (!_apps) {22         NSString *path=[[NSBundle mainBundle]pathForResource:@"app.plist" ofType:nil];23         _apps=[NSArray arrayWithContentsOfFile:path];24     }25     return _apps;26 }27 28 - (void)viewDidLoad29 {30     [super viewDidLoad];31     NSLog(@"%d",self.apps.count);32     33     //2.完成布局设计34     35     //三列36     int totalloc=3;37     CGFloat appvieww=80;38     CGFloat appviewh=90;39     40     CGFloat margin=(self.view.frame.size.width-totalloc*appvieww)/(totalloc+1);41     int count=self.apps.count;42     for (int i=0; i<count; i++) {43         int row=i/totalloc;//行号44         //1/3=0,2/3=0,3/3=1;45         int loc=i%totalloc;//列号46         47         CGFloat appviewx=margin+(margin+appvieww)*loc;48         CGFloat appviewy=margin+(margin+appviewh)*row;49         50         51         //创建uiview控件52         UIView *appview=[[UIView alloc]initWithFrame:CGRectMake(appviewx, appviewy, appvieww, appviewh)];53         //[appview setBackgroundColor:[UIColor purpleColor]];54         [self.view addSubview:appview];55         56         57         //创建uiview控件中的子视图58         UIImageView *appimageview=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 80, 50)];59         UIImage *appimage=[UIImage imageNamed:self.apps[i][@"icon"]];60         appimageview.image=appimage;61         [appimageview setContentMode:UIViewContentModeScaleAspectFit];62        // NSLog(@"%@",self.apps[i][@"icon"]);63         [appview addSubview:appimageview];64         65         //创建文本标签66         UILabel *applable=[[UILabel alloc]initWithFrame:CGRectMake(0, 50, 80, 20)];67         [applable setText:self.apps[i][@"name"]];68         [applable setTextAlignment:NSTextAlignmentCenter];69         [applable setFont:[UIFont systemFontOfSize:12.0]];70         [appview addSubview:applable];71         72         //创建按钮73         UIButton *appbtn=[UIButton buttonWithType:UIButtonTypeCustom];74         appbtn.frame= CGRectMake(10, 70, 60, 20);75         [appbtn setBackgroundImage:[UIImage imageNamed:@"buttongreen"] forState:UIControlStateNormal];76         [appbtn setBackgroundImage:[UIImage imageNamed:@"buttongreen_highlighted"] forState:UIControlStateHighlighted];77         [appbtn setTitle:@"下载" forState:UIControlStateNormal];78         appbtn.titleLabel.font=[UIFont systemFontOfSize:12.0];79         [appview addSubview:appbtn];80         81         [appbtn addTarget:self action:@selector(click) forControlEvents:UIControlEventTouchUpInside];82     }83 84 }85 86 -(void)click87 {88     //动画标签89     UILabel *animalab=[[UILabel alloc]initWithFrame:CGRectMake(self.view.center.x-100, self.view.center.y+20, 200, 40)];90     [animalab setText:@"下载成功"];91     animalab.font=[UIFont systemFontOfSize:12.0];92     [animalab setBackgroundColor:[UIColor brownColor]];93     [animalab setAlpha:0];94     [self.view addSubview:animalab];95     96 //    [UIView beginAnimations:Nil context:Nil];97 //    [animalab setAlpha:1];98 //    [UIView setAnimationDuration:4.0];99 //    [UIView commitAnimations];
100     
101     //执行完之后，还得把这给删除了，推荐使用block动画
102     
103     [UIView animateWithDuration:4.0 animations:^{
104     [animalab setAlpha:1];
105     } completion:^(BOOL finished) {
106         //[self.view re];
107     }];
108 }
109 
110 - (void)didReceiveMemoryWarning
111 {
112     [super didReceiveMemoryWarning];
113 }
114