iOS开发UI篇—九宫格坐标计算

  1 //
  2 //  SLViewController.m
  3 //  九宫格练习
  4 //
  5 //  Created by apple on 14-5-21.
  6 //  Copyright (c) 2014年 itcase. All rights reserved.
  7 //
  8 
  9 #import "SLViewController.h"
 10 
 11 @interface SLViewController ()
 12 @property(nonatomic,strong)NSArray *apps;
 13 @end
 14 
 15 @implementation SLViewController
 16 
 17 
 18 // 1.加载数据
 19 - (NSArray *)apps
 20 {
 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)viewDidLoad
 29 {
 30     [super viewDidLoad];
 31     NSLog(@"%ld",self.apps.count);
 32     
 33     // 2.完成布局设计
 34     // 三列
 35     int totalloc = 3;
 36     CGFloat appvieww = 80;
 37     CGFloat appviewh = 90;
 38     
 39     CGFloat margin = (self.view.frame.size.width-totalloc * appvieww) / (totalloc + 1);
 40     int count = self.apps.count;
 41     for (int i = 0; i < count; i++) {
 42         int row = i / totalloc;// 行号
 43         // 1/3 = 0,2/3 = 0,3/3 = 1;
 44         int loc = i % totalloc;// 列号
 45         
 46         CGFloat appviewx = margin + (margin + appvieww) * loc;
 47         CGFloat appviewy = margin + (margin + appviewh) * row;
 48         
 49         // 创建uiview控件
 50         UIView *appview = [[UIView alloc]initWithFrame:CGRectMake(appviewx, appviewy, appvieww, appviewh)];
 51         // [appview setBackgroundColor:[UIColor purpleColor]];
 52         [self.view addSubview:appview];
 53         
 54         
 55         // 创建uiview控件中的子视图
 56         UIImageView *appimageview = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 80, 50)];
 57         UIImage *appimage = [UIImage imageNamed:self.apps[i][@"icon"]];
 58         appimageview.image = appimage;
 59         [appimageview setContentMode:UIViewContentModeScaleAspectFit];
 60         //  NSLog(@"%@",self.apps[i][@"icon"]);
 61         [appview addSubview:appimageview];
 62         
 63         // 创建文本标签
 64         UILabel *applable = [[UILabel alloc]initWithFrame:CGRectMake(0, 50, 80, 20)];
 65         [applable setText:self.apps[i][@"name"]];
 66         [applable setTextAlignment:NSTextAlignmentCenter];
 67         [applable setFont:[UIFont systemFontOfSize:12.0]];
 68         [appview addSubview:applable];
 69         
 70         // 创建按钮
 71         UIButton *appbtn = [UIButton buttonWithType:UIButtonTypeCustom];
 72         appbtn.frame =  CGRectMake(10, 70, 60, 20);
 73         [appbtn setBackgroundImage:[UIImage imageNamed:@"buttongreen"] forState:UIControlStateNormal];
 74         [appbtn setBackgroundImage:[UIImage imageNamed:@"buttongreen_highlighted"] forState:UIControlStateHighlighted];
 75         [appbtn setTitle:@"下载" forState:UIControlStateNormal];
 76         appbtn.titleLabel.font = [UIFont systemFontOfSize:12.0];
 77         [appview addSubview:appbtn];
 78         
 79         [appbtn addTarget:self action:@selector(click) forControlEvents:UIControlEventTouchUpInside];
 80     }
 81     
 82 }
 83 
 84 -(void)click
 85 {
 86     // 动画标签
 87     UILabel *animalab = [[UILabel alloc]initWithFrame:CGRectMake(self.view.center.x-100, self.view.center.y+20, 200, 40)];
 88     [animalab setText:@"下载成功"];
 89     animalab.font = [UIFont systemFontOfSize:12.0];
 90     [animalab setBackgroundColor:[UIColor brownColor]];
 91     [animalab setAlpha:0];
 92     [self.view addSubview:animalab];
 93     
 94     /*
 95     [UIView beginAnimations:Nil context:Nil];
 96     [animalab setAlpha:1];
 97     [UIView setAnimationDuration:4.0];
 98     [UIView commitAnimations];
 99     */
100     
101     // 执行完之后，还得把这给删除了，推荐使用block动画
102     [UIView animateWithDuration:4.0 animations:^{
103         [animalab setAlpha:1];
104     } completion:^(BOOL finished) {
105 //         [self.view removeFromSuperview];
106     }];
107 }
108 
109 @end