ios开发仿微信右侧弹出视图实现
微信首页的+号,点击之后会弹出一个更多的视图,这个视图如何实现呢?
实现该效果可能需要以下技术要点:
1.图片拉伸,通过拉伸图片的中间的较小区域来保持图片的边上的形状
2.仿射变换,用到仿射变换的缩放,平移和合并,视图动画
3.navigationbar的样式设置
实现效果,如下:
本demo图片来源微信安装包解压得到的图片
实现代码:
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
// // viewcontroller.m // appxx-微信更多工具栏 // // created by mrbean on 15/7/27. // copyright (c) 2015年 yangbin. all rights reserved. // #import "viewcontroller.h" #define kscreenwidth self.view.bounds.size.width @interface viewcontroller () @property(strong,nonatomic)uiimageview *imageview; @end @implementation viewcontroller- (void)viewdidload { [super viewdidload]; //初始化imageview uiimage *image = [uiimage imagenamed:@"more"]; nslog(@"%f ,%f",image.size.width,image.size.height); uiimage *stretchimage = [image resizableimagewithcapinsets:uiedgeinsetsmake(31, 36, 30, 33)];//拉伸图片 _imageview = [[uiimageview alloc]init]; _imageview.frame = cgrectmake(kscreenwidth-100, 64, 100, 150); _imageview.image = stretchimage; //仿射变换,矩阵变换 cgaffinetransform smaller = cgaffinetransformmakescale(0.01, 0.01);//比例缩放 cgaffinetransform rightupmove = cgaffinetransformmaketranslation(_imageview.frame.size.width/2, -_imageview.frame.size.height/2);//平移 cgaffinetransform cat = cgaffinetransformconcat(smaller, rightupmove);//合并两个矩阵变换 _imageview.transform = cat;//设置_imageview的仿射变换 _imageview.alpha = 0;//透明度 [self.view addsubview:_imageview]; _imageview.hidden = yes; self.navigationcontroller.navigationbar.barstyle = uibarstyleblack;//设置navigationbar的样式 self.navigationcontroller.navigationbar.tintcolor = [uicolor whitecolor];//设置navigationbar字体或者镂空图的颜色 }//点击右侧的按钮- (ibaction)tapadd:(uibarbuttonitem *)sender { if (_imageview.hidden) { cgaffinetransform larger = cgaffinetransformmakescale(1, 1);//放大 _imageview.hidden = no;//显示视图 [uiview animatewithduration:0.2 animations:^{ _imageview.transform = larger; _imageview.alpha = 1; }]; } else { cgaffinetransform smaller = cgaffinetransformmakescale(0.01, 0.01);//缩小 cgaffinetransform rightupmove = cgaffinetransformmaketranslation(_imageview.frame.size.width/2, -_imageview.frame.size.height/2);//移动 cgaffinetransform cat = cgaffinetransformconcat(smaller, rightupmove);//合并transform [uiview animatewithduration:0.2 animations:^{ _imageview.transform = cat; } completion:^(bool finished) { _imageview.hidden = yes; _imageview.alpha = 0; }]; } } - (void)didreceivememorywarning { [super didreceivememorywarning]; // dispose of any resources that can be recreated. } @end |
如有疑问请留言或者到本站社区交流讨论，感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！
原文链接：http://blog.csdn.net/yangbingbinga/article/details/47088893
