IOS开发仿微信右侧弹出视图实现

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:

//
// 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

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原文链接：http://blog.csdn.net/yangbingbinga/article/details/47088893