IOS開發(fā)仿微信右側(cè)彈出視圖實(shí)現(xiàn)

更新時(shí)間：2017年10月17日 11:05:14 作者：苦練內(nèi)功

這篇文章主要介紹了IOS開發(fā)仿微信右側(cè)彈出視圖實(shí)現(xiàn)的相關(guān)資料,希望通過本文能幫助到大家，讓大家實(shí)現(xiàn)這樣類似的功能，需要的朋友可以參考下

IOS開發(fā)仿微信右側(cè)彈出視圖實(shí)現(xiàn)

微信首頁的+號,點(diǎn)擊之后會彈出一個(gè)更多的視圖,這個(gè)視圖如何實(shí)現(xiàn)呢?

實(shí)現(xiàn)該效果可能需要以下技術(shù)要點(diǎn):

1.圖片拉伸,通過拉伸圖片的中間的較小區(qū)域來保持圖片的邊上的形狀

2.仿射變換,用到仿射變換的縮放,平移和合并,視圖動畫

3.navigationBar的樣式設(shè)置

實(shí)現(xiàn)效果,如下:

本Demo圖片來源微信安裝包解壓得到的圖片

實(shí)現(xiàn)代碼:

// 
// ViewController.m 
// appXX-微信更多工具欄 
// 
// 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)];//拉伸圖片 
  _imageView = [[UIImageView alloc]init]; 
  _imageView.frame = CGRectMake(kScreenWidth-100, 64, 100, 150); 
  _imageView.image = stretchImage; 
//仿射變換,矩陣變換 
 CGAffineTransform smaller = CGAffineTransformMakeScale(0.01, 0.01);//比例縮放 
 CGAffineTransform rightUpMove = CGAffineTransformMakeTranslation(_imageView.frame.size.width/2, -_imageView.frame.size.height/2);//平移 
 CGAffineTransform cat = CGAffineTransformConcat(smaller, rightUpMove);//合并兩個(gè)矩陣變換 
 _imageView.transform = cat;//設(shè)置_imageView的仿射變換 
_imageView.alpha = 0;//透明度 
[self.view addSubview:_imageView]; 
_imageView.hidden = YES; 
self.navigationController.navigationBar.barStyle = UIBarStyleBlack;//設(shè)置navigationBar的樣式 
self.navigationController.navigationBar.tintColor = [UIColor whiteColor];//設(shè)置navigationBar字體或者鏤空圖的顏色 

}
//點(diǎn)擊右側(cè)的按鈕
- (IBAction)tapAdd:(UIBarButtonItem *)sender 
{ 
  if (_imageView.hidden) 
  { 
    CGAffineTransform larger = CGAffineTransformMakeScale(1, 1);//放大 
    _imageView.hidden = NO;//顯示視圖 
    [UIView animateWithDuration:0.2 animations:^{ 
      _imageView.transform = larger; 
      _imageView.alpha = 1; 
       
    }]; 
  } 
  else 
  { 
    CGAffineTransform smaller = CGAffineTransformMakeScale(0.01, 0.01);//縮小 
    CGAffineTransform rightUpMove = CGAffineTransformMakeTranslation(_imageView.frame.size.width/2, -_imageView.frame.size.height/2);//移動 
    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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