iOS如何用100行代碼實現(xiàn)簡單的抽屜效果

更新時間：2016年10月28日 08:41:49 作者：LYSNote

最近在網(wǎng)上看到一些抽屜效果,看起來很酷!很眩!但是,下不下來看代碼, 所以決定還是自己寫吧!!這篇文章通過近100行的代碼就實現(xiàn)了簡單的抽屜效果，有需要的朋友們可以參考借鑒，下面來一起看看吧。

前言

iOS中抽屜效果的簡單實現(xiàn)現(xiàn)在很多應(yīng)用中都使用到了，網(wǎng)上也有很多了例子，本文主要是通過簡單的一些代碼來實現(xiàn)的，有需要的可以一起學(xué)習(xí)學(xué)習(xí)。

下面是效果圖

示例代碼如下

#import <UIKit/UIKit.h>

@interface MainViewController : UIViewController
+ (instancetype)mainViewControllerWithLeftViewController:(UIViewController *)leftViewController withMainPageViewController:(UIViewController *)mainPageViewController;
@end

#import "MainViewController.h"

#define KWidth self.view.frame.size.width
#define KHeight self.view.frame.size.height

@interface MainViewController ()
@property (nonatomic,strong)UIViewController *leftVC;
@property (nonatomic,strong)UIViewController *centerVC;
@property (nonatomic,assign)BOOL isSlider;
@property (nonatomic,strong)UIView *corverView;
@end


@implementation MainViewController
+ (instancetype)mainViewControllerWithLeftViewController:(UIViewController *)leftViewController withMainPageViewController:(UIViewController *)mainPageViewController{

  MainViewController *mainVC = [[MainViewController alloc] init];
  mainVC.leftVC = leftViewController;
  mainVC.centerVC = mainPageViewController;
  return mainVC;
}
- (void)viewDidLoad{
  [super viewDidLoad];
  self.isSlider = NO;
  self.view.backgroundColor = [UIColor whiteColor];
  [self addChildViewController:self.leftVC];
  [self.view addSubview:self.leftVC.view];
  [self addChildViewController:self.centerVC];
  [self.view addSubview:self.centerVC.view];
  // 給左視圖和主視圖添加手勢
  [self addGestureForView];
}
// 給主視圖添加遮蓋
- (void)addCorverView{
  if (self.corverView) {
    [self.corverView removeFromSuperview];
    self.corverView = nil;
  }
  self.corverView = [[UIView alloc] initWithFrame:self.centerVC.view.bounds];
  _corverView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.0];
  [self.centerVC.view addSubview:self.corverView];
}
// 移除主視圖遮蓋
- (void)removeCoverView{
  if (self.corverView) {
    [self.corverView removeFromSuperview];
    self.corverView = nil;
  }
}
// 給左視圖和主視圖添加手勢
- (void)addGestureForView{
  UISwipeGestureRecognizer *rightGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeRightAction:)];
  rightGesture.direction = UISwipeGestureRecognizerDirectionRight;
  [self.centerVC.view addGestureRecognizer:rightGesture];
  UISwipeGestureRecognizer *leftGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeLeftAction:)];
  leftGesture.direction = UISwipeGestureRecognizerDirectionLeft;
  [self.centerVC.view addGestureRecognizer:leftGesture];
  UISwipeGestureRecognizer *leftVCLeftSwipeGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(leftVCLeftSwipeAction:)];
  leftVCLeftSwipeGesture.direction = UISwipeGestureRecognizerDirectionLeft;
  [self.leftVC.view addGestureRecognizer:leftVCLeftSwipeGesture];
}
- (void)swipeRightAction:(id)sender{
  [self moveView:self.centerVC.view scale:0.8 panValue:KWidth];
  self.isSlider = YES;
  [self addCorverView];
}
- (void)swipeLeftAction:(id)sender{
  [self moveView:self.centerVC.view scale:1 panValue:KWidth / 2];
  self.isSlider = NO;
  [self removeCoverView];
}
- (void)leftVCLeftSwipeAction:(id)sender{
  [self moveView:self.centerVC.view scale:1 panValue:KWidth / 2];
  self.isSlider = NO;
  [self removeCoverView];
}
// 平移和縮放一個視圖
- (void)moveView:(UIView *)view scale:(CGFloat)scale panValue:(CGFloat)value{
  [UIView beginAnimations:nil context:nil];
  view.transform = CGAffineTransformScale(CGAffineTransformIdentity,scale,scale);
  view.center = CGPointMake(value, view.center.y);
  [UIView commitAnimations];
}
@end

總結(jié)

以上就是這篇文章的全部內(nèi)容了，希望本文的內(nèi)容對大家的學(xué)習(xí)或者工作能有所幫助，如果有疑問大家可以留言交流。

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