前言

iOS中抽屉效果的简单实现现在很多应用中都使用到了，网上也有很多了例子，本文主要是通过简单的一些代码来实现的，有需要的可以一起学习学习。

下面是效果图

示例代码如下

#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];
// 给左视图和主视图添加手势
[self addGestureForView];
}
// 给主视图添加遮盖
- (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];
}
// 移除主视图遮盖
- (void)removeCoverView{
if (self.corverView) {
[self.corverView removeFromSuperview];
self.corverView = nil;
}
}
// 给左视图和主视图添加手势
- (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];
}
// 平移和缩放一个视图
- (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

总结

以上就是这篇文章的全部内容了，希望本文的内容对大家的学习或者工作能有所帮助，如果有疑问大家可以留言交流。