这篇文章主要为大家分享了iOS抽屉效果开发案例，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
本文实例为大家分享了iOS抽屉效果开发实例，供大家参考，具体内容如下
在显示在窗口的控制器上添加三个view（如果只需要往一边滑动就只加2个view）
先声明三个view
#import "ViewController.h"
@interface ViewController ()
@property(nonatomic, weak) UIView *mainV;
@property(nonatomic, weak) UIView *leftV;
@property(nonatomic, weak) UIView *rightV;
@end
添加view到控制器view上
#pragma mark - 添加子控件
- (void)setUpChildViews {
UIView *leftV = [[UIView alloc]initWithFrame:self.view.bounds];
leftV.backgroundColor = [UIColor orangeColor];
[self.view addSubview:leftV];
_leftV = leftV;
UIView *rightV = [[UIView alloc]initWithFrame:self.view.bounds];
rightV.backgroundColor = [UIColor groupTableViewBackgroundColor];
[self.view addSubview:rightV];
_rightV = rightV;
UIView *mainV = [[UIView alloc]initWithFrame:self.view.bounds];
mainV.backgroundColor = [UIColor yellowColor];
[self.view addSubview:mainV];
_mainV = mainV;
}
- (void)viewDidLoad {
[super viewDidLoad];
//添加子控件
[self setUpChildViews];
//添加Pan手势
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(pan:)];
[self.view addGestureRecognizer:pan];
//添加点按手势，在主视图上任意位置点击回到屏幕开始位置
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tap)];
[self.view addGestureRecognizer:tap];
}
#pragma mark - 手势识别方法
#define targetL -230
#define targetR 200
#define screenW [UIScreen mainScreen].bounds.size.width
- (void)pan:(UIPanGestureRecognizer *)pan {
//获取手势移动的位置
CGPoint tranP = [pan translationInView:self.view];
//获取x的偏移量
CGFloat offsetX = tranP.x;
//修改mainV的frame
_mainV.frame = [self frameWithOffsetX:offsetX];
//判断mainV的x是否大于0
[self observeValueForKeyPath:nil ofObject:nil change:nil context:nil];
//复位
[pan setTranslation:CGPointZero inView:self.view];
//判断当手势结束的时候，定位
if (pan.state == UIGestureRecognizerStateEnded) {
CGFloat target = 0;
if (_mainV.frame.origin.x > screenW * 0.5) {
//定位到右边
target = targetR;
}else if(CGRectGetMaxX(_mainV.frame) < screenW * 0.5) {
//定位到左边
target = targetL;
}
//获取X轴需要移动的偏移量
CGFloat offsetX = target - _mainV.frame.origin.x;
[UIView animateWithDuration:0.25 animations:^{
_mainV.frame = target == 0 ? self.view.bounds : [self frameWithOffsetX:offsetX];
}];
}
}
