本文實(shí)例為大家分享了iOS抽屜效果開發(fā)實(shí)例，供大家參考，具體內(nèi)容如下
在顯示在窗口的控制器上添加三個(gè)view（如果只需要往一邊滑動就只加2個(gè)view）
先聲明三個(gè)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手勢 UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(pan:)]; [self.view addGestureRecognizer:pan]; //添加點(diǎn)按手勢，在主視圖上任意位置點(diǎn)擊回到屏幕開始位置 UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tap)]; [self.view addGestureRecognizer:tap]; }
#pragma mark - 手勢識別方法#define targetL -230#define targetR 200#define screenW [UIScreen mainScreen].bounds.size.width- (void)pan:(UIPanGestureRecognizer *)pan { //獲取手勢移動的位置 CGPoint tranP = [pan translationInView:self.view]; //獲取x的偏移量 CGFloat offsetX = tranP.x; //修改mainV的frame _mainV.frame = [self frameWithOffsetX:offsetX]; //判斷mainV的x是否大于0 [self observeValueForKeyPath:nil ofObject:nil change:nil context:nil]; //復(fù)位 [pan setTranslation:CGPointZero inView:self.view]; //判斷當(dāng)手勢結(jié)束的時(shí)候，定位 if (pan.state == UIGestureRecognizerStateEnded) { CGFloat target = 0; if (_mainV.frame.origin.x > screenW * 0.5) { //定位到右邊 target = targetR; }else if(CGRectGetMaxX(_mainV.frame) < screenW * 0.5) { //定位到左邊 target = targetL; } //獲取X軸需要移動的偏移量 CGFloat offsetX = target - _mainV.frame.origin.x; [UIView animateWithDuration:0.25 animations:^{ _mainV.frame = target == 0 ? self.view.bounds : [self frameWithOffsetX:offsetX]; }]; } }
- (void)tap { [UIView animateWithDuration:0.25 animations:^{ _mainV.frame = self.view.bounds; }]; }#define kMaxY 80#pragma mark - 根據(jù)offsetX計(jì)算mainV的frame- (CGRect)frameWithOffsetX:(CGFloat)offsetX { //獲取上一次的frame CGRect frame = _mainV.frame; //獲取屏幕的高度 CGFloat screenH = [UIScreen mainScreen].bounds.size.height; //獲取屏幕的寬度 //CGFloat screenW = [UIScreen mainScreen].bounds.size.width; //X軸平移一點(diǎn)對應(yīng)Y軸需要平移的距離 CGFloat offsetY = offsetX * kMaxY / screenW; //獲取上一次的高度 CGFloat preH = frame.size.height; //獲取上一次的寬度 CGFloat preW = frame.size.width; //獲取當(dāng)前高度 CGFloat curH = preH - 2 * offsetY; //如果是向左滑動 if(frame.origin.x < 0) { curH = preH + 2 * offsetY; } //獲取尺寸的縮放比例 CGFloat scale = curH / preH; //獲取當(dāng)前寬度 CGFloat curW = preW * scale; //獲取當(dāng)前x frame.origin.x += offsetX; //獲取當(dāng)前y CGFloat y = (screenH - curH) / 2; frame.origin.y = y; frame.size.width = curW; frame.size.height = curH; return frame; } - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSString *,id> *)change context:(void *)context { if(_mainV.frame.origin.x > 0) {//往右邊滑動 _rightV.hidden = YES; }else if(_mainV.frame.origin.x < 0) {//往左邊滑動 _rightV.hidden = NO; } } 如果想要在mainV主視圖中顯示tableView，就新創(chuàng)建一個(gè)TableViewController，在這里面顯示tableView的數(shù)據(jù)，
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return 30;} - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *ID = @"cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:ID]; if(cell == nil) { cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:ID]; } cell.textLabel.text = [NSString stringWithFormat:@"第%ld行", indexPath.row]; return cell;} 再創(chuàng)建一個(gè)在storyboard中顯示的控制器XXMainViewController，繼承自實(shí)現(xiàn)了抽屜效果的ViewController，并且在storyboard中將class改為這個(gè)控制的類名，還要將顯示tableView的控制成為他的子控制器
- (void)viewDidLoad { [super viewDidLoad]; XXViewController *vc = [[XXViewController alloc]init]; vc.view.frame = self.view.bounds; //讓vc成為主視圖控制器的子控制器 [self addChildViewController:vc]; //主視圖展示tableView [self.mainV addSubview:vc.view]; } 為了在XXMainViewController中只能訪問mainV而不能修改他的值，所以將子控件的view暴露在ViewController.h中，并添加read-only
#import <UIKit/UIKit.h> @interface ViewController : UIViewController@property(nonatomic, weak, readonly) UIView *mainV;@property(nonatomic, weak, readonly) UIView *leftV;@property(nonatomic, weak, readonly) UIView *rightV;@end
運(yùn)行效果圖：
以上就是本文的全部內(nèi)容，希望對大家學(xué)習(xí)iOS程序設(shè)計(jì)有所幫助。
