// ViewController.m #import "ViewController.h"
#import "ScrollSliderView.h"
@interface ViewController ()
{
NSArray *titleArray;
}
@end @implementation ViewController - (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
NSArray *arr = @[@"家电",@"生鲜",@"小饰品",@"Apple全场",@"水果",@"疯狂折扣中",@"Hot美味零食",@"分期优惠",@"特卖专柜衣服",@"日常用品大集合",@"母婴海外"];
self.view.backgroundColor=[UIColor orangeColor];
self.automaticallyAdjustsScrollViewInsets=NO;
ScrollSliderView *scrollSliderView = [[ScrollSliderView alloc]initWithController:self withTitleArray:arr];
[self.view addSubview:scrollSliderView];
}
//
// ScrollSliderView.h #import <UIKit/UIKit.h> @interface ScrollSliderView : UIView<UIScrollViewDelegate>
#define VIEWWIDTH [UIScreen mainScreen].bounds.size.width
#define VIEWHEIGHT [UIScreen mainScreen].bounds.size.height
#define RAN_COLOR(CUS_RGB) [UIColor colorWithRed:((float)((CUS_RGB & 0xFF0000) >> 16))/255.0 green:((float)((CUS_RGB & 0xFF00) >> 8))/255.0 blue:((float)(CUS_RGB & 0xFF))/255.0 alpha:1.0f]
/*
*
*初始化数据
*/
-(id)initWithController:(UIViewController *)controller withTitleArray:(NSArray *)titleArray;
/*
*底部ScrollView
*/
@property (nonatomic,strong)UIScrollView *mainScrollView;
/*
*滑块ScrollView
*/
@property (nonatomic,strong)UIScrollView *sliderScrollView;
/*
*存放title的数组
*/
@property (nonatomic,copy)NSArray *dataArray;
/*
*点击或滑动后选中的位置
*/
@property (nonatomic, assign) NSInteger selectIndex;
/*
*所在的控制器
*/
@property (nonatomic,weak)UIViewController *fatherController;
@end
//
// ScrollSliderView.m
#import "ScrollSliderView.h"
#import "SubViewController.h"
#import "Cache.h" @implementation ScrollSliderView
{
Cache *cache;
}
/*
*初始化底部ScrollView
*/
-(UIScrollView *)mainScrollView{ if (!_mainScrollView) {
_mainScrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(, , VIEWWIDTH, VIEWHEIGHT-)];
_mainScrollView.bounces = NO;
_mainScrollView.showsVerticalScrollIndicator = NO;
_mainScrollView.showsHorizontalScrollIndicator = NO;
_mainScrollView.pagingEnabled = YES;
_mainScrollView.backgroundColor = [UIColor lightGrayColor];
_mainScrollView.delegate = self;
} return _mainScrollView;
}
/*
*初始化self所有的控件
*/
-(id)initWithController:(UIViewController *)controller withTitleArray:(NSArray *)titleArray
{
if (self = [super initWithFrame:[UIScreen mainScreen].bounds]) {
cache = [[Cache alloc]init];
_dataArray = [NSArray arrayWithArray:titleArray];
_fatherController = controller; [self mainScrollView];
[self addSubview:_mainScrollView]; [self creatSliderScrollView:titleArray];
_mainScrollView.contentSize = CGSizeMake(titleArray.count*VIEWWIDTH, VIEWHEIGHT - - );
SubViewController *subVC = [SubViewController new];
subVC.index = ;
subVC.tilte = _dataArray[];
subVC.view.frame = CGRectMake(,, VIEWWIDTH,_mainScrollView.frame.size.height);
subVC.view.backgroundColor = [UIColor colorWithHue:(arc4random() % / 256.0) saturation:(arc4random() % / 256.0) + 0.5 brightness:(arc4random() % ) + 0.5 alpha:];
[_mainScrollView addSubview:subVC.view];
[controller addChildViewController:subVC];
[cache addCacheSelectIndex:];
}
return self; }
/*
*创建滑块
*/
- (void)creatSliderScrollView:(NSArray *)array{
_sliderScrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(,, VIEWWIDTH, )];
_sliderScrollView.backgroundColor = [UIColor whiteColor];
_sliderScrollView.bounces = NO;
_sliderScrollView.showsHorizontalScrollIndicator = NO;
_sliderScrollView.showsVerticalScrollIndicator = NO;
[self addSubview:_sliderScrollView];
CGFloat spaceWidth = ;
CGFloat widthContentSize = ;
for (NSInteger i = ; i < array.count; i++) {
NSString *titleName = self.dataArray[i];
NSInteger strWidth = [self sizeforWidthWithString:titleName];
UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
UIView *sliderSign = [[UIView alloc]initWithFrame:CGRectMake(spaceWidth + widthContentSize,,strWidth + ,)];
sliderSign.backgroundColor = RAN_COLOR(0xE43494);
sliderSign.tag = + i;
btn.frame = CGRectMake(spaceWidth+widthContentSize,,strWidth + ,);
[btn setTitle:titleName forState:UIControlStateNormal];
[btn setTitleColor:RAN_COLOR(0xE43494) forState:UIControlStateSelected];
[btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
btn.titleLabel.font = [UIFont systemFontOfSize:];
[_sliderScrollView addSubview:btn];
[_sliderScrollView addSubview:sliderSign];
btn.tag = + i;
if (i == ) {
btn.selected = YES;
sliderSign.hidden = NO;
}else{ sliderSign.hidden = YES; }
widthContentSize = strWidth++spaceWidth+widthContentSize;
[btn addTarget:self action:@selector(selectIndexTableViewAndCollectionView:) forControlEvents:UIControlEventTouchUpInside];
}
self.sliderScrollView.contentSize = CGSizeMake(widthContentSize + , );
}
/*
*计算title的长度
*/
-(NSInteger)sizeforWidthWithString:(NSString *)str
{
NSDictionary *attribute = @{NSFontAttributeName: [UIFont systemFontOfSize:]};
CGSize size = [str boundingRectWithSize:CGSizeMake(VIEWWIDTH - , ) options: NSStringDrawingTruncatesLastVisibleLine | NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading attributes:attribute context:nil].size;
return size.width;
}
/*
*点击滑块按钮响应事件
*/
- (void)selectIndexTableViewAndCollectionView:(UIButton *)sender{
//按钮点击 先把所有的按钮都不选中 滑动条View隐藏
for (NSInteger i = ; i < _dataArray.count; i++) {
UIButton *btn = (UIButton *)[self viewWithTag: + i];
UIView *sliderSign = (UIView *)[self viewWithTag: + i];
sliderSign.hidden = YES;
btn.selected = NO;
}
NSInteger index = sender.tag - ;
self.selectIndex = index;
//选中 为选中状态
sender.selected = YES;
UIView *View = (UIView *)[self viewWithTag:index + ];
View.hidden = NO; UIButton *btnRight = [_sliderScrollView viewWithTag:sender.tag + ];
UIButton *btnLeft = [_sliderScrollView viewWithTag:sender.tag - ];
//分页 显示哪个控制器
_mainScrollView.contentOffset = CGPointMake(index*VIEWWIDTH,);
if ((sender.frame.origin.x + sender.frame.size.width) > VIEWWIDTH - ){
if (sender.tag != ( + _dataArray.count - )) {
[UIView animateWithDuration:0.3f animations:^{
self.sliderScrollView.contentOffset = CGPointMake(btnRight.frame.origin.x + btnRight.frame.size.width - VIEWWIDTH, );
}];
}
}
else
{
[UIView animateWithDuration:0.3f animations:^{
self.sliderScrollView.contentOffset = CGPointMake(btnLeft.frame.origin.x, );
}];
} if (![cache hasCacheIndex:_selectIndex]) {
[self addSubController];
}
}
/*
*创建未创建的滑块对应控制器
*/
-(void)addSubController
{
SubViewController *subVC = [SubViewController new];
subVC.index = _selectIndex;
subVC.tilte = _dataArray[_selectIndex];
[_mainScrollView addSubview:subVC.view];
subVC.view.frame = CGRectMake(_selectIndex*VIEWWIDTH,, VIEWWIDTH,_mainScrollView.frame.size.height);
subVC.view.backgroundColor = [UIColor colorWithHue:(arc4random() % / 256.0) saturation:(arc4random() % / 256.0) + 0.5 brightness:(arc4random() % ) + 0.5 alpha:];
[_mainScrollView addSubview:subVC.view]; [_fatherController addChildViewController:subVC];
}
/*
*UIScrollViewDelegate，控制滑动后变化
*/
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{
NSInteger index = scrollView.contentOffset.x/VIEWWIDTH;
_selectIndex = index;
for (NSInteger i = ; i < _dataArray.count; i++) {
UIButton *btn = (UIButton *)[self viewWithTag: + i];
UIView *downSliderView = (UIView *)[self viewWithTag: + i];
if (index == i) {
downSliderView.hidden = NO;
btn.selected = YES; }else{ downSliderView.hidden = YES;
btn.selected = NO;
} }
UIButton *btnRight = [_sliderScrollView viewWithTag:index + + ];
UIButton *btnCenter = [_sliderScrollView viewWithTag:index + ];
UIButton *btnLeft = [_sliderScrollView viewWithTag:index - + ];
//分页 显示哪个控制器
_mainScrollView.contentOffset = CGPointMake(index * VIEWWIDTH,);
if ((btnCenter.frame.origin.x + btnCenter.frame.size.width) > VIEWWIDTH - ){
if (btnCenter.tag != ( + _dataArray.count - )) {
[UIView animateWithDuration:0.3f animations:^{
_sliderScrollView.contentOffset = CGPointMake(btnRight.frame.origin.x + btnRight.frame.size.width - VIEWWIDTH, );
}];
}
}
else
{
[UIView animateWithDuration:0.3f animations:^{
_sliderScrollView.contentOffset = CGPointMake(btnLeft.frame.origin.x, );
}];
} if (![cache hasCacheIndex:_selectIndex]) {
[self addSubController]; }
} @end
// Cache.h #import <Foundation/Foundation.h> @interface Cache : NSObject
@property(nonatomic ,strong)NSMutableArray *cacheArray;
- (instancetype)init;
-(void)addCacheSelectIndex:(NSInteger)index;
-(BOOL)hasCacheIndex:(NSInteger)index; @end
//
// Cache.m #import "Cache.h" @implementation Cache - (instancetype)init
{
self = [super init];
if (self) {
_cacheArray = [[NSMutableArray alloc]init];
}
return self;
}
-(void)addCacheSelectIndex:(NSInteger)index
{
[_cacheArray addObject:[NSString stringWithFormat:@"%ld",index]];
} -(BOOL)hasCacheIndex:(NSInteger)index
{
BOOL hasIndex = [_cacheArray containsObject:[NSString stringWithFormat:@"%ld",index]];
if (!hasIndex) {
[self addCacheSelectIndex:index];
} return hasIndex;
} @end
//
// SubViewController.h #import <UIKit/UIKit.h> @interface SubViewController : UIViewController
@property(nonatomic,assign)NSInteger index;
@property(nonatomic,strong)NSString *tilte; @end
//
// SubViewController.m
#import "SubViewController.h"
#define VIEWWIDTH [UIScreen mainScreen].bounds.size.width
#define VIEWHEIGHT [UIScreen mainScreen].bounds.size.height
#define RAN_COLOR(CUS_RGB) [UIColor colorWithRed:((float)((CUS_RGB & 0xFF0000) >> 16))/255.0 green:((float)((CUS_RGB & 0xFF00) >> 8))/255.0 blue:((float)(CUS_RGB & 0xFF))/255.0 alpha:1.0f] @interface SubViewController () @end @implementation SubViewController - (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view. UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(, , , )];
label.layer.borderColor = [UIColor whiteColor].CGColor;
label.layer.borderWidth = ;
label.text = [NSString stringWithFormat:@"%ld:%@",_index,_tilte];
label.center = self.view.center;
label.textColor = [UIColor orangeColor];
label.font = [UIFont systemFontOfSize:];
label.textAlignment = NSTextAlignmentCenter;
[self.view addSubview:label]; } - (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
} @end