目录
1.1 引导页实现
1.2 轮播图实现
1.1 引导页实现
#import <UIKit/UIKit.h>
block 回调点击事件
typedef void(^BlockBackResetMessage)();
@interface DidDisplayPageViewController : UIViewController
//进入首页提示展示图
@property (nonatomic ,copy)BlockBackResetMessage blockBackResetMessage;
@end
#import "DidDisplayPageViewController.h"
//宏定义
#define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width //屏幕宽度
#define SCREEN_HEIGHT [UIScreen mainScreen].bounds.size.height //屏幕高度
#define HEIGHT4 480
#define HEIGHT5 568
#define HEIGHT6 667
#define HEIGHT6P 736
@interface DidDisplayPageViewController ()
@property (nonatomic ,strong)UIScrollView *mainScrollView;
@property (nonatomic ,strong)UIPageControl *mainPageControl;
@end
@implementation DidDisplayPageViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
[self createScrollView];
[self createQuiteButton];
[self createPageControl];
}
- (void)createScrollView{
self.automaticallyAdjustsScrollViewInsets = NO;
self.mainScrollView=[[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT)];
self.mainScrollView.delegate = self;
self.mainScrollView.showsHorizontalScrollIndicator = NO;
NSArray *array=[NSArray arrayWithObjects:@"引导页1",@"引导页2",@"引导页3", nil];
for (int i=0; i < 3; i++) {
UIImage *image = [UIImage imageNamed:[array objectAtIndex:i]];
UIImageView *imageView = [[UIImageView alloc]initWithFrame:
CGRectMake(SCREEN_WIDTH*i, 0, SCREEN_WIDTH, SCREEN_HEIGHT)];
imageView.image=image;
[self.mainScrollView addSubview:imageView];
}
//按页滚动
self.mainScrollView.pagingEnabled=YES;
//偏移量
self.mainScrollView.contentSize=CGSizeMake(SCREEN_WIDTH*3, SCREEN_HEIGHT);
//竖直滚动条隐藏
self.mainScrollView.showsHorizontalScrollIndicator=NO;
默认YES，一般为NO，否者有颤抖
self.mainScrollView.bounces = NO;
[self.view addSubview: self.mainScrollView];
}
处理大雨或者小于时候的滑动
- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
if (self.mainScrollView.contentOffset.x <= 0) {
self.mainScrollView.contentOffset= CGPointMake(0, 0);
}
if (self.mainScrollView.contentOffset.x >= SCREEN_WIDTH*2) {
self.mainScrollView.contentOffset= CGPointMake(SCREEN_WIDTH*2, 0);
}
}
- (void)createQuiteButton{
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
self.mainScrollView.userInteractionEnabled=YES;
if (SCREEN_HEIGHT ==HEIGHT5) {
button.frame = CGRectMake(SCREEN_WIDTH*2+(SCREEN_WIDTH - 145)/2.0f,
SCREEN_HEIGHT-120, 145, 35);
}else{
button.frame = CGRectMake(SCREEN_WIDTH*2+(SCREEN_WIDTH - 145)/2.0f,
SCREEN_HEIGHT-140, 145, 35);
}
[button setImage:[UIImage imageNamed:@"display"] forState:UIControlStateNormal];
[button addTarget:self action:@selector(removeQuiteButton)
forControlEvents:UIControlEventTouchUpInside];
[self.mainScrollView addSubview:button];
}
- (void)removeQuiteButton{
[[NSUserDefaults standardUserDefaults]setObject:@(YES) forKey:@"DisplayPage"];
[[NSUserDefaults standardUserDefaults]synchronize];
if(self.blockBackResetMessage){
self.blockBackResetMessage();
}
[self dismissViewControllerAnimated:YES completion:nil];
}
//创建滚动偏移点
- (void)createPageControl{
self.mainPageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(0,SCREEN_HEIGHT - 65,SCREEN_WIDTH,20)];
self.mainPageControl.numberOfPages = 3;
self.mainPageControl.currentPage = 0;
self.mainPageControl.pageIndicatorTintColor = [JDSiliconValley colorWithRGBValue:0xe8e8e8];
self.mainPageControl.currentPageIndicatorTintColor = [JDSiliconValley colorWithRGBValue:0xd1d1d1];
self.mainPageControl.userInteractionEnabled = YES;
[self.view addSubview:self.mainPageControl];
}
滚动视图和PageControl联动
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{
NSLog(@"x:%f",scrollView.contentOffset.x);
NSLog(@"y:%f",scrollView.contentOffset.y);
CGPoint pt = scrollView.contentOffset;
//通过scrollView的偏移量,更新⻚页码显⽰示
self.mainPageControl.currentPage = pt.x/SCREEN_WIDTH;
}
displayPage2.png
网友评论