滚动视图和页面控制UIScollView，UIpageControlDemo
//
// ViewController.m
// UIScollView
//
// Created by hehe on 15/9/25.
// Copyright (c) 2015年 wang.hehe. All rights reserved.
//
#import "ViewController.h"
#define width_screen self.view.bounds.size.width
#define height_screen self.view.bounds.size.height
@interface ViewController ()
{
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor grayColor];
[self createUiScroview]; //创建滚动视图
[self createLabel]; //第几页
[self creatUIPageControl]; //创建页面控制器
}
#pragma mark ------------------------createLabel
- (void)createLabel
{
UILabel *label= [[UILabel alloc]init];
label.frame = CGRectMake(0, height_screen-50, 50, 50);
label.text = @"第一页";
label.textColor = [UIColor redColor];
label.font = [UIFont systemFontOfSize:20];
label.textAlignment = 1;
label.adjustsFontSizeToFitWidth = YES;
[self.view addSubview:label];
label.tag = 11;
}
#pragma mark ------------------------creatUIPageControl
- (void)creatUIPageControl
{
UIPageControl *pc = [[UIPageControl alloc] init];
pc.frame = CGRectMake(100, height_screen-30, 200, 30);
[self.view addSubview:pc];
pc.numberOfPages = 4; //多少页
pc.currentPage = 1; //当前页数
pc.pageIndicatorTintColor = [UIColor greenColor]; //页的颜色
pc.currentPageIndicatorTintColor = [UIColor orangeColor];//当前页颜色
pc.backgroundColor = [UIColor whiteColor];//加背景颜色
[self.view addSubview:pc];
pc.tag = 101;
}
#pragma mark ------------------------滚动视图协议方法
//实现代理的方法
- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView
{
//实现缩放功能，需要两步，第二部
//在滚动视图中对哪一个视图进行缩放
return scrollView.subviews[0];
}
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
UILabel *label1 = (id)[self.view viewWithTag:11];
UIPageControl *pc1 = (id)[self.view viewWithTag:101];
int offset = scrollView.contentOffset.x/self.view.bounds.size.width;
if(offset==5)
{
scrollView.contentOffset = CGPointMake(self.view.bounds.size.width*1, 0);
}
else if (offset==0)
{
scrollView.contentOffset = CGPointMake(self.view.bounds.size.width*4, 0);
}
switch (offset)
{
case 0:
{
label1.text = @"第四页";
pc1.currentPage = 3;
break;
}
case 1:
{
pc1.currentPage = 0;
label1.text = @"第一页";
break;
}
case 2:
{
pc1.currentPage = 1;
label1.text = @"第二页";
break;
}
case 3:
{
pc1.currentPage = 2;
label1.text = @"第三页";
break;
}
case 4:
{
pc1.currentPage = 3;
label1.text = @"第四页";
break;
}
case 5:
{
pc1.currentPage = 0;
label1.text = @"第一页";
break;
}
default:
break;
}
}
- (void)createUiScroview
{
//创建滚动视图对象
UIScrollView *sv = [[UIScrollView alloc] init];
sv.frame = self.view.bounds;
[self.view addSubview:sv];
sv.backgroundColor = [UIColor orangeColor];
sv.contentOffset = CGPointMake(self.view.bounds.size.width,0); //偏移量是一个点
//设置每页的图片，大小
for(int i=0;i<6;i++)
{
UIImageView *iv = [[UIImageView alloc] initWithFrame:CGRectMake(self.view.bounds.size.width*i, 0, self.view.bounds.size.width, self.view.bounds.size.height)];
[sv addSubview:iv];
if(i==0)
{
iv.image = [UIImage imageNamed:@"3"];
}
else if (i==5)
{
iv.image = [UIImage imageNamed:@"0"];
}
else
{
iv.image = [UIImage imageNamed:[NSString stringWithFormat:@"%d",i-1]];
}
}
sv.contentSize = CGSizeMake(self.view.bounds.size.width*6, self.view.bounds.size.height);
//UIImageView *iv = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"4.jpg"]];//这个方法加入的原图大小
sv.bounces = NO; //控制是否反弹，默认是反弹的
sv.indicatorStyle = UIScrollViewIndicatorStyleWhite;//设置滚动条的样式
sv.scrollIndicatorInsets = UIEdgeInsetsMake(0, 0 , 0, 30);//设置滚动条的位置
sv.showsVerticalScrollIndicator = NO;//设置隐藏滚动条
sv.showsHorizontalScrollIndicator = NO;
//sv.scrollEnabled = NO;//设置是否滚动,让不让滚动
sv.pagingEnabled = YES; //按页滚动,最后必须进去某一页//设置按页滚动
sv.scrollsToTop = NO; //默认是Yes//设置在下边的时候可以回到顶部
sv.delegate = self; //有代理<UIScrollViewDelegate>
//设置pinch第一步
sv.minimumZoomScale = 0.5;//最小缩放比例，默认值是1
sv.maximumZoomScale = 5;
//设置减速率:1往后的差不多,值越大挺的越慢
sv.decelerationRate = 0;
}
@end
