This blog andBlog.csdn.net/codingfire/…It is the same, but the blogger used Swift to write the original object-C code again, which also used the proxy method, create data model, in the development is more commonly used.
The effect is the same, here is the code:
import UIKit
//写在类别外面类似于#define
let WIDTH = UIScreen.mainScreen().bounds.size.width
let HEIGHT = UIScreen.mainScreen().bounds.size.height
protocol TopScrollViewDelegate {
/*
*UIScrollViewDelegate 协议方法，把点击的图片的位置传给使用者
*/
func didClickScrollView(index:NSInteger)
}
class TopScrollView: UIView,UIScrollViewDelegate {
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
override func drawRect(rect: CGRect) {
// Drawing code
}
*/
var _mainScrollView = UIScrollView()
var contentLabel = UILabel()
var currentImageView = UIImageView()
var _currentIndex: NSInteger!
var _dataArray = NSMutableArray()
var pageSubView = UIView()
var delegate:TopScrollViewDelegate!
/*
*初始化scrollView及其部件
*/
init(frame: CGRect, dataArray:NSMutableArray) {
super.init(frame:frame)
_mainScrollView.frame = CGRectMake(0, 0, WIDTH, 170)
_mainScrollView.contentSize = CGSizeMake(WIDTH*3, 170)
_mainScrollView.backgroundColor = UIColor.whiteColor()
_mainScrollView.delegate = self
_mainScrollView.pagingEnabled = true
_mainScrollView.userInteractionEnabled = true
_mainScrollView.showsHorizontalScrollIndicator = false
_mainScrollView.showsVerticalScrollIndicator = false
_mainScrollView.bounces = false;
_mainScrollView.contentOffset = CGPointMake(WIDTH, 0)
self.addSubview(_mainScrollView)
_currentIndex = 0;
_dataArray.setArray(dataArray as [AnyObject])
self.setUpDataDataArray(_dataArray)
self.cretPageControlAndTitle()
// 手势
let tap = UITapGestureRecognizer(target: self, action: #selector(self.tapCLick))
currentImageView.addGestureRecognizer(tap)
NSTimer.scheduledTimerWithTimeInterval(4, target: self, selector: #selector(self.timerAction), userInfo: nil, repeats: true)
}
required init?(coder aDecoder: NSCoder) {
super.init(coder:aDecoder)
}
/*
*此处为scrollView的复用，比目前网上大部分的同类型控件油画效果好，只需要三张图片依次替换即可实现轮播，不需要有几张图就使scrollView的contentSize为图片数＊宽度
*/
func setUpDataDataArray(dataArray:NSArray) {
for var view in _mainScrollView.subviews {
if view.isKindOfClass(UIImageView) {
view.removeFromSuperview()
}
}
// 中间图
currentImageView.sd_setImageWithURL(NSURL(string: (dataArray[_currentIndex] as! DataModel).imgURL as String))
currentImageView.userInteractionEnabled = true;
currentImageView.frame = CGRectMake(WIDTH, 0, WIDTH, 170);
_mainScrollView.addSubview(currentImageView)
// 左侧图
let preImageView = UIImageView()
let imageStr = _currentIndex - 1 >= 0 ? (dataArray[_currentIndex-1] as! DataModel).imgURL as String : (dataArray.lastObject as! DataModel).imgURL as String
preImageView.userInteractionEnabled = true
preImageView.sd_setImageWithURL(NSURL(string: imageStr))
preImageView.frame = CGRectMake(0, 0, WIDTH, 170)
_mainScrollView.addSubview(preImageView)
// 右侧
let nextImageView = UIImageView()
let imageStr1 = _currentIndex + 1 < dataArray.count ? (dataArray[_currentIndex+1] as! DataModel).imgURL as String : (dataArray.firstObject as! DataModel).imgURL as String
nextImageView.userInteractionEnabled = true
nextImageView.sd_setImageWithURL(NSURL(string: imageStr1))
nextImageView.frame = CGRectMake(WIDTH*2, 0, WIDTH, 170)
_mainScrollView.addSubview(nextImageView)
}
/*
*创建标题和pageControl，此处pageCOntrol为自定义的，如需要可修改为系统的，或更换图片即可
*/
func cretPageControlAndTitle() {
contentLabel.frame = CGRectMake(0, self.frame.size.height-30, WIDTH, 30);
contentLabel.textAlignment = .Left;
contentLabel.font = UIFont.systemFontOfSize(12)
contentLabel.text = (_dataArray.firstObject as! DataModel).title as String
contentLabel.backgroundColor = UIColor.blackColor()
contentLabel.textColor = UIColor.whiteColor()
contentLabel.alpha = 0.6;
self.addSubview(contentLabel)
pageSubView.frame = CGRectMake(0, self.frame.size.height-30, WIDTH, 30)
pageSubView.backgroundColor = UIColor.clearColor()
self.addSubview(pageSubView)
for index in 0..<_dataArray.count {
let imageView = UIImageView(image: UIImage.init(named: "[email protected]"))
imageView.frame = CGRectMake(WIDTH-(CGFloat(_dataArray.count)*12)-10+CGFloat(index)*12, 11, 7, 7)
if index == 0
{
imageView.image = UIImage.init(named: "[email protected]")
}
pageSubView.addSubview(imageView)
}
}
/*
*图片的代理点击响应方法
*/
func tapCLick() {
delegate.didClickScrollView(_currentIndex)
}
/*
*定时器方法，使banner页无限轮播
*/
func timerAction() {
let imageView = pageSubView.subviews[_currentIndex] as! UIImageView
imageView.image = UIImage.init(named: "[email protected]")
if _currentIndex+1 < _dataArray.count {
_currentIndex = _currentIndex + 1;
}
else
{
_currentIndex=0;
}
UIView.animateWithDuration(1, animations: {
self._mainScrollView.contentOffset = CGPointMake(WIDTH*2, 0)
},completion: {
(finished) in
self._mainScrollView.contentOffset = CGPointMake(WIDTH, 0)
self.setUpDataDataArray(self._dataArray)
})
contentLabel.text = (_dataArray[_currentIndex] as! DataModel).title as String
let imageView1 = pageSubView.subviews[_currentIndex] as! UIImageView
imageView1.image = UIImage.init(named: "[email protected]")
}
/*
*UIScrollViewDelegate 协议方法，拖动图片的处理方法
*/
func scrollViewDidEndDecelerating(scrollView: UIScrollView) {
if scrollView == _mainScrollView
{
let imageView = pageSubView.subviews[_currentIndex] as! UIImageView
imageView.image = UIImage.init(named: "[email protected]")
let index = scrollView.contentOffset.x/WIDTH;
if index > 1
{
_currentIndex = _currentIndex + 1 < _dataArray.count ? _currentIndex+1 : 0;
UIView.animateWithDuration(1, animations: {
self._mainScrollView.contentOffset = CGPointMake(WIDTH*2, 0)
},completion: {
(finished) in
self._mainScrollView.contentOffset = CGPointMake(WIDTH, 0)
self.setUpDataDataArray(self._dataArray)
})
}
else if index < 1
{
_currentIndex = _currentIndex - 1 >= 0 ? _currentIndex-1 : _dataArray.count - 1;
UIView.animateWithDuration(1, animations: {
self._mainScrollView.contentOffset = CGPointMake(0, 0)
},completion: {
(finished) in
self._mainScrollView.contentOffset = CGPointMake(WIDTH, 0)
self.setUpDataDataArray(self._dataArray)
})
}
else
{
print("没滚动不做任何操作")
}
contentLabel.text = (_dataArray[_currentIndex] as! DataModel).title as String
let imageView1 = pageSubView.subviews[_currentIndex] as! UIImageView
imageView1.image = UIImage.init(named: "[email protected]")
}
}
}
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