swiftpaginator's Introduction

SwiftPaginator

A simple Swift class for easier pagination.

This project was heavily inspired by NMPaginator

How to use

Copy SwiftPaginator.swift file into your project.

Create a subclass SwiftPaginator and override function func fetchResults(page: Int, pageSize: Int, completed:CompletedFetchBlock)

```Swift class PhotosPaginator:SwiftPaginator { var category:String?

override func fetchResults(page: Int, pageSize: Int, completed:CompletedFetchBlock) {
    var params = Mapper<PhotoParamsInfo>().map([String : AnyObject]())!
    params.feature = "fresh_today"
    params.only = category!
    params.size = "3,4,600,30"
    params.limit = NSNumber(integer: pageSize)
    params.page = NSNumber(integer:page)
    APIHelper.getPhotos(params) {(response, data, error) -> Void in
        dispatch_async(dispatch_get_main_queue(), {[weak self] () -> Void in
            if let _ = error {
                self?.fetchFailed(completed)
            }else {
                if let dictData = data as! [String:AnyObject]?, photos = dictData["photos"]{
                    let total = dictData["total_items"]?.integerValue
                    let arrPhotos = Mapper<PhotoObject>().mapArray(photos)!
                    self?.fetchSucceed(arrPhotos, totalPages: total!, completed: completed)
                }else{
                    self?.fetchFailed(completed)
                }
            }
        })
    }
}

}

<p>Init and usage SwiftPaginator instance in ViewController</p>
```Swift
  var paginator:PhotosPaginator = PhotosPaginator(size: 10)
  
  func refreshData(){
        refreshControl.endRefreshing()
        fetchFirstPage()
        vwPhotosCollectionView.reloadData()
        loading.startAnimating()
    }
    
    func fetchFinished(finished:Bool){
        if finished {
            loading.stopAnimating()
            vwPhotosCollectionView.reloadData()
        }else{
            loading.stopAnimating()
            showSimpleAlert("Error", message: "Cannot get photos!", presentingController: self)
        }
    }
    
    func fetchFirstPage(){
        paginator.fetchFirstPage { (finished) in
            self.fetchFinished(finished)
        }
    }
    
    func fetchNextPage(){
        paginator.fetchNextPage { (finished) in
            self.fetchFinished(finished)
        }
    }

You can see more detail in demo project

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