The preferred way of installing is via the Swift Package Manager.
Xcode 11 integrates with libSwiftPM to provide support for iOS, watchOS, and tvOS platforms.
- In Xcode, open your project and navigate to File → Swift Packages → Add Package Dependency...
- Paste the repository URL (
https://github.com/rajubd49/PDFViewer.git) and click Next. - For Rules, select Branch (with branch set to
1.0.2). - Click Finish.
import SwiftUI
import PDFViewer
struct ContentView: View, DownloadManagerDelegate {
@State private var viewLocalPDF = false
@State private var viewRemotePDF = false
@State private var loadingPDF: Bool = false
@State private var progressValue: Float = 0.0
@ObservedObject var downloadManager = DownloadManager.shared()
let pdfName = "sample"
let pdfUrlString = "http://www.africau.edu/images/default/sample.pdf"
var body: some View {
NavigationView {
ZStack {
VStack {
NavigationLink(destination: PDFViewer(pdfName: pdfName), isActive: $viewLocalPDF) {
Button("View Local PDF"){
self.viewLocalPDF = true
}
.padding(.bottom, 20)
}
Button("View Remote PDF"){
if self.fileExistsInDirectory() {
self.viewRemotePDF = true
} else {
self.downloadPDF(pdfUrlString: self.pdfUrlString)
}
}
if self.viewRemotePDF {
NavigationLink(destination: PDFViewer(pdfUrlString: self.pdfUrlString), isActive: self.$viewRemotePDF) {
EmptyView()
}.hidden()
}
}
ProgressView(value: self.$progressValue, visible: self.$loadingPDF)
}
.navigationBarTitle("PDFViewer", displayMode: .inline)
}
}
private func fileExistsInDirectory() -> Bool {
if let cachesDirectoryUrl = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask).first, let lastPathComponent = URL(string: self.pdfUrlString)?.lastPathComponent {
let url = cachesDirectoryUrl.appendingPathComponent(lastPathComponent)
if FileManager.default.fileExists(atPath: url.path) {
return true
}
}
return false
}
private func downloadPDF(pdfUrlString: String) {
guard let url = URL(string: pdfUrlString) else { return }
downloadManager.delegate = self
downloadManager.downloadFile(url: url)
}
//MARK: DownloadManagerDelegate
func downloadDidFinished(success: Bool) {
if success {
loadingPDF = false
viewRemotePDF = true
}
}
func downloadDidFailed(failure: Bool) {
if failure {
loadingPDF = false
print("PDFCatalogueView: Download failure")
}
}
func downloadInProgress(progress: Float, totalBytesWritten: Float, totalBytesExpectedToWrite: Float) {
loadingPDF = true
progressValue = progress
}
}- View local PDF
- Download PDF from remote url and save in cache directory to view PDF
- PDF thumbnail view show
- PDF view page change notification
- PDF view annotation hit notification
- Share PDF file
PDFViewer is released under the MIT License. See LICENSE for details.