public InstantDocumentViewController(InstantDocumentInfo docInfo) : base(document: null)
{
//Create the Instant objects with the information from the web-preview server.
//The `PSPDFDocument` you get from Instant does not retain the objects that create it,
//so we need to keep references to the client and document descriptor otherwise with no
//strong references they would deallocate and syncing would stop.
client = new PSPDFInstantClient(NSUrl.FromString(docInfo.ServerUrl), out var err);
// Remove local storage before downloading in case the app crashed and we didn't remove it `ViewDidDisappear`.
client.RemoveLocalStorage(out var localStorageError);
documentDescriptor = client.GetDocumentDescriptor(docInfo.Jwt, out var error);
// Store document code and URL (which also contains the code) for sharing later.
documentCode = docInfo.EncodedDocumentId;
webUrl = NSUrl.FromString(docInfo.Url);
// Tell Instant to download the document from web-preview’s PSPDFKit Server instance.
documentDescriptor.Download(docInfo.Jwt, out var _);
// Get the `PSPDFDocument` from Instant.
Document = documentDescriptor.EditableDocument;
var collaborateItem = new UIBarButtonItem("Collaborate", UIBarButtonItemStyle.Plain, ShowCollaborationOptions);
var barButtonItems = new [] { collaborateItem, AnnotationButtonItem };
NavigationItem.SetRightBarButtonItems(barButtonItems, PSPDFViewMode.Document, false);
}
void ShowInstantDocument(InstantDocumentInfo documentInfo)
{
InstantClient.Create(this, documentInfo.ServerUrl).RemoveLocalStorage();
var builder = InstantPdfActivityIntentBuilder.FromInstantDocument(this, documentInfo.ServerUrl, documentInfo.Jwt);
var intent = builder
.Configuration(configuration)
.ActivityClass(Java.Lang.Class.FromType(typeof(InstantExampleActivity)))
.Build();
intent.PutExtra(InstantExampleActivity.DocumentDescriptor, documentInfo.ToJson());
StartActivity(intent);
Finish();
}
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
documentInfo = InstantDocumentInfo.FromJson(Intent.GetStringExtra(DocumentDescriptor));
if (documentInfo is null)
{
throw new InvalidOperationException("InstantExampleActivity was not initialized with proper arguments: Missing document descriptor extra!");
}
var a = Theme.ObtainStyledAttributes(null, Resource.Styleable.pspdf__ActionBarIcons, Resource.Attribute.pspdf__actionBarIconsStyle, Resource.Style.PSPDFKit_ActionBarIcons);
mainToolbarIconsColor = a.GetColor(Resource.Styleable.pspdf__ActionBarIcons_pspdf__iconsColor, ContextCompat.GetColor(this, Resource.Color.pspdf__color_white));
a.Recycle();
InitCollaborateMenu();
}
public async Task <InstantDocumentInfo> ResolveDocument(string code)
{
try {
var response = await httpClient.GetAsync($"{instantCodeEndpointUrl}/instant/{WebUtility.UrlEncode (code)}");
response.EnsureSuccessStatusCode();
// Do not allocate a string for the json reponse, read directly from the stream
using (var stream = await response.Content.ReadAsStreamAsync())
using (var reader = new StreamReader(stream))
using (var json = new JsonTextReader(reader)) {
return(InstantDocumentInfo.FromJson(json));
}
} catch (HttpRequestException ex) {
Console.WriteLine(ex.Message);
return(null);
}
}
public async Task <InstantDocumentInfo> CreateNewDocument()
{
try {
var response = await httpClient.PostAsync($"{instantCodeEndpointUrl}/instant-landing-page", null);
response.EnsureSuccessStatusCode();
// Do not allocate a string for the json reponse, read directly from the stream
using (var stream = await response.Content.ReadAsStreamAsync())
using (var reader = new StreamReader(stream))
using (var json = new JsonTextReader(reader)) {
return(InstantDocumentInfo.FromJson(json));
}
} catch (Exception ex) {
Console.WriteLine(ex.Message);
return(null);
}
}
public async Task <InstantDocumentInfo> ResolveDocument(Uri uri)
{
try {
var msg = new HttpRequestMessage();
msg.Headers.Add("Accept", "application/vnd.instant-example+json");
msg.RequestUri = uri;
var response = await httpClient.SendAsync(msg);
response.EnsureSuccessStatusCode();
// Do not allocate a string for the json reponse, read directly from the stream
using (var stream = await response.Content.ReadAsStreamAsync())
using (var reader = new StreamReader(stream))
using (var json = new JsonTextReader(reader)) {
return(InstantDocumentInfo.FromJson(json));
}
} catch (HttpRequestException ex) {
Console.WriteLine(ex.Message);
return(null);
}
}
public static void ToJson(this InstantDocumentInfo self, JsonTextWriter jsontw) => InstantDocumentInfo.serializer.Serialize(jsontw, self, typeof(InstantDocumentInfo));
public static string ToJson(this InstantDocumentInfo self) => JsonConvert.SerializeObject(self, Converter.Settings);
