void CancelPost(NSObject sender)
{
// Hides the keyboards and then returns back to SubmitPostViewController
HiddenText.EndEditing(true);
TagField.EndEditing(true);
DismissViewController(true, null);
}
void PublishPost(NSObject sender)
{
// Prevents multiple posting, locks as soon as a post is made
PostButton.Enabled = false;
UIActivityIndicatorView indicator = new UIActivityIndicatorView(UIActivityIndicatorViewStyle.Gray);
indicator.StartAnimating();
PostButton.CustomView = indicator;
// Hides the keyboards and dispatches a UI update to show the upload progress
HiddenText.EndEditing(true);
TagField.EndEditing(true);
ProgressBar.Hidden = false;
// Creates post record type and initizalizes all of its values
CKRecord newRecord = new CKRecord(Post.RecordType);
newRecord [Post.FontKey] = (NSString)ImageLabel.Font.Name;
newRecord [Post.ImageRefKey] = new CKReference(ImageRecord.Record.Id, CKReferenceAction.DeleteSelf);
newRecord [Post.TextKey] = (NSString)HiddenText.Text;
string[] tags = TagField.Text.ToLower().Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
newRecord [Post.TagsKey] = NSArray.FromObjects(tags);
Post newPost = new Post(newRecord);
newPost.ImageRecord = ImageRecord;
// Only upload image record if it is not on server, otherwise just upload the new post record
CKRecord[] recordsToSave = ImageRecord.IsOnServer
? new CKRecord[] { newRecord }
: new CKRecord[] { newRecord, ImageRecord.Record };
// TODO: https://trello.com/c/A9T8Spyp second param is null
CKModifyRecordsOperation saveOp = new CKModifyRecordsOperation(recordsToSave, new CKRecordID[0]);
saveOp.PerRecordProgress = (CKRecord record, double progress) => {
// Image record type is probably going to take the longest to upload. Reflect it's progress in the progress bar
if (record.RecordType == Image.RecordType)
{
InvokeOnMainThread(() => {
var val = (float)(progress * 0.95);
ProgressBar.SetProgress(val, true);
});
}
};
// When completed it notifies the tableView to add the post we just uploaded, displays error if it didn't work
saveOp.Completed = (CKRecord[] savedRecords, CKRecordID[] deletedRecordIDs, NSError operationError) => {
Error errorResponse = HandleError(operationError);
switch (errorResponse)
{
case Error.Success:
// Tells delegate to update so it can display our new post
InvokeOnMainThread(() => {
DismissViewController(true, null);
MainController.Submit(newPost);
});
break;
case Error.Retry:
CKErrorInfo errorInfo = new CKErrorInfo(operationError.UserInfo);
nint retryAfter = errorInfo.RetryAfter.HasValue ? errorInfo.RetryAfter.Value : 3;
Console.WriteLine("Error: {0}. Recoverable, retry after {1} seconds", operationError.Description, retryAfter);
Task.Delay((int)retryAfter * 1000).ContinueWith(_ => PublishPost(sender));
break;
case Error.Ignore:
Console.WriteLine("Error saving record: {0}", operationError.Description);
string errorTitle = "Error";
string dismissButton = "Okay";
string errorMessage = operationError.Code == (long)CKErrorCode.NotAuthenticated
? "You must be logged in to iCloud in order to post"
: "Unrecoverable error with the upload, check console logs";
InvokeOnMainThread(() => {
UIAlertController alert = UIAlertController.Create(errorTitle, errorMessage, UIAlertControllerStyle.Alert);
alert.AddAction(UIAlertAction.Create(dismissButton, UIAlertActionStyle.Cancel, null));
PostButton.Enabled = true;
PresentViewController(alert, true, null);
ProgressBar.Hidden = true;
PostButton.CustomView = null;
});
break;
default:
throw new NotImplementedException();
}
};
CKContainer.DefaultContainer.PublicCloudDatabase.AddOperation(saveOp);
}