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Code Issues Projects Releases Wiki Activity

Hopefully fix scrolling issue

This commit is contained in:
Niels Andriesse 2021-08-03 10:41:24 +10:00
parent e8d8377a04
commit c5c75a306e
1 changed files with 14 additions and 4 deletions
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18
Session/Conversations/ConversationVC.swift
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@ -55,6 +55,11 @@ final class ConversationVC : BaseVC, ConversationViewModelDelegate, OWSConversat
return messagesTableView.contentSize.height - tableViewUnobscuredHeight
}
var isCloseToBottom: Bool {
let margin = (self.lastPageTop - self.messagesTableView.contentOffset.y)
return margin <= ConversationVC.scrollToBottomMargin
}
lazy var mnemonic: String = {
let identityManager = OWSIdentityManager.shared()
let databaseConnection = identityManager.value(forKey: "dbConnection") as! YapDatabaseConnection
@ -314,6 +319,13 @@ final class ConversationVC : BaseVC, ConversationViewModelDelegate, OWSConversat
baselineKeyboardHeight = newHeight
self.messagesTableView.keyboardHeight = newHeight
}
let margin = (self.lastPageTop - self.messagesTableView.contentOffset.y)
// HACK: If the keyboard is coming up and we're very close to the bottom, scroll to the
// bottom. This "fixes" an issue where the conversation would randomly scroll up sometimes
// when bringing up the keyboard.
if newHeight > 200 && margin <= 2 {
scrollToBottom(isAnimated: false)
}
scrollButtonConstraint?.constant = -(newHeight + 16)
let newContentOffsetY = max(self.messagesTableView.contentOffset.y + min(lastPageTop, 0) + newHeight - self.messagesTableView.keyboardHeight, 0.0)
self.messagesTableView.contentOffset.y = newContentOffsetY
@ -353,13 +365,11 @@ final class ConversationVC : BaseVC, ConversationViewModelDelegate, OWSConversat
if update.viewItem?.interaction is TSOutgoingMessage {
shouldScrollToBottom = true
} else {
let margin = (self.lastPageTop - self.messagesTableView.contentOffset.y)
shouldScrollToBottom = margin <= ConversationVC.scrollToBottomMargin
shouldScrollToBottom = self.isCloseToBottom
}
case .update:
self.messagesTableView.reloadRows(at: [ IndexPath(row: Int(update.oldIndex), section: 0) ], with: .fade)
let margin = (self.lastPageTop - self.messagesTableView.contentOffset.y)
shouldScrollToBottom = margin <= ConversationVC.scrollToBottomMargin
shouldScrollToBottom = self.isCloseToBottom
default: preconditionFailure()
}
}