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Code Issues Pull Requests Releases Wiki Activity

scroll to bottom even if last visible item is heigher than view

This commit is contained in:
Daniel Gultsch 2018-04-22 16:01:18 +02:00
parent 2a9413e64d
commit cfaebbdbd1
1 changed files with 22 additions and 12 deletions
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30
src/main/java/eu/siacs/conversations/ui/ConversationFragment.java
View File

@ -92,7 +92,6 @@ import eu.siacs.conversations.ui.util.ScrollState;
import eu.siacs.conversations.ui.util.SendButtonAction;
import eu.siacs.conversations.ui.util.SendButtonTool;
import eu.siacs.conversations.ui.widget.EditMessage;
import eu.siacs.conversations.utils.ExceptionHelper;
import eu.siacs.conversations.utils.MessageUtils;
import eu.siacs.conversations.utils.NickValidityChecker;
import eu.siacs.conversations.utils.QuickLoader;
@ -374,7 +373,7 @@ public class ConversationFragment extends XmppFragment implements EditMessage.Ke
@Override
public void onClick(View v) {
stopScrolling();
setSelection(binding.messagesView.getCount() - 1);
setSelection(binding.messagesView.getCount() - 1, true);
}
};
private OnClickListener mSendButtonListener = new OnClickListener() {
@ -1938,13 +1937,16 @@ public class ConversationFragment extends XmppFragment implements EditMessage.Ke
final Message first = conversation.getFirstUnreadMessage();
final int bottom = Math.max(0, this.messageList.size() - 1);
final int pos;
final boolean jumpToBottom;
if (first == null) {
pos = bottom;
jumpToBottom = true;
} else {
int i = getIndexOf(first.getUuid(), this.messageList);
pos = i < 0 ? bottom : i;
jumpToBottom = false;
}
setSelection(pos);
setSelection(pos, jumpToBottom);
}
}
@ -1969,17 +1971,25 @@ public class ConversationFragment extends XmppFragment implements EditMessage.Ke
this.binding.unreadCountCustomView.setVisibility(View.GONE);
}
private void setSelection(int pos) {
this.binding.messagesView.setSelection(pos);
this.binding.messagesView.post(() -> this.binding.messagesView.setSelection(pos));
private void setSelection(int pos, boolean jumpToBottom) {
setSelection(this.binding.messagesView, pos, jumpToBottom);
this.binding.messagesView.post(() -> setSelection(this.binding.messagesView, pos, jumpToBottom));
this.binding.messagesView.post(this::fireReadEvent);
}
private boolean scrolledToBottom() {
if (this.binding == null) {
return false;
private static void setSelection(final ListView listView, int pos, boolean jumpToBottom) {
if (jumpToBottom) {
final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
if (lastChild != null) {
listView.setSelectionFromTop(pos, -lastChild.getHeight());
return;
}
return scrolledToBottom(this.binding.messagesView);
}
listView.setSelection(pos);
}
private boolean scrolledToBottom() {
return this.binding != null && scrolledToBottom(this.binding.messagesView);
}
private void processExtras(Bundle extras) {