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Code Issues Releases Wiki Activity

Attempt to keep scroll position on rotating

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This commit is contained in:
M66B 2020-09-04 16:56:00 +02:00
parent 2c88095ea3
commit 4394843878
2 changed files with 17 additions and 0 deletions
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11
app/src/main/java/eu/faircode/email/AdapterMessage.java
View file

@ -264,6 +264,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
private static boolean debug;
private boolean gotoTop = false;
private Integer gotoPos = null;
private boolean firstClick = false;
private int searchResult = 0;
private AsyncPagedListDiffer<TupleMessageEx> differ;
@ -5441,6 +5442,11 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
}
}
if (gotoPos != null && currentList != null && currentList.size() > 0) {
properties.scrollTo(gotoPos, 0);
gotoPos = null;
}
if (selectionTracker != null && selectionTracker.hasSelection()) {
Selection<Long> selection = selectionTracker.getSelection();
@ -5530,6 +5536,11 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
this.gotoTop = true;
}
void gotoPos(int pos) {
if (pos != RecyclerView.NO_POSITION)
gotoPos = pos;
}
void submitList(PagedList<TupleMessageEx> list) {
for (int i = 0; i < list.size(); i++) {
TupleMessageEx message = list.get(i);

6
app/src/main/java/eu/faircode/email/FragmentMessages.java
View file

@ -300,6 +300,7 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
private SelectionPredicateMessage selectionPredicate = null;
private SelectionTracker<Long> selectionTracker = null;
private Integer scroll = null;
private Long prev = null;
private Long next = null;
private Long closeId = null;
@ -3373,6 +3374,9 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
if (rvMessage != null) {
Parcelable rv = rvMessage.getLayoutManager().onSaveInstanceState();
outState.putParcelable("fair:rv", rv);
LinearLayoutManager llm = (LinearLayoutManager) rvMessage.getLayoutManager();
outState.putInt("fair:scroll", llm.findFirstVisibleItemPosition());
}
if (selectionTracker != null)
@ -3402,6 +3406,8 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
rvMessage.getLayoutManager().onRestoreInstanceState(rv);
}
adapter.gotoPos(savedInstanceState.getInt("fair:scroll"));
if (selectionTracker != null)
selectionTracker.onRestoreInstanceState(savedInstanceState);
}