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Code Issues Projects Releases Wiki Activity

[android] save list position of main blog feed

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This commit is contained in:
Torsten Grote
2019-02-28 14:02:49 -03:00
parent 50bd4cce6b
commit 741eae34e9
1 changed files with 25 additions and 1 deletions
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26
briar-android/src/main/java/org/briarproject/briar/android/blog/FeedFragment.java
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@@ -2,6 +2,7 @@ package org.briarproject.briar.android.blog;
import android.content.Intent;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.annotation.UiThread;
import android.support.design.widget.Snackbar;
import android.support.v4.content.ContextCompat;
@@ -54,7 +55,10 @@ public class FeedFragment extends BaseFragment implements
private BlogPostAdapter adapter;
private LinearLayoutManager layoutManager;
private BriarRecyclerView list;
private Blog personalBlog = null;
@Nullable
private Blog personalBlog;
@Nullable
private Parcelable layoutManagerState;
public static FeedFragment newInstance() {
FeedFragment f = new FeedFragment();
@@ -91,6 +95,11 @@ public class FeedFragment extends BaseFragment implements
list.setEmptyText(R.string.blogs_feed_empty_state);
list.setEmptyAction(R.string.blogs_feed_empty_state_action);
if (savedInstanceState != null) {
layoutManagerState =
savedInstanceState.getParcelable("layoutManager");
}
return v;
}
@@ -123,6 +132,15 @@ public class FeedFragment extends BaseFragment implements
// TODO save list position in database/preferences?
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
if (layoutManager != null) {
layoutManagerState = layoutManager.onSaveInstanceState();
outState.putParcelable("layoutManager", layoutManagerState);
}
}
private void loadPersonalBlog() {
feedController.loadPersonalBlog(
new UiResultExceptionHandler<Blog, DbException>(this) {
@@ -150,6 +168,12 @@ public class FeedFragment extends BaseFragment implements
if (clear) adapter.setItems(posts);
else adapter.addAll(posts);
if (posts.isEmpty()) list.showData();
if (layoutManagerState == null) {
list.scrollToPosition(0); // Scroll to the top
} else {
layoutManager.onRestoreInstanceState(
layoutManagerState);
}
} else {
LOG.info("Concurrent update, reloading");
loadBlogPosts(clear);