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Scroll fragments to top from the tab bar

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This commit is contained in:
Grishka
2022-02-22 03:07:10 +03:00
parent f4e71cf130
commit d25b7e67b8
7 changed files with 45 additions and 27 deletions
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37
mastodon/src/main/java/org/joinmastodon/android/fragments/BaseStatusListFragment.java
View File

@@ -56,7 +56,7 @@ import me.grishka.appkit.utils.BindableViewHolder;
import me.grishka.appkit.utils.V;
import me.grishka.appkit.views.UsableRecyclerView;
public abstract class BaseStatusListFragment<T extends DisplayItemsParent> extends BaseRecyclerFragment<T> implements PhotoViewerHost{
public abstract class BaseStatusListFragment<T extends DisplayItemsParent> extends BaseRecyclerFragment<T> implements PhotoViewerHost, ScrollableToTop{
protected ArrayList<StatusDisplayItem> displayItems=new ArrayList<>();
protected DisplayItemsAdapter adapter;
protected String accountID;
@@ -377,22 +377,7 @@ public abstract class BaseStatusListFragment<T extends DisplayItemsParent> exten
Toolbar toolbar=getToolbar();
if(toolbar==null)
return;
toolbar.setOnClickListener(v->{
if(list.getChildCount()>0 && list.getChildAdapterPosition(list.getChildAt(0))>10){
list.scrollToPosition(0);
list.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener(){
@Override
public boolean onPreDraw(){
list.getViewTreeObserver().removeOnPreDrawListener(this);
list.scrollBy(0, V.dp(300));
list.smoothScrollToPosition(0);
return true;
}
});
}else{
list.smoothScrollToPosition(0);
}
});
toolbar.setOnClickListener(v->scrollToTop());
}
protected int getMainAdapterOffset(){
@@ -552,6 +537,24 @@ public abstract class BaseStatusListFragment<T extends DisplayItemsParent> exten
return holders;
}
@Override
public void scrollToTop(){
if(list.getChildCount()>0 && list.getChildAdapterPosition(list.getChildAt(0))>10){
list.scrollToPosition(0);
list.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener(){
@Override
public boolean onPreDraw(){
list.getViewTreeObserver().removeOnPreDrawListener(this);
list.scrollBy(0, V.dp(300));
list.smoothScrollToPosition(0);
return true;
}
});
}else{
list.smoothScrollToPosition(0);
}
}
protected class DisplayItemsAdapter extends UsableRecyclerView.Adapter<BindableViewHolder<StatusDisplayItem>> implements ImageLoaderRecyclerAdapter{
public DisplayItemsAdapter(){

5
mastodon/src/main/java/org/joinmastodon/android/fragments/HomeFragment.java
View File

@@ -158,6 +158,11 @@ public class HomeFragment extends AppKitFragment implements OnBackPressedListene
private void onTabSelected(@IdRes int tab){
Fragment newFragment=fragmentForTab(tab);
if(tab==currentTab){
if(newFragment instanceof ScrollableToTop)
((ScrollableToTop) newFragment).scrollToTop();
return;
}
getChildFragmentManager().beginTransaction().hide(fragmentForTab(currentTab)).show(newFragment).commit();
if(newFragment instanceof LoaderFragment){
LoaderFragment lf=(LoaderFragment) newFragment;

13
mastodon/src/main/java/org/joinmastodon/android/fragments/ProfileFragment.java
View File

@@ -83,7 +83,7 @@ import me.grishka.appkit.imageloader.requests.UrlImageLoaderRequest;
import me.grishka.appkit.utils.CubicBezierInterpolator;
import me.grishka.appkit.utils.V;
public class ProfileFragment extends LoaderFragment implements OnBackPressedListener{
public class ProfileFragment extends LoaderFragment implements OnBackPressedListener, ScrollableToTop{
private static final int AVATAR_RESULT=722;
private static final int COVER_RESULT=343;
@@ -430,10 +430,7 @@ public class ProfileFragment extends LoaderFragment implements OnBackPressedList
toolbarTitleView.setTranslationY(titleTransY);
toolbarSubtitleView.setTranslationY(titleTransY);
}
getToolbar().setOnClickListener(v->{
getScrollableRecyclerView().scrollToPosition(0);
scrollView.smoothScrollTo(0, 0);
});
getToolbar().setOnClickListener(v->scrollToTop());
}
@Override
@@ -798,6 +795,12 @@ public class ProfileFragment extends LoaderFragment implements OnBackPressedList
}
}
@Override
public void scrollToTop(){
getScrollableRecyclerView().scrollToPosition(0);
scrollView.smoothScrollTo(0, 0);
}
private class ProfilePagerAdapter extends RecyclerView.Adapter<SimpleViewHolder>{
@NonNull
@Override

5
mastodon/src/main/java/org/joinmastodon/android/fragments/ScrollableToTop.java Normal file
View File

@@ -0,0 +1,5 @@
package org.joinmastodon.android.fragments;
/*package*/ interface ScrollableToTop{
void scrollToTop();
}