It is due to the app:layout_anchor attribute. You must get rid of the anchor before changing visibility: CoordinatorLayout.LayoutParams p = (CoordinatorLayout.LayoutParams) fab.getLayoutParams(); p.setAnchorId(View.NO_ID); fab.setLayoutParams(p); fab.setVisibility(View.GONE);
If you’re using RecyclerView and you’re looking for something simple, you can try this: recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener(){ @Override public void onScrolled(RecyclerView recyclerView, int dx, int dy){ if (dy > 0) fabAddNew.hide(); else if (dy < 0) fabAddNew.show(); } }); By replacing 0 with a constant, you can adjust the sensitivity of triggering, providing smoother experience
The standard ScrollView is only meant to be used as a parent. You need to change the ScrollView to a android.support.v4.widget.NestedScrollView. An example can be seen in the reference documentation for AppBarLayout.
Chris Banes has posted a sample on Github which shows exactly what you want to do. Here is the xml file that defines how one can indirectly attach a coordinator layout to the viewpager’s fragments. <android.support.design.widget.CoordinatorLayout xmlns:android=”http://schemas.android.com/apk/res/android” xmlns:app=”http://schemas.android.com/apk/res-auto” android:id=”@+id/main_content” android:layout_width=”match_parent” android:layout_height=”match_parent”> <android.support.design.widget.AppBarLayout android:id=”@+id/appbar” android:layout_width=”match_parent” android:layout_height=”wrap_content” android:theme=”@style/ThemeOverlay.AppCompat.Dark.ActionBar”> <android.support.v7.widget.Toolbar android:id=”@+id/toolbar” android:layout_width=”match_parent” android:layout_height=”?attr/actionBarSize” android:background=”?attr/colorPrimary” app:popupTheme=”@style/ThemeOverlay.AppCompat.Light” app:layout_scrollFlags=”scroll|enterAlways” /> <android.support.design.widget.TabLayout … Read more
To reset the scroll state, just get the AppBarLayout.Behavior object CoordinatorLayout coordinator = (CoordinatorLayout) findViewById(R.id.coordinator); AppBarLayout appbar = (AppBarLayout) findViewById(R.id.appbar); CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) appbar.getLayoutParams(); AppBarLayout.Behavior behavior = (AppBarLayout.Behavior) params.getBehavior(); and call onNestedPreScroll method manually: int[] consumed = new int[2]; behavior.onNestedPreScroll(coordinator, appbar, null, 0, -1000, consumed); If you would like to reset smoothly with an … Read more
Simply setting app:borderWidth=”0dp” resolve this issues for me. Note: don’t forget to add xmlns:app=”http://schemas.android.com/apk/res-auto” to your root layout. This issue should be fixed in next release of android design library.
You can also use: getActivity().findViewById(android.R.id.content) like this: Snackbar snackBar = Snackbar.make(getActivity().findViewById(android.R.id.content), “Look at me, I’m a fancy snackbar”, Snackbar.LENGTH_LONG); snackBar.show(); See this
Based on the implementation of Snackbar and SnackbarManager, I can confirm Eugene H’s assessment: it’s a bug. From SnackbarManager: private void scheduleTimeoutLocked(SnackbarRecord r) { mHandler.removeCallbacksAndMessages(r); mHandler.sendMessageDelayed(Message.obtain(mHandler, MSG_TIMEOUT, r), r.duration == Snackbar.LENGTH_LONG ? LONG_DURATION_MS : SHORT_DURATION_MS); } So, any value that is not LENGTH_LONG results in a short-duration snackbar. I have filed an issue about it. … Read more
I use a simplified version of Learn OpenGL ES’s solution — which improves on Noa’s solution. It works fine for my simple quick-return toolbar above a TabLayout with footer buttons in each tab’s ViewPager content. Just set the FixScrollingFooterBehavior as the layout_behavior on the View/ViewGroup you want to keep aligned at the bottom of the … Read more
What can I do in order to make the scrolling stop when there is no more content to show at the bottom? Firstly, as I have commented below, the scrolling you said in your question is not of the NestedScrollView. It belongs to the CollapsingToolbarLayout. The NestedScrollView‘s scroll event only happens when CollapsingToolbarLayout fully collapsed, … Read more