Hi, I'm using your library in this way:
-a main activity with viewpager;
-each fragment contains an header and a recyclerview, animated through your library;

It works perfectly unless I go from a fragment to another activity, when I go back all the scroll is messed up, the header is gone somewhere and there's a lot of "empty" space.

I can provide more details or code if you need, but basically I only do:

    StikkyHeaderBuilder.stickTo(mRecyclerView)
            .setHeader(R.id.header, (ViewGroup) getView())
            .animator(new ParallaxStikkyAnimator())
            .build();

and the animator is:

private class ParallaxStikkyAnimator extends HeaderStikkyAnimator {
    @Override
    public AnimatorBuilder getAnimatorBuilder() {
        View mHeader_image = getHeader().findViewById(R.id.header_image);
        return AnimatorBuilder.create().applyVerticalParallax(mHeader_image);
    }
}

Is there some specific command to "restore" the recyclerview to a "good" status?

i have fragment it has a header and recyclerview if i did scroll down and clicked on item the application change the fragment but when click back and return to first fragment it shows the header full size but the recyclerview scrolled to the last position before change the fragment. and when i scroll it weird behaviors happened

Thoughts how to dynamically attaching multible RecyclerView to the StikkyHeader?

Hi I am using this library for one of my use.

I tried to modify your parallax sample code. I dont want the parallax effect on the image so i put that into back. I am able to achivie what i want in UI perspective. Thanks for that. But I want to add few buttons on the header and which should be clickable. Could you please let me know how to achieve this?

Following is the xml.

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/layout_container"
    android:layout_width="match_parent"
    android:layout_height="match_parent">


    <RelativeLayout
        android:id="@+id/bg"
        android:layout_width="match_parent"
        android:layout_height="@dimen/max_height_header">

        <ImageView
            android:id="@+id/header_image"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scaleType="fitXY"
            android:src="@drawable/image1" />



        <Button
            android:layout_width="50dp"
            android:layout_height="50dp"
            android:text="test"
            android:id="@+id/button"
            android:background="#ffffff" />

    </RelativeLayout>


        <RelativeLayout
            android:id="@+id/header"
            android:clickable="true"

            android:layout_width="match_parent"
            android:layout_height="@dimen/max_height_header">



            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="220dp"
                android:id="@+id/textview"
                android:text="Hello World!"
                android:textColor="@android:color/white"
                android:textSize="30sp" />

        </RelativeLayout>




    <ListView
        android:id="@+id/listview"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />



</FrameLayout>

Below is the code in java file.

 StikkyHeaderBuilder.stickTo(mListView)
                .setHeader(R.id.header, (ViewGroup) getView())
                .minHeightHeaderDim(R.dimen.max_height_header)
                .allowTouchBehindHeader(true)

                //.animator(new ParallaxStikkyAnimator())
                .build();

        button.setOnTouchListener(this);

 @Override
    public void onClick(View v) {
        if (v.getId() == R.id.button)
            Log.e("" , "Button clicked");
    }

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        Log.e("" , "view touched");
        return false;
    }

Hi Carlonzo!
I would to see something like the new app from Google, the Google IO 2015. The header has a fixed size, but the cool thing is the shadow appearing below the header with the scroll translation, like a fade. Take a look after, because I can't give an elevation to header :( If there is an tip, tell me!

I tried it on 2.3 onward with backward compalible library , nine old andorid and ViewCompact , the RecyelerView Translation is not working

there are no callbacks for the on scroll

Hello,
Thanx for your fabulous library.

I am using it in one of my projects. Is there any way to get notified when header animation get completed.

I mean we pass minimum height to header and scrolling gets stopped on reaching that height so is there any kinda method is there through which we could get that animation completed because I want that.

after sticking the recyclerview to the StickyHeaderBuilder I don't get any response from the ScrollListener.

Hello,

Can you add a Release version in the maven central, please ?
It's a little bit difficult for some project to include your project in snapshot version.

Thanks.
Regards.

When we update , add ,delete an item from Adapter , or Attach a new Adapter to RecyclerView when in Sticky mode , lots of White Space appear between sticky header and Recycler View

it is just because of Translation Y

((MainActivity) getActivity()).loadFragment(fragment, true);
this line shows error :/

when user change orientation cant find the way to change the maxHeightHeaderDim in order to not loose the listview off the screen.

Could you please add this to Maven Central?
This would make it easier to include to our projects.

in this way we allow to apply an animation from outside to a view

Hi,
I've correctly added the header to a recycler view and everything works fine - also with animation.
But, after I go to another activity, make an action that modifies the number of items on the recycler adapter (add one item at a specific position) and go back, the content is reloaded, showing the new item, but it appears a blank area at top.

Is there something I have to do?
I've tried to scroll to the top (even if it's not what I want), but it's still broken.

onResume I just reload the content, than set the new content on the adapter and call notifyDataSetChanged().

Any help will be appreciated.

My header is doubling the size. But one is my image header and other is a blank image. How can I solve that?

code XML:

   <FrameLayout
        android:id="@+id/header"
        android:layout_width="match_parent"
        android:layout_height="180dp"
        >

        <ImageView
            android:id="@+id/header_image"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scaleType="centerCrop"
            android:src="@drawable/alimentacao" />
    </FrameLayout>

code Android:

    StikkyHeaderBuilder.stickTo(list)
                .setHeader(R.id.header, parent)
                .minHeightHeaderRes(R.dimen.min_height_header)
                .animator(new ParallaxStikkyAnimator())
                .build();

Thank you for your work. It is posible to add parallax efect to library?

Is there a nuget package for this library so that it can be consumed by Xamarin.Android code. Currently it looks like it can be consumed by only java code.

Hi, thanks for your library...
I'm having problems when the header (set at .setHeader(R.id.header, containerLayout) height change dynamically at runtime.
For instance, if I place a description label on header view and its height can vary, the .minHeightHeader(100) works ok for the first time when the description label is set to a determinate number of lines, but if this label change its height (selecting another product ....) then the minHeightHeader is lower or higher the the original one depending on if the new description has fewer o more lines than the original one respectively, and as result the sticky header is not showing completely or there is an extra space at top of header respectively.

I've tried to adjust the header (set at .setHeader(R.id.header, containerLayout) height dinamically according to the label height, but without success, the same behaviour.

Is there any way to solve it? Thanks.

myheader is a linearlayout,and it add a new view after i stickTo listview, then the header's height shoud be changed, but it does't.

Hi,

My layout is as follow :

LAYOUT
|_ HEADER
|_ PAGER
   |_ MapView
   |_ RecyclerView
|_ Floating action button

When pushing the FAB, I want to animate the header to min height (if necessary) and show the map view. When pushing the FAB again, I would like to show the recycler view again (and leave the header minimized)

Any way to do that?

animateOnScroll (AnimatorBuilder.java)

case FADE:
animatorBundle.mView.setAlpha(boundedRatioTranslationY);

should get the final value from animatorBundle.mValues[0] and calculated the one to apply

I would like to remove item decoration created by StikkyHeader so I need to access it by reference.

EDIT: I created a pull request for that #54

I'm trying to implement this in an Activity, but I can't achieve it...

What do I have to put in "containerLayout"?
StikkyHeaderBuilder.stickTo(mListView)
.setHeader(R.id.header, containerLayout)
.minHeightHeader(250)
.build();

Thanks in advance

Does anyone know how to fix the following error:
Error:Module version com.github.carlonzo.stikkyheader:core:0.0.2-SNAPSHOT depends on libraries but is not a library itself

Thanks in advance,
Dorin

https://github.com/carlonzo/StikkyHeader/blob/develop/core/src/main/java/it/carlom/stikkyheader/core/HeaderAnimator.java#L11

I'm not sure if this is reported or not, but I'm noticing some black space between the bottom of the header and the top of the ScrollView when you fling. The device I'm on is The Note 5 and I'm compiling from Gradle like such compile 'com.github.carlonzo.stikkyheader:core:0.+'

The code I'm seeing this with is the example code for SimpleScrollViewFragment.java and fragment_simplescrollview.xml, unmodified.

Is this a known issue and are there any workarounds? There doesn't seem to be a HeaderStikkyAnimator with this code, so I'm guessing it's in the way we measure the bottom of the header or the top of the ScrollView perhaps?

Hi there, congrats for the library, it's really easy to use and works great.
I'm having a small issue: whenever I do a scrollToPosition on my recyclerview the sticky header don't refresh itself. In other words if I'm at the beginning of the recyclerview and execute a scrollToPosition to the last position of the recyclerview the whole header remains in screen, event the part that is not supposed to be sticky. I can attach some images if that is not clear enough. Can someone help me? Thanks in advance.

How do I add listview with emptyview?

When the header's height is larger than the viewport it can not be scrolled. Scrolling requires a touch to be made below the header, is there a way to get around this?

I ran your example and found that, when I click on tab "Simple stickky header" then I press back to home screen, the memory usage increase (Seen on Android Studio IDE -> Monitor -> Memory Allocated). Then -> click the same tab -> back to home .... memory increase continuously. How to release this memory? Thank you very much!