I had problem with RecyclerView in ViewPager with DepthPageTransformer, it wouldn't scroll, only on last page. Not sure what is the problem, just wanted you to know, I'll just use another one.

I have implemented the cube out transformer it works fine in all my devices however, on android 7.0 its not working properly. The setRotationY seems to have an issue.

How can I solve this?

Hey,nice job ViewPagerTransforms.Am using the DepthPageTransform on my ViewPager and getting issues.On each of my ViewPager pages there is a button,this button is no clickable after applying the above Transform...Removing the Transform fixes the issue...What do I do? Thanks

In this demo sliding is horizontal, Is there any way to slide view up n down instead of left right ? Animation also be vertical eg. Vertical stack transformation when I slide up n down..plz help..

int zoom out transformer when the previous slider zoom out, it still on the above layer of current slide ( just transparent ). When you want to catch the click event, the previous slider will get it instead of current.

So, we have to do another thing to make it disappear. move it to the left.

(I 'm not sure if i describe it clear. you can try to add click event to each slider , and to see it ) :-D

I am using FragmentStatePagerAdapter, ViewPager, v4.Fragments and the CubeOutTransformer. When I use the following code: CubeOutTransformer ct = new CubeOutTransformer(); mViewPager.setPageTransformer(true,ct);

and add more than 4 pages the Button and gesture controls on the 5 page don't work. When I comment out the above code, the 5th page's controls work fine. Am I missing something... possible max setting??? Thanks

Using FlipHorizontalTransformer with viewPager.

The next fragment can't handle touch event after switch page, because the last fragment is above the next fragment!

Fatal Exception: java.lang.IllegalArgumentException: Cannot set 'scaleX' to Float.NaN at android.view.View.sanitizeFloatPropertyValue(View.java:16995) at android.view.View.sanitizeFloatPropertyValue(View.java:16969) at android.view.View.setScaleX(View.java:16358) at com.ToxicBakery.viewpager.transforms.ScaleInOutTransformer.onTransform(ScaleInOutTransformer.kt:11) at com.ToxicBakery.viewpager.transforms.ABaseTransformer.transformPage(ABaseTransformer.kt:56) at androidx.viewpager.widget.ViewPager.onPageScrolled(ViewPager.java:1915) at androidx.viewpager.widget.ViewPager.pageScrolled(ViewPager.java:1842) at androidx.viewpager.widget.ViewPager.scrollToItem(ViewPager.java:694) at androidx.viewpager.widget.ViewPager.onLayout(ViewPager.java:1786) at android.view.View.layout(View.java:22415) at android.view.ViewGroup.layout(ViewGroup.java:6594) at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1083) at android.view.View.layout(View.java:22415) at android.view.ViewGroup.layout(ViewGroup.java:6594) at androidx.coordinatorlayout.widget.CoordinatorLayout.layoutChild(CoordinatorLayout.java:1193) at androidx.coordinatorlayout.widget.CoordinatorLayout.onLayoutChild(CoordinatorLayout.java:880) at androidx.coordinatorlayout.widget.CoordinatorLayout.onLayout(CoordinatorLayout.java:899) at android.view.View.layout(View.java:22415) at android.view.ViewGroup.layout(ViewGroup.java:6594) at androidx.drawerlayout.widget.DrawerLayout.onLayout(DrawerLayout.java:1231) at android.view.View.layout(View.java:22415) at android.view.ViewGroup.layout(ViewGroup.java:6594) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:22415) at android.view.ViewGroup.layout(ViewGroup.java:6594) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1812) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1656) at android.widget.LinearLayout.onLayout(LinearLayout.java:1565) at android.view.View.layout(View.java:22415) at android.view.ViewGroup.layout(ViewGroup.java:6594) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:22415) at android.view.ViewGroup.layout(ViewGroup.java:6594) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1812) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1656) at android.widget.LinearLayout.onLayout(LinearLayout.java:1565) at android.view.View.layout(View.java:22415) at android.view.ViewGroup.layout(ViewGroup.java:6594) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at com.android.internal.policy.DecorView.onLayout(DecorView.java:1067) at android.view.View.layout(View.java:22415) at android.view.ViewGroup.layout(ViewGroup.java:6594) at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:3427) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2894) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1942) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:8595) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:988) at android.view.Choreographer.doCallbacks(Choreographer.java:765) at android.view.Choreographer.doFrame(Choreographer.java:700) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:967) at android.os.Handler.handleCallback(Handler.java:873) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:214) at android.app.ActivityThread.main(ActivityThread.java:7156) at java.lang.reflect.Method.invoke(Method.java) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:975)

This issue is quite specific to our project. We use a continuous scrolling ViewPager with an infinite amount of pages.

Somehow the position retrieved in the 'transformPage' method exceed the boundaries on Android 4. This causes messed up animations where the wrong view animated which causes you to get stuck.

This fix makes sure that the position is always within it's boundaries and does not change any behaviour for working implementations.

how to get the data of fragment from view pager. I tried to set onClicklistener in fragment onCreateview like this

textViewPosition.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        Toast.makeText(getActivity(),textViewPosition.getTag().toString(),Toast.LENGTH_LONG).show();
    }
}); 

but not working,please help.... Thanks in advance

I've wanted to import your lib to my project and because it is v13 support I couldn't do it via maven. It is a shame because there is nothing preventing this from been v4 support, I've already made the changes took less than 10 minutes. you should consider doing the same upon releasing the next version.

I have used this with the viewpager2 but application is crashing after applying this transformation. error -> ( com.ToxicBakery.viewpager.transforms.CubeOutTransformer cannot be cast to androidx.viewpager2.widget.ViewPager2$PageTransformer)

Height and Width of my fragment decreased after Page Transformation. I'm using BackgroundToForegroundTransformer. After the transformation, i want to set my fragment size to original size. I don't want to decrease the height and width of my fragment. How can i do it ?

How to test bug: add next code in onCreate, run app, choose some transformation and wait for 6 seconds, it will change something but slider won't appear or animation would be frozen (paused at its start)

        // test bug
        Handler handler = new Handler();
        handler.postDelayed(new Runnable() {
            @Override
            public void run() {
                mPager.setCurrentItem(4, false);
            }
        }, 6000);

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        int selectedPage = 0;
        if (savedInstanceState != null) {
            mSelectedItem = savedInstanceState.getInt(KEY_SELECTED_CLASS);
            selectedPage = savedInstanceState.getInt(KEY_SELECTED_PAGE);
        }

        final ArrayAdapter<TransformerItem> actionBarAdapter = new ArrayAdapter<>(
                getApplicationContext(), android.R.layout.simple_list_item_1, android.R.id.text1, TRANSFORM_CLASSES);

        setContentView(R.layout.activity_main);

        mAdapter = new PageAdapter(getFragmentManager());

        mPager = (ViewPager) findViewById(R.id.container);
        mPager.setAdapter(mAdapter);
        mPager.setCurrentItem(selectedPage);

        // test bug
        Handler handler = new Handler();
        handler.postDelayed(new Runnable() {
            @Override
            public void run() {
                mPager.setCurrentItem(4, false);
            }
        }, 6000);

        final ActionBar actionBar = getActionBar();
        if (actionBar != null) {
            actionBar.setListNavigationCallbacks(actionBarAdapter, this);
            actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);

            //noinspection ResourceType
            actionBar.setDisplayOptions(actionBar.getDisplayOptions() ^ ActionBar.DISPLAY_SHOW_TITLE);

            actionBar.setSelectedNavigationItem(mSelectedItem);
        }

    }

for example with ZoomOutSliderTransformer slider won't be fully 100% taking all space of layout (you can see white paddings or margin at right and bottom)

Hi, I am using your library, trying to implement FlipHorizontalTransformer

Inside my view pagers I have fragments with buttons, and their onClickLIsteners...but every time I use your library, these listeners start to overlap:

I have 2 pages: On page on i have Button1 and on page 2 i have Button2 (on same sort of relative location)

But when I am on page2 and click to Button2 -> Button1 onClick lister fires up!!!

Its like this page never left screen...its still on top (but hidden)...can you explain how to fix this ?!

Don't have time to do a proper change, test, and pull request so I'm just going to write this issue. If no one fixes, I'll come back to make the change and pull request after my app release.

Problem: those modifications have the side effect that if I change transformations after a vertical or horizontal flip, when I swipe the other direction, the off screen view, which is now on screen, remains hidden.

I believe the framework already (sort of) supported the necessary change to remedy this. For anyone that runs into the problem, make the following change to ABaseTransformer: if (hideOffscreenPages() && (position <= -1f || position >= 1f)) { page.setVisibility(View.INVISIBLE); page.setAlpha(0f); // page.setEnabled(false); } else { // page.setEnabled(true); page.setAlpha(1f); page.setVisibility(View.VISIBLE); } And then you can remove the onPostTransform from FlipHorizontal and FlipVertical.

In doing other work I did a limited amount of research on alpha vs visibility. I found a post from Romain Guy saying to use visibility and not alpha to hide/show as it's more efficient. The original defects were due to the framework using alpha to hide. The partial fixes switched to using visibility to prevent interaction with "off screen" pages, as it should be IMO. Problem is the side effect I found. Moving this into the framework itself fixes both these transformations and future transformations.

I left the alpha change in as it's necessary to clean up after some transformations. I don't think the setEnabled is necessary and it's commented out in my copy.

To the original developer that fixed the Flip transformation, thank you! I'd been having a problem being unable to scroll after a transformation and not taking the time to debug. Your fix helped very much.