I just download your project and change the text view to a image view. after that i added a some piece of code to a change the image of the image view when swapping the screen. it is working. also i added a on click listener on image view to do some processes. but on click listener doesn't working. i added that listener where you change the color of the text view (now where i change the image view resource). so is it possible to add a on click listener?

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.

I need to change the White background in the Transformations

The lack of setting translationX to 0 when paging is enabled can cause some transformers to break such as going from ForegroundToBackgroundTransformer to CubeInTransformer can cause the first transformer to offset the view incorrectly by some amount.

The ActionBar is not retaining the selected transform on rotation.

Cry ..crash

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

So I basically I have two fragments in my viewpager and I wanted the horizontal or vertical flip transformation. For some strange reason when I used either of these transformations, it will change fragments correctly but the touch event will be occurring on the previous fragment. I have a scrollview in the second fragment and it doesn't scroll but I see toasts coming from events in the first fragment.

Other transformations don't seem to cause this issue.

Thanks.

When swiping left to right the previously selected page will remain stuck on the screen though often hidden by the page in front.

The fragments are not completely exiting the view when swiping right to left leaving a nasty transition.

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)

The Android guide has a DepthPage animation. Should be simple to add.

http://developer.android.com/training/animation/screen-slide.html#depth-page

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.

Hi could you add page curl effect ???

I just started thinking that I used the problem, and then download the Sample write their own Adapter, found that the click event is still a problem

  @Override
        public Object instantiateItem(ViewGroup container, final int position) {
            ImageView img = new ImageView(container.getContext());
            img.setBackgroundResource(image[position]);
            img.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Log.i("TRANSFORMS", "onClickListener");
                }
            });
            container.addView(img);
            return img;
        }

OnClicklistener has been unable to respond to Log, through the code found ABaseTransformer onPreTransform

        if (hideOffscreenPages()) {
            page.setAlpha(position <= -1f || position >= 1f ? 0f : 1f);
            page.setEnabled(false);
        } else {
            page.setEnabled(true);
            page.setAlpha(1f);
        }

hideOffscreenPages always returns true ，Then setEnabled (false)

Is it a problem with my use? thanks

Fucking gradle

Such a great piece of transformations of the viewpager but i have the vertical viewpager and i have to use depth transformation in the vertical manner.How can i do that?

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.

Add a stack animation to the list.

Can you implement 3d book curl animation like ios PageView?
I have found the project like https://github.com/briangriffey/book-animation
and https://github.com/harism/android_page_curl
But I don't know how to implement it in ViewPagerTransforms.

issue in use it with videoview for display video

when use cubeout transform and display video ,when rotate page it last position video also display in next screen with latest pos video - based on 22f(like if i give 12f it take less portion of screen compare of 22f). because position is used in it
view.setRotationY(22f*position );

When scrolling the view pager, fragments are randomly not visible. As I have never seen this happen before I am certain it must be the transformers misbehaving and the use of setVisibility is quite possibly the culprit.

It appears that sources are failing to configure properly which is annoying.

• Default Transform
• Cube In
• Cube Out
• Zoom In (Broken by fixing paging)
• Zoom Out (Broken by fixing paging)
• Rotate Down

The build scripts and dependencies are out of date. Also Travis is underutilized for determining build target and version.

how to implement FadeIn/FadeOut tansformation

A parallax style background to foreground and foreground to background animation using zoom for the transition would be neat.

Hi, Thank you for nice view pager transforms animation.

I want to try DrawerTransformer but it seems not available when I use this library "com.ToxicBakery.viewpager.transforms:view-pager-transforms:1.2.32@aar"
How to check the latest version of this library ? Thank you

In lollipop devices I faced many issues..But I want to fix this major issue first.

Issue

• When first time tab layout loading -> scrollview works. no issue.
• But after I swipe from first tab to next. All the tab layouts scrollview not working..

Note: In kitkat it working correctly. This issue happen only in lollipop devices.

not a big deal, but should be done since this library is super!

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

The Android guide has a zoom out animation combined with sliding. Should be simple to add.

http://developer.android.com/training/animation/screen-slide.html#zoom-out

Build tools and gradle are out of date and need to be updated

like ForegroundToBackgroundTransformer and BackgroundToForegroundTransformer animation in one transform

prev and next screen come from background to foreground
thanks in advance

The root folder license needs to be corrected.

Hi, I need a transformer mode that's allow the "slide" from page 1 to page 3... from page 2 to page 10...
Anyone can help?

The ViewPager does not retain position on rotation in the example

The example is buggy and complicated. Instead of the ListView, which is hard to keep in sync on each page, use an ActionBar spinner and swap out the fragments for colored TextViews identifying the position.

I override PagerAdapter.getPageWidth:

@Override
public float getPageWidth(int position) {
    return 0.5f;
}

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 ?!

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..

Could you support android api 7+?

Can be reproduced in View Pager with 3 Fragments by repeatedly scrolling between first and last page.

mediaPager.setPageTransformer(true, new CubeOutTransformer());

Crash Log

03-01 20:30:07.621 671-671/? E/Parcel: Reading a NULL string not supported here.
03-01 20:30:08.945 23393-23538/com.hiteshsahu.soundrecorder A/OpenGLRenderer: Error: Spot pair overflow!!! used 42, total 28
03-01 20:30:08.945 23393-23539/com.hiteshsahu.soundrecorder A/OpenGLRenderer: Error: Spot pair overflow!!! used 38, total 25
                                                                              
                                                                              --------- beginning of crash
03-01 20:30:08.945 23393-23539/com.hiteshsahu.soundrecorder A/libc: Fatal signal 6 (SIGABRT) in tid 23539 (hwuiTask2)
03-01 20:30:08.945 23393-23538/com.hiteshsahu.soundrecorder A/libc: Fatal signal 6 (SIGABRT), code -6 in tid 23538 (hwuiTask1)
03-01 20:30:08.998 548-548/? A/DEBUG: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
03-01 20:30:08.998 548-548/? A/DEBUG: Build fingerprint: 'Letv/Le2_WW/le_s2_ww:6.0.1/IIXOSOP5801910121S/44:user/release-keys'
03-01 20:30:08.998 548-548/? A/DEBUG: Revision: '0'
03-01 20:30:08.998 548-548/? A/DEBUG: ABI: 'arm64'
03-01 20:30:08.998 548-548/? A/DEBUG: pid: 23393, tid: 23539, name: hwuiTask2  >>> com.hiteshsahu.soundrecorder <<<
03-01 20:30:08.998 548-548/? A/DEBUG: signal 6 (SIGABRT), code 0 (SI_USER), fault addr --------
03-01 20:30:09.019 548-548/? A/DEBUG: Abort message: 'Error: Spot pair overflow!!! used 38, total 25'
03-01 20:30:09.019 548-548/? A/DEBUG:     x0   0000000000000000  x1   0000000000005bf3  x2   0000000000000006  x3   0000000000000000
03-01 20:30:09.019 548-548/? A/DEBUG:     x4   0000000000000002  x5   0000000000000081  x6   0000000000000081  x7   0000000000000000
03-01 20:30:09.019 548-548/? A/DEBUG:     x8   0000000000000083  x9   0000007fae517012  x10  0000000000000000  x11  0000007fae516000
03-01 20:30:09.019 548-548/? A/DEBUG:     x12  0000007fae501090  x13  0000000000000001  x14  0000007f926b0128  x15  0000000000000000
03-01 20:30:09.019 548-548/? A/DEBUG:     x16  0000007fb29df6a8  x17  0000007fb29a1b2c  x18  0000007fae516000  x19  0000007f926b1510
03-01 20:30:09.019 548-548/? A/DEBUG:     x20  0000007f926b1450  x21  0000000000000000  x22  0000000000000006  x23  0000000000000026
03-01 20:30:09.019 548-548/? A/DEBUG:     x24  000000000000000c  x25  0000000000000026  x26  000000559eef1990  x27  0000007f926b0790
03-01 20:30:09.019 548-548/? A/DEBUG:     x28  0000000000000026  x29  0000007f926affe0  x30  0000007fb299f2c8
03-01 20:30:09.019 548-548/? A/DEBUG:     sp   0000007f926affe0  pc   0000007fb29a1b34  pstate 0000000000000000
03-01 20:30:09.024 548-548/? A/DEBUG: backtrace:
03-01 20:30:09.024 548-548/? A/DEBUG:     #00 pc 000000000006bb34  /system/lib64/libc.so (tgkill+8)
03-01 20:30:09.024 548-548/? A/DEBUG:     #01 pc 00000000000692c4  /system/lib64/libc.so (pthread_kill+68)
03-01 20:30:09.024 548-548/? A/DEBUG:     #02 pc 00000000000212b8  /system/lib64/libc.so (raise+28)
03-01 20:30:09.024 548-548/? A/DEBUG:     #03 pc 000000000001ba58  /system/lib64/libc.so (abort+60)
03-01 20:30:09.024 548-548/? A/DEBUG:     #04 pc 000000000000d1b0  /system/lib64/libcutils.so (__android_log_assert+236)
03-01 20:30:09.024 548-548/? A/DEBUG:     #05 pc 000000000006ebc8  /system/lib64/libhwui.so
03-01 20:30:09.024 548-548/? A/DEBUG:     #06 pc 0000000000074770  /system/lib64/libhwui.so
03-01 20:30:09.024 548-548/? A/DEBUG:     #07 pc 0000000000075b5c  /system/lib64/libhwui.so
03-01 20:30:09.024 548-548/? A/DEBUG:     #08 pc 000000000006e8dc  /system/lib64/libhwui.so
03-01 20:30:09.024 548-548/? A/DEBUG:     #09 pc 00000000000773a0  /system/lib64/libhwui.so
03-01 20:30:09.024 548-548/? A/DEBUG:     #10 pc 000000000002c24c  /system/lib64/libhwui.so
03-01 20:30:09.024 548-548/? A/DEBUG:     #11 pc 00000000000167b4  /system/lib64/libutils.so (_ZN7android6Thread11_threadLoopEPv+208)
03-01 20:30:09.024 548-548/? A/DEBUG:     #12 pc 00000000000903cc  /system/lib64/libandroid_runtime.so (_ZN7android14AndroidRuntime15javaThreadShellEPv+96)
03-01 20:30:09.024 548-548/? A/DEBUG:     #13 pc 0000000000016004  /system/lib64/libutils.so
03-01 20:30:09.024 548-548/? A/DEBUG:     #14 pc 0000000000068714  /system/lib64/libc.so (_ZL15__pthread_startPv+52)
03-01 20:30:09.024 548-548/? A/DEBUG:     #15 pc 000000000001c604  /system/lib64/libc.so (__start_thread+16)
03-01 20:30:09.238 548-548/? A/DEBUG: Tombstone written to: /data/tombstones/tombstone_00
03-01 20:30:09.238 548-548/? E/DEBUG: AM write failed: Broken pipe
03-01 20:30:09.342 1430-1477/? E/JavaBinder: !!! FAILED BINDER TRANSACTION !!!  (parcel size = 60)
03-01 20:30:09.943 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XTWiFi-PE] unknown deliver target [OS-Agent]
03-01 20:30:11.174 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XT-CS] unknown deliver target [OS-Agent]
03-01 20:30:11.316 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XT-CS] unknown deliver target [OS-Agent]
03-01 20:30:14.943 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XTWiFi-PE] unknown deliver target [OS-Agent]
03-01 20:30:16.174 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XT-CS] unknown deliver target [OS-Agent]
03-01 20:30:16.317 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XT-CS] unknown deliver target [OS-Agent]
03-01 20:30:19.943 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XTWiFi-PE] unknown deliver target [OS-Agent]
03-01 20:30:21.174 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XT-CS] unknown deliver target [OS-Agent]
03-01 20:30:21.317 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XT-CS] unknown deliver target [OS-Agent]
03-01 20:30:24.944 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XTWiFi-PE] unknown deliver target [OS-Agent]
03-01 20:30:26.175 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XT-CS] unknown deliver target [OS-Agent]
03-01 20:30:26.317 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XT-CS] unknown deliver target [OS-Agent]
03-01 20:30:29.945 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XTWiFi-PE] unknown deliver target [OS-Agent]
03-01 20:30:31.175 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XT-CS] unknown deliver target [OS-Agent]
03-01 20:30:31.318 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XT-CS] unknown deliver target [OS-Agent]
03-01 20:30:34.945 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XTWiFi-PE] unknown deliver target [OS-Agent]
03-01 20:30:36.175 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XT-CS] unknown deliver target [OS-Agent]
03-01 20:30:36.318 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XT-CS] unknown deliver target [OS-Agent]
03-01 20:30:39.946 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XTWiFi-PE] unknown deliver target [OS-Agent]
03-01 20:30:41.175 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XT-CS] unknown deliver target [OS-Agent]
03-01 20:30:41.318 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XT-CS] unknown deliver target [OS-Agent]
03-01 20:30:42.899 671-671/? E/Parcel: Reading a NULL string not supported here.
03-01 20:30:42.899 671-671/? E/Parcel: Reading a NULL string not supported here.
03-01 20:30:44.946 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XTWiFi-PE] unknown deliver target [OS-Agent]
03-01 20:30:46.079 671-671/? E/Parcel: Reading a NULL string not supported here.
03-01 20:30:46.079 671-671/? E/Parcel: Reading a NULL string not supported here.
03-01 20:30:46.175 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XT-CS] unknown deliver target [OS-Agent]
03-01 20:30:46.319 579-597/? E/QCALOG: [MessageQ] ProcessNewMessage: [XT-CS] unknown deliver target [OS-Agent]

Also found this issue in Android Studio static code analysis

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

Can you please provide animation with a page curl effect for view pager??