List of usage examples for android.view View setTranslationY
public void setTranslationY(float translationY)
From source file:ccv.checkhelzio.nuevaagendacucsh.transitions.FabTransition.java
@Override public Animator createAnimator(final ViewGroup sceneRoot, final TransitionValues startValues, final TransitionValues endValues) { if (startValues == null || endValues == null) return null; final Rect startBounds = (Rect) startValues.values.get(PROP_BOUNDS); final Rect endBounds = (Rect) endValues.values.get(PROP_BOUNDS); final boolean fromFab = endBounds.width() > startBounds.width(); final View view = endValues.view; final Rect dialogBounds = fromFab ? endBounds : startBounds; final Rect fabBounds = fromFab ? startBounds : endBounds; final Interpolator fastOutSlowInInterpolator = AnimUtils .getFastOutSlowInInterpolator(sceneRoot.getContext()); final long duration = getDuration(); final long halfDuration = duration / 2; final long twoThirdsDuration = duration * 2 / 3; if (!fromFab) { // Force measure / layout the dialog back to it's original bounds view.measure(makeMeasureSpec(startBounds.width(), View.MeasureSpec.EXACTLY), makeMeasureSpec(startBounds.height(), View.MeasureSpec.EXACTLY)); view.layout(startBounds.left, startBounds.top, startBounds.right, startBounds.bottom); }//from w w w . jav a 2s . com final int translationX = startBounds.centerX() - endBounds.centerX(); final int translationY = startBounds.centerY() - endBounds.centerY(); if (fromFab) { view.setTranslationX(translationX); view.setTranslationY(translationY); } // Add a color overlay to fake appearance of the FAB final ColorDrawable fabColor = new ColorDrawable(color); fabColor.setBounds(0, 0, dialogBounds.width(), dialogBounds.height()); if (!fromFab) fabColor.setAlpha(0); view.getOverlay().add(fabColor); // Add an icon overlay again to fake the appearance of the FAB final Drawable fabIcon = ContextCompat.getDrawable(sceneRoot.getContext(), icon).mutate(); final int iconLeft = (dialogBounds.width() - fabIcon.getIntrinsicWidth()) / 2; final int iconTop = (dialogBounds.height() - fabIcon.getIntrinsicHeight()) / 2; fabIcon.setBounds(iconLeft, iconTop, iconLeft + fabIcon.getIntrinsicWidth(), iconTop + fabIcon.getIntrinsicHeight()); if (!fromFab) fabIcon.setAlpha(0); view.getOverlay().add(fabIcon); // Circular clip from/to the FAB size final Animator circularReveal; if (fromFab) { circularReveal = ViewAnimationUtils.createCircularReveal(view, view.getWidth() / 2, view.getHeight() / 2, startBounds.width() / 2, (float) Math.hypot(endBounds.width() / 2, endBounds.height() / 2)); circularReveal.setInterpolator(AnimUtils.getFastOutLinearInInterpolator(sceneRoot.getContext())); //circularReveal.setInterpolator(new AnimationUtils().loadInterpolator(sceneRoot.getContext(), android.R.interpolator.fast_out_slow_in)); } else { circularReveal = ViewAnimationUtils.createCircularReveal(view, view.getWidth() / 2, view.getHeight() / 2, (float) Math.hypot(startBounds.width() / 2, startBounds.height() / 2), endBounds.width() / 2); circularReveal.setInterpolator(AnimUtils.getLinearOutSlowInInterpolator(sceneRoot.getContext())); // Persist the end clip i.e. stay at FAB size after the reveal has run circularReveal.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { view.setOutlineProvider(new ViewOutlineProvider() { @Override public void getOutline(View view, Outline outline) { final int left = (view.getWidth() - fabBounds.width()) / 2; final int top = (view.getHeight() - fabBounds.height()) / 2; outline.setOval(left, top, left + fabBounds.width(), top + fabBounds.height()); view.setClipToOutline(true); } }); } }); } circularReveal.setDuration(duration); // Translate to end position along an arc final Animator translate = ObjectAnimator.ofFloat(view, View.TRANSLATION_X, View.TRANSLATION_Y, fromFab ? getPathMotion().getPath(translationX, translationY, 0, 0) : getPathMotion().getPath(0, 0, -translationX, -translationY)); translate.setDuration(duration); translate.setInterpolator(fastOutSlowInInterpolator); // Fade contents of non-FAB view in/out List<Animator> fadeContents = null; if (view instanceof ViewGroup) { final ViewGroup vg = ((ViewGroup) view); fadeContents = new ArrayList<>(vg.getChildCount()); for (int i = vg.getChildCount() - 1; i >= 0; i--) { final View child = vg.getChildAt(i); final Animator fade = ObjectAnimator.ofFloat(child, View.ALPHA, fromFab ? 1f : 0f); if (fromFab) { child.setAlpha(0f); } fade.setDuration(twoThirdsDuration); fade.setInterpolator(fastOutSlowInInterpolator); fadeContents.add(fade); } } // Fade in/out the fab color & icon overlays final Animator colorFade = ObjectAnimator.ofInt(fabColor, "alpha", fromFab ? 0 : 255); final Animator iconFade = ObjectAnimator.ofInt(fabIcon, "alpha", fromFab ? 0 : 255); if (!fromFab) { colorFade.setStartDelay(halfDuration); iconFade.setStartDelay(halfDuration); } colorFade.setDuration(halfDuration); iconFade.setDuration(halfDuration); colorFade.setInterpolator(fastOutSlowInInterpolator); iconFade.setInterpolator(fastOutSlowInInterpolator); // Work around issue with elevation shadows. At the end of the return transition the shared // element's shadow is drawn twice (by each activity) which is jarring. This workaround // still causes the shadow to snap, but it's better than seeing it double drawn. Animator elevation = null; if (!fromFab) { elevation = ObjectAnimator.ofFloat(view, View.TRANSLATION_Z, -view.getElevation()); elevation.setDuration(duration); elevation.setInterpolator(fastOutSlowInInterpolator); } // Run all animations together final AnimatorSet transition = new AnimatorSet(); transition.playTogether(circularReveal, translate, colorFade, iconFade); transition.playTogether(fadeContents); if (elevation != null) transition.play(elevation); if (fromFab) { transition.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { // Clean up view.getOverlay().clear(); } }); } return new AnimUtils.NoPauseAnimator(transition); }
From source file:com.n3rditorium.pocketdoggie.transitions.FabTransform.java
@Override public Animator createAnimator(final ViewGroup sceneRoot, final TransitionValues startValues, final TransitionValues endValues) { if (startValues == null || endValues == null) { return null; }/*from w w w. ja v a2 s. c o m*/ final Rect startBounds = (Rect) startValues.values.get(PROP_BOUNDS); final Rect endBounds = (Rect) endValues.values.get(PROP_BOUNDS); final boolean fromFab = endBounds.width() > startBounds.width(); final View view = endValues.view; final Rect dialogBounds = fromFab ? endBounds : startBounds; final Rect fabBounds = fromFab ? startBounds : endBounds; final Interpolator fastOutSlowInInterpolator = AnimUtils .getFastOutSlowInInterpolator(sceneRoot.getContext()); final long duration = getDuration(); final long halfDuration = duration / 2; final long twoThirdsDuration = duration * 2 / 3; if (!fromFab) { // Force measure / layout the dialog back to it's original bounds view.measure(makeMeasureSpec(startBounds.width(), View.MeasureSpec.EXACTLY), makeMeasureSpec(startBounds.height(), View.MeasureSpec.EXACTLY)); view.layout(startBounds.left, startBounds.top, startBounds.right, startBounds.bottom); } final int translationX = startBounds.centerX() - endBounds.centerX(); final int translationY = startBounds.centerY() - endBounds.centerY(); if (fromFab) { view.setTranslationX(translationX); view.setTranslationY(translationY); } // Add a color overlay to fake appearance of the FAB final ColorDrawable fabColor = new ColorDrawable(color); fabColor.setBounds(0, 0, dialogBounds.width(), dialogBounds.height()); if (!fromFab) { fabColor.setAlpha(0); } view.getOverlay().add(fabColor); // Add an icon overlay again to fake the appearance of the FAB final Drawable fabIcon = ContextCompat.getDrawable(sceneRoot.getContext(), icon).mutate(); final int iconLeft = (dialogBounds.width() - fabIcon.getIntrinsicWidth()) / 2; final int iconTop = (dialogBounds.height() - fabIcon.getIntrinsicHeight()) / 2; fabIcon.setBounds(iconLeft, iconTop, iconLeft + fabIcon.getIntrinsicWidth(), iconTop + fabIcon.getIntrinsicHeight()); if (!fromFab) { fabIcon.setAlpha(0); } view.getOverlay().add(fabIcon); // Circular clip from/to the FAB size final Animator circularReveal; if (fromFab) { circularReveal = ViewAnimationUtils.createCircularReveal(view, view.getWidth() / 2, view.getHeight() / 2, startBounds.width() / 2, (float) Math.hypot(endBounds.width() / 2, endBounds.width() / 2)); circularReveal.setInterpolator(AnimUtils.getFastOutLinearInInterpolator(sceneRoot.getContext())); } else { circularReveal = ViewAnimationUtils.createCircularReveal(view, view.getWidth() / 2, view.getHeight() / 2, (float) Math.hypot(startBounds.width() / 2, startBounds.width() / 2), endBounds.width() / 2); circularReveal.setInterpolator(AnimUtils.getLinearOutSlowInInterpolator(sceneRoot.getContext())); // Persist the end clip i.e. stay at FAB size after the reveal has run circularReveal.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { view.setOutlineProvider(new ViewOutlineProvider() { @Override public void getOutline(View view, Outline outline) { final int left = (view.getWidth() - fabBounds.width()) / 2; final int top = (view.getHeight() - fabBounds.height()) / 2; outline.setOval(left, top, left + fabBounds.width(), top + fabBounds.height()); view.setClipToOutline(true); } }); } }); } circularReveal.setDuration(duration); // Translate to end position along an arc final Animator translate = ObjectAnimator.ofFloat(view, View.TRANSLATION_X, View.TRANSLATION_Y, fromFab ? getPathMotion().getPath(translationX, translationY, 0, 0) : getPathMotion().getPath(0, 0, -translationX, -translationY)); translate.setDuration(duration); translate.setInterpolator(fastOutSlowInInterpolator); // Fade contents of non-FAB view in/out List<Animator> fadeContents = null; if (view instanceof ViewGroup) { final ViewGroup vg = ((ViewGroup) view); fadeContents = new ArrayList<>(vg.getChildCount()); for (int i = vg.getChildCount() - 1; i >= 0; i--) { final View child = vg.getChildAt(i); final Animator fade = ObjectAnimator.ofFloat(child, View.ALPHA, fromFab ? 1f : 0f); if (fromFab) { child.setAlpha(0f); } fade.setDuration(twoThirdsDuration); fade.setInterpolator(fastOutSlowInInterpolator); fadeContents.add(fade); } } // Fade in/out the fab color & icon overlays final Animator colorFade = ObjectAnimator.ofInt(fabColor, "alpha", fromFab ? 0 : 255); final Animator iconFade = ObjectAnimator.ofInt(fabIcon, "alpha", fromFab ? 0 : 255); if (!fromFab) { colorFade.setStartDelay(halfDuration); iconFade.setStartDelay(halfDuration); } colorFade.setDuration(halfDuration); iconFade.setDuration(halfDuration); colorFade.setInterpolator(fastOutSlowInInterpolator); iconFade.setInterpolator(fastOutSlowInInterpolator); // Work around issue with elevation shadows. At the end of the return transition the shared // element's shadow is drawn twice (by each activity) which is jarring. This workaround // still causes the shadow to snap, but it's better than seeing it double drawn. Animator elevation = null; if (!fromFab) { elevation = ObjectAnimator.ofFloat(view, View.TRANSLATION_Z, -view.getElevation()); elevation.setDuration(duration); elevation.setInterpolator(fastOutSlowInInterpolator); } // Run all animations together final AnimatorSet transition = new AnimatorSet(); transition.playTogether(circularReveal, translate, colorFade, iconFade); transition.playTogether(fadeContents); if (elevation != null) { transition.play(elevation); } if (fromFab) { transition.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { // Clean up view.getOverlay().clear(); } }); } return new AnimUtils.NoPauseAnimator(transition); }
From source file:com.android.incallui.CallCardFragment.java
private void assignTranslateAnimation(View view, int offset) { view.setLayerType(View.LAYER_TYPE_HARDWARE, null); view.buildLayer();/* ww w .j a v a2 s .com*/ view.setTranslationY(mTranslationOffset * offset); view.animate().translationY(0).alpha(1).withLayer().setDuration(mShrinkAnimationDuration) .setInterpolator(AnimUtils.EASE_IN); }
From source file:android.improving.utils.views.cardsview.StackPageTransformer.java
@Override public void transformPage(View view, float position) { int dimen = 0; switch (mOrientation) { case VERTICAL: dimen = view.getHeight();//from ww w . ja va2s . c om break; case HORIZONTAL: dimen = view.getWidth(); break; } if (!mInitialValuesCalculated) { mInitialValuesCalculated = true; calculateInitialValues(dimen); } switch (mOrientation) { case VERTICAL: view.setRotationX(0); view.setPivotY(dimen / 2f); view.setPivotX(view.getWidth() / 2f); break; case HORIZONTAL: view.setRotationY(0); view.setPivotX(dimen / 2f); view.setPivotY(view.getHeight() / 2f); break; } if (position < -mNumberOfStacked - 1) { view.setAlpha(0f); } else if (position <= 0) { float scale = mZeroPositionScale + (position * mStackedScaleFactor); float baseTranslation = (-position * dimen); float shiftTranslation = calculateShiftForScale(position, scale, dimen); view.setScaleX(scale); view.setScaleY(scale); view.setAlpha(1.0f + (position * mAlphaFactor)); switch (mOrientation) { case VERTICAL: view.setTranslationY(baseTranslation + shiftTranslation); break; case HORIZONTAL: view.setTranslationX(baseTranslation + shiftTranslation); break; } } else if (position <= 1) { float scale = mZeroPositionScale + (position * mStackedScaleFactor); view.setScaleX(scale); view.setScaleY(scale); view.setAlpha(1.0f + (position * mAlphaFactor)); view.setTranslationY(position); } else if (position > 1) { view.setAlpha(0f); } }
From source file:arun.com.chromer.browsing.article.view.ElasticDragDismissFrameLayout.java
private void dragScale(int scroll) { if (scroll == 0) return;/* w w w . j a v a 2 s . c om*/ totalDrag += scroll; View child = getChildAt(0); // track the direction & set the pivot point for scaling // don't double track i.e. if play dragging down and then reverse, keep tracking as // dragging down until they reach the 'natural' position if (scroll < 0 && !draggingUp && !draggingDown) { draggingDown = true; if (shouldScale) child.setPivotY(getHeight()); } else if (scroll > 0 && !draggingDown && !draggingUp) { draggingUp = true; if (shouldScale) child.setPivotY(0f); } // how far have we dragged relative to the distance to perform a dismiss // (01 where 1 = dismiss distance). Decreasing logarithmically as we approach the limit float dragFraction = (float) Math.log10(1 + (Math.abs(totalDrag) / dragDismissDistance)); // calculate the desired translation given the drag fraction float dragTo = dragFraction * dragDismissDistance * dragElasticity; if (draggingUp) { // as we use the absolute magnitude when calculating the drag fraction, need to // re-apply the drag direction dragTo *= -1; } child.setTranslationY(dragTo); if (draggingBackground == null) { draggingBackground = new RectF(); draggingBackground.left = 0; draggingBackground.right = getWidth(); } if (shouldScale) { final float scale = 1 - ((1 - dragDismissScale) * dragFraction); child.setScaleX(scale); child.setScaleY(scale); } // if we've reversed direction and gone past the settle point then clear the flags to // allow the list to get the scroll events & reset any transforms if ((draggingDown && totalDrag >= 0) || (draggingUp && totalDrag <= 0)) { totalDrag = dragTo = dragFraction = 0; draggingDown = draggingUp = false; child.setTranslationY(0f); child.setScaleX(1f); child.setScaleY(1f); } // draw the background above or below the view where it has scrolled at if (draggingUp) { draggingBackground.bottom = getHeight(); draggingBackground.top = getHeight() + dragTo; invalidate(); } else if (draggingDown) { draggingBackground.top = 0; draggingBackground.bottom = dragTo; invalidate(); } dispatchDragCallback(dragFraction, dragTo, Math.min(1f, Math.abs(totalDrag) / dragDismissDistance), totalDrag); }
From source file:cn.edu.nuc.seeworld.view.flippablestackview.StackPageTransformer.java
@Override public void transformPage(View view, float position) { int dimen = 0; switch (mOrientation) { case VERTICAL: dimen = view.getHeight();/* w w w. j a v a2 s . c o m*/ break; case HORIZONTAL: dimen = view.getWidth(); break; } if (!mInitialValuesCalculated) { mInitialValuesCalculated = true; calculateInitialValues(dimen); } switch (mOrientation) { case VERTICAL: view.setRotationX(0); view.setPivotY(dimen / 2f); view.setPivotX(view.getWidth() / 2f); break; case HORIZONTAL: view.setRotationY(0); view.setPivotX(dimen / 2f); view.setPivotY(view.getHeight() / 2f); break; } if (position < -mNumberOfStacked - 1) { view.setAlpha(0f); } else if (position <= 0) { float scale = mZeroPositionScale + (position * mStackedScaleFactor); float baseTranslation = (-position * dimen); float shiftTranslation = calculateShiftForScale(position, scale, dimen); view.setScaleX(scale); view.setScaleY(scale); view.setAlpha(1.0f + (position * mAlphaFactor)); switch (mOrientation) { case VERTICAL: view.setTranslationY(baseTranslation + shiftTranslation); break; case HORIZONTAL: view.setTranslationX(baseTranslation + shiftTranslation); break; } } else if (position <= 1) { float baseTranslation = position * dimen; float scale = mZeroPositionScale - mValueInterpolator.map(mScaleInterpolator.getInterpolation(position)); scale = (scale < 0) ? 0f : scale; float shiftTranslation = (1.0f - position) * mOverlap; float rotation = -mRotationInterpolator.getInterpolation(position) * 90; rotation = (rotation < -90) ? -90 : rotation; float alpha = 1.0f - position; alpha = (alpha < 0) ? 0f : alpha; view.setAlpha(alpha); switch (mOrientation) { case VERTICAL: view.setPivotY(dimen); view.setRotationX(rotation); view.setScaleX(mZeroPositionScale); view.setScaleY(scale); view.setTranslationY(-baseTranslation - mBelowStackSpace - shiftTranslation); break; case HORIZONTAL: view.setPivotX(dimen); view.setRotationY(-rotation); view.setScaleY(mZeroPositionScale); view.setScaleX(scale); view.setTranslationX(-baseTranslation - mBelowStackSpace - shiftTranslation); break; } } else if (position > 1) { view.setAlpha(0f); } }
From source file:com.example.igorklimov.popularmoviesdemo.fragments.DetailFragment.java
private void setupParallaxBar(final Toolbar bar, final View parallaxBar) { final boolean isPortrait = context.getResources() .getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT; new Handler().postDelayed(new Runnable() { @Override/*from w w w .j ava 2s .c o m*/ public void run() { mScroll.getViewTreeObserver() .addOnScrollChangedListener(new ViewTreeObserver.OnScrollChangedListener() { int j = bar.getHeight(); int b = parallaxBar.getHeight(); @Override public void onScrollChanged() { int i = mScroll.getScrollY(); float k = -parallaxBar.getTranslationY(); int n = -(i / 2); parallaxBar.setTranslationY(n); if (!isPortrait) { if (j + k >= b) { int i2 = -(j - (n + b)); bar.setTranslationY(Math.min(0, i2)); } } else { int i2 = (b - i - j); bar.setTranslationY(Math.min(0, i2)); } } }); } }, 300); }
From source file:com.comcast.freeflow.core.FreeFlowContainer.java
protected void returnItemToPoolIfNeeded(FreeFlowItem freeflowItem) { View v = freeflowItem.view; v.setTranslationX(0);/*w w w .j av a 2 s . c om*/ v.setTranslationY(0); v.setRotation(0); v.setScaleX(1f); v.setScaleY(1f); v.setAlpha(1); viewpool.returnViewToPool(v); }
From source file:org.getlantern.firetweet.fragment.support.UserFragment.java
private void updateScrollOffset(int offset) { final View space = mProfileBannerSpace; final ProfileBannerImageView profileBannerView = mProfileBannerView; final View profileBannerContainer = mProfileBannerContainer; final int spaceHeight = space.getHeight(); final float factor = MathUtils.clamp(offset / (float) spaceHeight, 0, 1); profileBannerContainer.setTranslationY(Math.max(-offset, -spaceHeight)); profileBannerView.setTranslationY(Math.min(offset, spaceHeight) / 2); if (mActionBarBackground != null && mTintedStatusContent != null) { mActionBarBackground.setFactor(factor); mTintedStatusContent.setFactor(factor); final float profileContentHeight = mProfileNameContainer.getHeight() + mProfileDetailsContainer.getHeight(); final float tabOutlineAlphaFactor; if ((offset - spaceHeight) > 0) { tabOutlineAlphaFactor = 1f - MathUtils.clamp((offset - spaceHeight) / profileContentHeight, 0, 1); } else {// w ww . j a v a2 s . co m tabOutlineAlphaFactor = 1f; } mActionBarBackground.setOutlineAlphaFactor(tabOutlineAlphaFactor); final FragmentActivity activity = getActivity(); if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) { setCompatToolbarOverlayAlpha(activity, factor * tabOutlineAlphaFactor); } if (activity instanceof IThemedActivity) { final Drawable drawable = mPagerIndicator.getBackground(); final int stackedTabColor; if (ThemeUtils.isDarkTheme(((IThemedActivity) activity).getCurrentThemeResourceId())) { stackedTabColor = getResources().getColor(R.color.background_color_action_bar_dark); final int contrastColor = ColorUtils.getContrastYIQ(stackedTabColor, 192); mPagerIndicator.setIconColor(contrastColor); mPagerIndicator.setLabelColor(contrastColor); mPagerIndicator.setStripColor(mUserUiColor); } else if (drawable instanceof ColorDrawable) { stackedTabColor = mUserUiColor; final int tabColor = (Integer) sArgbEvaluator.evaluate(tabOutlineAlphaFactor, stackedTabColor, mCardBackgroundColor); ((ColorDrawable) drawable).setColor(tabColor); final int contrastColor = ColorUtils.getContrastYIQ(tabColor, 192); mPagerIndicator.setIconColor(contrastColor); mPagerIndicator.setLabelColor(contrastColor); mPagerIndicator.setStripColor(contrastColor); } } else { final int contrastColor = ColorUtils.getContrastYIQ(mUserUiColor, 192); mPagerIndicator.setIconColor(contrastColor); mPagerIndicator.setLabelColor(contrastColor); mPagerIndicator.setStripColor(contrastColor); } mPagerIndicator.updateAppearance(); } updateTitleColor(); }
From source file:com.dgnt.dominionCardPicker.view.DynamicListView.java
/** * This method determines whether the hover cell has been shifted far enough * to invoke a cell swap. If so, then the respective cell swap candidate is * determined and the data set is changed. Upon posting a notification of the * data set change, a layout is invoked to place the cells in the right place. * Using a ViewTreeObserver and a corresponding OnPreDrawListener, we can * offset the cell being swapped to where it previously was and then animate it to * its new position./*from w w w .j a v a 2 s . com*/ */ private void handleCellSwitch() { final int deltaY = mLastEventY - mDownY; int deltaYTotal = mHoverCellOriginalBounds.top + mTotalOffset + deltaY; View belowView = getViewForID(mBelowItemId); View mobileView = getViewForID(mMobileItemId); View aboveView = getViewForID(mAboveItemId); boolean isBelow = (belowView != null) && (deltaYTotal > belowView.getTop()); boolean isAbove = (aboveView != null) && (deltaYTotal < aboveView.getTop()); if (isBelow || isAbove) { final long switchItemID = isBelow ? mBelowItemId : mAboveItemId; View switchView = isBelow ? belowView : aboveView; final int originalItem = getPositionForView(mobileView); if (switchView == null) { updateNeighborViewsForID(mMobileItemId); return; } swapElements(list, originalItem, getPositionForView(switchView)); ((BaseAdapter) getAdapter()).notifyDataSetChanged(); mDownY = mLastEventY; final int switchViewStartTop = switchView.getTop(); mobileView.setVisibility(View.VISIBLE); switchView.setVisibility(View.VISIBLE); updateNeighborViewsForID(mMobileItemId); final ViewTreeObserver observer = getViewTreeObserver(); observer.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() { public boolean onPreDraw() { observer.removeOnPreDrawListener(this); View switchView = getViewForID(switchItemID); mTotalOffset += deltaY; int switchViewNewTop = switchView.getTop(); int delta = switchViewStartTop - switchViewNewTop; switchView.setTranslationY(delta); ObjectAnimator animator = ObjectAnimator.ofFloat(switchView, View.TRANSLATION_Y, 0); animator.setDuration(MOVE_DURATION); animator.start(); return true; } }); } }