Example usage for android.graphics.drawable ColorDrawable setAlpha

Introduction

In this page you can find the example usage for android.graphics.drawable ColorDrawable setAlpha.

Prototype

@Override
public void setAlpha(int alpha) 

Source Link

Document

Sets the color's alpha value.

Usage

From source file:com.brodev.socialapp.view.ImageActivity.java

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

    ColorDrawable color = new ColorDrawable(Color.BLACK);
    color.setAlpha(128);
    getSupportActionBar().setBackgroundDrawable(color);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    setContentView(R.layout.market_place_image_view);

    File cacheDir = new File(this.getCacheDir(), "imgcachedir");
    if (!cacheDir.exists())
        cacheDir.mkdir();// w w w .ja  v a2 s  .c o  m

    Bundle bundle = getIntent().getExtras();

    String image = bundle.getString("image");
    String title = bundle.getString("title");
    getSupportActionBar().setTitle(title);

    ImageView imageView = (ImageView) findViewById(R.id.audiochatImg);

    networkUntil.drawImageUrl(imageView, image, R.drawable.loading);

    this.getWindow().setBackgroundDrawableResource(android.R.color.black);
}

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From source file:com.snowdream.wallpaper.ImagePagerActivity.java

private void initUI() {

    setTitle(R.string.app_name);//from  w  w w  .  j  ava2 s.  c  o  m
    getWindow().requestFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
    ColorDrawable color = new ColorDrawable(Color.BLACK);
    color.setAlpha(128);
    getSupportActionBar().setBackgroundDrawable(color);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    this.getWindow().setBackgroundDrawableResource(android.R.color.black);
    setContentView(R.layout.activity_image_pager);

    pager = (ViewPager) findViewById(R.id.pager);
    pager.setOnPageChangeListener(new OnPageChangeListener() {

        @Override
        public void onPageSelected(int arg0) {
            if (actionProvider != null) {
                actionProvider.setShareIntent(createShareIntent());
            }
        }

        @Override
        public void onPageScrolled(int arg0, float arg1, int arg2) {

        }

        @Override
        public void onPageScrollStateChanged(int arg0) {

        }
    });

}

---

From source file:com.facebook.litho.reference.ColorDrawableReference.java

@Override
protected Drawable onAcquire(ComponentContext context, Reference reference) {
    ColorDrawable drawable = null;

    if (CAN_RECYCLE) {
        drawable = sPool.acquire();// w ww .  j  a v  a  2s.  c o  m
    }

    if (drawable == null) {
        drawable = new ColorDrawable(((State) reference).mColor);
    } else {
        drawable.setColor(((State) reference).mColor);
    }

    drawable.setAlpha(((State) reference).mAlpha);

    return drawable;
}

---

From source file:com.antonioleiva.materializeyourapp.DetailActivity.java

private void setComponentsStatus(View scrollView, ImageView image) {
    int scrollY = scrollView.getScrollY();
    image.setTranslationY(-scrollY / 2);
    ColorDrawable background = (ColorDrawable) toolbar.getBackground();
    int padding = scrollView.getPaddingTop();
    double alpha = (1 - (((double) padding - (double) scrollY) / (double) padding)) * 255.0;
    alpha = alpha < 0 ? 0 : alpha;/*  w ww . j  a  va2  s.  c  o m*/
    alpha = alpha > 255 ? 255 : alpha;

    background.setAlpha((int) alpha);

    float scrollRatio = (float) (alpha / 255f);
    int titleColor = getAlphaColor(Color.WHITE, scrollRatio);
    toolbar.setTitleTextColor(titleColor);
}

---

From source file:com.brodev.socialapp.view.ImagePagerActivity.java

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

    getWindow().requestFeature(Window.FEATURE_ACTION_BAR_OVERLAY);

    ColorDrawable color = new ColorDrawable(Color.TRANSPARENT);
    color.setAlpha(128);
    getSupportActionBar().setBackgroundDrawable(color);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    setContentView(R.layout.ac_image_pager);

    File cacheDir = new File(this.getCacheDir(), "imgcachedir");
    if (!cacheDir.exists())
        cacheDir.mkdir();/*from  w  w w .jav  a2s. c o m*/

    // phrase manager
    phraseManager = new PhraseManager(getApplicationContext());

    Bundle bundle = getIntent().getExtras();

    String[] imageUrls = bundle.getStringArray("image");
    String[] imagesId = bundle.getStringArray("photo_id");
    String[] HasLike = bundle.getStringArray("HasLike");
    String[] FeedisLike = bundle.getStringArray("FeedisLike");
    String[] Total_like = bundle.getStringArray("Total_like");
    String[] Total_comment = bundle.getStringArray("Total_comment");
    String[] Itemid = bundle.getStringArray("Itemid");
    String[] Type = bundle.getStringArray("Type");

    int pagerPosition = bundle.getInt("position", 0);

    if (savedInstanceState != null) {
        pagerPosition = savedInstanceState.getInt(STATE_POSITION);
    }

    pager = (ViewPager) findViewById(R.id.pager);
    pager.setAdapter(new ImagePagerAdapter(this, imageUrls, imagesId, HasLike, FeedisLike, Total_like,
            Total_comment, Itemid, Type));

    pager.setOffscreenPageLimit(2);
    pager.setCurrentItem(pagerPosition);

    this.getWindow().setBackgroundDrawableResource(android.R.color.transparent);
}

---

From source file:de.dreier.mytargets.utils.transitions.FabTransform.java

@Override
public Animator createAnimator(@NonNull final ViewGroup sceneRoot, final TransitionValues startValues,
        final TransitionValues endValues) {
    if (startValues == null || endValues == null) {
        return null;
    }//from  ww w .ja v  a  2s  .com

    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 = new FastOutSlowInInterpolator();
    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.height() / 2));
        circularReveal.setInterpolator(new FastOutLinearInInterpolator());
    } 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(new LinearOutSlowInInterpolator());

        // 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 NoPauseAnimator(transition);
}

---

From source file:com.amitupadhyay.aboutexample.ui.transitions.FabTransform.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);
    }/*w w w .  j av  a 2  s. c o  m*/

    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()));
    } 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.hitomi.circlemenu.transtion.FabTransform.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'page_two 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  ww  .ja v a 2 s .  c  o  m

    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()));
    } 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'page_two shadow is drawn twice (by each activity) which is jarring. This workaround
    // still causes the shadow to snap, but it'page_two 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:ameircom.keymedia.Activity.transition.FabTransform.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 .  j  av  a2s  .  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.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.github.takahirom.plaidanimation.transition.FabTransform.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 = new FastOutSlowInInterpolator();
    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);
    }// w  w  w . j a v a  2 s. c om

    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(new FastOutLinearInInterpolator());
    } 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(new LinearOutSlowInInterpolator());

        // 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);
}

---

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