Example usage for android.animation AnimatorSet setInterpolator

List of usage examples for android.animation AnimatorSet setInterpolator

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  4. android.animation.*
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  6. setInterpolator

Introduction

In this page you can find the example usage for android.animation AnimatorSet setInterpolator.

Prototype

@Override
public void setInterpolator(TimeInterpolator interpolator)

Source Link

Document

Sets the TimeInterpolator for all current #getChildAnimations() child animations of this AnimatorSet.

Usage

From source file:support.plus.reportit.rv.FragmentActivity.java

private void createCustomAnimation() {
    final FloatingActionMenu menu3 = (FloatingActionMenu) findViewById(R.id.menuShareReport);

    AnimatorSet set = new AnimatorSet();

    ObjectAnimator scaleOutX = ObjectAnimator.ofFloat(menu3.getMenuIconView(), "scaleX", 1.0f, 0.2f);
    ObjectAnimator scaleOutY = ObjectAnimator.ofFloat(menu3.getMenuIconView(), "scaleY", 1.0f, 0.2f);

    ObjectAnimator scaleInX = ObjectAnimator.ofFloat(menu3.getMenuIconView(), "scaleX", 0.2f, 1.0f);
    ObjectAnimator scaleInY = ObjectAnimator.ofFloat(menu3.getMenuIconView(), "scaleY", 0.2f, 1.0f);

    scaleOutX.setDuration(50);//from w  w  w  .ja va  2 s  . c  om
    scaleOutY.setDuration(50);

    scaleInX.setDuration(150);
    scaleInY.setDuration(150);

    scaleInX.addListener(new AnimatorListenerAdapter() {
        @Override
        public void onAnimationStart(Animator animation) {
            menu3.getMenuIconView().setImageResource(
                    menu3.isOpened() ? R.drawable.ic_unarchive_white_24dp : R.drawable.ic_done_white_24dp);
        }
    });

    set.play(scaleOutX).with(scaleOutY);
    set.play(scaleInX).with(scaleInY).after(scaleOutX);
    set.setInterpolator(new OvershootInterpolator(2));

    menu3.setIconToggleAnimatorSet(set);
}

From source file:com.androidinspain.deskclock.alarms.dataadapter.ExpandedAlarmViewHolder.java

@Override
public Animator onAnimateChange(List<Object> payloads, int fromLeft, int fromTop, int fromRight, int fromBottom,
        long duration) {
    if (payloads == null || payloads.isEmpty() || !payloads.contains(ANIMATE_REPEAT_DAYS)) {
        return null;
    }//from  w  w  w . j  a v  a  2s  . c o  m

    final boolean isExpansion = repeatDays.getVisibility() == View.VISIBLE;
    final int height = repeatDays.getHeight();
    setTranslationY(isExpansion ? -height : 0f, isExpansion ? -height : height);
    repeatDays.setVisibility(View.VISIBLE);
    repeatDays.setAlpha(isExpansion ? 0f : 1f);

    final AnimatorSet animatorSet = new AnimatorSet();
    animatorSet.playTogether(
            AnimatorUtils.getBoundsAnimator(itemView, fromLeft, fromTop, fromRight, fromBottom,
                    itemView.getLeft(), itemView.getTop(), itemView.getRight(), itemView.getBottom()),
            ObjectAnimator.ofFloat(repeatDays, View.ALPHA, isExpansion ? 1f : 0f),
            ObjectAnimator.ofFloat(repeatDays, TRANSLATION_Y, isExpansion ? 0f : -height),
            ObjectAnimator.ofFloat(ringtone, TRANSLATION_Y, 0f),
            ObjectAnimator.ofFloat(vibrate, TRANSLATION_Y, 0f),
            ObjectAnimator.ofFloat(editLabel, TRANSLATION_Y, 0f),
            ObjectAnimator.ofFloat(preemptiveDismissButton, TRANSLATION_Y, 0f),
            ObjectAnimator.ofFloat(hairLine, TRANSLATION_Y, 0f),
            ObjectAnimator.ofFloat(delete, TRANSLATION_Y, 0f),
            ObjectAnimator.ofFloat(arrow, TRANSLATION_Y, 0f));
    animatorSet.addListener(new AnimatorListenerAdapter() {
        @Override
        public void onAnimationEnd(Animator animator) {
            setTranslationY(0f, 0f);
            repeatDays.setAlpha(1f);
            repeatDays.setVisibility(isExpansion ? View.VISIBLE : View.GONE);
            itemView.requestLayout();
        }
    });
    animatorSet.setDuration(duration);
    animatorSet.setInterpolator(AnimatorUtils.INTERPOLATOR_FAST_OUT_SLOW_IN);

    return animatorSet;
}

From source file:org.mariotaku.twidere.fragment.AccountsDashboardFragment.java

private void onAccountSelected(AccountProfileImageViewHolder holder, @NonNull final ParcelableAccount account) {
    if (mSwitchAccountAnimationPlaying)
        return;//from  w w  w  . j  a v  a 2s .  com
    final ImageView snapshotView = mFloatingProfileImageSnapshotView;
    final ShapedImageView profileImageView = mAccountProfileImageView;
    final ShapedImageView clickedImageView = holder.getIconView();

    // Reset snapshot view position
    snapshotView.setPivotX(0);
    snapshotView.setPivotY(0);
    snapshotView.setTranslationX(0);
    snapshotView.setTranslationY(0);

    final Matrix matrix = new Matrix();
    final RectF sourceBounds = new RectF(), destBounds = new RectF(), snapshotBounds = new RectF();
    getLocationOnScreen(clickedImageView, sourceBounds);
    getLocationOnScreen(profileImageView, destBounds);
    getLocationOnScreen(snapshotView, snapshotBounds);
    final float finalScale = destBounds.width() / sourceBounds.width();
    final Bitmap snapshotBitmap = TransitionUtils.createViewBitmap(clickedImageView, matrix,
            new RectF(0, 0, sourceBounds.width(), sourceBounds.height()));
    final ViewGroup.LayoutParams lp = snapshotView.getLayoutParams();
    lp.width = clickedImageView.getWidth();
    lp.height = clickedImageView.getHeight();
    snapshotView.setLayoutParams(lp);
    // Copied from MaterialNavigationDrawer: https://github.com/madcyph3r/AdvancedMaterialDrawer/
    AnimatorSet set = new AnimatorSet();
    set.play(ObjectAnimator.ofFloat(snapshotView, View.TRANSLATION_X, sourceBounds.left - snapshotBounds.left,
            destBounds.left - snapshotBounds.left))
            .with(ObjectAnimator.ofFloat(snapshotView, View.TRANSLATION_Y,
                    sourceBounds.top - snapshotBounds.top, destBounds.top - snapshotBounds.top))
            .with(ObjectAnimator.ofFloat(snapshotView, View.SCALE_X, 1, finalScale))
            .with(ObjectAnimator.ofFloat(snapshotView, View.SCALE_Y, 1, finalScale))
            .with(ObjectAnimator.ofFloat(profileImageView, View.ALPHA, 1, 0))
            .with(ObjectAnimator.ofFloat(clickedImageView, View.SCALE_X, 0, 1))
            .with(ObjectAnimator.ofFloat(clickedImageView, View.SCALE_Y, 0, 1));
    final long animationTransition = 400;
    set.setDuration(animationTransition);
    set.setInterpolator(new DecelerateInterpolator());
    set.addListener(new AnimatorListener() {

        private Drawable clickedDrawable;
        private int[] clickedColors;

        @Override
        public void onAnimationStart(Animator animation) {
            snapshotView.setVisibility(View.VISIBLE);
            snapshotView.setImageBitmap(snapshotBitmap);
            final Drawable profileDrawable = profileImageView.getDrawable();
            clickedDrawable = clickedImageView.getDrawable();
            clickedColors = clickedImageView.getBorderColors();
            final ParcelableAccount oldSelectedAccount = mAccountsAdapter.getSelectedAccount();
            if (oldSelectedAccount == null)
                return;
            mMediaLoader.displayDashboardProfileImage(clickedImageView, oldSelectedAccount, profileDrawable);
            clickedImageView.setBorderColors(profileImageView.getBorderColors());

            displayAccountBanner(account);

            mSwitchAccountAnimationPlaying = true;
        }

        @Override
        public void onAnimationEnd(Animator animation) {
            finishAnimation();
        }

        @Override
        public void onAnimationCancel(Animator animation) {
            finishAnimation();
        }

        @Override
        public void onAnimationRepeat(Animator animation) {

        }

        private void finishAnimation() {
            final Editor editor = mPreferences.edit();
            editor.putString(KEY_DEFAULT_ACCOUNT_KEY, account.account_key.toString());
            editor.apply();
            mAccountsAdapter.setSelectedAccount(account);
            updateAccountActions();
            displayCurrentAccount(clickedDrawable);
            snapshotView.setVisibility(View.INVISIBLE);
            snapshotView.setImageDrawable(null);
            profileImageView.setImageDrawable(clickedDrawable);
            profileImageView.setBorderColors(clickedColors);
            profileImageView.setAlpha(1f);
            clickedImageView.setScaleX(1);
            clickedImageView.setScaleY(1);
            clickedImageView.setAlpha(1f);
            mSwitchAccountAnimationPlaying = false;
        }
    });
    set.start();

}

From source file:com.android.launcher2.AsyncTaskCallback.java

@Override
public void onClick(View v) {
    // When we have exited all apps or are in transition, disregard clicks
    if (!mLauncher.isAllAppsVisible() || mLauncher.getWorkspace().isSwitchingState())
        return;//from  w w w. ja v a  2  s .  c  o  m

    if (v instanceof PagedViewIcon) {
        // Animate some feedback to the click
        final ApplicationInfo appInfo = (ApplicationInfo) v.getTag();

        // Lock the drawable state to pressed until we return to Launcher
        if (mPressedIcon != null) {
            mPressedIcon.lockDrawableState();
        }

        // NOTE: We want all transitions from launcher to act as if the wallpaper were enabled
        // to be consistent.  So re-enable the flag here, and we will re-disable it as necessary
        // when Launcher resumes and we are still in AllApps.
        mLauncher.updateWallpaperVisibility(true);
        mLauncher.startActivitySafely(v, appInfo.intent, appInfo);

    } else if (v instanceof PagedViewWidget) {
        // Let the user know that they have to long press to add a widget
        if (mWidgetInstructionToast != null) {
            mWidgetInstructionToast.cancel();
        }
        mWidgetInstructionToast = Toast.makeText(getContext(), R.string.long_press_widget_to_add,
                Toast.LENGTH_SHORT);
        mWidgetInstructionToast.show();

        // Create a little animation to show that the widget can move
        float offsetY = getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY);
        final ImageView p = (ImageView) v.findViewById(R.id.widget_preview);
        AnimatorSet bounce = LauncherAnimUtils.createAnimatorSet();
        ValueAnimator tyuAnim = LauncherAnimUtils.ofFloat(p, "translationY", offsetY);
        tyuAnim.setDuration(125);
        ValueAnimator tydAnim = LauncherAnimUtils.ofFloat(p, "translationY", 0f);
        tydAnim.setDuration(100);
        bounce.play(tyuAnim).before(tydAnim);
        bounce.setInterpolator(new AccelerateInterpolator());
        bounce.start();
    }
}

From source file:com.phonemetra.turbo.launcher.AsyncTaskCallback.java

@Override
public void onClick(View v) {
    // When we have exited all apps or are in transition, disregard clicks
    if (!mLauncher.isAllAppsVisible() || mLauncher.getWorkspace().isSwitchingState())
        return;//from ww w  . ja va 2 s. c  o m

    if (v instanceof PagedViewIcon) {
        // Animate some feedback to the click
        final AppInfo appInfo = (AppInfo) v.getTag();

        // Lock the drawable state to pressed until we return to Launcher
        if (mPressedIcon != null) {
            mPressedIcon.lockDrawableState();
        }
        mLauncher.startActivitySafely(v, appInfo.intent, appInfo);
        mLauncher.getStats().recordLaunch(appInfo.intent);
    } else if (v instanceof PagedViewWidget) {
        // Let the user know that they have to long press to add a widget
        if (mWidgetInstructionToast != null) {
            mWidgetInstructionToast.cancel();
        }
        mWidgetInstructionToast = Toast.makeText(getContext(), R.string.long_press_widget_to_add,
                Toast.LENGTH_SHORT);
        mWidgetInstructionToast.show();

        // Create a little animation to show that the widget can move
        float offsetY = getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY);
        final ImageView p = (ImageView) v.findViewById(R.id.widget_preview);
        AnimatorSet bounce = LauncherAnimUtils.createAnimatorSet();
        ValueAnimator tyuAnim = LauncherAnimUtils.ofFloat(p, "translationY", offsetY);
        tyuAnim.setDuration(125);
        ValueAnimator tydAnim = LauncherAnimUtils.ofFloat(p, "translationY", 0f);
        tydAnim.setDuration(100);
        bounce.play(tyuAnim).before(tydAnim);
        bounce.setInterpolator(new AccelerateInterpolator());
        bounce.start();
    }
}

From source file:cc.flydev.launcher.Page.java

private void onDropToDelete() {
    final View dragView = mDragView;

    final float toScale = 0f;
    final float toAlpha = 0f;

    // Create and start the complex animation
    ArrayList<Animator> animations = new ArrayList<Animator>();
    AnimatorSet motionAnim = new AnimatorSet();
    motionAnim.setInterpolator(new DecelerateInterpolator(2));
    motionAnim.playTogether(ObjectAnimator.ofFloat(dragView, "scaleX", toScale),
            ObjectAnimator.ofFloat(dragView, "scaleY", toScale));
    animations.add(motionAnim);//from  ww  w.ja  v a2 s.c  o  m

    AnimatorSet alphaAnim = new AnimatorSet();
    alphaAnim.setInterpolator(new LinearInterpolator());
    alphaAnim.playTogether(ObjectAnimator.ofFloat(dragView, "alpha", toAlpha));
    animations.add(alphaAnim);

    final Runnable onAnimationEndRunnable = createPostDeleteAnimationRunnable(dragView);

    AnimatorSet anim = new AnimatorSet();
    anim.playTogether(animations);
    anim.setDuration(DRAG_TO_DELETE_FADE_OUT_DURATION);
    anim.addListener(new AnimatorListenerAdapter() {
        public void onAnimationEnd(Animator animation) {
            onAnimationEndRunnable.run();
        }
    });
    anim.start();

    mDeferringForDelete = true;
}

From source file:com.aliyun.homeshell.Folder.java

public void showSelectApps(int[] pos) {
    if (mRunningAnimatorSet != null) {
        if (!mRunningIsShow) {
            mRunningAnimatorSet.end();/* w w  w  .  ja va 2  s. c om*/
        } else {
            return;
        }
    }
    if (mAppsSelectView == null) {
        mAppsSelectView = (FolderAppsSelectView) LayoutInflater.from(getContext())
                .inflate(R.layout.folder_apps_select, null);
        mAppsSelectView.init(this, mInfo, mLauncher);
        mLauncher.getDragLayer().addView(mAppsSelectView);
    }
    mAppsSelectView.initSelectedState(mInfo);
    mAppsSelectView.setScaleX(0);
    mAppsSelectView.setScaleY(0);
    mAppsSelectView.setPivotX(pos[0]);
    mAppsSelectView.setPivotY(pos[1]);
    ObjectAnimator visToInvis = ObjectAnimator.ofFloat(this, "alpha", 1, 0);
    visToInvis.setDuration(mAnimatorDuration);
    ObjectAnimator invisToVisX = ObjectAnimator.ofFloat(mAppsSelectView, "scaleX", 0, 1);
    invisToVisX.setDuration(mAnimatorDuration);
    ObjectAnimator invisToVisY = ObjectAnimator.ofFloat(mAppsSelectView, "scaleY", 0, 1);
    invisToVisY.setDuration(mAnimatorDuration);
    List<Animator> animList = new ArrayList<Animator>();
    animList.add(visToInvis);
    animList.add(invisToVisX);
    animList.add(invisToVisY);
    final AnimatorSet as = new AnimatorSet();
    as.setInterpolator(new LinearInterpolator());
    as.addListener(new AnimatorListenerAdapter() {
        @Override
        public void onAnimationStart(Animator animator) {
            mAppsSelectView.setVisibility(View.VISIBLE);
            mRunningAnimatorSet = as;
            mRunningIsShow = true;
        }

        @Override
        public void onAnimationEnd(Animator animator) {
            mRunningAnimatorSet = null;
            mRunningIsShow = false;
            Folder.this.setVisibility(View.INVISIBLE);
            mAppsSelectView.setVisibility(View.VISIBLE);
            DisplayMetrics metric = new DisplayMetrics();
            mLauncher.getWindowManager().getDefaultDisplay().getMetrics(metric);
            int width = metric.widthPixels;
            int height = metric.heightPixels;
            mAppsSelectView.setPivotX(width / 2);
            mAppsSelectView.setPivotY(height / 2);
            mAppsSelectView.setFocusableInTouchMode(true);
            mAppsSelectView.setFocusable(true);
            mAppsSelectView.requestFocus();
        }
    });
    as.playTogether(animList);
    as.start();
}

From source file:org.telegram.ui.Components.ChatAttachAlert.java

@SuppressLint("NewApi")
private void startRevealAnimation(final boolean open) {
    containerView.setTranslationY(0);/*from  ww  w.j a v a2  s .com*/

    final AnimatorSet animatorSet = new AnimatorSet();

    View view = delegate.getRevealView();
    if (view.getVisibility() == View.VISIBLE
            && ((ViewGroup) view.getParent()).getVisibility() == View.VISIBLE) {
        final int coords[] = new int[2];
        view.getLocationInWindow(coords);
        float top;
        if (Build.VERSION.SDK_INT <= 19) {
            top = AndroidUtilities.displaySize.y - containerView.getMeasuredHeight()
                    - AndroidUtilities.statusBarHeight;
        } else {
            top = containerView.getY();
        }
        revealX = coords[0] + view.getMeasuredWidth() / 2;
        revealY = (int) (coords[1] + view.getMeasuredHeight() / 2 - top);
        if (Build.VERSION.SDK_INT <= 19) {
            revealY -= AndroidUtilities.statusBarHeight;
        }
    } else {
        revealX = AndroidUtilities.displaySize.x / 2 + backgroundPaddingLeft;
        revealY = (int) (AndroidUtilities.displaySize.y - containerView.getY());
    }

    int corners[][] = new int[][] { { 0, 0 }, { 0, AndroidUtilities.dp(304) },
            { containerView.getMeasuredWidth(), 0 },
            { containerView.getMeasuredWidth(), AndroidUtilities.dp(304) } };
    int finalRevealRadius = 0;
    int y = revealY - scrollOffsetY + backgroundPaddingTop;
    for (int a = 0; a < 4; a++) {
        finalRevealRadius = Math.max(finalRevealRadius,
                (int) Math.ceil(Math.sqrt((revealX - corners[a][0]) * (revealX - corners[a][0])
                        + (y - corners[a][1]) * (y - corners[a][1]))));
    }
    int finalRevealX = revealX <= containerView.getMeasuredWidth() ? revealX : containerView.getMeasuredWidth();

    ArrayList<Animator> animators = new ArrayList<>(3);
    animators.add(ObjectAnimator.ofFloat(this, "revealRadius", open ? 0 : finalRevealRadius,
            open ? finalRevealRadius : 0));
    animators.add(ObjectAnimator.ofInt(backDrawable, "alpha", open ? 51 : 0));
    if (Build.VERSION.SDK_INT >= 21) {
        try {
            animators.add(ViewAnimationUtils.createCircularReveal(containerView, finalRevealX, revealY,
                    open ? 0 : finalRevealRadius, open ? finalRevealRadius : 0));
        } catch (Exception e) {
            FileLog.e("tmessages", e);
        }
        animatorSet.setDuration(320);
    } else {
        if (!open) {
            animatorSet.setDuration(200);
            containerView.setPivotX(
                    revealX <= containerView.getMeasuredWidth() ? revealX : containerView.getMeasuredWidth());
            containerView.setPivotY(revealY);
            animators.add(ObjectAnimator.ofFloat(containerView, "scaleX", 0.0f));
            animators.add(ObjectAnimator.ofFloat(containerView, "scaleY", 0.0f));
            animators.add(ObjectAnimator.ofFloat(containerView, "alpha", 0.0f));
        } else {
            animatorSet.setDuration(250);
            containerView.setScaleX(1);
            containerView.setScaleY(1);
            containerView.setAlpha(1);
            if (Build.VERSION.SDK_INT <= 19) {
                animatorSet.setStartDelay(20);
            }
        }
    }
    animatorSet.playTogether(animators);
    animatorSet.addListener(new AnimatorListenerAdapter() {
        public void onAnimationEnd(Animator animation) {
            if (currentSheetAnimation != null && currentSheetAnimation.equals(animation)) {
                currentSheetAnimation = null;
                onRevealAnimationEnd(open);
                containerView.invalidate();
                containerView.setLayerType(View.LAYER_TYPE_NONE, null);
                if (!open) {
                    try {
                        dismissInternal();
                    } catch (Exception e) {
                        FileLog.e("tmessages", e);
                    }
                }
            }
        }

        @Override
        public void onAnimationCancel(Animator animation) {
            if (currentSheetAnimation != null && animatorSet.equals(animation)) {
                currentSheetAnimation = null;
            }
        }
    });

    if (open) {
        innerAnimators.clear();
        NotificationCenter.getInstance()
                .setAllowedNotificationsDutingAnimation(new int[] { NotificationCenter.dialogsNeedReload });
        NotificationCenter.getInstance().setAnimationInProgress(true);
        revealAnimationInProgress = true;

        int count = Build.VERSION.SDK_INT <= 19 ? 11 : 8;
        for (int a = 0; a < count; a++) {
            if (Build.VERSION.SDK_INT <= 19) {
                if (a < 8) {
                    views[a].setScaleX(0.1f);
                    views[a].setScaleY(0.1f);
                }
                views[a].setAlpha(0.0f);
            } else {
                views[a].setScaleX(0.7f);
                views[a].setScaleY(0.7f);
            }

            InnerAnimator innerAnimator = new InnerAnimator();

            int buttonX = views[a].getLeft() + views[a].getMeasuredWidth() / 2;
            int buttonY = views[a].getTop() + attachView.getTop() + views[a].getMeasuredHeight() / 2;
            float dist = (float) Math.sqrt(
                    (revealX - buttonX) * (revealX - buttonX) + (revealY - buttonY) * (revealY - buttonY));
            float vecX = (revealX - buttonX) / dist;
            float vecY = (revealY - buttonY) / dist;
            views[a].setPivotX(views[a].getMeasuredWidth() / 2 + vecX * AndroidUtilities.dp(20));
            views[a].setPivotY(views[a].getMeasuredHeight() / 2 + vecY * AndroidUtilities.dp(20));
            innerAnimator.startRadius = dist - AndroidUtilities.dp(27 * 3);

            views[a].setTag(R.string.AppName, 1);
            animators = new ArrayList<>();
            final AnimatorSet animatorSetInner;
            if (a < 8) {
                animators.add(ObjectAnimator.ofFloat(views[a], "scaleX", 0.7f, 1.05f));
                animators.add(ObjectAnimator.ofFloat(views[a], "scaleY", 0.7f, 1.05f));

                animatorSetInner = new AnimatorSet();
                animatorSetInner.playTogether(ObjectAnimator.ofFloat(views[a], "scaleX", 1.0f),
                        ObjectAnimator.ofFloat(views[a], "scaleY", 1.0f));
                animatorSetInner.setDuration(100);
                animatorSetInner.setInterpolator(decelerateInterpolator);
            } else {
                animatorSetInner = null;
            }
            if (Build.VERSION.SDK_INT <= 19) {
                animators.add(ObjectAnimator.ofFloat(views[a], "alpha", 1.0f));
            }
            innerAnimator.animatorSet = new AnimatorSet();
            innerAnimator.animatorSet.playTogether(animators);
            innerAnimator.animatorSet.setDuration(150);
            innerAnimator.animatorSet.setInterpolator(decelerateInterpolator);
            innerAnimator.animatorSet.addListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationEnd(Animator animation) {
                    if (animatorSetInner != null) {
                        animatorSetInner.start();
                    }
                }
            });
            innerAnimators.add(innerAnimator);
        }
    }
    currentSheetAnimation = animatorSet;
    animatorSet.start();
}

From source file:com.zyk.launcher.AsyncTaskCallback.java

@Override
public void onClick(View v) {
    // When we have exited all apps or are in transition, disregard clicks
    if (!mLauncher.isAllAppsVisible() || mLauncher.getWorkspace().isSwitchingState()
            || !(v instanceof PagedViewWidget))
        return;/*ww  w . jav  a  2s.  c  om*/

    // Let the user know that they have to long press to add a widget
    if (mWidgetInstructionToast != null) {
        mWidgetInstructionToast.cancel();
    }
    mWidgetInstructionToast = Toast.makeText(getContext(), R.string.long_press_widget_to_add,
            Toast.LENGTH_SHORT);
    mWidgetInstructionToast.show();

    // Create a little animation to show that the widget can move
    float offsetY = getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY);
    final ImageView p = (ImageView) v.findViewById(R.id.widget_preview);
    AnimatorSet bounce = LauncherAnimUtils.createAnimatorSet();
    ValueAnimator tyuAnim = LauncherAnimUtils.ofFloat(p, "translationY", offsetY);
    tyuAnim.setDuration(125);
    ValueAnimator tydAnim = LauncherAnimUtils.ofFloat(p, "translationY", 0f);
    tydAnim.setDuration(100);
    bounce.play(tyuAnim).before(tydAnim);
    bounce.setInterpolator(new AccelerateInterpolator());
    bounce.start();
}

From source file:org.telegram.ui.Components.ChatAttachAlert.java

private boolean processTouchEvent(MotionEvent event) {
    if (!pressed && event.getActionMasked() == MotionEvent.ACTION_DOWN
            || event.getActionMasked() == MotionEvent.ACTION_POINTER_DOWN) {
        if (!takingPhoto) {
            pressed = true;//from   w ww  .  ja  v  a  2 s . c  om
            maybeStartDraging = true;
            lastY = event.getY();
        }
    } else if (pressed) {
        if (event.getActionMasked() == MotionEvent.ACTION_MOVE) {
            float newY = event.getY();
            float dy = (newY - lastY);
            if (maybeStartDraging) {
                if (Math.abs(dy) > AndroidUtilities.getPixelsInCM(0.4f, false)) {
                    maybeStartDraging = false;
                }
            } else {
                cameraView.setTranslationY(cameraView.getTranslationY() + dy);
                lastY = newY;
                if (cameraPanel.getTag() == null) {
                    cameraPanel.setTag(1);
                    AnimatorSet animatorSet = new AnimatorSet();
                    animatorSet.playTogether(ObjectAnimator.ofFloat(cameraPanel, "alpha", 0.0f),
                            ObjectAnimator.ofFloat(flashModeButton[0], "alpha", 0.0f),
                            ObjectAnimator.ofFloat(flashModeButton[1], "alpha", 0.0f));
                    animatorSet.setDuration(200);
                    animatorSet.start();
                }
            }
        } else if (event.getActionMasked() == MotionEvent.ACTION_CANCEL
                || event.getActionMasked() == MotionEvent.ACTION_UP
                || event.getActionMasked() == MotionEvent.ACTION_POINTER_UP) {
            pressed = false;
            if (Math.abs(cameraView.getTranslationY()) > cameraView.getMeasuredHeight() / 6.0f) {
                closeCamera(true);
            } else {
                AnimatorSet animatorSet = new AnimatorSet();
                animatorSet.playTogether(ObjectAnimator.ofFloat(cameraView, "translationY", 0.0f),
                        ObjectAnimator.ofFloat(cameraPanel, "alpha", 1.0f),
                        ObjectAnimator.ofFloat(flashModeButton[0], "alpha", 1.0f),
                        ObjectAnimator.ofFloat(flashModeButton[1], "alpha", 1.0f));
                animatorSet.setDuration(250);
                animatorSet.setInterpolator(interpolator);
                animatorSet.start();
                cameraPanel.setTag(null);
            }
        }
    }
    return true;
}