Awesome

ExpectAnim

Describe your animation and run !

new ExpectAnim()

                .expect(avatar)
                .toBe(
                    Expectations...
                )
                .toAnimation()
                .start();

Download

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In your module

compile 'com.github.florent37:expectanim:1.0.8'

This code describe the video above

new ExpectAnim()

                .expect(avatar)
                .toBe(
                        bottomOfParent().withMarginDp(16),
                        leftOfParent().withMarginDp(16),
                        width(40).toDp().keepRatio()
                )

                .expect(name)
                .toBe(
                        toRightOf(avatar).withMarginDp(16),
                        sameCenterVerticalAs(avatar),
                        toHaveTextColor(Color.WHITE)
                )

                .expect(subname)
                .toBe(
                        toRightOf(name).withMarginDp(5),
                        sameCenterVerticalAs(name),
                        toHaveTextColor(Color.WHITE)
                )

                .expect(follow)
                .toBe(
                        rightOfParent().withMarginDp(4),
                        bottomOfParent().withMarginDp(12),
                        toHaveBackgroundAlpha(0f)
                )

                .expect(message)
                .toBe(
                        aboveOf(follow).withMarginDp(4),
                        rightOfParent().withMarginDp(4),
                        toHaveBackgroundAlpha(0f)
                )

                .expect(bottomLayout)
                .toBe(
                        atItsOriginalPosition()
                )

                .expect(content)
                .toBe(
                        atItsOriginalPosition(),
                        visible()
                )

                .toAnimation()
                .setDuration(1500)

                .start();

Follow scroll

Use setPercent to apply modify the current step of the animation

Exemple with a scrollview

this.expectAnimMove = new ExpectAnim()
                .expect(username)
                .toBe(
                        toRightOf(avatar).withMarginDp(16),
                        sameCenterVerticalAs(avatar),
                        alpha(0.5f)
                )

                .expect(avatar)
                .toBe(
                        topOfParent(),
                        leftOfParent().withMarginDp(16),
                        scale(0.5f, 0.5f)
                )
                .expect(follow)
                .toBe(
                        rightOfParent().withMarginDp(16),
                        sameCenterVerticalAs(avatar)
                )

                .expect(backbground)
                .toBe(
                        height(height).withGravity(Gravity.LEFT|Gravity.START, Gravity.TOP)
                )

                .toAnimation();

scrollView.setOnScrollChangeListener(new NestedScrollView.OnScrollChangeListener() {
    @Override
    public void onScrollChange(NestedScrollView v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {
        final float percent = (scrollY * 1f) / v.getMaxScrollAmount();

        expectAnimMove.setPercent(percent);
    }
});

Concat

You can play an anim after one other using ExpectAnim.concat (static method)

ExpectAnim.concat(
                new ExpectAnim()
                        .expect(image1)
                        .toBe(
                                withCameraDistance(500f),
                                flippedHorizontally()
                        )
                        .toAnimation()
                        .setDuration(1000),
                new ExpectAnim()
                        .expect(image2)
                        .toBe(
                                withCameraDistance(1000f),
                                flippedVertically()
                        )
                        .toAnimation()
                        .setDuration(500)
                )
                .start()

Apply directly

Use setNow to apply directly the transformation

new ExpectAnim()
                .expect(view)
                .toBe(
                        outOfScreen(Gravity.BOTTOM)
                )
                .toAnimation()
                .setNow();

Reset

Use reset to return to the initial state of views

expectAnim.reset():

List of expectations

new ExpectAnim()
                .expect(view)
                .toBe(

                    //.withMargin(marginPx)
                    //.withMarginDp(margin)
                    //.withMarginDimen(R.dimen.margin)

                    toRightOf(view)
                    toLeftOf(view)
                    belowOf(view)
                    aboveOf(view)

                    atItsOriginalPosition()


                    sameCenterAs(view, horizontal, vertical)
                    sameCenterHorizontalAs(view)
                    sameCenterVerticalAs(view)
                    centerInParent(horizontal, vertical)
                    centerVerticalInParent()
                    centerHorizontalInParent()

                    centerBetweenViews(view1, view2, horizontal, vertical)
                    centerBetweenViewAndParent(otherView, horizontal, vertical, toBeOnRight, toBeOnBottom)

                    topOfParent()
                    rightOfParent()
                    bottomOfParent()
                    leftOfParent()

                    alignBottom(otherView)
                    alignTop(otherView)
                    alignLeft(otherView)
                    alignRight(otherView)

                    outOfScreen(gravitiy)  //Gravity.LEFT / Gravity.RIGHT / Gravity.TOP / Gravity.BOTTOM

                    alpha(alpha)
                    sameAlphaAs(otherView)
                    visible()
                    invisible()

                    //.keepRatio()
                    //.withGravity(horizontalGravity, verticalGravity)

                    atItsOriginalScale()

                    scale(scaleX, scaleY)
                    height(height)
                    width(width)
                    sameScaleAs(otherView)
                    sameWidthAs(otherView)
                    sameHeightAs(otherView)


                    toHaveTextColor(textColor)
                    toHaveBackgroundAlpha(alpha)

                    rotated(rotation)
                    vertical(bottomOfViewAtLeft)
                    atItsOriginalRotation()
                )

Proguard

-keep class com.github.florent37.expectanim.*{ *; }
-dontwarn com.github.florent37.expectanim.**

Changelog

1.0.7

Added startDelay

1.0.6

Added ExpectAnim.concat

1.0.4

Fixed listeners references

1.0.3

Alpha 0 force view to be INVISIBLE`

1.0.2

Added flips rotations

flippedHorizontally() flippedVertically() flippedHorizontallyAndVertically() withCameraDistance(1000f)

1.0.1

Added rotations

Credits

Author: Florent Champigny

Blog : http://www.tutos-android-france.com/

Fiches Plateau Moto : https://www.fiches-plateau-moto.fr/

License

Copyright 2017 florent37, Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.