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A library jar that provides APIs for Applications written for the Google Android Platform.
/*
* Copyright (C) 2016 The Android Open Source Project
*
* 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.
*/
package androidx.transition;
import static org.hamcrest.core.Is.is;
import static org.hamcrest.core.IsEqual.equalTo;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertThat;
import android.animation.Animator;
import android.animation.ObjectAnimator;
import android.support.test.annotation.UiThreadTest;
import android.support.test.filters.MediumTest;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import org.junit.Before;
import org.junit.Test;
import java.util.Arrays;
@MediumTest
public class VisibilityTest extends BaseTest {
private View mView;
private ViewGroup mRoot;
@UiThreadTest
@Before
public void setUp() {
mRoot = rule.getActivity().getRoot();
mView = new View(rule.getActivity());
mRoot.addView(mView, new ViewGroup.LayoutParams(100, 100));
}
@Test
public void testMode() {
final CustomVisibility visibility = new CustomVisibility();
assertThat(visibility.getMode(), is(Visibility.MODE_IN | Visibility.MODE_OUT));
visibility.setMode(Visibility.MODE_IN);
assertThat(visibility.getMode(), is(Visibility.MODE_IN));
}
@Test
@UiThreadTest
public void testCustomVisibility() {
final CustomVisibility visibility = new CustomVisibility();
assertThat(visibility.getName(), is(equalTo(CustomVisibility.class.getName())));
assertNotNull(visibility.getTransitionProperties());
// Capture start values
mView.setScaleX(0.5f);
final TransitionValues startValues = new TransitionValues();
startValues.view = mView;
visibility.captureStartValues(startValues);
assertThat((float) startValues.values.get(CustomVisibility.PROPNAME_SCALE_X), is(0.5f));
// Hide the view and capture end values
mView.setVisibility(View.GONE);
final TransitionValues endValues = new TransitionValues();
endValues.view = mView;
visibility.captureEndValues(endValues);
// This should invoke onDisappear, not onAppear
ObjectAnimator animator = (ObjectAnimator) visibility
.createAnimator(mRoot, startValues, endValues);
assertNotNull(animator);
assertThat(animator.getPropertyName(), is(equalTo("scaleX")));
// Jump to the end of the animation
animator.end();
// This value confirms that onDisappear, not onAppear, was called
assertThat((float) animator.getAnimatedValue(), is(0.25f));
}
@Test
@UiThreadTest
public void testCustomVisibility2() {
final CustomVisibility2 visibility = new CustomVisibility2();
final TransitionValues startValues = new TransitionValues();
startValues.view = mView;
visibility.captureStartValues(startValues);
mView.setVisibility(View.GONE);
final TransitionValues endValues = new TransitionValues();
endValues.view = mView;
visibility.captureEndValues(endValues);
ObjectAnimator animator = (ObjectAnimator) visibility
.createAnimator(mRoot, startValues, endValues);
assertNotNull(animator);
// Jump to the end of the animation
animator.end();
// This value confirms that onDisappear, not onAppear, was called
assertThat((float) animator.getAnimatedValue(), is(0.25f));
}
/**
* A custom {@link Visibility} with 5-arg onAppear/Disappear
*/
public static class CustomVisibility extends Visibility {
static final String PROPNAME_SCALE_X = "customVisibility:scaleX";
private static String[] sTransitionProperties;
@Nullable
@Override
public String[] getTransitionProperties() {
if (sTransitionProperties == null) {
String[] properties = super.getTransitionProperties();
if (properties != null) {
sTransitionProperties = Arrays.copyOf(properties, properties.length + 1);
} else {
sTransitionProperties = new String[1];
}
sTransitionProperties[sTransitionProperties.length - 1] = PROPNAME_SCALE_X;
}
return sTransitionProperties;
}
@Override
public void captureStartValues(@NonNull TransitionValues transitionValues) {
super.captureStartValues(transitionValues);
transitionValues.values.put(PROPNAME_SCALE_X, transitionValues.view.getScaleX());
}
@Override
public Animator onAppear(ViewGroup sceneRoot, TransitionValues startValues,
int startVisibility, TransitionValues endValues, int endVisibility) {
if (startValues == null) {
return null;
}
float startScaleX = (float) startValues.values.get(PROPNAME_SCALE_X);
return ObjectAnimator.ofFloat(startValues.view, "scaleX", startScaleX, 0.75f);
}
@Override
public Animator onDisappear(ViewGroup sceneRoot, TransitionValues startValues,
int startVisibility, TransitionValues endValues, int endVisibility) {
if (startValues == null) {
return null;
}
float startScaleX = (float) startValues.values.get(PROPNAME_SCALE_X);
return ObjectAnimator.ofFloat(startValues.view, "scaleX", startScaleX, 0.25f);
}
}
/**
* A custom {@link Visibility} with 4-arg onAppear/Disappear
*/
public static class CustomVisibility2 extends Visibility {
static final String PROPNAME_SCALE_X = "customVisibility:scaleX";
@Override
public void captureStartValues(@NonNull TransitionValues transitionValues) {
super.captureStartValues(transitionValues);
transitionValues.values.put(PROPNAME_SCALE_X, transitionValues.view.getScaleX());
}
@Override
public Animator onAppear(ViewGroup sceneRoot, View view, TransitionValues startValues,
TransitionValues endValues) {
float startScaleX = startValues == null ? 0.25f :
(float) startValues.values.get(PROPNAME_SCALE_X);
return ObjectAnimator.ofFloat(view, "scaleX", startScaleX, 0.75f);
}
@Override
public Animator onDisappear(ViewGroup sceneRoot, View view, TransitionValues startValues,
TransitionValues endValues) {
if (startValues == null) {
return null;
}
float startScaleX = (float) startValues.values.get(PROPNAME_SCALE_X);
return ObjectAnimator.ofFloat(view, "scaleX", startScaleX, 0.25f);
}
}
}