Change animation based on visibility of the drawable

    private void updateAnimating() {

        if (mDrawable != null) {

            if (isShown() && mAnimating) {

            if (getVisibility() == View.VISIBLE && mAnimating) {

                mDrawable.start();

            } else {

                mDrawable.stop();

/*

 * 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 com.android.settingslib.widget;

import android.app.Activity;

import android.graphics.drawable.AnimatedRotateDrawable;

import android.view.View;

import com.android.settingslib.TestConfig;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.robolectric.Robolectric;

import org.robolectric.RobolectricTestRunner;

import org.robolectric.annotation.Config;

import static com.google.common.truth.Truth.assertThat;

@RunWith(RobolectricTestRunner.class)

@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)

public class AnimatedImageViewTest {

    private AnimatedImageView mAnimatedImageView;

    @Before

    public void setUp() {

        Activity activity = Robolectric.setupActivity(Activity.class);

        mAnimatedImageView = new AnimatedImageView(activity);

        mAnimatedImageView.setImageDrawable(new AnimatedRotateDrawable());

    }

    @Test

    public void testAnimation_ViewVisible_AnimationRunning() {

        mAnimatedImageView.setVisibility(View.VISIBLE);

        mAnimatedImageView.setAnimating(true);

        AnimatedRotateDrawable drawable = (AnimatedRotateDrawable) mAnimatedImageView.getDrawable();

        assertThat(drawable.isRunning()).isTrue();

    }

}