BundleableUtil.java
/*
* Copyright 2021 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.media3.common.util;
import static androidx.media3.common.util.Assertions.checkNotNull;
import static androidx.media3.common.util.Util.castNonNull;
import android.os.Bundle;
import android.util.SparseArray;
import androidx.annotation.Nullable;
import androidx.media3.common.Bundleable;
import com.google.common.collect.ImmutableList;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
/** Utilities for {@link Bundleable}. */
@UnstableApi
public final class BundleableUtil {
/** Converts a list of {@link Bundleable} to a list {@link Bundle}. */
public static <T extends Bundleable> ImmutableList<Bundle> toBundleList(List<T> bundleableList) {
ImmutableList.Builder<Bundle> builder = ImmutableList.builder();
for (int i = 0; i < bundleableList.size(); i++) {
Bundleable bundleable = bundleableList.get(i);
builder.add(bundleable.toBundle());
}
return builder.build();
}
/** Converts a list of {@link Bundle} to a list of {@link Bundleable}. */
public static <T extends Bundleable> ImmutableList<T> fromBundleList(
Bundleable.Creator<T> creator, List<Bundle> bundleList) {
ImmutableList.Builder<T> builder = ImmutableList.builder();
for (int i = 0; i < bundleList.size(); i++) {
Bundle bundle = checkNotNull(bundleList.get(i)); // Fail fast during parsing.
T bundleable = creator.fromBundle(bundle);
builder.add(bundleable);
}
return builder.build();
}
/**
* Converts a collection of {@link Bundleable} to an {@link ArrayList} of {@link Bundle} so that
* the returned list can be put to {@link Bundle} using {@link Bundle#putParcelableArrayList}
* conveniently.
*/
public static <T extends Bundleable> ArrayList<Bundle> toBundleArrayList(
Collection<T> bundleables) {
ArrayList<Bundle> arrayList = new ArrayList<>(bundleables.size());
for (T element : bundleables) {
arrayList.add(element.toBundle());
}
return arrayList;
}
/**
* Converts a {@link SparseArray} of {@link Bundle} to a {@link SparseArray} of {@link
* Bundleable}.
*/
public static <T extends Bundleable> SparseArray<T> fromBundleSparseArray(
Bundleable.Creator<T> creator, SparseArray<Bundle> bundleSparseArray) {
SparseArray<T> result = new SparseArray<>(bundleSparseArray.size());
for (int i = 0; i < bundleSparseArray.size(); i++) {
result.put(bundleSparseArray.keyAt(i), creator.fromBundle(bundleSparseArray.valueAt(i)));
}
return result;
}
/**
* Converts a {@link SparseArray} of {@link Bundleable} to an {@link SparseArray} of {@link
* Bundle} so that the returned {@link SparseArray} can be put to {@link Bundle} using {@link
* Bundle#putSparseParcelableArray} conveniently.
*/
public static <T extends Bundleable> SparseArray<Bundle> toBundleSparseArray(
SparseArray<T> bundleableSparseArray) {
SparseArray<Bundle> sparseArray = new SparseArray<>(bundleableSparseArray.size());
for (int i = 0; i < bundleableSparseArray.size(); i++) {
sparseArray.put(bundleableSparseArray.keyAt(i), bundleableSparseArray.valueAt(i).toBundle());
}
return sparseArray;
}
/**
* Sets the application class loader to the given {@link Bundle} if no class loader is present.
*
* <p>This assumes that all classes unparceled from {@code bundle} are sharing the class loader of
* {@code BundleableUtils}.
*/
public static void ensureClassLoader(@Nullable Bundle bundle) {
if (bundle != null) {
bundle.setClassLoader(castNonNull(BundleableUtil.class.getClassLoader()));
}
}
private BundleableUtil() {}
}