android support! thanks to TachiWeb devs.

AndroidCompat/src/main/java/android/content/pm/VersionedPackage.java

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+/*
+ * Copyright (C) 2017 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 android.content.pm;
+import android.annotation.IntRange;
+import android.annotation.NonNull;
+import android.os.Parcel;
+import android.os.Parcelable;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+/**
+ * Encapsulates a package and its version code.
+ */
+public final class VersionedPackage implements Parcelable {
+    private final String mPackageName;
+    private final int mVersionCode;
+    /** @hide */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntRange(from = PackageManager.VERSION_CODE_HIGHEST)
+    public @interface VersionCode{}
+    /**
+     * Creates a new instance. Use {@link PackageManager#VERSION_CODE_HIGHEST}
+     * to refer to the highest version code of this package.
+     * @param packageName The package name.
+     * @param versionCode The version code.
+     */
+    public VersionedPackage(@NonNull String packageName,
+            @VersionCode int versionCode) {
+        mPackageName = packageName;
+        mVersionCode = versionCode;
+    }
+    private VersionedPackage(Parcel parcel) {
+        mPackageName = parcel.readString();
+        mVersionCode = parcel.readInt();
+    }
+    /**
+     * Gets the package name.
+     *
+     * @return The package name.
+     */
+    public @NonNull String getPackageName() {
+        return mPackageName;
+    }
+    /**
+     * Gets the version code.
+     *
+     * @return The version code.
+     */
+    public @VersionCode int getVersionCode() {
+        return mVersionCode;
+    }
+    @Override
+    public String toString() {
+        return "VersionedPackage[" + mPackageName + "/" + mVersionCode + "]";
+    }
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+    @Override
+    public void writeToParcel(Parcel parcel, int flags) {
+        parcel.writeString(mPackageName);
+        parcel.writeInt(mVersionCode);
+    }
+    public static final Creator<VersionedPackage> CREATOR = new Creator<VersionedPackage>() {
+        @Override
+        public VersionedPackage createFromParcel(Parcel source) {
+            return new VersionedPackage(source);
+        }
+        @Override
+        public VersionedPackage[] newArray(int size) {
+            return new VersionedPackage[size];
+        }
+    };
+}