NavBackStackEntryState.java
/*
* Copyright 2019 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.navigation;
import android.annotation.SuppressLint;
import android.os.Bundle;
import android.os.Parcel;
import android.os.Parcelable;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import java.util.UUID;
@SuppressLint("BanParcelableUsage")
final class NavBackStackEntryState implements Parcelable {
private final UUID mUUID;
private final int mDestinationId;
private final Bundle mArgs;
private final Bundle mSavedState;
NavBackStackEntryState(NavBackStackEntry entry) {
mUUID = entry.mId;
mDestinationId = entry.getDestination().getId();
mArgs = entry.getArguments();
mSavedState = new Bundle();
entry.saveState(mSavedState);
}
@SuppressWarnings("WeakerAccess")
NavBackStackEntryState(Parcel in) {
mUUID = UUID.fromString(in.readString());
mDestinationId = in.readInt();
mArgs = in.readBundle(getClass().getClassLoader());
mSavedState = in.readBundle(getClass().getClassLoader());
}
@NonNull
UUID getUUID() {
return mUUID;
}
int getDestinationId() {
return mDestinationId;
}
@Nullable
Bundle getArgs() {
return mArgs;
}
@NonNull
Bundle getSavedState() {
return mSavedState;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(@NonNull Parcel parcel, int i) {
parcel.writeString(mUUID.toString());
parcel.writeInt(mDestinationId);
parcel.writeBundle(mArgs);
parcel.writeBundle(mSavedState);
}
public static final Parcelable.Creator<NavBackStackEntryState> CREATOR =
new Parcelable.Creator<NavBackStackEntryState>() {
@Override
public NavBackStackEntryState createFromParcel(Parcel in) {
return new NavBackStackEntryState(in);
}
@Override
public NavBackStackEntryState[] newArray(int size) {
return new NavBackStackEntryState[size];
}
};
}