HandshakeInfo.java
/*
* Copyright 2020 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.car.app;
import static java.util.Objects.requireNonNull;
import androidx.annotation.Keep;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.car.app.annotations.CarProtocol;
/**
* A container for the information conveyed by the host after the handshake with the app is
* completed.
*/
@CarProtocol
public final class HandshakeInfo {
@Keep
@Nullable
private final String mHostPackageName;
@Keep
private final int mHostCarAppApiLevel;
/**
* Creates an instance of {@link HandshakeInfo}.
*
* @param hostPackageName the host package name
* @param hostCarAppApiLevel the API level that should be used to communicate with the host
*/
public HandshakeInfo(@NonNull String hostPackageName, int hostCarAppApiLevel) {
mHostPackageName = hostPackageName;
mHostCarAppApiLevel = hostCarAppApiLevel;
}
// Used for serialization
private HandshakeInfo() {
mHostPackageName = null;
mHostCarAppApiLevel = 0;
}
/**
* Returns the host package name.
*/
@NonNull
public String getHostPackageName() {
return requireNonNull(mHostPackageName);
}
/**
* Returns the negotiated API level that should be used to communicate with the host.
*/
public int getHostCarAppApiLevel() {
return mHostCarAppApiLevel;
}
}