OnScreenResultListener.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 androidx.annotation.Nullable;
/** A listener to provide the result set by a {@link Screen}. */
public interface OnScreenResultListener {
/**
* Provides the {@code result} from the {@link Screen} that was pushed using {@link
* ScreenManager#pushForResult}, or {@code null} if no result was set.
*
* <p>This callback will be called right before the
* {@link androidx.lifecycle.Lifecycle.State}
* of the {@link Screen} that set the {@code result} becomes {@link
* androidx.lifecycle.Lifecycle.State#DESTROYED}.
*
* @param result the result provided by the {@link Screen} that was pushed using {@link
* ScreenManager#pushForResult} or {@code null} if no result was set
* @see Screen#setResult
*/
void onScreenResult(@Nullable Object result);
}