ProtoLayoutExtensionViewProvider.java
package androidx.wear.protolayout.renderer;
/*
* Copyright 2023 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.
*/
import android.view.View;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RestrictTo;
/**
* View provider for a View ExtensionLayoutElement. This should check that the given renderer
* extension ID matches the expected renderer extension ID, then return a View based on the given
* payload. The returned View will be measured using the width/height from the {@link
* androidx.wear.protolayout.LayoutElementBuilders.ExtensionLayoutElement} message.
*/
@RestrictTo(RestrictTo.Scope.LIBRARY)
public interface ProtoLayoutExtensionViewProvider {
/**
* Return an Android View from the given renderer extension. In case of an error, this method
* should return null, and not throw any exceptions.
*
* <p>Note: The renderer extension must not set the default tag of the returned View object.
*/
@Nullable
View provideView(@NonNull byte[] extensionPayload, @NonNull String vendorId);
}