androidx.lifecycle.Observer Maven / Gradle / Ivy
/*
* 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 androidx.lifecycle;
import androidx.annotation.Nullable;
/**
* A simple callback that can receive from {@link LiveData}.
*
* @param The type of the parameter
*
* @see LiveData LiveData - for a usage description.
*/
public interface Observer {
/**
* Called when the data is changed.
* @param t The new data
*/
void onChanged(@Nullable T t);
}