public interface

Observer<T>

 androidx.lifecycle.Observer<T>

Subclasses:

SliceView

Gradle dependencies

compile group: 'androidx.lifecycle', name: 'lifecycle-livedata-core', version: '2.5.0-rc01'

  • groupId: androidx.lifecycle
  • artifactId: lifecycle-livedata-core
  • version: 2.5.0-rc01

Artifact androidx.lifecycle:lifecycle-livedata-core:2.5.0-rc01 it located at Google repository (https://maven.google.com/)

Androidx artifact mapping:

androidx.lifecycle:lifecycle-livedata-core android.arch.lifecycle:livedata-core

Androidx class mapping:

androidx.lifecycle.Observer android.arch.lifecycle.Observer

Overview

A simple callback that can receive from LiveData.

Summary

Methods
public voidonChanged(java.lang.Object t)

Called when the data is changed.

Methods

public void onChanged(java.lang.Object t)

Called when the data is changed.

Parameters:

t: The new data

Source

/*
 * 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;

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