Expressive Pull to Refresh

A Material Design 3 Expressive Pull-to-Refresh component for Android. Provides two distinct indicator styles with smooth animations, haptic feedback, and seamless integration for all scrollable views.

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🎨 Features

• Two Indicator Styles

  • STYLE_UNCONTAINED - Minimal indicator without background
  • STYLE_CONTAINED - Full indicator with background and shadow

• Material Design 3 - Full support for Material 3 theming and dynamic colors

• Nested Scrolling - Compatible with:

  • RecyclerView
  • ListView
  • WebView
  • ScrollView

• Haptic Feedback - Tactile response when refresh threshold is reached

• Smooth Animations - Decelerate interpolation for natural motion

• Runtime Style Switching - Change indicator styles dynamically

• Automatic State Restoration - Automatically preserves refreshing state during configuration changes (e.g., rotation)

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🎬 Preview

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📦 Installation

JitPack Dependency

1. Add JitPack repository to your root build.gradle or settings.gradle:

dependencyResolutionManagement {
    repositories {
        google()
        mavenCentral()
        maven { url 'https://jitpack.io' }
    }
}

2. Add the dependency to your app-level build.gradle:

dependencies {
    implementation 'com.github.Netsnake-TN:ExpressivepullToRefresh:v1.0.5'
}

Required Dependencies

This library uses Material Components 1.14+ for the LoadingIndicator component. Make sure your project includes:

dependencies {
    implementation 'com.google.android.material:material:1.14.0-alpha09'
    implementation 'androidx.core:core:1.16.0'
}

Requirements

• Minimum SDK: 26 (Android 8.0)
• Target SDK: 36
• Compile SDK: 36

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🚀 Usage

XML Layout

Wrap your scrollable view with ExpressivePullToRefresh:

<?xml version="1.0" encoding="utf-8"?>
<com.expressive.refresh.ExpressivePullToRefresh
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/pull_to_refresh"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</com.expressive.refresh.ExpressivePullToRefresh>

Set Up Refresh Listener

ExpressivePullToRefresh pullToRefresh = findViewById(R.id.pull_to_refresh);

pullToRefresh.setOnRefreshListener(() -> {
    // Perform your refresh operation here
    loadDataFromServer();
    
    // Stop refreshing when done
    pullToRefresh.setRefreshing(false);
});

Simulate Refresh State

// Start refreshing programmatically
pullToRefresh.setRefreshing(true);

// Stop refreshing
pullToRefresh.setRefreshing(false);

// Check if currently refreshing
boolean isRefreshing = pullToRefresh.isRefreshing();

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🎯 Indicator Styles

Set Style Programmatically

// Uncontained style (no background)
pullToRefresh.setIndicatorStyle(ExpressivePullToRefresh.STYLE_UNCONTAINED);

// Contained style (with background and shadow)
pullToRefresh.setIndicatorStyle(ExpressivePullToRefresh.STYLE_CONTAINED);

// Get current style
int currentStyle = pullToRefresh.getIndicatorStyle();

Set Style in XML

<com.expressive.refresh.ExpressivePullToRefresh
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/pull_to_refresh"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:type="uncontained">

    <!-- Your scrollable content -->

</com.expressive.refresh.ExpressivePullToRefresh>

Available values:

• app:type="uncontained" - Minimal indicator
• app:type="contained" - Full indicator with background

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🎨 Customization

Material 3 Theming

The component automatically adapts to your app's Material 3 theme:

• Uncontained: Uses colorPrimary from your theme
• Contained: Uses colorOnPrimaryContainer from your theme

Enable dynamic colors for automatic adaptation to system themes:

// In your Activity or Application class
DynamicColors.applyToActivitiesIfAvailable(this);

Theme Example

<style name="AppTheme" parent="Theme.Material3Expressive.DayNight.NoActionBar">
    <item name="colorPrimary">#6750A4</item>
    <item name="colorPrimaryContainer">#EADDFF</item>
    <item name="colorOnPrimaryContainer">#21005D</item>
</style>

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📚 Complete Example

RecyclerView with Pull-to-Refresh

Layout (fragment_recycler_view.xml):

<?xml version="1.0" encoding="utf-8"?>
<com.expressive.refresh.ExpressivePullToRefresh
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/pull_to_refresh"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:clipToPadding="false"
        android:padding="8dp" />

</com.expressive.refresh.ExpressivePullToRefresh>

Fragment (RecyclerViewFragment.java):

public class RecyclerViewFragment extends Fragment {

    private ExpressivePullToRefresh pullToRefresh;
    private RecyclerView recyclerView;
    private MyDataAdapter adapter;
    private List<MyData> items = new ArrayList<>();

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_recycler_view, container, false);
    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        pullToRefresh = view.findViewById(R.id.pull_to_refresh);
        recyclerView = view.findViewById(R.id.recycler_view);

        // Setup RecyclerView
        recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
        adapter = new MyDataAdapter(items);
        recyclerView.setAdapter(adapter);

        // Setup Pull-to-Refresh
        pullToRefresh.setOnRefreshListener(this::refreshData);
    }

    private void refreshData() {
        // Simulate network delay
        pullToRefresh.postDelayed(() -> {
            // Load new data
            loadData();
            
            // Stop refreshing
            pullToRefresh.setRefreshing(false);
        }, 2000);
    }

    private void loadData() {
        items.clear();
        for (int i = 0; i < 30; i++) {
            items.add(new MyData("Item " + (i + 1)));
        }
        adapter.notifyDataSetChanged();
    }
}

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🔧 API Reference

Methods

Method	Description
setOnRefreshListener(OnRefreshListener listener)	Set callback for refresh events
setRefreshing(boolean refreshing)	Programmatically start/stop refresh
setRefreshing(boolean refreshing, boolean notify)	Start/stop with optional callback trigger
isRefreshing()	Check current refresh state
setIndicatorStyle(int style)	Set indicator style (UNCONTAINED/CONTAINED)
getIndicatorStyle()	Get current indicator style

Constants

Constant	Value	Description
STYLE_UNCONTAINED	0	Indicator without background
STYLE_CONTAINED	1	Indicator with background

Callback Interface

public interface OnRefreshListener {
    void onRefresh();
}

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📄 License

Copyright 2026

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.