Courtesy: GitHub

Android ClippingBasic Sample

A basic app showing how to clip on a View using ViewOutlineProvider interface, by which a View builds its outline, used for shadowing and clipping.


The ViewOutlineProvider interface offers you a method to populate the outline of a View. You need to implement a getOutline(android.view.View, method to clip a View in a specific shape.

This example clips the outline of a View as a rounded rectangle by defining a class that implements ViewOutlineProvider by following code:

private class ClipOutlineProvider extends ViewOutlineProvider {
    public void getOutline(View view, Outline outline) {
        final int margin = Math.min(view.getWidth(), view.getHeight()) / 10;
        outline.setRoundRect(margin, margin, view.getWidth() - margin,
                view.getHeight() - margin, margin / 2);

To clip a View by the defined outline, setting a OutlineProvider to a View to be clipped is needed like following:

final View clippedView = view.findViewById(;

You can toggle if the View is clipped by calling setClipToOutline(boolean) like following code:

clippedView.setClipToOutline(true); // Setting false disable clipping


  • Android SDK 26
  • Android Build Tools v26.0.1
  • Android Support Repository


Screenshot Screenshot

Getting Started

This sample uses the Gradle build system. To build this project, use the "gradlew build" command or use "Import Project" in Android Studio.


If you've found an error in this sample, please file an issue:

Patches are encouraged, and may be submitted by forking this project and submitting a pull request through GitHub. Please see for more details.


Copyright 2017 The Android Open Source Project, Inc.

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you 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

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.

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compileSdkVersion 26

minSdkVersion 21

targetSdkVersion 26


versionCode 1

versionName 1.0


versionCode 1

versionName 1.0



A simple launcher activity containing a summary sample description, sample log and a custom {@link} which can display a view.

For devices with displays with a width of 720dp or greater, the sample log is always visible, on other devices it's visibility is controlled by an item on the Action Bar.

Create a chain of targets that will receive log data