Skip to content
Branch: master
Find file History
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Permalink
Type Name Latest commit message Commit time
..
Failed to load latest commit information.
.google
Application
gradle/wrapper
screenshots
README.md
build.gradle
gradle.properties
gradlew
gradlew.bat
settings.gradle

README.md

Android ElevationBasic Sample

This sample demonstrates ways to move a view in the z-axis using setTranslationZ(). This method was introduced in API Level 21 ('Lollipop').

Introduction

This sample uses two shapes, a circle and a square, and it demonstrates two alternative ways to move a view in the z-axis. The first shape, the circle, has a fixed elevation, which is defined in XML. The second view, the square, changes its elevation using setTranslationZ() when a user touches it:

shape2.setOnTouchListener(new View.OnTouchListener() {
    @Override
    public boolean onTouch(View view, MotionEvent motionEvent) {
        int action = motionEvent.getActionMasked();
        /* Raise view on ACTION_DOWN and lower it on ACTION_UP. */
        switch (action) {
            case MotionEvent.ACTION_DOWN:
                Log.d(TAG, "ACTION_DOWN on view.");
                view.setTranslationZ(120);
                break;
            case MotionEvent.ACTION_UP:
                Log.d(TAG, "ACTION_UP on view.");
                view.setTranslationZ(0);
                break;
            default:
                return false;
        }
        return true;
    }
});

The elevation reverts back once the touch is removed.

Pre-requisites

  • Android SDK 28
  • Android Build Tools v28.0.3
  • Android Support Repository

Screenshots

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.

Support

If you've found an error in this sample, please file an issue: https://github.com/android/user-interface

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

You can’t perform that action at this time.