Glass UI SDK

Version: 1.6.2

1. Introduction to UI SDK

1.1 Overview

This SDK provides a set of basic UI libraries for developing applications on Rokid Glass, and currently supports the following items:

1. GlassButton
Custom button of Glass

2. GlassDialog
Provides a series of commonly used dialog boxes

3. Screen adaptation
Screen adaptation scheme, which can keep the UI uniformly and proportionally displayed on Rokid Glass

4. GlassAlignment
Due to the unique screen display characteristics of AR glasses, such as optical see through. In order to guarantee a good experience, when developing recognition applications on glasses,
we recommended that you do not display the camera preview. Then perform an alignment mapping of the calibration content which will be displayed after recognition. This ensures that the calibration content seen by the human eye is fixed on the real object.

5. IMU view
Provides a control which automatically scrolls a list horizontally according to the head's movement

2. Integration procedure

Add a dependency called jcenter to build.gradle in the project:

allprojects {
    repositories {

2.1 Gradle dependencies

In the /app/build.gradle file of the project, add the following dependencies:

dependencies {
    implementation ''

2.2 Demo download

download demo

3. Function list

3.1 GlassButton

Custom button of Glass



3.1.1 Usage

    android:text="Custom Dialog"
    app:layout_constraintTop_toBottomOf="@id/dialog_btn" />

3.2 GlassDialog

A series of commonly used dialog boxes are provided, and different types of dialog boxes can be constructed through Builders. Builder provided currently:

3.2.1 CommonDialogBuilder

Generic DialogBuilder

method Meaning Remarks
setTitle Set title
setContent Set the layout of content or custom content
setConfirmText Set the confirm button text
setCancelText Set the cancel button text
setContentLayoutId Set the id of custom content layout
setContentLayoutView Set the view of custom content layout or the id of custom content layout
setConfirmListener Set Confirm listener
setCancelListener Set Cancel listener

Sample code

new GlassDialog.CommonDialogBuilder(this)
        .setConfirmListener(new GlassDialogListener() {
            public void onClick(View view) {

        .setCancelListener(new GlassDialogListener() {
            public void onClick(View view) {


3.3 Screen adaptation

Declare the following in AndroidManifest.xml of app:


The parameters are configured according to the size of the design drawing, based on width or height. The default benchmark is width.

Simulator preview settings

3.4 GlassAlignment

  • Concept of alignment:

    • The mapping process when camera preview interface enters human eyes through the Glass display screen.
  • Develop on the mobile as shown below:

  • Develop on the glasses as shown below:

  1. Blue represents the image of camera preview
  2. Green represents the coordinates of the object in the camera preview
  3. Orange represents the mapping area of the LCD screen in the camera preview. The percentage represents the proportion of the real world in the virtual world
  4. White represents the object mapped to the display area of the LCD screen

3.4.1 getAlignmentRect

Note: Get the area mapped to the LCD screen according to the rect of preview.

public static Rect getAlignmentRect (final int previewWidth, final int previewHeight, final Rect previewRect)
Parameter Meaning Default value
previewWidth Width of camera preview
previewHeight Height of camera preview
previewRect Camera preview的Rect

Sample code: After face recognition, draw a face Rect on the screen

public static final int PREVIEW_WIDTH = 1280;
public static final int PREVIEW_HEIGHT = 720;

// face area of camera preview
Rect previewRect = faceDoCache.faceDo.toRect(getWidth(), getHeight());

//According to the face Rect of preview, map and then get the Rect that is finally drawn on the screen
Rect rect = RokidSystem.getAlignmentRect(PREVIEW_WIDTH, PREVIEW_HEIGHT,previewRect);

canvas.translate((rect.left + rect.right) / 2f, ( + rect.bottom) / 2f);

3.4.2 getWindowRect

Note: According to the rect of the LCD screen, get the rect of preview area

public static Rect getWindowRect(final int previewWidth, final int previewHeight, final Rect windowRect)
Parameter Meaning Default value
previewWidth Width of camera preview
previewHeight Height of camera preview
windowRect Rect of LCD screen

3.4.3 getProjectionMatrix_OpticalSeeThrough

Note: Obtain the projection matrix of OpenGLES 3D application in the OpticalSeeThrough scene and horizontal screen state. In result, the calibration content seen by the human eye is aligned with the real world

public static float[] getProjectionMatrix_OpticalSeeThrough()

Sample code: For horizontal screen applications, get the projection matrix of the OpenGLES MVP matrix

float projectionMatrix[] = RokidSystem.getProjectionMatrix_OpticalSeeThrough();

3.5 IMU view

  • IMU view control: Provide a list control that can auto scroll horizontally by turning the header left and right. Developers can quickly use the head control and quick swipe function.
  • If the user opens the header control and quick swipe function in the system settings, IMU view control will take effect.

3.5.1 Sample usage

3.5.2 Usage

Initialize in application:
getLifecycle().addObserver(mImuView);//Lifecycle binding
mImuView.setSlow();//The default setting is fast sliding mode, and can be set to slow sliding mode
        app:imutouchstyle="true" />
Property configuration Meaning
imuscale Configure the zoom ratio of the selected item
imupadding Configure the space filled in the item to reserve zoom space
imuspeed Configure the sliding speed of the uniform sliding mode
imuguide Configure whether to display the top navigation bar or not
imuunable The default setting is false, setting it to true will block the header control function of imu
imutitlewidth Configure the width of the title in default display template
imulabmarginleft Configure the position of upper left corner to prompt the distance between the lab and the left boundary
imulabmargintop Configure the position of upper left corner to prompt the distance between the lab and the upper boundary
imutouchstyle Provide two sliding modes true: simulate touch sliding mode false: uniform sliding mode
imutouchinterval Configure the sliding speed of the simulated touch sliding mode
<declare-styleable name="imuview">
    <attr name="imuscale" format="float"/>
    <attr name="imupadding" format="dimension" />
    <attr name="imuspeed" format="integer" />
    <attr name="imuguide" format="boolean" />
    <attr name="imuunable" format="boolean" />
    <attr name="imutitlewidth" format="dimension" />
    <attr name="imulabmarginleft" format="dimension" />
    <attr name="imulabmargintop" format="dimension" />
    <attr name="imutouchstyle" format="boolean" />
    <attr name="imutouchinterval" format="dimension" />

3.5.3 Sliding mode selection

  • Configuration method: Configure through imutouchstyle attribute.
  • Uniform sliding mode: The list slides at a constant speed, and each item will not have a pause effect. It is mostly used for fast scrolling of content, such as gallery.
  • Simulated touch sliding mode: Simulate the effect of manual touch sliding. After each item, there will be a pause effect, which is easy for users to see. It is the default sliding mode.
  • You can register the type of rotation vector sensor of SensorManager.getDefaultSensor(Sensor.TYPE_GAME_ROTATION_VECTOR), and obtain the real-time orientation in the callback of onSensorChanged(SensorEvent event). According to the difference of each callback, judge the current header control state and do corresponding processing.
  • Android official website address:

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