Starting March 27, 2025, we recommend using android-latest-release instead of aosp-main to build and contribute to AOSP. For more information, see Changes to AOSP.
Overview
Stay organized with collections
Save and categorize content based on your preferences.
Dialer is an Android system application that provides a distraction-optimized (DO)
experience for Bluetooth calling, contact browsing, and call management. A fully functional
implementation of Dialer is provided in the Android Open Source Project (AOSP). This
implementation can be used as is or with a customized visual theme.
Figure 1. Dialer portrait and landscape modes
Terminology
These terms are used throughout this section:
-
Android Open Source Project (AOSP). An open source operating
system for mobile devices and a corresponding open source project led by Google.
-
Distraction Optimized (DO). User flow that adheres to User Experience
Restrictions (UXR) and that is safe during driving.
-
Heads Up Notification (HUN). An incoming notification that
appears on a display.
-
User Experience Restrictions (UXR). Applications that display a
user interface dependent upon driving state must adhere to UXR.
-
User Interface (UI). The means by which users control
interactions with applications.
-
Vehicle Optimized (VO). User flow that is not required to follow
UXR and is not considered safe during driving, but that has been optimized for use
in a car.
Purpose
This section explains how to build a fully-compliant Android UXR telecom system with
Android Automotive.
Features
Dialer provides these capabilities:
| State |
Capability |
Task |
While driving,
Distraction Optimized features |
Bluetooth calling |
- Make a call from the dialpad.
- Make a call from the Contact list.
- Make a call from the Recent Call list.
- Make a call from the Contact Detail page.
- Receive an incoming call through a heads up notification and then respond.
- Return a missed call from the Notification center.
- Call management, Pause, Mute, Hold, Swap, and Set Audio Route.
|
| Contact and call log browsing |
- Display top-level categories.
- Browse all Favorite contacts.
- Browse the Recent Call list.
- Browse the Contact list.
- View the Contact Details page.
- Navigate to a Contact address.
|
| Search with voice or handwriting (on a keyboard) |
- Show matching search results.
- View the contact details of filtered contacts.
|
| While parked, everything above and: |
Settings |
When safe, users can access Settings to:
- Change the sort order of Contact list.
- Change the start page, which will be effective after the next restart.
|
| Search, using keyboard |
While parked, users can perform searches. |
| Connect to Bluetooth |
If no phones are connected through Bluetooth when parked, users can press the
Connect to Bluetooth button to navigate to the system Bluetooth Settings page to pair
and then connect a device. |
Tasks
This table describes the tasks of each stakeholder.
| Car Manufacturers (OEMs) |
Google |
| Build a fully-compliant Android UXR telecom system with Android Automotive. |
Provide:
- A Dialer implementation in AOSP.
- Documentation for key tasks such as customization and review/certification processes.
|
Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
Last updated 2025-03-13 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-13 UTC."],[],[],null,["# Overview\n\n*Dialer* is an Android system application that provides a distraction-optimized (DO)\nexperience for Bluetooth calling, contact browsing, and call management. A fully functional\nimplementation of Dialer is provided in the Android Open Source Project (AOSP). This\nimplementation can be used as is or with a customized visual theme. \n**Figure 1.** Dialer portrait and landscape modes\n\nTerminology\n-----------\n\nThese terms are used throughout this section:\n\n- **Android Open Source Project (AOSP).** An open source operating\n system for mobile devices and a corresponding open source project led by Google.\n\n- **Distraction Optimized (DO).** User flow that adheres to User Experience\n Restrictions (UXR) and that is safe during driving.\n\n- **Heads Up Notification (HUN).** An incoming notification that\n appears on a display.\n\n- **User Experience Restrictions (UXR).** Applications that display a\n user interface dependent upon driving state must adhere to UXR.\n\n- **User Interface (UI).** The means by which users control\n interactions with applications.\n\n- **Vehicle Optimized (VO).** User flow that is not required to follow\n UXR and is not considered safe during driving, but that has been optimized for use\n in a car.\n\nPurpose\n-------\n\nThis section explains how to build a fully-compliant Android UXR telecom system with\nAndroid Automotive.\n\nFeatures\n--------\n\nDialer provides these capabilities:\n\n| State | Capability | Task |\n|------------------------------------------------------|--------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| While ***driving*** , Distraction Optimized features | Bluetooth calling | - Make a call from the dialpad. - Make a call from the Contact list. - Make a call from the Recent Call list. - Make a call from the Contact Detail page. - Receive an incoming call through a heads up notification and then respond. - Return a missed call from the Notification center. - Call management, Pause, Mute, Hold, Swap, and Set Audio Route. |\n| While ***driving*** , Distraction Optimized features | Contact and call log browsing | - Display top-level categories. - Browse all Favorite contacts. - Browse the Recent Call list. - Browse the Contact list. - View the Contact Details page. - Navigate to a Contact address. |\n| While ***driving*** , Distraction Optimized features | Search with voice or handwriting (on a keyboard) | - Show matching search results. - View the contact details of filtered contacts. |\n| While ***parked*** , everything above *and*: | Settings | When safe, users can access Settings to: - Change the sort order of Contact list. - Change the start page, which will be effective after the next restart. |\n| While ***parked*** , everything above *and*: | Search, using keyboard | While parked, users can perform searches. |\n| While ***parked*** , everything above *and*: | Connect to Bluetooth | If no phones are connected through Bluetooth when parked, users can press the Connect to Bluetooth button to navigate to the system Bluetooth Settings page to pair and then connect a device. |\n\nTasks\n-----\n\nThis table describes the tasks of each stakeholder.\n\n| Car Manufacturers (OEMs) | Google |\n|-----------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------|\n| Build a fully-compliant Android UXR telecom system with Android Automotive. | Provide: - A Dialer implementation in AOSP. - Documentation for key tasks such as customization and review/certification processes. |"]]
