Mobile and Offline Developer Guide

Mobile App Development with Lightning Web Components and LWC Offline
Create Mobile-Ready Components
Use Mobile Device Features in Mobile Apps
Offline Considerations and Limitations
Offline Environment Details
Use Salesforce Features While Offline
Development Tools and Processes
Understand the Mobile Development Cycle
Set Up Your Development Environment
Preview Components on Mobile
Validate Lightning Web Components for Offline Use
Develop Offline-Ready LWCs with the LWC Offline Test Harness
Test Harness Overview
Test Harness Home Tab
Test Harness SObjects Tab
Test Harness Drafts Tab
Install the Test Harness App
Use the Test Harness App
Debug Lightning Web Components
Debug Mobile Components
Customize the Offline Experience for the Salesforce Mobile App
Quick Start Tutorials
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Test Harness Drafts Tab

The Drafts tab of the Test Harness app is a developer-centric tool for controlling and examining the contents of the Offline Queue, including drafts you’ve created while offline.

The Drafts tab displays the Draft Control card at the top, and then a list of the drafts currently in the Offline Queue. Tap a draft item to see the JSON data representation of the draft.

Drafts tab of the Test Harness app, showing Offline Queue management tools, and the contents of the queue Draft item view showing the JSON representation of a draft operation

Draft Control allows you to start and stop the Offline Queue. This allows you to perform actions while online, such as creating or editing a record, while giving you a chance to inspect the results before they’re uploaded to the Salesforce service. The Draft Control card only allows you to start and stop the queue, and see how many drafts are currently waiting in the queue.

The Test Harness app starts with the Offline Queue in a paused state. Drafts you create while the queue is paused wait in the Offline Queue until you tap Start Queue. When the queue is running, the button label changes to Stop Queue. If an error occurs while uploading a draft, the queue is paused automatically.

Draft records in the Offline Queue are listed in the order they were created. They are local-only data, until you start the Offline Queue to upload the draft records to the Salesforce service.

Each item in the list can be more correctly described as representing a draft operation, or instructions for applying changes, either to create a new record or modify an existing one. The representation therefore includes details of what the operation is, and data for the record before and after the operation is applied.

Documentation regarding the format and interpretation of draft records is forthcoming.

Note

The Edit menu allows you to Copy the JSON representation of the draft into your clipboard. Copying can be useful for pasting into a code editor for detailed examination. You can also Delete the draft from the queue.