pebble/devsite/source/_changelogs/4.0-dp1.md
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Pebble SDK 4.0-dp1 - Changelog 2016-06-15

This is the first Developer Preview release of the brand new Pebble SDK 4.0. This changelog collects only changes visible to developers using the emulator. A complete changelog will be provided when 4.0 ships on physical watches.

Changes to Firmware

Changes to SDK

  • Added the new "Diorite" platform for the Pebble 2.
  • Added PBL_COMPASS, PBL_SMARTSTRAP_POWER, and PBL_PLATFORM_DIORITE defines.
  • Added preferred_result_display_duration to get the recommended number of milliseconds a result window should be visible before it should closed.
  • Added AppExitReason and exit_reason_set for an application to be able to notify the system of the reason it is exiting.
  • Added AppGlanceSlice, AppGlanceResult, AppGlanceReloadSession, app_glance_add_slice, AppGlanceReloadCallback and app_glance_reload. to support AppGlances.
  • Added Unobstructed Area APIs: UnobstructedAreaWillChangeHandler, UnobstructedAreaChangeHandler, UnobstructedAreaDidChangeHandler, UnobstructedAreaHandlers, layer_get_unobstructed_bounds, unobstructed_area_service_subscribe and unobstructed_area_service_unsubscribe to enable a watchface to adapt to overlays partially obstructing it, such as during a Timeline Peek Quick View.
  • Added HealthMetricAlert, HealthAggregation, health_service_peek_current_value, health_service_peek_current_value, health_service_aggregate_averaged, health_service_aggregate_averaged, health_service_metric_aggregate_averaged_accessible, health_service_register_metric_alert, health_service_register_metric_alert and health_service_cancel_metric_alert in preparation for heart rate support. Note that these are not yet implemented.
  • Report memory usage for Pebble Packages at build time.

Changes to Documentation

Known Issues

  • Creating an AppGlanceSlice with a .expiration_time of APP_GLANCE_SLICE_NO_EXPIRATION_TIME results in an AppGlanceSlice that is never displayed.
  • The UnobstructedAreaHandlers object must be created before being passed into the unobstructed_area_service_subscribe method.
  • The Diorite emulator is still a little shy and will occassionally shake upon starting. If your emulator doesn't stop shaking, try installing an app - that usually brings it out of its shell.