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81 lines
3.7 KiB
Markdown
81 lines
3.7 KiB
Markdown
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---
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# Copyright 2025 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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title: Pebble SDK 4.0-dp1 - Changelog
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date: 2016-06-15
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---
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This is the first Developer Preview release of the brand new Pebble SDK 4.0.
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This changelog collects only changes visible to developers using the emulator.
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A complete changelog will be provided when 4.0 ships on physical watches.
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### Changes to Firmware
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* Added support for [Pebble 2](https://www.kickstarter.com/projects/597507018/pebble-2-time-2-and-core-an-entirely-new-3g-ultra).
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* Added [AppGlances](/guides/user-interfaces/appglance-c/) and Timeline
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~~Peek~~ Quick View.
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### Changes to SDK
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* Added the new "Diorite" platform for the Pebble 2.
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* Added `PBL_COMPASS`, `PBL_SMARTSTRAP_POWER`, and `PBL_PLATFORM_DIORITE`
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defines.
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* Added ``preferred_result_display_duration`` to get the recommended number of
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milliseconds a result window should be visible before it should closed.
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* Added ``AppExitReason`` and ``exit_reason_set``
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for an application to be able to notify the system of
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[the reason it is exiting](/guides/user-interfaces/app-exit-reason/).
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* Added ``AppGlanceSlice``, ``AppGlanceResult``, ``AppGlanceReloadSession``,
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``app_glance_add_slice``, ``AppGlanceReloadCallback`` and ``app_glance_reload``.
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to support [AppGlances](/guides/user-interfaces/appglance-c/).
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* Added [Unobstructed Area APIs](/guides/user-interfaces/unobstructed-area/):
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``UnobstructedAreaWillChangeHandler``,
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``UnobstructedAreaChangeHandler``,
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``UnobstructedAreaDidChangeHandler``,
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``UnobstructedAreaHandlers``,
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``layer_get_unobstructed_bounds``,
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``unobstructed_area_service_subscribe``
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and ``unobstructed_area_service_unsubscribe``
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to enable a watchface to adapt to overlays partially obstructing it, such as
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during a Timeline ~~Peek~~ Quick View.
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* Added ``HealthMetricAlert``, ``HealthAggregation``, ``health_service_peek_current_value``,
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``health_service_peek_current_value``, ``health_service_aggregate_averaged``,
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``health_service_aggregate_averaged``,
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``health_service_metric_aggregate_averaged_accessible``,
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``health_service_register_metric_alert``,
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``health_service_register_metric_alert`` and
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``health_service_cancel_metric_alert`` in preparation for heart rate support.
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Note that these are not yet implemented.
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* Report memory usage for Pebble Packages at build time.
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### Changes to Documentation
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* Added [AppGlances Guide](/guides/user-interfaces/appglance-c/)
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* Added [Unobstructed Area Guide](/guides/user-interfaces/unobstructed-area/)
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* Added [AppExitReason Guide](/guides/user-interfaces/app-exit-reason)
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* Added [One Click Action Guide](/guides/design-and-interaction/one-click-actions/)
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* Added API documentation for new ``HealthService``, ``App Glance``, ``UnobstructedArea`` and ``AppExitReason`` APIs.
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### Known Issues
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* Creating an ``AppGlanceSlice`` with a .expiration_time of
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`APP_GLANCE_SLICE_NO_EXPIRATION_TIME` results in an AppGlanceSlice that is
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never displayed.
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* The ``UnobstructedAreaHandlers`` object must be created before being passed into
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the ``unobstructed_area_service_subscribe`` method.
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* The Diorite emulator is still a little shy and will occassionally shake upon
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starting. If your emulator doesn't stop shaking, try installing an app - that
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usually brings it out of its shell.
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