Implement Bluetooth MAP in Android ContentProvider

I have a custom SMS Android app. As a new feature I want to display new messages on car entertainment systems that are connected via Bluetooth and support Bluetooth MAP-Protocol. Therefore I need an expert with experience in implementing Bluetooth applications on Android to complete the following task:

Create a Java Class that implements an Android ContentProvider. This ContentProvider shall pushe messages (text strings) to a connected Bluetooth device via MAP protocol (using MessageAccessService and MessageNotificationService). The ContentProvider shall act as a Message Server Equipment (MSE), notifying connected clients of changes as well as allowing clients to query it for available messages. Messages shall have the type GSM-SMS.

Any Android APIs available in Android version 22 or lower can and should be used.

Acceptance criteria:

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- Queries paired bluetooth devices

- Establishes a connection to first device that supports Bluetooth MAP protocol

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- Notify device of new message and allow retrieval

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- Deletes a message from the remote device

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- Pushes update to the message to the remote device

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- Returns a list of all current messages

Every message has the following properties:

- ID type long (values are: 0 <= ID <= 2^20)

- Sender name type string (utf8, length <= 100 characters)

- Message text type string (utf8, length <= 500 characters)

Resources:

See official Android Documentation for ContentProvider: [url removed, login to view]

See official Bluetooth MAP Specification: [url removed, login to view]

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项目ID： #9792479

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