Example usage for android.bluetooth BluetoothAdapter ACTION_CONNECTION_STATE_CHANGED

Introduction

In this page you can find the example usage for android.bluetooth BluetoothAdapter ACTION_CONNECTION_STATE_CHANGED.

Prototype

String ACTION_CONNECTION_STATE_CHANGED

To view the source code for android.bluetooth BluetoothAdapter ACTION_CONNECTION_STATE_CHANGED.

Click Source Link

Document

Intent used to broadcast the change in connection state of the local Bluetooth adapter to a profile of the remote device.

Usage

From source file:com.android.dragonkeyboardfirmwareupdater.KeyboardFirmwareUpdateService.java

private static IntentFilter makeIntentFilter() {
    IntentFilter intentFilter = new IntentFilter();

    intentFilter.addAction(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED);
    intentFilter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
    intentFilter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED);
    intentFilter.addAction(ACTION_KEYBOARD_UPDATE_CONFIRMED);
    intentFilter.addAction(ACTION_KEYBOARD_UPDATE_POSTPONED);

    return intentFilter;
}

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From source file:com.android.dragonkeyboardfirmwareupdater.KeyboardFirmwareUpdateService.java

/**
 * Handles intents ACTION_CONNECTION_STATE_CHANGED, ACTION_STATE_CHANGED,
 * ACTION_BOND_STATE_CHANGED, ACTION_KEYBOARD_UPDATE_CONFIRMED.
 * <p/>//w w w.  j av  a 2 s .  c  om
 * [ACTION_STATE_CHANGED]
 * This action is used to keep track of ON/OFF state change on the system Bluetooth adapter.
 * The
 * purpose is to synchronize the local Bluetooth connectivity with system Bluetooth state.
 * <p/>
 * [ACTION_CONNECTION_STATE_CHANGED]
 * This action is used to keep track of the connection change on the target device. The purpose
 * is to synchronize the connection cycles of the local GATT connection and the system
 * Bluetooth
 * connection.
 * <p/>
 * [ACTION_BOND_STATE_CHANGED]
 * This action is used to keep track of the bond state change on the target device. The purpose
 * is to the connection cycles of the local GATT connection and the system Bluetooth
 * connection.
 * <p/>
 * [ACTION_KEYBOARD_UPDATE_CONFIRMED]
 * This action is used to receive the update confirmation from the user. The purpose is to
 * trigger DFU process.
 */
private void onHandleIntent(Context context, Intent intent) {
    final String action = intent.getAction();
    Log.d(TAG, "onHandleIntent: Received action: " + action);

    if (BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED.equals(action)) {

        if (!isBluetoothEnabled()) {
            Log.w(TAG, "onHandleIntent: Bluetooth connectivity not enabled");
            return;
        }

        // Match the connected device with the default keyboard name.
        Bundle extras = intent.getExtras();
        if (extras == null)
            return;
        final BluetoothDevice device = extras.getParcelable(BluetoothDevice.EXTRA_DEVICE);
        final int deviceConnectionState = extras.getInt(BluetoothAdapter.EXTRA_CONNECTION_STATE);

        Log.d(TAG, "onHandleIntent: " + device.getName() + " [" + device.getAddress() + "] change to state: "
                + deviceConnectionState);

        // Match the name of the target keyboard.
        if (!isTargetKeyboard(device))
            return;

        if (deviceConnectionState == BluetoothAdapter.STATE_CONNECTED) {
            // Prevent the second keyboard from using the service.
            if (isUpdateServiceInUse())
                return;

            obtainKeyboardInfo(device.getName(), device.getAddress());

            if (mDfuStatus != DFU_STATE_INFO_READY) {
                Log.w(TAG, "onHandleIntent: DFU preparation failed");
                changeDfuStatus(DFU_STATE_OBTAIN_INFO_ERROR);
                return;
            }

            showUpdateNotification();
        } else if (deviceConnectionState == BluetoothAdapter.STATE_DISCONNECTING) {
            handleGattDisconnection();
        }

    } else if (BluetoothAdapter.ACTION_STATE_CHANGED.equals(action)) {
        final int adapterState = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR);
        if (adapterState == BluetoothAdapter.STATE_ON) {
            if (!isBluetoothEnabled())
                enableBluetoothConnectivity();
        } else if (adapterState == BluetoothAdapter.STATE_TURNING_OFF) {
            // Terminate update process and disable Bluetooth connectivity.
            disableBluetoothConnectivity();

            // Since BluetoothAdapter has been disabled, the callback of disconnection would not
            // be called. Therefore a separate clean-up of GATT connection is need.
            cleanUpGattConnection();
        }

    } else if (BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(action)) {
        Bundle extras = intent.getExtras();
        if (extras == null)
            return;
        final BluetoothDevice device = extras.getParcelable(BluetoothDevice.EXTRA_DEVICE);
        final int deviceBondState = extras.getInt(BluetoothDevice.EXTRA_BOND_STATE);

        Log.d(TAG, "onHandleIntent: state change on device " + device.getName() + " [" + device.getAddress()
                + "], bond state: " + deviceBondState);

        if (!isTargetKeyboard(device))
            return;

        if (deviceBondState == BluetoothDevice.BOND_NONE) {
            handleGattDisconnection();
        }

    } else if (ACTION_KEYBOARD_UPDATE_CONFIRMED.equals(action)) {
        dismissUpdateNotification();

        if (mDfuStatus != DFU_STATE_INFO_READY || mDfuStatus == DFU_STATE_UPDATING) {
            Log.w(TAG, "onHandleIntent: DFP preparation not ready or DFU is in progress. ");
            changeDfuStatus(DFU_STATE_UPDATE_ABORTED);
            return;
        }

        String keyboardName = intent.getStringExtra(EXTRA_KEYBOARD_NAME);
        String keyboardAddress = intent.getStringExtra(EXTRA_KEYBOARD_ADDRESS);
        if (!mKeyboardName.equals(keyboardName) || !mKeyboardAddress.equals(keyboardAddress)) {
            Log.w(TAG, "onHandleIntent: No DFU service associated with " + keyboardName + " [" + keyboardAddress
                    + "]");
            return;
        }

        Log.d(TAG, "onHandleIntent: Start update process on " + keyboardName + " [" + keyboardAddress + "]");
        changeDfuStatus(DFU_STATE_SWITCHING_TO_DFU_MODE);

    } else if (ACTION_KEYBOARD_UPDATE_POSTPONED.equals(action)) {
        dismissUpdateNotification();
        // TODO(mcchou): Update the preference when the Settings keyboard entry is available.
    }
}

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