Example usage for android.bluetooth BluetoothAdapter EXTRA_PREVIOUS_STATE

Introduction

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

Prototype

String EXTRA_PREVIOUS_STATE

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

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Document

Used as an int extra field in #ACTION_STATE_CHANGED intents to request the previous power state.

Usage

From source file:is.hello.buruberi.bluetooth.stacks.android.NativeBluetoothStack.java

@Override
@RequiresPermission(allOf = { Manifest.permission.BLUETOOTH, Manifest.permission.BLUETOOTH_ADMIN, })
public Observable<Void> turnOn() {
    if (adapter == null) {
        return Observable.error(new ChangePowerStateException());
    }// w ww  . jav  a  2s.  c om

    final ReplaySubject<Void> turnOnMirror = ReplaySubject.createWithSize(1);
    final BroadcastReceiver receiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            final int oldState = intent.getIntExtra(BluetoothAdapter.EXTRA_PREVIOUS_STATE,
                    BluetoothAdapter.ERROR);
            final int newState = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR);
            if (oldState == BluetoothAdapter.STATE_OFF && newState == BluetoothAdapter.STATE_TURNING_ON) {
                logger.info(LOG_TAG, "Bluetooth turning on");
            } else if (oldState == BluetoothAdapter.STATE_TURNING_ON && newState == BluetoothAdapter.STATE_ON) {
                logger.info(LOG_TAG, "Bluetooth turned on");

                applicationContext.unregisterReceiver(this);

                turnOnMirror.onNext(null);
                turnOnMirror.onCompleted();
            } else {
                logger.info(LOG_TAG, "Bluetooth failed to turn on");

                applicationContext.unregisterReceiver(this);

                turnOnMirror.onError(new ChangePowerStateException());
            }
        }
    };
    applicationContext.registerReceiver(receiver, new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED));
    if (!adapter.enable()) {
        applicationContext.unregisterReceiver(receiver);
        return Observable.error(new ChangePowerStateException());
    }

    return turnOnMirror;
}

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From source file:is.hello.buruberi.bluetooth.stacks.android.NativeBluetoothStack.java

@Override
@RequiresPermission(allOf = { Manifest.permission.BLUETOOTH, Manifest.permission.BLUETOOTH_ADMIN, })
public Observable<Void> turnOff() {
    if (adapter == null) {
        return Observable.error(new ChangePowerStateException());
    }// ww w. j a  v a 2  s  . c o m

    final ReplaySubject<Void> turnOnMirror = ReplaySubject.createWithSize(1);
    final BroadcastReceiver receiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            final int oldState = intent.getIntExtra(BluetoothAdapter.EXTRA_PREVIOUS_STATE,
                    BluetoothAdapter.ERROR);
            final int newState = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR);
            if (oldState == BluetoothAdapter.STATE_ON && newState == BluetoothAdapter.STATE_TURNING_OFF) {
                logger.info(LOG_TAG, "Bluetooth turning off");
            } else if (oldState == BluetoothAdapter.STATE_TURNING_OFF
                    && newState == BluetoothAdapter.STATE_OFF) {
                logger.info(LOG_TAG, "Bluetooth turned off");

                applicationContext.unregisterReceiver(this);

                turnOnMirror.onNext(null);
                turnOnMirror.onCompleted();
            } else {
                logger.info(LOG_TAG, "Bluetooth failed to turn off");

                applicationContext.unregisterReceiver(this);

                turnOnMirror.onError(new ChangePowerStateException());
            }
        }
    };
    applicationContext.registerReceiver(receiver, new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED));
    if (!adapter.disable()) {
        applicationContext.unregisterReceiver(receiver);
        return Observable.error(new ChangePowerStateException());
    }

    return turnOnMirror;
}

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From source file:com.commontime.plugin.LocationManager.java

private void initBluetoothListener() {

    //check access
    if (!hasBlueToothPermission()) {
        debugWarn("Cannot listen to Bluetooth service when BLUETOOTH permission is not added");
        return;//from  w  w  w . ja  v a 2s .c om
    }

    //check device support
    try {
        iBeaconManager.checkAvailability();
    } catch (Exception e) {
        //if device does not support iBeacons an error is thrown
        debugWarn("Cannot listen to Bluetooth service: " + e.getMessage());
        return;
    }

    if (broadcastReceiver != null) {
        debugWarn("Already listening to Bluetooth service, not adding again");
        return;
    }

    broadcastReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            final String action = intent.getAction();

            // Only listen for Bluetooth server changes
            if (action.equals(BluetoothAdapter.ACTION_STATE_CHANGED)) {

                final int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR);
                final int oldState = intent.getIntExtra(BluetoothAdapter.EXTRA_PREVIOUS_STATE,
                        BluetoothAdapter.ERROR);

                debugLog("Bluetooth Service state changed from " + getStateDescription(oldState) + " to "
                        + getStateDescription(state));

                switch (state) {
                case BluetoothAdapter.ERROR:
                    beaconServiceNotifier.didChangeAuthorizationStatus("AuthorizationStatusNotDetermined");
                    break;
                case BluetoothAdapter.STATE_OFF:
                case BluetoothAdapter.STATE_TURNING_OFF:
                    if (oldState == BluetoothAdapter.STATE_ON)
                        beaconServiceNotifier.didChangeAuthorizationStatus("AuthorizationStatusDenied");
                    break;
                case BluetoothAdapter.STATE_ON:
                    beaconServiceNotifier.didChangeAuthorizationStatus("AuthorizationStatusAuthorized");
                    break;
                case BluetoothAdapter.STATE_TURNING_ON:
                    break;
                }
            }
        }

        private String getStateDescription(int state) {
            switch (state) {
            case BluetoothAdapter.ERROR:
                return "ERROR";
            case BluetoothAdapter.STATE_OFF:
                return "STATE_OFF";
            case BluetoothAdapter.STATE_TURNING_OFF:
                return "STATE_TURNING_OFF";
            case BluetoothAdapter.STATE_ON:
                return "STATE_ON";
            case BluetoothAdapter.STATE_TURNING_ON:
                return "STATE_TURNING_ON";
            }
            return "ERROR" + state;
        }
    };

    // Register for broadcasts on BluetoothAdapter state change
    IntentFilter filter = new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED);
    cordova.getActivity().registerReceiver(broadcastReceiver, filter);
}

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