CODEWITHSUNDEEP
androidbroadcastreceiversensorsandroid-sensors
Hanuman
Hanuman

Reputation: 968

How i will detect motion sensor in broadcast receiver?

I had written one receiver to detect device motion is changed or not like this in Manifest.xml

 <receiver android:name="com.hanuman.sensor.receiver.SensorReceiver" >
            <intent-filter
                android:enabled="true"
                android:exported="false" >
                <action android:name="android.intent.action.USER_PRESENT" />
            </intent-filter>
        </receiver>

and inside receiver onReceive() method code is:

String action = intent.getAction();
        if (action.equals(Intent.ACTION_USER_PRESENT)) {
            System.out.println("User is present");
            Intent s = new Intent(context, MainActivity.class);
            s.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(s);
        } else {
            System.out.println("User is not present");
        }

finally my question is, is not detecting the sensor when it is motioned, it is detecting when my device in unlocked then it is calling my MainActivity, but i want to detect when my device motion is changed then i want to detect in receiver. How can i do that?.

Upvotes: 20

Views: 4248

Answers (2)

Lakhwinder Singh
Lakhwinder Singh

Reputation: 7209

You cannot and you should not do that, because when the screen goes off the sensor's gone off automatically, this is done by the system in most of the devices, some devices support sensors listening after the screen goes off like nexus 4.But you can create the receivers that will listen to screen off and screen on.

public class Screen extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
            screenOn();
        }
        if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
            screenOff();
        }

    }


    IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction(Intent.ACTION_SCREEN_OFF);
    intentFilter.addAction(Intent.ACTION_SCREEN_ON);
    mReceiver = new Screen();
    registerReceiver(mReceiver, intentFilter);

Upvotes: 1

Mohit Rajput
Mohit Rajput

Reputation: 449

Get object of SensorManager like below-

SensorManager sensorMan = (SensorManager)getSystemService(SENSOR_SERVICE);

Sensor sensor = sensorMan.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);

Register listener to listen changes in motion sensor-

sensorMan.registerListener(context, sensor,
        SensorManager.SENSOR_DELAY_UI);

Then override onSensorChanged() method to detect changes-

@Override
public void onSensorChanged(SensorEvent event) {
    if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER){
    //do some stuff
    }
    //do some other code for other Sensor type
    }

Upvotes: 10

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