Broadcastreceiver - how to register for addProximityAlert method

Question

The snippet below has the mission to give a warning to the user if he entered an area of terrain that is a circle around the given geographical coordinates:

double mLatitude=35.41;
double mLongitude=139.46;

float mRadius=500f;

long expiration=-1;

Intent mIntent = new Intent ("Você entrou na área demarcada");

PendingIntent mFireIntent = PendingIntent.getBroadCast(this,-1,mIntent,0);

mLocationManager.addProximityAlert(mLatitude, mLongitude, mRadius, expiration, mFireIntent);

will not work by itself naturally because it is incomplete. Lack instantiation LocationManager and also register the BroadcastReceiver which, from what I understand, works almost like a Listener.

The IntentFilter associated with some action. And this is my problem.

How to register the Broadcastreceiver for the required action, which is triggered by the method addProximityAlert?

I did not find something similar to, for example,

IntentFilter intentFilter = new IntentFilter(Intent.ACTION_CAMERA_BUTTON);
intentFilter.addAction(Intent.ACTION_PACKAGE_ADDED);
registerReceiver(intentReceiver, intentFilter);

who would watch the click of a camera button.

(This object intentReceiver above - in the record of receiver - is the instantiation at another point of the code of a particular class that extended BroadcastReceiver, whose unique method onReceive would filter if there would be such a click on the camera button)

Ali, no IntentFilter parallel to my problem, the watched action is the click on the camera.

How to make a similar one in order to record the effective response of the method addProximityAlert?

Answer 1

When creating Intentfilter you define the action you want. It is no more than a String.

You just have to make sure that this string is unique. Usually you use the package name plus something that identifies the action.

For example: namePackage.Proximityalert

The Intentfilter would then be instantiated:

IntentFilter intentFilter = new IntentFilter("nomePackage.ProximityAlert");  

Do not forget that the Intent should also be established with that IntentFilter:

Intent mIntent = new Intent ("nomePackage.ProximityAlert");

PendingIntent mFireIntent = PendingIntent.getBroadCast(this,-1,mIntent,0);

mLocationManager.addProximityAlert(mLatitude, mLongitude, mRadius, expiration, mFireIntent);  

To facilitate it is customary to declare a value static to save the filter string:

public static final String PROX_ALERT_INTENT = "nomePackage.ProximityAlert";