SoFunction
Updated on 2025-04-07

The process steps for Android to obtain positioning through GPS

Getting GPS positioning in Android applications can be achieved through the following steps:

1. Add permissions:Add the necessary permission declaration to the application's file to obtain positioning permissions.

Here is an example:

xml
<manifest xmlns:andro
    package="">
    <uses-permission android:name=".ACCESS_FINE_LOCATION" />
    <uses-permission android:name=".ACCESS_COARSE_LOCATION" />
    <!-- ...Other permission statements... -->
    <application>
        <!-- ...Other application configurations... -->
    </application>
</manifest>

In the above example, we addedACCESS_FINE_LOCATIONandACCESS_COARSE_LOCATIONPermissions, used to obtain precise and rough positioning permissions respectively.

2. Create a positioning service class:Create an inherited fromServiceclass, used to handle positioning related logic. You can customize a class, or use the location service class provided by Android.LocationManager。

3. Obtain a location service instance:Get the location service instance in the application, you can use it()Method to obtainLocationManagerExample. The sample code is as follows:

LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

4. Register a location update listener: In order to receive location updates, a location listener needs to be registered. Can be used()Method registers the listener and specifies the conditions and callbacks for location updates. The sample code is as follows:

LocationListener locationListener = new LocationListener() {
    @Override
    public void onLocationChanged(Location location) {
        // Handle location update events        double latitude = ();
        double longitude = ();
        // ...
    }
    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        // Handle position status change events    }
    @Override
    public void onProviderEnabled(String provider) {
        // Handle location provider enable event    }
    @Override
    public void onProviderDisabled(String provider) {
        // Handle the location provider disable event    }
};
// Register the location listener(LocationManager.GPS_PROVIDER, 0, 0, locationListener);

In the above example, we useLocationManager.GPS_PROVIDERAs a location provider, it means using GPS positioning.0, 0It means that the minimum time interval and minimum distance change are 0, that is, the location update is obtained in real time.

If you want to accurately obtain the geographical location and ensure that the obtained location information is not empty as much as possible, you need to use it

()

        Criteria criteria = new Criteria();
        (Criteria.ACCURACY_FINE);
        (false);
        (false);
        (true);
        (Criteria.POWER_LOW); // Low power consumption        List<String> providerList = (true); // Get GPS information        int i = 0;
        try {
            do {
                try {
                    i++;
                    // Get the location through different providers                    location = ((i));
                    ((i), 60000, 1,
                            locationListener);
                } catch (Exception e) {
                    ();
                }
            } while (location == null && i < ());
        } catch (Exception e) {
            ();
        }
        if (i == ()) {
            return;
        }
        new Thread() {
            @Override
            public void run() {
                // Use GPS original positioning to obtain detailed addresses and save city information to the local area                try {
                    address = getAddress(context, (),         ());
                    String addressStr = "\nGPS gets location details:\nCity Locality:" +
                            () +
                            "\nStreet throughfare:" +
                            () +
                            "\nLongitude:" +
                            () +
                            "\nLatitude:" +
                            ();
                } catch (Exception e) {
                    ();
                }
            }
        }.start();

5. Get the latest location: You can use()Method to obtain the location information of the last time. The sample code is as follows:

Location lastKnownLocation = (LocationManager.GPS_PROVIDER);
if (lastKnownLocation != null) {
    double latitude = ();
    double longitude = ();
    // Process the latest location information}

In the above code, weLocationManagerGet it inGPS_PROVIDERnearest location.

It should be noted that obtaining GPS positioning requires equipment support and may be affected by weak or no signal in indoor environments. Also pay attention to checking and handling user authorization before using GPS positioning to ensure that the positioning permission has been obtained. In addition, in order to protect user privacy and save equipment power, the listener should be updated in time when no positioning is required.

This is a basic step to obtain GPS positioning, and you can further process the positioning information and error handling according to your needs.

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