How to Request Runtime Location Permissions in Android?

How to Request Location Permission at Runtime

In your code, you correctly check for the location permissions and handle the case where permissions are not granted. However, to actually request the permissions at runtime, you need to use ActivityCompat.requestPermissions.

Here's your corrected MainActivity:

public class MainActivity extends AppCompatActivity implements LocationListener {

    // ... (rest of your code)

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED ||
            ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION}, PERMISSION_REQUEST_CODE);
        } else {
            // Permissions already granted
            // ...
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);

        if (requestCode == PERMISSION_REQUEST_CODE) {
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED && grantResults[1] == PackageManager.PERMISSION_GRANTED) {
                // Permissions granted
                // ...
            } else {
                // Permissions denied
                // ...
            }
        }
    }

    // ... (rest of your code)

}

Where PERMISSION_REQUEST_CODE is an integer constant you can define to easily reference the permission request.

Additional Considerations

• Make sure to add the location permissions to the AndroidManifest.xml file:

<manifest ...>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
</manifest>

• If you encounter this problem in a library project, make sure to declare the permissions in the library's AndroidManifest.xml file as well.

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