Add Location Checks on CellLocation#requestLocationUpdate am: 32deda2d

package android.telephony;

import android.app.ActivityThread;

import android.compat.annotation.UnsupportedAppUsage;

import android.content.Context;

import android.os.Bundle;

import android.os.RemoteException;

import android.os.ServiceManager;

public abstract class CellLocation {

    /**

     * Request an update of the current location.  If the location has changed,

     * a broadcast will be sent to everyone registered with {@link

     * PhoneStateListener#LISTEN_CELL_LOCATION}.

     * This method will not do anything.

     *

     * Whenever location changes, a callback will automatically be be sent to

     * all registrants of {@link PhoneStateListener#LISTEN_CELL_LOCATION}.

     *

     * <p>This method is a no-op for callers targeting SDK level 31 or greater.

     * <p>This method is a no-op for callers that target SDK level 29 or 30 and lack

     * {@link android.Manifest.permission#ACCESS_FINE_LOCATION}.

     * <p>This method is a no-op for callers that target SDK level 28 or below and lack

     * {@link android.Manifest.permission#ACCESS_COARSE_LOCATION}.

     *

     * Callers wishing to request a single location update should use

     * {@link TelephonyManager#requestCellInfoUpdate}.

     */

    public static void requestLocationUpdate() {

        // Since this object doesn't have a context, this is the best we can do.

        final Context appContext = ActivityThread.currentApplication();

        if (appContext == null) return; // should never happen

        try {

            ITelephony phone = ITelephony.Stub.asInterface(ServiceManager.getService("phone"));

            if (phone != null) {

                phone.updateServiceLocation();

                phone.updateServiceLocationWithPackageName(appContext.getOpPackageName());

            }

        } catch (RemoteException ex) {

            // ignore it

    @UnsupportedAppUsage

    void updateServiceLocation();

    /**

     * Version of updateServiceLocation that records the caller and validates permissions.

     */

    void updateServiceLocationWithPackageName(String callingPkg);

    /**

     * Request to update location information for a subscrition in service state

     * @param subId user preferred subId.