Hide "recent access" and "see all" when location off

This CL also does the following:
- Change "past 24 hour access" to "recent access"
- Add timestamp to recent access app
- Remove the summary of "Location Services" button

Bug: 180533061
Test: on device
Change-Id: I0405cb6f363243db9f2c9ccf8ab8788b633d1564

src/com/android/settings/location/RecentLocationAccessPreferenceController.java

@@ -17,6 +17,7 @@ import static android.Manifest.permission_group.LOCATION;
 
 import android.content.Context;
 import android.content.Intent;
+import android.icu.text.RelativeDateTimeFormatter;
 import android.os.UserHandle;
 import android.os.UserManager;
 
@@ -29,6 +30,7 @@ import com.android.settings.R;
 import com.android.settings.dashboard.DashboardFragment;
 import com.android.settings.dashboard.profileselector.ProfileSelectFragment;
 import com.android.settingslib.location.RecentLocationAccesses;
+import com.android.settingslib.utils.StringUtil;
 import com.android.settingslib.widget.AppPreference;
 
 import java.util.ArrayList;
@@ -113,7 +115,8 @@ public class RecentLocationAccessPreferenceController extends LocationBasePrefer
 
     @Override
     public void onLocationModeChanged(int mode, boolean restricted) {
-        mCategoryRecentLocationRequests.setEnabled(mLocationEnabler.isEnabled(mode));
+        boolean enabled = mLocationEnabler.isEnabled(mode);
+        mCategoryRecentLocationRequests.setVisible(enabled);
     }
 
     /**
@@ -133,6 +136,9 @@ public class RecentLocationAccessPreferenceController extends LocationBasePrefer
         final AppPreference pref = new AppPreference(prefContext);
         pref.setIcon(access.icon);
         pref.setTitle(access.label);
+        pref.setSummary(StringUtil.formatRelativeTime(prefContext,
+                System.currentTimeMillis() - access.accessFinishTime, false,
+                RelativeDateTimeFormatter.Style.SHORT));
         pref.setOnPreferenceClickListener(new PackageEntryClickedListener(
                 fragment.getContext(), access.packageName, access.userHandle));
         return pref;