1 00:00:04,300 --> 00:00:08,660 Welcome back. It's slightly annoying having to leave the report screen 2 00:00:08,660 --> 00:00:12,260 to change the settings, especially as one of the settings 3 00:00:12,260 --> 00:00:14,060 is used to configure the report. 4 00:00:14,940 --> 00:00:18,140 Adding the option to the reports menu is trivial, 5 00:00:18,140 --> 00:00:19,740 so let's get that out of the way. 6 00:00:20,730 --> 00:00:25,230 Edit the menu report menu file in res/menu, 7 00:00:33,480 --> 00:00:36,480 drag a new menu item to the end of the menu. 8 00:00:41,980 --> 00:00:45,580 The ID should be rm_settings, 9 00:00:50,580 --> 00:00:53,780 and the title should be the string resource 10 00:00:53,780 --> 00:00:56,440 menutitle_settings. 11 00:01:06,320 --> 00:01:09,520 For the show as action, choose never. 12 00:01:16,320 --> 00:01:17,920 That's the menu changed. 13 00:01:18,170 --> 00:01:20,770 Next, we respond to it being tapped. 14 00:01:21,130 --> 00:01:25,130 We do that in the OnOptionsItemSelected function 15 00:01:25,430 --> 00:01:27,430 in the DurationsReport class. 16 00:02:13,430 --> 00:02:15,530 I won't spend time in the video 17 00:02:15,530 --> 00:02:18,530 testing the settings option appears on the reports menu. 18 00:02:18,830 --> 00:02:20,530 I suggest you do test it 19 00:02:20,530 --> 00:02:23,230 to make sure you haven't introduced a bug into the app. 20 00:02:24,730 --> 00:02:28,830 What you'll find is that changing the FirstDayOfTheWeek in the settings 21 00:02:28,830 --> 00:02:30,330 doesn't update the report. 22 00:02:31,130 --> 00:02:33,430 To make the changes take effect straight away, 23 00:02:33,430 --> 00:02:36,990 we need to observe the change to the app's shared preferences 24 00:02:36,990 --> 00:02:38,590 and respond when they change. 25 00:02:39,690 --> 00:02:43,790 The code to do that is very similar to how we're observing changes 26 00:02:43,790 --> 00:02:45,450 in the ContentObserver 27 00:02:45,950 --> 00:02:48,550 and also similar to our BroadcastReceiver. 28 00:02:49,540 --> 00:02:52,840 We create an implementation of the shared preferences 29 00:02:52,840 --> 00:02:56,940 on shared preference change listener interface and register it. 30 00:02:57,640 --> 00:03:00,840 We'll also unregister it in the uncleared function. 31 00:03:01,940 --> 00:03:06,300 We had a good demonstration of what can happen if you don't unregister things, 32 00:03:06,800 --> 00:03:09,160 so I don't think we need to say very much more about that. 33 00:03:09,660 --> 00:03:13,060 I'll create the listener after our BroadcastReceiver 34 00:03:13,060 --> 00:03:15,060 in the DurationsViewModel. 35 00:03:55,610 --> 00:03:59,210 It's important to check that we're responding to a change in the 36 00:03:59,210 --> 00:04:01,610 settings FirstDayOfTheWeek preference. 37 00:04:02,160 --> 00:04:04,060 We re-query the database 38 00:04:04,060 --> 00:04:07,660 and don't want to do that if an unrelated setting is changed. 39 00:04:08,540 --> 00:04:11,740 Our listener will be called when any of the settings are changed, 40 00:04:11,990 --> 00:04:14,590 so we ignore anything that won't affect the report. 41 00:04:15,470 --> 00:04:18,829 If the first day of the week setting is the one we were called about, 42 00:04:19,230 --> 00:04:22,930 we'll update the _FirstDayOfTheWeek variable, 43 00:04:23,430 --> 00:04:26,730 then set the calendar to the new first day. 44 00:04:27,730 --> 00:04:32,530 We used very similar code in the BroadcastReceiversOnReceive function. 45 00:04:33,630 --> 00:04:38,230 All right. Next, we have to register the listener in the init block. 46 00:04:51,830 --> 00:04:55,230 And of course, we need to unregister it in OnCleared. 47 00:05:10,230 --> 00:05:14,830 Time to test it. I'll run the app and go into the reports. 48 00:05:22,030 --> 00:05:26,530 It's easy to check that everything's working if I sort the report by date. 49 00:05:28,030 --> 00:05:32,030 At the moment, I've got rows from Tuesday to the following Monday. 50 00:05:32,530 --> 00:05:34,520 My week currently starts on a Tuesday. 51 00:05:35,170 --> 00:05:39,270 Call up the calendar to check if you've been experimenting with the settings. 52 00:05:41,970 --> 00:05:46,270 I'll go into the settings and change the first day to Friday. 53 00:05:54,770 --> 00:05:57,770 That's a day that is used in some places around the world. 54 00:05:58,570 --> 00:06:01,770 Tap okay, and the report updates straightaway. 55 00:06:04,070 --> 00:06:06,570 Listening to settings changes like this 56 00:06:06,570 --> 00:06:09,570 makes your app more responsive to your user. 57 00:06:10,230 --> 00:06:12,030 If they change one of the settings, 58 00:06:12,030 --> 00:06:15,030 they naturally expect the app to use the new values 59 00:06:15,530 --> 00:06:17,030 and this is how you can do that. 60 00:06:17,930 --> 00:06:20,530 There's only one thing left to implement in our app 61 00:06:21,030 --> 00:06:25,330 and that's the setting that lets the user choose to ignore short timings. 62 00:06:25,930 --> 00:06:29,230 We've provided the setting but we're not using it yet. 63 00:06:32,230 --> 00:06:35,830 So here's the challenge. Can you implement that feature? 64 00:06:36,430 --> 00:06:39,930 All the changes will be in the TaskTimerviewModel class, 65 00:06:40,430 --> 00:06:44,090 you'll need to listen to the change and update a variable 66 00:06:44,090 --> 00:06:48,090 when the settings_ignore_less_than preference changes. 67 00:06:48,990 --> 00:06:52,090 The variable will be used in the saveTiming function 68 00:06:52,450 --> 00:06:56,250 to only save timings that have a duration greater than it. 69 00:06:56,910 --> 00:07:01,270 Be careful with that part because it's not quite as straightforward as it seems. 70 00:07:02,070 --> 00:07:05,570 Make sure you understand how we're saving the timings 71 00:07:05,770 --> 00:07:08,370 before changing the saveTiming function. 72 00:07:09,360 --> 00:07:12,360 We've covered everything you'll need for the challenge. 73 00:07:12,360 --> 00:07:14,660 Have a go and see how you get on. 74 00:07:15,160 --> 00:07:17,960 I'll go over my solution in the next video. 75 00:07:17,960 --> 00:07:19,560 Good luck, and see you there.