1 00:00:00,420 --> 00:00:07,010 So now as you can see here our application is running on this emulator and now I want to click on these 2 00:00:07,410 --> 00:00:10,410 settings button here this spitting image. 3 00:00:10,410 --> 00:00:15,210 Now as you can see I actually transitioned to this activity settings activity right. 4 00:00:15,420 --> 00:00:21,390 And now I can see these options these items so I can actually change the number of guesses. 5 00:00:21,390 --> 00:00:27,890 So as you can see we have a typo here and I can actually it for example the animal is the type of anemones 6 00:00:27,900 --> 00:00:30,450 that I want to include in say the keys. 7 00:00:30,510 --> 00:00:38,640 I can actually change the background color or I can actually change the font of the texts of the buttons 8 00:00:38,640 --> 00:00:40,210 that we have in say the quiz. 9 00:00:40,260 --> 00:00:48,840 But for now we cannot actually change the settings because we haven't added that logic in order to actually 10 00:00:48,840 --> 00:00:51,350 interact with these items. 11 00:00:51,410 --> 00:00:57,360 Now as you can see at the top inside this action bar here we have dispatched button and now as you can 12 00:00:57,360 --> 00:00:59,800 see we transitioned to this main activity. 13 00:00:59,830 --> 00:01:03,150 And here you can see now we can actually play with the squeeze. 14 00:01:03,210 --> 00:01:11,820 So now let's actually go inside the Android studio and now let's actually go inside its main activity 15 00:01:11,820 --> 00:01:13,000 AFFREIGHTMENT here. 16 00:01:13,140 --> 00:01:15,750 So just double click and is main activity fragment. 17 00:01:16,020 --> 00:01:18,840 And now just double click on this tab here. 18 00:01:18,840 --> 00:01:23,120 Main activity fragment that Jobab in order to make this area wider. 19 00:01:23,160 --> 00:01:30,060 So here we are going to actually put some lines of code here inside this mine activity Fleischman class. 20 00:01:30,060 --> 00:01:30,590 OK. 21 00:01:30,750 --> 00:01:35,580 As you can see this main activity fragment is actually extending from this fragment. 22 00:01:35,670 --> 00:01:36,280 Right. 23 00:01:36,360 --> 00:01:40,740 So now I'm going to paste in some lines of code here inside this class and then I'm going to explain 24 00:01:40,740 --> 00:01:42,810 to you what's going on here. 25 00:01:42,900 --> 00:01:48,020 So as you can see here these are the lines of code that I pasted here. 26 00:01:48,210 --> 00:01:53,340 So in line number 24 we have this a value bet actually. 27 00:01:53,490 --> 00:01:56,620 So private static final INT. 28 00:01:56,640 --> 00:02:03,640 So this is actually a constant and the name of this constant is animals included inquiries. 29 00:02:03,660 --> 00:02:04,070 OK. 30 00:02:04,140 --> 00:02:12,280 So we can actually change this name to number number of animals included inquiries. 31 00:02:12,300 --> 00:02:19,230 So I decided to assign the value number 10 here you can assign any values that you want. 32 00:02:19,230 --> 00:02:22,210 So this constant is going to determine that. 33 00:02:22,320 --> 00:02:26,630 How many are animals that we've actually put inside our quiz. 34 00:02:26,730 --> 00:02:31,530 So I decided to assign the value number 10 in line number 26. 35 00:02:31,530 --> 00:02:38,160 We have a private list and this list actually accepts values of type stream. 36 00:02:38,250 --> 00:02:39,140 Right. 37 00:02:39,230 --> 00:02:47,020 And now as you can see here lists are actually like arrays we can assign arrays to this list. 38 00:02:47,190 --> 00:02:47,650 Right. 39 00:02:47,760 --> 00:02:51,270 But our list is actually on an interface in Java. 40 00:02:51,600 --> 00:02:59,500 And this list interface has more functions or methods that we can actually use for our own good. 41 00:02:59,520 --> 00:03:07,020 So that's why I actually use list instead of three or at least here and now you can see that we can 42 00:03:07,020 --> 00:03:15,450 actually assign Ariz to this list and we can actually take advantage of the methods that we have inside 43 00:03:15,450 --> 00:03:17,050 this list interface. 44 00:03:17,310 --> 00:03:26,900 So we have a list of string values and the name of this list is all animals names list right and line 45 00:03:26,910 --> 00:03:33,540 number 27 we have another list which is actually private which accepts values of types stream and the 46 00:03:33,540 --> 00:03:43,210 name of this list is animals names quizz least as you can see here and here in line number 28. 47 00:03:43,230 --> 00:03:46,200 We have another private set here. 48 00:03:46,200 --> 00:03:47,980 We have set here this time. 49 00:03:48,150 --> 00:03:56,020 So again our set is actually an interface that can not have duplicate its values. 50 00:03:56,130 --> 00:04:01,860 So we cannot actually assign duplicated values to set or set is like a list. 51 00:04:01,890 --> 00:04:02,390 OK. 52 00:04:02,430 --> 00:04:06,610 We can actually assign an array of values to this set. 53 00:04:06,720 --> 00:04:08,900 OK this is actually an interface right. 54 00:04:08,940 --> 00:04:15,840 And as I said before because this is actually an interface we can actually use the methods that we have 55 00:04:15,840 --> 00:04:21,630 inside this interface so we can assign an array to the set and we can take advantage of the methods 56 00:04:21,660 --> 00:04:22,620 of this interface. 57 00:04:22,620 --> 00:04:25,500 So this is a really good feature of java. 58 00:04:25,830 --> 00:04:33,420 So again let me tell you that a set is actually like an array but you cannot design duplicated values 59 00:04:33,420 --> 00:04:34,540 to a set. 60 00:04:34,740 --> 00:04:37,010 So private set that accepts std. 61 00:04:37,200 --> 00:04:41,830 String values and then Aimee's animal types inquiries. 62 00:04:41,880 --> 00:04:45,710 And we have another string value thing valuable here. 63 00:04:45,720 --> 00:04:51,420 As you can see private streams and the name is correct and commands answer right. 64 00:04:51,420 --> 00:04:55,700 So this is going to be the message that we want to show to the user Whenever to use that actually our 65 00:04:56,050 --> 00:04:59,810 is that the animal name right. 66 00:04:59,910 --> 00:05:06,240 And in line number of 30 as you can see here we have a valuable and this is actually private integer 67 00:05:06,240 --> 00:05:09,630 number of all guesses in line number 31. 68 00:05:09,630 --> 00:05:15,720 We have another valuable integer number of right answers line number 42. 69 00:05:15,720 --> 00:05:20,010 We have another variable integer number of animals. 70 00:05:20,140 --> 00:05:21,010 Yes rows. 71 00:05:21,180 --> 00:05:25,890 So we will be using these valuables here inside our code. 72 00:05:25,890 --> 00:05:30,290 But here I just want to actually show you and I just I just want to introduce you. 73 00:05:30,300 --> 00:05:34,950 It is really bells and later you will see that how we can actually use these valuables. 74 00:05:35,190 --> 00:05:39,900 So a number of animals Jethro's in line number first free as you can see here. 75 00:05:40,140 --> 00:05:43,960 We have actually a secure random number. 76 00:05:44,010 --> 00:05:51,550 So here we have a valuable type secure random that can actually hold values of type secure and that 77 00:05:51,600 --> 00:05:57,470 and the name of this variable is secure random number right in line number 44. 78 00:05:57,480 --> 00:06:02,170 As you can see here we have another variable which is actually handler. 79 00:06:02,310 --> 00:06:02,790 OK. 80 00:06:02,940 --> 00:06:05,340 And the name of this variable is handler. 81 00:06:05,520 --> 00:06:12,180 So literally you will see that are going to use this handler in order to actually transition between 82 00:06:12,510 --> 00:06:13,290 the question. 83 00:06:13,290 --> 00:06:16,380 So for example let me show you the emulator. 84 00:06:16,560 --> 00:06:21,130 So as you can see here now our application is running on this emulator. 85 00:06:21,480 --> 00:06:22,960 And here we can see that. 86 00:06:23,020 --> 00:06:27,840 And I actually for example say beer and here it says bear. 87 00:06:27,960 --> 00:06:34,200 And now it waits to want one or two seconds and then the next Actually question appears here. 88 00:06:34,200 --> 00:06:36,360 The next image or the next question. 89 00:06:36,360 --> 00:06:42,680 So for example if you have a snake here and if I select a here now as I can see it weights a one second 90 00:06:43,050 --> 00:06:45,350 and then the next question appears. 91 00:06:45,360 --> 00:06:49,430 So we use this handler in order to do that job for us. 92 00:06:49,470 --> 00:06:55,110 So that's why they actually created this handler here a line number 45 as you can see here. 93 00:06:55,290 --> 00:06:57,700 We have this animation. 94 00:06:57,960 --> 00:07:02,340 So now we have a variable that actually holds the run and set animation. 95 00:07:02,340 --> 00:07:08,230 So for example if we actually select Dolfin here now as you can see here this animation is occurring 96 00:07:08,240 --> 00:07:08,640 here. 97 00:07:08,640 --> 00:07:16,080 So we use this but in order to hold that animation and use it whenever I want in line number 37 as you 98 00:07:16,080 --> 00:07:22,950 can see here we have this linearly out of body able of linearly out and the name of this valuable is 99 00:07:23,360 --> 00:07:25,860 animalcules linearly out right. 100 00:07:25,890 --> 00:07:31,500 So we use these are linearly out in order to actually for example change the background color of the 101 00:07:32,190 --> 00:07:32,760 device. 102 00:07:32,760 --> 00:07:37,470 For example if I click on the settings spot in here and if I select is truth by going uncolored for 103 00:07:37,470 --> 00:07:42,480 example if I change it to read and if I click on this box to put in here now as you can see here the 104 00:07:42,480 --> 00:07:45,990 baculum column of this linear level is red. 105 00:07:46,440 --> 00:07:50,910 So I created this linearly out here in order to actually do that job. 106 00:07:51,240 --> 00:07:52,730 We have a taste of. 107 00:07:52,830 --> 00:07:53,830 The question number. 108 00:07:53,850 --> 00:07:57,960 So as you can see here it says this is animal one of 10. 109 00:07:57,960 --> 00:07:59,050 Right. 110 00:07:59,250 --> 00:08:05,980 And here as you can see we have this image view image I animal. 111 00:08:06,390 --> 00:08:11,880 So we use this valuable which is of type image view in order to hold the image that I want to show to 112 00:08:11,880 --> 00:08:12,420 the user. 113 00:08:12,420 --> 00:08:18,340 So for example here we have a mouse and the user by looking at this image can actually guess what it's 114 00:08:18,340 --> 00:08:19,710 going to be the name of this image. 115 00:08:19,710 --> 00:08:25,230 So now for example this mouse and now as you can see here it waits two seconds two or three seconds 116 00:08:25,560 --> 00:08:29,560 and the next question appears in line number 40. 117 00:08:29,610 --> 00:08:32,820 As you can see we have an array of linearly outs. 118 00:08:32,880 --> 00:08:33,490 Right. 119 00:08:33,510 --> 00:08:38,750 And then each of these array is rows of spottiness in animalcules. 120 00:08:38,760 --> 00:08:44,070 So where we're going to use this about right we have a variable which is actually an array of linearly 121 00:08:44,070 --> 00:08:49,310 outs and the name of this value but is the rows of guest buttons in animalcules. 122 00:08:49,500 --> 00:08:52,010 So for example as you can see we have two buttons here. 123 00:08:52,170 --> 00:08:53,860 We have another two buttons here. 124 00:08:53,880 --> 00:08:59,760 So as you can see we have two linearly outs that actually contain these buttons. 125 00:08:59,760 --> 00:09:06,150 The first linear layout is this one that actually contains two buttons forks and Tiger at the second 126 00:09:06,150 --> 00:09:07,320 linearly out here. 127 00:09:07,440 --> 00:09:10,530 This is actually horizontal linear left right. 128 00:09:10,710 --> 00:09:16,060 So this is our second linearly out that actually contains these two Bettina's peacock or chat. 129 00:09:16,080 --> 00:09:21,090 And if I click on the Settings button here and now if I click on this number of guesses here as you 130 00:09:21,090 --> 00:09:27,600 can see now if I select six and click on this back button here as you can see now we have six buttons. 131 00:09:27,590 --> 00:09:34,560 So this means that now we have three linearly outs so we use this array in order to actually control 132 00:09:35,100 --> 00:09:41,310 those are actually buttons those buttons so that they use that can actually change the number of buttons 133 00:09:41,310 --> 00:09:44,530 that can be appear on this quiz. 134 00:09:44,790 --> 00:09:49,370 So this is very important is that we create a variable for that of and array. 135 00:09:49,440 --> 00:09:56,280 As you can see here of the nearly outs in line number 41 we have another taste view and this is going 136 00:09:56,280 --> 00:09:57,570 to be the the answer. 137 00:09:57,570 --> 00:10:03,890 So for example at Fox and if I click click on these folks here now it says Fox exclamation mark you're 138 00:10:03,880 --> 00:10:04,400 right. 139 00:10:04,560 --> 00:10:09,360 So this variable is going to actually hold that value for us which is I think takes a few bites so we 140 00:10:09,360 --> 00:10:12,450 can actually create a reference to that text. 141 00:10:12,510 --> 00:10:16,870 And the lights are on actually logic here. 142 00:10:17,010 --> 00:10:23,030 So now I think you can actually understand what are these lines of code are doing here. 143 00:10:23,220 --> 00:10:29,450 So now we're going to go and put up more logic here inside this main activity fragment find.