1 00:00:00,260 --> 00:00:05,790 Hire everyone in this tutorial we are going to go ahead and create another Android application. 2 00:00:05,790 --> 00:00:06,760 So just click on this. 3 00:00:06,780 --> 00:00:14,100 Start in your Android studio project here and here for the application name just type in here app 23 4 00:00:14,730 --> 00:00:23,030 and then click on next and here choose API 16 Android 4.1 Jelly Bean for a minimum STK next. 5 00:00:23,580 --> 00:00:26,970 And here choose our Blache activity next. 6 00:00:27,120 --> 00:00:28,560 And then actually kind of finish. 7 00:00:28,560 --> 00:00:35,100 Now let's actually select this hellova of the takes here and then press on delete key on your keyboard. 8 00:00:35,100 --> 00:00:37,640 Now double click on these arrays folder here. 9 00:00:37,860 --> 00:00:44,160 Lay out activity underline made that example and then select this floating action button here and then 10 00:00:44,610 --> 00:00:46,450 press on the real key on your keyboard. 11 00:00:46,470 --> 00:00:46,950 OK. 12 00:00:47,280 --> 00:00:50,840 So now let's actually go back inside this content underline minute example. 13 00:00:51,000 --> 00:00:55,500 And here we want to actually design the user interface of our application. 14 00:00:55,500 --> 00:00:56,020 OK. 15 00:00:56,200 --> 00:01:03,340 OK so now let's actually drag linearly out vertical at the center of these relatively out here. 16 00:01:03,420 --> 00:01:04,050 OK. 17 00:01:04,330 --> 00:01:08,300 And now let's actually find the scroll view here. 18 00:01:08,320 --> 00:01:16,050 Hold it actually we need to drag our vertical scroll view into these linear linear. 19 00:01:16,200 --> 00:01:19,380 Lay out your vertical as you can see here. 20 00:01:19,380 --> 00:01:23,130 And then we need to actually put in a linearly vertical. 21 00:01:23,210 --> 00:01:29,960 Inside this scroll view here as you know this scroll you can only accept one direct choice. 22 00:01:30,000 --> 00:01:30,750 OK. 23 00:01:30,990 --> 00:01:37,040 So we actually put these linearly vertical inside this scroll view here. 24 00:01:37,050 --> 00:01:37,820 OK. 25 00:01:38,280 --> 00:01:46,160 And now let's actually drag up takes few large takes you into these linearly outwards to call here. 26 00:01:46,380 --> 00:01:47,030 OK. 27 00:01:47,160 --> 00:01:49,780 And double click and this takes you here. 28 00:01:50,220 --> 00:01:54,990 And for the text just typing here the name of the game is. 29 00:01:54,990 --> 00:02:01,190 So as you can see here I just actually wrote here the name of the game is colon. 30 00:02:01,280 --> 00:02:01,800 OK. 31 00:02:01,890 --> 00:02:04,260 And then present Enter key on your keyboard. 32 00:02:04,260 --> 00:02:10,470 So now let's actually try another large text view into this linearly alphabetical vertical here and 33 00:02:10,470 --> 00:02:15,140 double click on these text view here and delete the text of this text view. 34 00:02:15,150 --> 00:02:19,110 And for the ID just type in here TXI the game name. 35 00:02:19,110 --> 00:02:20,070 OK. 36 00:02:20,730 --> 00:02:22,860 And then present Enter key on your keyboard. 37 00:02:23,160 --> 00:02:24,050 That's actually right. 38 00:02:24,070 --> 00:02:27,850 Another large text view into this linearly aesthetical here. 39 00:02:28,050 --> 00:02:34,890 And this time double click and this takes you and for the text just typing here this course of the game 40 00:02:35,040 --> 00:02:37,160 are colon OK. 41 00:02:37,410 --> 00:02:43,740 So as you can see here I wrote here this course of the game are OK and then press Enter key on your 42 00:02:43,740 --> 00:02:44,600 keyboard. 43 00:02:45,000 --> 00:02:51,670 So now it's actually right and other large text view into this linearly or two article here and WDTN 44 00:02:51,750 --> 00:02:59,850 the sticks you hear delete the text of this text view and for the ID just a in here takes the game scores. 45 00:02:59,910 --> 00:03:01,270 OK. 46 00:03:02,250 --> 00:03:05,000 And then press that enter key on your keyboard. 47 00:03:05,010 --> 00:03:10,800 So now let's actually track and other large takes you into this linearly Altschuler equal here. 48 00:03:10,950 --> 00:03:11,410 OK. 49 00:03:11,520 --> 00:03:14,050 And then double click and these are text view here. 50 00:03:14,280 --> 00:03:14,830 OK. 51 00:03:15,030 --> 00:03:19,020 And for the text of this text view just type in here. 52 00:03:19,200 --> 00:03:22,430 The lowest score of the game is colon. 53 00:03:22,620 --> 00:03:23,160 OK. 54 00:03:23,310 --> 00:03:28,080 So as you can see here are you right here the lowest score of the game is called in. 55 00:03:28,080 --> 00:03:28,340 OK. 56 00:03:28,350 --> 00:03:33,930 And then present Enter key on your keyboard and then let's actually right and other large takes you 57 00:03:34,260 --> 00:03:39,620 into this linearly elsewheres equal here and WDTN the state's view here. 58 00:03:39,660 --> 00:03:45,830 Deleted the text of the stakes for you and for the ID just in here takes the game lowest score. 59 00:03:45,840 --> 00:03:46,890 OK. 60 00:03:48,330 --> 00:03:50,660 And then present Enter key on your keyboard. 61 00:03:50,940 --> 00:03:55,860 Now let's actually decide on another large this view into this linearly 20 call. 62 00:03:56,280 --> 00:03:57,620 Double click on it. 63 00:03:57,630 --> 00:04:10,590 And for the text just taken here the highest score of the game is ok colon and then a person into here 64 00:04:10,600 --> 00:04:17,530 on your keyboard Let's actually write another large view into this linearly alphabetical here and double 65 00:04:17,530 --> 00:04:25,660 click on it and delete the text of this text view and for the ID just taken here takes the game highest 66 00:04:25,670 --> 00:04:31,780 score OK score and then press on and Turkey on your keyboard. 67 00:04:31,790 --> 00:04:40,360 OK so now let's actually try and order a large text view into this linearly or vertical here and double 68 00:04:40,360 --> 00:04:41,950 click and this takes you here. 69 00:04:42,070 --> 00:04:42,680 OK. 70 00:04:43,150 --> 00:04:50,380 And then just type in here the average value of this calls is colon and then our person and the key 71 00:04:50,380 --> 00:04:51,400 on your keyboard. 72 00:04:51,400 --> 00:04:58,020 Now let's actually track a larger text view into these linearly alphabetical here and double clicking 73 00:04:58,020 --> 00:04:58,760 on it. 74 00:04:58,930 --> 00:05:04,660 Is the text of this text for you and for the idea just typing here takes the game average takes the 75 00:05:04,660 --> 00:05:10,500 game average value of scores. 76 00:05:10,620 --> 00:05:11,690 OK. 77 00:05:12,550 --> 00:05:15,550 And then press Enter key on your keyboard. 78 00:05:15,550 --> 00:05:19,240 So now the design of our user interface is actually finished. 79 00:05:19,240 --> 00:05:24,910 Now let's actually go back inside this main activity or job of file here delete these lines of code 80 00:05:24,940 --> 00:05:28,350 that are actually related to the Options menu here. 81 00:05:28,390 --> 00:05:28,880 OK. 82 00:05:29,060 --> 00:05:34,200 And then delete this block of code that is actually related to the floating action button. 83 00:05:34,540 --> 00:05:36,780 And now we can actually put in our own code here. 84 00:05:36,820 --> 00:05:37,480 OK. 85 00:05:37,810 --> 00:05:41,290 So first of all we need to actually create a Java class. 86 00:05:41,350 --> 00:05:45,440 So just click on File Neo and then click on Java class. 87 00:05:45,460 --> 00:05:46,210 OK. 88 00:05:46,600 --> 00:05:52,180 And for the class name just type in here again and then click on OK here. 89 00:05:52,180 --> 00:05:54,500 So as you can see here this is our game class. 90 00:05:54,550 --> 00:05:55,010 OK. 91 00:05:55,120 --> 00:05:58,730 And then we can actually put our own codes inside of this game class. 92 00:05:58,770 --> 00:06:03,200 OK so now let's actually create our two instance variables. 93 00:06:03,250 --> 00:06:04,110 OK. 94 00:06:04,870 --> 00:06:08,400 As you can see here these are my two instance variables. 95 00:06:08,710 --> 00:06:14,400 And as you can see the access modifier of these instance variables is actually private. 96 00:06:14,770 --> 00:06:21,230 And the other type of this instance but is strange and the name of this instance variable is actually 97 00:06:21,230 --> 00:06:22,260 a game name OK. 98 00:06:22,390 --> 00:06:26,910 And as you can see here I didn't instantiate this instance variable here. 99 00:06:26,930 --> 00:06:29,780 OK I just declared this instance variable. 100 00:06:29,950 --> 00:06:35,110 And here again as you can see the data type of this instance variable is integer. 101 00:06:35,290 --> 00:06:39,120 And here I just want to actually create a two dimensional array. 102 00:06:39,280 --> 00:06:44,200 OK so I just put in two pair of brackets here as you can see here. 103 00:06:44,410 --> 00:06:47,650 And then the name of this instance variable is is score's. 104 00:06:47,650 --> 00:06:48,110 OK. 105 00:06:48,250 --> 00:06:53,020 So as you can see here again I didn't instantiate this instance variable here. 106 00:06:53,170 --> 00:06:53,610 OK. 107 00:06:53,680 --> 00:07:00,460 Now let's actually create a constructor and then instantiate this instance variables inside of that 108 00:07:00,460 --> 00:07:01,620 constructor OK. 109 00:07:01,870 --> 00:07:08,220 So as you can see here this is my constructor and the access modifier of the of my constructor is public. 110 00:07:08,320 --> 00:07:13,720 The name of my constructor is gain as you can see here the name of the constructor must be the same 111 00:07:13,990 --> 00:07:15,820 as the name of the class name. 112 00:07:15,820 --> 00:07:16,340 OK. 113 00:07:16,600 --> 00:07:19,290 And this constructor actually accepts two arguments. 114 00:07:19,320 --> 00:07:25,750 Ok the first argument as you can see here the type of the first argument is strange the name of my first 115 00:07:25,750 --> 00:07:27,550 argument is game name. 116 00:07:27,550 --> 00:07:33,580 And again the type of my second argument as you can see is integer a two dimensional array of integers 117 00:07:33,730 --> 00:07:34,670 as you can see here. 118 00:07:34,870 --> 00:07:41,260 And the name of my argument as you can see here is score's as you can see this name is the same as the 119 00:07:41,260 --> 00:07:43,470 name of this instance variable. 120 00:07:43,480 --> 00:07:44,050 OK. 121 00:07:44,260 --> 00:07:51,040 So inside of this constructor as you can see here I actually instantiated these instance variables these. 122 00:07:51,130 --> 00:07:57,430 So as you know this keyboard as you can see here is actually referring to an object that is actually 123 00:07:57,430 --> 00:08:03,680 created from this game class for example if you actually create an object from the game class inside 124 00:08:03,700 --> 00:08:09,910 of this main activity that java file then this keyword here refers to that object. 125 00:08:09,910 --> 00:08:10,400 OK. 126 00:08:10,660 --> 00:08:16,260 And this name actually refers to this game an instance variable assignment operator. 127 00:08:16,270 --> 00:08:21,920 And here I am actually referring to this game name instance variable as you can do this. 128 00:08:21,920 --> 00:08:27,430 Our game name our argument as you can see this game is actually fit into this argument. 129 00:08:27,460 --> 00:08:30,860 And this game name is actually referring to this instance variable. 130 00:08:30,860 --> 00:08:31,430 OK. 131 00:08:31,780 --> 00:08:39,070 So in order because of the name of this instance variable is the same as the name of this argument here 132 00:08:39,070 --> 00:08:45,130 we need we actually need it to refer to this game an instance variable. 133 00:08:45,130 --> 00:08:47,900 By preceding its name by this key word. 134 00:08:48,010 --> 00:08:48,590 OK. 135 00:08:48,760 --> 00:08:50,470 So this dart game name. 136 00:08:50,470 --> 00:08:56,010 Actually the first to this instance variable and this game actually refers to this argument. 137 00:08:56,020 --> 00:08:56,540 OK. 138 00:08:56,620 --> 00:09:00,880 And here we are assigning this argument to this instance variable. 139 00:09:00,880 --> 00:09:06,480 Actually we are instantiating this instance variable here and here again this is this. 140 00:09:06,580 --> 00:09:11,920 It's the same story we are referring to this is called this instance variable by presidium it's named 141 00:09:11,920 --> 00:09:13,390 by this key vote. 142 00:09:13,540 --> 00:09:19,690 And here you are assigning these scores argument to this instance variable here. 143 00:09:19,810 --> 00:09:20,800 OK. 144 00:09:21,520 --> 00:09:23,350 So hopefully that makes sense. 145 00:09:23,650 --> 00:09:28,670 And now let's actually putting some lines of code here after the constructor here. 146 00:09:28,720 --> 00:09:35,140 So here let's actually create our set here and I'll get here for this game name instance variable here 147 00:09:35,170 --> 00:09:36,050 as you can see. 148 00:09:36,400 --> 00:09:40,490 So here as you can see here this is my upset game named Mefford. 149 00:09:40,550 --> 00:09:43,850 OK this is a setter for this game named instance variable. 150 00:09:44,050 --> 00:09:50,140 And this method actually accepts an argument of types 3 in the name of this argument is game name. 151 00:09:50,140 --> 00:09:55,510 And here again I am actually assigning the value of this argument to this instance variable. 152 00:09:55,510 --> 00:09:58,160 It is that game name assignment operator gave me. 153 00:09:58,260 --> 00:10:04,550 Ok and now let's actually create a getter for this game an instance variable.