1 00:00:01,020 --> 00:00:13,130 Private static final INT and this time the name of my constant is Panter and then I assigned the value 2 00:00:13,140 --> 00:00:16,120 12 to my constant here. 3 00:00:16,200 --> 00:00:17,200 OK. 4 00:00:17,700 --> 00:00:22,430 So hopefully that makes sense and then it's actually OK. 5 00:00:22,540 --> 00:00:27,680 Now let's actually declare some objects here inside of this main activity class here. 6 00:00:27,720 --> 00:00:28,490 OK. 7 00:00:28,770 --> 00:00:33,110 So first of all I want to declare an object of type text. 8 00:00:33,250 --> 00:00:34,030 View. 9 00:00:34,230 --> 00:00:39,540 Takes view he makes the calculations and I put a semi-colon here. 10 00:00:39,630 --> 00:00:44,010 And remember we are here actually declaring an object of type text. 11 00:00:44,020 --> 00:00:50,930 View we do not instantiate this object yet let's actually declare another object image view. 12 00:00:51,710 --> 00:00:52,500 OK. 13 00:00:52,770 --> 00:00:58,490 I m g dice semicolon button. 14 00:00:59,290 --> 00:00:59,980 OK. 15 00:01:00,470 --> 00:01:04,280 And between restart game let me actually explain again. 16 00:01:04,290 --> 00:01:14,190 We are here only declaring these objects and these are objects actually do not refer to any valid object 17 00:01:14,190 --> 00:01:18,990 yet these objects just referred to a null object inside the memory. 18 00:01:19,020 --> 00:01:20,820 These activities are only references. 19 00:01:20,830 --> 00:01:27,210 OK these are only different references and these are only actually referring to another object inside 20 00:01:27,230 --> 00:01:30,850 the memory because we do not actually instantiate these objects yet. 21 00:01:30,900 --> 00:01:35,340 And if you want to use these objects inside this and create Meffert or any other methods you're going 22 00:01:35,330 --> 00:01:40,860 to actually get some errors and you end up with with an exception. 23 00:01:40,860 --> 00:01:42,980 And your application may crash. 24 00:01:43,040 --> 00:01:48,740 OK so you need to actually always make sure that you are instance creating your objects. 25 00:01:48,800 --> 00:01:52,960 OK so but here I just want to declare these objects. 26 00:01:53,190 --> 00:01:53,870 OK. 27 00:01:54,200 --> 00:01:55,640 So strange. 28 00:01:55,690 --> 00:02:08,600 All the calculations value all the calculations value and then this time I went to the instance this 29 00:02:08,600 --> 00:02:11,240 object with an antibody. 30 00:02:11,240 --> 00:02:17,250 OK so now let's actually declare order a boolean variable here. 31 00:02:17,900 --> 00:02:24,100 So here just type in Boolean OK first time. 32 00:02:24,860 --> 00:02:28,010 And then I want to assign the value to my variable. 33 00:02:28,010 --> 00:02:31,410 Now I want to actually create a variable of type status. 34 00:02:31,490 --> 00:02:38,420 OK so the member status is our own type that we actually created here in line 17 inside this main activity 35 00:02:38,420 --> 00:02:39,320 class. 36 00:02:39,320 --> 00:02:46,900 So remember that here we are actually creating a variable of type status and status is our own type 37 00:02:46,910 --> 00:02:49,210 that we actually created in line 17. 38 00:02:49,280 --> 00:02:49,750 OK. 39 00:02:49,820 --> 00:02:53,890 As you can see here we created an enum of type status. 40 00:02:53,960 --> 00:02:54,580 OK. 41 00:02:54,810 --> 00:02:56,730 And as you can see we can't. 42 00:02:56,840 --> 00:03:01,180 We can only assign these values to this in on here. 43 00:03:01,200 --> 00:03:02,550 OK not started yet. 44 00:03:02,670 --> 00:03:04,430 Proceed one last. 45 00:03:04,670 --> 00:03:08,190 So here I refer to the name of these type status. 46 00:03:08,210 --> 00:03:08,680 OK. 47 00:03:08,890 --> 00:03:09,790 This you know. 48 00:03:10,160 --> 00:03:20,990 And then I want to actually give a name to these valuable games that is like declaring or creating variables 49 00:03:21,080 --> 00:03:23,920 like integer variables or boolean variables here. 50 00:03:24,260 --> 00:03:28,490 You can actually create enough variables here as you can see. 51 00:03:28,520 --> 00:03:33,630 So the type of our variable is status and the name of a variable is game status. 52 00:03:33,650 --> 00:03:34,090 OK. 53 00:03:34,200 --> 00:03:40,050 Assignment operator and here I need to actually refer to the name of this status in arm. 54 00:03:40,310 --> 00:03:49,430 Ok but here again I can only assign these values to the variable status that last status that not started 55 00:03:49,430 --> 00:03:50,080 yet. 56 00:03:50,120 --> 00:03:52,630 Status that proceed status. 57 00:03:52,790 --> 00:04:01,490 That one here and here are some of the methods that you can actually use up in arms about it in this 58 00:04:01,490 --> 00:04:02,090 application. 59 00:04:02,090 --> 00:04:07,690 In this tutorial I just wanted to show you how you can actually assign values to these names. 60 00:04:07,780 --> 00:04:12,540 OK I'll talk more about enoughs in later tutorials. 61 00:04:12,860 --> 00:04:18,530 But for now I just want to show you how you can create declare and create incomes and use those names 62 00:04:18,560 --> 00:04:19,450 in your applications. 63 00:04:19,490 --> 00:04:23,120 Ok so here I want to actually actually assign the value. 64 00:04:23,120 --> 00:04:24,860 Not started yet. 65 00:04:24,920 --> 00:04:27,340 These are game status here. 66 00:04:27,470 --> 00:04:27,910 OK. 67 00:04:28,040 --> 00:04:34,850 So as you can see here we have A-type here status and we have a name and I assign this value status 68 00:04:34,850 --> 00:04:38,280 that not started yet to this variable here. 69 00:04:38,420 --> 00:04:38,910 OK. 70 00:04:39,110 --> 00:04:42,880 And remember this not stuff that yet is actually zero. 71 00:04:43,160 --> 00:04:43,790 OK. 72 00:04:44,120 --> 00:04:45,700 And it is the value zero. 73 00:04:45,810 --> 00:04:54,080 But for making it more readable for humans I decided to use this text instead of an integer around integer 74 00:04:54,080 --> 00:04:58,380 numbers so that you can actually see what's going on in our game. 75 00:04:58,460 --> 00:04:59,050 OK. 76 00:04:59,390 --> 00:05:08,970 And now I want to actually create an integer variable int and the name of our variable is points. 77 00:05:09,320 --> 00:05:09,900 OK. 78 00:05:09,980 --> 00:05:14,410 And then I need to actually put a semi-colon at the end of our statement here. 79 00:05:14,630 --> 00:05:15,130 OK. 80 00:05:15,230 --> 00:05:17,760 So now let's actually go inside this and create Mefford. 81 00:05:17,810 --> 00:05:23,380 And and here we can actually put in some quotes inside of these uncreate Muffat. 82 00:05:23,540 --> 00:05:24,100 OK. 83 00:05:24,260 --> 00:05:30,830 Now let's actually instantiate some of these objects that we actually created here inside this mean 84 00:05:30,830 --> 00:05:31,830 activity class. 85 00:05:31,940 --> 00:05:39,690 So here I can just refer to the name of this object TXI the calculations assignment operator. 86 00:05:39,980 --> 00:05:47,330 And then I can just cast this object to take three object find view by either the artist or the dots 87 00:05:47,720 --> 00:05:51,060 he makes the calculations OK. 88 00:05:51,860 --> 00:05:56,830 Again let's actually instantiate this IMT dice object. 89 00:05:56,870 --> 00:05:57,630 I m g. 90 00:05:57,710 --> 00:06:06,260 Dice assignment operator and then let's actually cast this object to our view object find view by the 91 00:06:06,640 --> 00:06:08,820 artist Id got. 92 00:06:09,090 --> 00:06:16,250 I m g so as you can see here the autocomplete feature here doesn't help us because we didn't assign 93 00:06:16,340 --> 00:06:19,640 any ID to the use of image image view here. 94 00:06:19,730 --> 00:06:25,520 So we need to actually assign an ID to this image view or AMG dice. 95 00:06:26,180 --> 00:06:26,730 OK. 96 00:06:26,930 --> 00:06:31,830 And then inside the main activity that you will find an insight this and create with it. 97 00:06:31,850 --> 00:06:33,970 I can't just referred to the name of this. 98 00:06:34,310 --> 00:06:35,940 I enjoy dice ID here. 99 00:06:36,020 --> 00:06:37,090 OK. 100 00:06:37,670 --> 00:06:40,940 And then let's actually to instantiate this button. 101 00:06:41,150 --> 00:06:41,390 OK. 102 00:06:41,390 --> 00:06:48,020 As you can see it's now showing us an error because we cast this object to a text view object we must 103 00:06:48,020 --> 00:06:50,000 cast this object to an image object. 104 00:06:50,020 --> 00:06:51,890 OK so this is very important. 105 00:06:51,900 --> 00:06:58,760 We can actually instantiate this between and start Game button here PTEN we start Game assignment operator 106 00:06:58,790 --> 00:07:03,220 and here if I actually test this object again to an image object. 107 00:07:03,500 --> 00:07:10,670 Let's see what it's ok find you by ID or that Id thought PTEN restart. 108 00:07:10,810 --> 00:07:16,470 As you can see here the compiler is complaining and we cannot cast this object to our own imagery or 109 00:07:16,480 --> 00:07:17,060 object. 110 00:07:17,260 --> 00:07:21,330 So we need to actually cast this object to about an object. 111 00:07:21,340 --> 00:07:24,460 And as you can see here now the error is gone. 112 00:07:24,490 --> 00:07:25,030 OK. 113 00:07:25,150 --> 00:07:36,630 And here let's actually create a text object that takes view to the game status and assignment operator. 114 00:07:36,790 --> 00:07:45,340 And here we need to actually cast this object to test object find view by ID or that ID that makes the 115 00:07:45,760 --> 00:07:47,180 gain status OK. 116 00:07:47,620 --> 00:07:53,810 And now outside of these uncreate Smurfette I want to actually create some other room if it's here OK. 117 00:07:54,100 --> 00:07:59,890 And the concepts that I am going to show you here is actually called encapsulations and this means in 118 00:08:00,310 --> 00:08:07,810 selecting your statements and your valuables in a one block of code and then use that block of code 119 00:08:08,080 --> 00:08:12,530 every time you need that block of code in your program. 120 00:08:12,600 --> 00:08:18,330 OK so let me show you how you can actually use in translation in your programs. 121 00:08:18,500 --> 00:08:19,130 OK. 122 00:08:19,330 --> 00:08:27,320 So here as you can see I am inside of these main activity class and outside of these uncreate Mefford. 123 00:08:27,760 --> 00:08:30,580 And here I want to actually create some if it's OK. 124 00:08:30,670 --> 00:08:37,210 So first of all I want to actually specify the access modifier private's and the return type of name 125 00:08:37,210 --> 00:08:42,640 if it is void and the name of my method is made. 126 00:08:43,510 --> 00:08:45,770 I am GITTOES invisible. 127 00:08:46,190 --> 00:08:46,690 OK. 128 00:08:46,870 --> 00:08:50,480 I am the dies in visible. 129 00:08:51,340 --> 00:08:51,910 OK. 130 00:08:52,180 --> 00:08:56,000 And then I need to actually put in a pair of round brackets here after my Meffert name. 131 00:08:56,290 --> 00:09:01,560 And then I need to actually open and close this method by using these curly braces. 132 00:09:01,630 --> 00:09:17,200 So inside of this Smurfette I can just type in IMJ dice that sets visibility view OK dot invisible as 133 00:09:17,200 --> 00:09:18,190 you can see here. 134 00:09:18,550 --> 00:09:25,840 I created MFH here and inside of this never I just put one line of code here one statement or MGD that 135 00:09:25,840 --> 00:09:28,810 said visibility view that invisible. 136 00:09:28,810 --> 00:09:36,100 So when ever that I call the Smurfette in my program inside of any Meffert such as this uncreate if 137 00:09:36,120 --> 00:09:41,080 it is going actually going so I tried this method OK. 138 00:09:41,260 --> 00:09:46,470 And then it's going to execute this line of code here and then it's gonna make that IMT dies invisible. 139 00:09:46,480 --> 00:09:55,300 So this actually creates another MF With private Voyt and the name of my Minford this time is make between 140 00:09:56,410 --> 00:10:03,170 restart invisible and then I need to actually put in a pair of round brackets here after my name. 141 00:10:03,400 --> 00:10:07,020 And then I need to actually open and close my Meffert by using these curly braces.