1 00:00:00,150 --> 00:00:04,540 So here let's actually go back and say discrete beauty at the java file here. 2 00:00:04,800 --> 00:00:08,670 Now I'm going actually pasting some lines of code and then I'm going to explain to you what's going 3 00:00:08,670 --> 00:00:09,260 on here. 4 00:00:09,270 --> 00:00:13,610 So as you can see here these are the lines of code that I actually pasted here. 5 00:00:13,620 --> 00:00:19,230 So first of all I created an array of integer values as you can see here the name of this art is animate 6 00:00:19,260 --> 00:00:20,040 images. 7 00:00:20,070 --> 00:00:26,400 So here I am actually referring to the ID of my image inside these tribal Forder as you can see inside 8 00:00:26,460 --> 00:00:28,540 our project we have this tribal folder. 9 00:00:28,560 --> 00:00:33,930 So I just referred to the idea of these images as you can see are that triable that bear and the other 10 00:00:33,930 --> 00:00:38,640 images and you have an arrow of string values as you can see here. 11 00:00:38,640 --> 00:00:44,090 So here I actually signed the name of odd animals to this Aure animal names. 12 00:00:44,340 --> 00:00:44,820 OK. 13 00:00:45,000 --> 00:00:48,840 So now let's actually create a context. 14 00:00:48,870 --> 00:00:51,100 OK so context context. 15 00:00:51,210 --> 00:00:57,600 So here I just want to declare this context object and noun texturally create a constructor for this 16 00:00:57,830 --> 00:01:03,090 great view adapter class so I can just type in public view adapter. 17 00:01:03,120 --> 00:01:07,360 So the name of your constructor must be the same as the name of your class. 18 00:01:07,410 --> 00:01:08,010 OK. 19 00:01:08,220 --> 00:01:14,970 And then I need to specify that this constructor actually that accepts an object of type context. 20 00:01:14,970 --> 00:01:23,340 So here I can just type in context context and then here in say that these constructor can actually 21 00:01:24,630 --> 00:01:29,260 initialize these are context objects that are actually declared in line 20. 22 00:01:29,340 --> 00:01:35,520 So here I can just type in this that context assignment operator context. 23 00:01:35,730 --> 00:01:39,810 OK so this context as you can see refers to this instance valuable. 24 00:01:39,930 --> 00:01:42,900 And this context refers to this argument. 25 00:01:42,910 --> 00:01:49,350 OK so now let's actually put in our own implementations inside of these other methods. 26 00:01:49,350 --> 00:01:51,120 So the first effort is good. 27 00:01:51,130 --> 00:01:56,820 Count OK as you can see if it is public the return type of this method is int integer so these Minford 28 00:01:57,020 --> 00:02:01,710 on it's to return a value of type integer and the name of this if it is get count. 29 00:02:01,710 --> 00:02:07,690 So we need to actually return the number of elements that are inside of these for example animal images. 30 00:02:07,700 --> 00:02:08,090 Ari. 31 00:02:08,120 --> 00:02:08,620 OK. 32 00:02:08,910 --> 00:02:15,300 So here I could just return animal images that land. 33 00:02:15,710 --> 00:02:16,430 OK. 34 00:02:16,710 --> 00:02:19,070 And we have here this. 35 00:02:19,100 --> 00:02:23,750 I get either Mefford and this get item if it returns an object. 36 00:02:23,790 --> 00:02:24,240 OK. 37 00:02:24,390 --> 00:02:29,370 So here as you can see it is if it actually accepts an argument of type integer position. 38 00:02:29,370 --> 00:02:35,180 So is this method actually gives us this position the position about items inside of the array. 39 00:02:35,250 --> 00:02:37,280 So here I need to actually to return. 40 00:02:37,300 --> 00:02:41,740 Are there specific values that are for example in say that these animal images. 41 00:02:42,140 --> 00:02:48,420 OK the specific images that are inside of this specific indexes of these Ari OK. 42 00:02:48,690 --> 00:02:57,090 So here in the inside These are get item if I could just 310 these animal images stop position. 43 00:02:57,240 --> 00:03:01,370 So as you can see here we received the position of our animals as an argument. 44 00:03:01,410 --> 00:03:08,850 So we receive the position or the index of our animals inside of these animal images as an argument 45 00:03:08,880 --> 00:03:10,910 to the Smurfit as you can see here. 46 00:03:11,250 --> 00:03:14,710 So here we have this get item ID. 47 00:03:14,790 --> 00:03:22,410 OK so the idea of identity as you can see we receive the index or the position of our values inside 48 00:03:22,410 --> 00:03:23,170 of our arrays. 49 00:03:23,190 --> 00:03:27,870 As you can see for example this animal images are a reason for this value is at index 0. 50 00:03:27,880 --> 00:03:31,410 OK so this would be the ID of our items. 51 00:03:31,410 --> 00:03:34,760 So here I could just return this position as an ID. 52 00:03:34,800 --> 00:03:35,250 OK. 53 00:03:35,290 --> 00:03:36,150 Item ID. 54 00:03:36,150 --> 00:03:38,950 And here we need to actually implement this method. 55 00:03:39,120 --> 00:03:44,940 So it's actually did it this line of code here and here we could actually are putting in our own implementations 56 00:03:44,940 --> 00:03:46,090 inside of this Moffit. 57 00:03:46,260 --> 00:03:47,830 So this is really important. 58 00:03:47,980 --> 00:03:53,040 And this it is going to be called on every iteration of our values. 59 00:03:53,050 --> 00:03:56,330 Inside there are actually the great view. 60 00:03:56,400 --> 00:03:57,090 OK. 61 00:03:57,450 --> 00:04:03,000 So now I'm going to paste in some lines of code here and then I'm going to explain to you what's going 62 00:04:03,000 --> 00:04:03,960 on here. 63 00:04:04,440 --> 00:04:10,190 So as you can see here these are the lines of code that I actually pasted here inside of this method. 64 00:04:10,380 --> 00:04:15,840 So first about in line 50 I actually created an object of type image view. 65 00:04:15,870 --> 00:04:16,340 OK. 66 00:04:16,440 --> 00:04:23,550 And the name of this image is I give you assignment operator and here I am actually instantiating this 67 00:04:23,550 --> 00:04:26,560 object by putting this new keyword image view. 68 00:04:26,700 --> 00:04:31,470 And for the context of this image view class I need to put in this context here. 69 00:04:31,590 --> 00:04:35,270 OK this is required an in line 51. 70 00:04:35,460 --> 00:04:41,480 I actually want to set the image for this image view so IMJ view that seems set image resource. 71 00:04:41,760 --> 00:04:45,800 I want to actually return the image to this MFL. 72 00:04:45,810 --> 00:04:51,360 So I just need to refer to the name of these animal images Arrey as you can see here we have these images 73 00:04:52,770 --> 00:04:55,230 and animal images supposition. 74 00:04:55,320 --> 00:05:00,990 OK so we actually received the position of our animals inside of this Ali an argument to these kids 75 00:05:00,990 --> 00:05:04,010 view Meffert OK animal images supposition. 76 00:05:04,320 --> 00:05:04,820 OK. 77 00:05:04,920 --> 00:05:12,690 So it's going to actually assigned those images to this image of you here and you have this line of 78 00:05:12,690 --> 00:05:13,150 code here. 79 00:05:13,170 --> 00:05:15,300 I can give you that set the layout Department. 80 00:05:15,510 --> 00:05:21,810 So the layout part is actually going to specify the weight and the height of our image views inside 81 00:05:21,840 --> 00:05:22,800 of great view. 82 00:05:22,860 --> 00:05:30,720 As you can see here inside these inside these emulator we can see this great view here and you can see 83 00:05:30,720 --> 00:05:36,170 that the width and height of these image views inside of this great view. 84 00:05:36,300 --> 00:05:36,790 OK. 85 00:05:36,930 --> 00:05:41,190 So here I just inside the Prentice's I put in the new keyboard. 86 00:05:41,190 --> 00:05:41,860 Great view. 87 00:05:41,880 --> 00:05:47,760 So because these images are actually inside of the screen view first when it was actually the to the 88 00:05:47,760 --> 00:05:48,800 name of the parents. 89 00:05:48,810 --> 00:05:49,330 OK. 90 00:05:49,410 --> 00:05:52,180 So the great view is the parent of these images. 91 00:05:52,200 --> 00:05:52,760 OK. 92 00:05:52,830 --> 00:05:56,370 So first I need to refer to the name of this parent or great view. 93 00:05:56,380 --> 00:06:03,790 Ok thought lay out perhaps and then I can actually specify the width and height of my images. 94 00:06:03,810 --> 00:06:04,400 OK. 95 00:06:04,470 --> 00:06:06,050 So this is very important. 96 00:06:06,540 --> 00:06:08,170 And here we have this. 97 00:06:08,190 --> 00:06:10,020 I interviewed that said the padding. 98 00:06:10,080 --> 00:06:14,440 So this is the padding of our images inside of this great view. 99 00:06:14,480 --> 00:06:14,920 OK. 100 00:06:15,120 --> 00:06:22,470 Ten for the left 10 for the top 10 for the right and 10 for the bottom and in line are 54 as you can 101 00:06:22,470 --> 00:06:27,030 see I am specifying the scale type of my image view. 102 00:06:27,070 --> 00:06:34,290 I give you that set scale type image view that said scale type that center crop as you can see here 103 00:06:34,460 --> 00:06:40,610 this image views are actually at the center cropped as you can see here inside of this great view. 104 00:06:41,070 --> 00:06:43,320 And you can actually specify other values too. 105 00:06:43,470 --> 00:06:44,460 OK. 106 00:06:44,790 --> 00:06:54,660 So for example I could just delete this value here and I can just typing image view that SKAIFE type 107 00:06:55,030 --> 00:06:55,850 that. 108 00:06:56,010 --> 00:06:57,920 And here you can specify these values. 109 00:06:58,050 --> 00:06:59,830 For example feats x y. 110 00:06:59,960 --> 00:07:00,660 OK. 111 00:07:01,110 --> 00:07:06,080 And here I actually make these I am making this up. 112 00:07:06,240 --> 00:07:10,180 I m g view object a listener to the clicks of the user. 113 00:07:10,380 --> 00:07:16,200 OK so I can give you as you can see here that sets unclick listener. 114 00:07:16,480 --> 00:07:19,240 OK I interviewed that said Uncle listener. 115 00:07:19,440 --> 00:07:24,210 And as you can see here I am creating an anonymous in a class here. 116 00:07:24,290 --> 00:07:24,610 OK. 117 00:07:24,610 --> 00:07:29,620 Inside of this method inside of it inside of these gates view Meffert. 118 00:07:29,940 --> 00:07:31,920 And here I created a toast. 119 00:07:32,100 --> 00:07:36,600 OK toast that make text first I need to specify the context. 120 00:07:36,660 --> 00:07:37,270 OK. 121 00:07:37,470 --> 00:07:41,420 And then second I need to specify the text that I want to show to the user. 122 00:07:41,490 --> 00:07:44,270 OK the name of the animal is animal image. 123 00:07:44,340 --> 00:07:45,210 Animal names. 124 00:07:45,240 --> 00:07:47,480 So here I referred to these animal names. 125 00:07:47,490 --> 00:07:51,790 Ari as you can see these are a holds are the names of my animals. 126 00:07:51,920 --> 00:07:54,790 Ok animals supposition. 127 00:07:54,870 --> 00:08:00,450 So as you can see if we received the position of our animals as an argument here as you can see. 128 00:08:00,780 --> 00:08:04,510 And here I am specifying the duration of my toast. 129 00:08:04,650 --> 00:08:05,220 OK. 130 00:08:05,400 --> 00:08:07,740 Toss that dotted line short. 131 00:08:07,830 --> 00:08:11,150 And here I am calling them if it's show on this toast. 132 00:08:11,190 --> 00:08:11,820 OK. 133 00:08:12,060 --> 00:08:17,730 So here as you can see it's showing us an error and it says that because we are actually inside of an 134 00:08:17,910 --> 00:08:24,780 inner class and anonymous in a class the this our position valuable disposition argument needs to be 135 00:08:24,780 --> 00:08:25,290 final. 136 00:08:25,340 --> 00:08:25,620 OK. 137 00:08:25,620 --> 00:08:31,460 Valuable position is accessed from within in class needs to be declared final. 138 00:08:31,470 --> 00:08:38,950 So here I could just put in the final keyword here and now as you can see the error is gone. 139 00:08:39,140 --> 00:08:43,320 OK so here I am actually returning this item do you object. 140 00:08:43,320 --> 00:08:48,630 So because this method actually returns an object of type review. 141 00:08:48,840 --> 00:08:54,770 OK we could an image is actually a subclass of view. 142 00:08:54,840 --> 00:08:56,750 We can actually return I interview. 143 00:08:56,910 --> 00:08:57,420 OK. 144 00:08:57,630 --> 00:08:59,910 So here you can see these arguments. 145 00:08:59,920 --> 00:09:02,420 Position view and view group. 146 00:09:02,420 --> 00:09:07,440 So let's actually change the name of this view argument to view here. 147 00:09:07,440 --> 00:09:08,140 OK. 148 00:09:08,670 --> 00:09:14,340 So I think that's enough for this class structure actually to go back and say this main activity of 149 00:09:14,340 --> 00:09:14,960 a file. 150 00:09:15,210 --> 00:09:19,850 And then here let's actually create an object from this great view adapter. 151 00:09:19,860 --> 00:09:27,060 So here I can just type in great view adapter adapter assignment operator new and here again I need 152 00:09:27,060 --> 00:09:30,610 to refer to the name of this great view adapter class. 153 00:09:30,870 --> 00:09:34,970 And here for the constructor of this class I need to specify the context. 154 00:09:35,100 --> 00:09:38,480 So the context is main activity that this. 155 00:09:38,880 --> 00:09:40,290 OK semicolon. 156 00:09:40,530 --> 00:09:43,140 OK the name of this class is the const is the context. 157 00:09:43,140 --> 00:09:43,550 OK. 158 00:09:43,620 --> 00:09:47,930 And here I need to refer to the name of discrete view here as you can see. 159 00:09:48,090 --> 00:09:52,220 So g r the view that sets adapter. 160 00:09:52,620 --> 00:09:53,120 OK. 161 00:09:53,250 --> 00:09:56,540 And here we need to put in the adapter adapter. 162 00:09:56,810 --> 00:09:57,440 OK. 163 00:09:57,450 --> 00:10:00,380 So let's actually run on our project and see what happens. 164 00:10:00,450 --> 00:10:05,660 So here as you can see our application is running on this emulator and this is that takes. 165 00:10:05,670 --> 00:10:08,980 These are the images of our animals in a great view. 166 00:10:09,150 --> 00:10:12,050 And here at the bottom you can see this great view here. 167 00:10:12,060 --> 00:10:12,950 OK. 168 00:10:13,340 --> 00:10:14,320 You can see these images. 169 00:10:14,340 --> 00:10:19,320 And if I click on this image for example it says the name of the animal is bird and if you click on 170 00:10:19,320 --> 00:10:27,090 these fish here the name of the animal is fish or for example this lion the name of the animal is lion 171 00:10:27,180 --> 00:10:30,660 and tiger the name of the animal is Tiger. 172 00:10:31,050 --> 00:10:32,640 So hopefully that makes sense. 173 00:10:32,640 --> 00:10:35,300 And I think that's enough for this theater. 174 00:10:35,490 --> 00:10:40,800 And if you have any questions please post the discussion in the course and then I'll do my best to answer 175 00:10:40,860 --> 00:10:42,050 all of your questions. 176 00:10:42,210 --> 00:10:44,990 Thank you very much for watching and I'll see you in the next year. 177 00:10:45,030 --> 00:10:45,370 Tauriel.