1 00:00:00,240 --> 00:00:03,800 So as you can see here this is the effort that I actually pasted here. 2 00:00:03,810 --> 00:00:07,160 These are the lines of code that I actually pasted here. 3 00:00:07,470 --> 00:00:11,480 And as you can see the Axis modifier of the Smurfit is public. 4 00:00:11,490 --> 00:00:18,720 The return type of this method is actually map and the name of this method is get beat map from you 5 00:00:18,720 --> 00:00:19,290 r l. 6 00:00:19,350 --> 00:00:24,230 OK so if you want to we want to actually get an image from the u r l that we passed to this method. 7 00:00:24,240 --> 00:00:24,690 OK. 8 00:00:24,960 --> 00:00:28,140 And the type of that image is going to be bitmap. 9 00:00:28,140 --> 00:00:29,430 This is very important. 10 00:00:29,490 --> 00:00:34,410 So as you can see here this if it actually accepts an argument of type strange and the name of this 11 00:00:34,410 --> 00:00:38,370 argument is strange u r l and inside the Smurfette. 12 00:00:38,370 --> 00:00:40,020 So now we are inside of this Meffert. 13 00:00:40,020 --> 00:00:40,520 OK. 14 00:00:40,680 --> 00:00:48,510 So in line 74 I created an object of type bitmap and that as you can see the name of this object is 15 00:00:48,510 --> 00:00:49,570 bitmap. 16 00:00:49,680 --> 00:00:53,250 And then I assign the value null to this object. 17 00:00:53,550 --> 00:00:56,540 And as you can see here we have this try catch block here. 18 00:00:56,550 --> 00:01:02,070 So inside the try block as you can see I have these lines of code in order to actually download the 19 00:01:02,070 --> 00:01:05,810 image from the internet and assign that image to this bitmap object. 20 00:01:05,820 --> 00:01:13,650 So here a line 74 77 I created an object of type u r l and the name of this object is you are an assignment 21 00:01:13,680 --> 00:01:17,640 operator new u r l and the past is of value. 22 00:01:17,640 --> 00:01:25,120 This string value as an argument to the constructor as you can see here to this class string you are 23 00:01:25,120 --> 00:01:25,490 ill. 24 00:01:25,680 --> 00:01:28,670 And we are actually assigning that value to this object. 25 00:01:28,860 --> 00:01:29,320 OK. 26 00:01:29,520 --> 00:01:31,550 So now we have that u r l here. 27 00:01:31,920 --> 00:01:38,010 And in light 78 as you can see here I created an object of the input stream and the name of this object 28 00:01:38,010 --> 00:01:39,050 is input stream. 29 00:01:39,150 --> 00:01:40,330 Assignment operator. 30 00:01:40,470 --> 00:01:44,530 So here I referred to the name of this you are an object that open stream. 31 00:01:44,550 --> 00:01:49,830 So here it is very important that you call this method open stream in order because you want to download 32 00:01:50,280 --> 00:01:51,620 the image from this model. 33 00:01:51,630 --> 00:01:55,570 Here we need to call this method open stream on this object you are in. 34 00:01:55,590 --> 00:01:56,090 OK. 35 00:01:56,190 --> 00:01:59,240 And then we are assigning that value to the input stream object. 36 00:01:59,250 --> 00:02:05,550 So now we initialized this input stream object and line 79 as you can see. 37 00:02:05,550 --> 00:02:12,380 Now I want to initialize this bitmap object so bitmap assignment operator bitmap factory that D-CT stream. 38 00:02:12,510 --> 00:02:18,000 So this is actually a static method inside this bitmap vector the class in order to decode in order 39 00:02:18,000 --> 00:02:20,430 to decode the stream input stream. 40 00:02:20,580 --> 00:02:24,840 OK so this is how we actually download the image from the Internet and we assign that to the bitmap 41 00:02:24,900 --> 00:02:25,480 object. 42 00:02:25,530 --> 00:02:31,110 So as you can see here I initialize this bitmap object he had and as scientist value to this bitmap 43 00:02:31,140 --> 00:02:31,590 object. 44 00:02:31,590 --> 00:02:32,260 OK. 45 00:02:32,670 --> 00:02:34,860 And then we have this catch block here. 46 00:02:34,860 --> 00:02:40,800 So in case we cannot actually download the image from the Internet or the internet connection is actually 47 00:02:41,460 --> 00:02:47,190 there is no internet connection and it's going to actually catch those errors and it's going to output 48 00:02:47,280 --> 00:02:50,690 those letters to the lug that pre-date stack trace. 49 00:02:51,150 --> 00:02:53,890 And here we have this written bitmap. 50 00:02:54,000 --> 00:02:54,760 OK. 51 00:02:55,060 --> 00:02:58,610 We could actually put this written bitmap inside this tripe like. 52 00:02:58,810 --> 00:02:59,470 OK. 53 00:02:59,700 --> 00:03:06,690 But we can actually put it outside of this trope like it doesn't really matter. 54 00:03:06,720 --> 00:03:07,290 OK. 55 00:03:07,580 --> 00:03:11,830 So I mean it is enough for this class. 56 00:03:12,060 --> 00:03:18,570 And now let's actually go inside our main activity of a fight here and then let's actually declare some 57 00:03:18,630 --> 00:03:24,090 user interface components here as you can see so inside our activity underline minute exam and as you 58 00:03:24,090 --> 00:03:28,840 can see here we have type artist name collection name rank name and kind. 59 00:03:29,010 --> 00:03:29,550 OK. 60 00:03:29,550 --> 00:03:33,660 So let's actually put those objects here inside that main activity class. 61 00:03:33,660 --> 00:03:38,970 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 00:03:38,970 --> 00:03:39,740 on here. 63 00:03:39,780 --> 00:03:46,280 So here as you can see I declared these objects and these are the lines of code that I actually put 64 00:03:46,510 --> 00:03:48,110 put inside the main activity class. 65 00:03:48,120 --> 00:03:54,870 So the first object is takes UTX the artist name takes to type as you can see here takes the kind takes 66 00:03:54,870 --> 00:03:58,250 the collection name DHT track name as you can see here. 67 00:03:58,560 --> 00:03:59,560 I m g art. 68 00:03:59,580 --> 00:04:01,650 So let's go back to our right to beauty and alignment. 69 00:04:01,680 --> 00:04:07,020 I mean that is I mean that's actually double click on this image here for the ID just type it just as 70 00:04:07,110 --> 00:04:07,800 assigned a value. 71 00:04:07,850 --> 00:04:12,600 AMG art and then present Enter key on your keyboard. 72 00:04:12,930 --> 00:04:15,920 So let's go back to our main activity class as you can see here. 73 00:04:16,290 --> 00:04:20,860 And here I have this variable strange IMJ RL. 74 00:04:21,270 --> 00:04:29,760 OK I will put reduce this value later and in line 21 as you can see I declared an object of type button. 75 00:04:29,780 --> 00:04:33,260 So the name of this button is bitti and retrieve info. 76 00:04:33,510 --> 00:04:37,190 So let's go back to an activity underline that it may not examine as you can see here. 77 00:04:37,290 --> 00:04:42,850 Let's double click on the spot in here as you can see the idea of the spot it is BT and get data. 78 00:04:43,020 --> 00:04:49,930 So I can change the name the name of this button that I declared in my main activity class to PTEN get 79 00:04:49,940 --> 00:04:53,890 the data PTEN get data. 80 00:04:54,300 --> 00:04:58,220 And in line 22 I declared another takes. 81 00:04:58,350 --> 00:05:02,380 So we don't need this object here. 82 00:05:02,510 --> 00:05:07,970 And as you can see here we have actually declared this object of type bitmap. 83 00:05:08,000 --> 00:05:14,810 OK so now let's actually initialize these objects that we actually declared inside our main activity 84 00:05:14,810 --> 00:05:15,410 class. 85 00:05:15,590 --> 00:05:17,790 So the first object is going to be the artist name. 86 00:05:17,810 --> 00:05:21,630 OK so the artist name assignment operator. 87 00:05:21,770 --> 00:05:31,540 So now let's cast this object to a text view object find view by ID or that Id dot asks the artist name. 88 00:05:31,880 --> 00:05:34,730 So now let's actually put a semicolon at the end of our statement. 89 00:05:34,970 --> 00:05:41,680 So then the next object that we want to instantiate here inside uncreate if it is going to be the type. 90 00:05:41,810 --> 00:05:48,860 So it takes the type that assignment operator is BTC type assignment operator. 91 00:05:48,860 --> 00:05:59,010 So now let's test this object to a taste object find view by id artist Id dot X the type and then let's 92 00:05:59,010 --> 00:06:01,400 actually put a semicolon at the end of our statement. 93 00:06:01,600 --> 00:06:05,100 And now let's actually initialize this takes the kind. 94 00:06:05,100 --> 00:06:09,920 So I just need to refer to the name of this object the kind assignment operator. 95 00:06:09,920 --> 00:06:18,210 So now let's cast this object to a taste view object find view by id artist Id that takes the kind. 96 00:06:18,410 --> 00:06:19,430 As you can see here. 97 00:06:19,440 --> 00:06:24,900 So let's actually put a semicolon at the end of her statement and then let's actually initialize this 98 00:06:25,080 --> 00:06:26,440 takes the collection name. 99 00:06:26,600 --> 00:06:32,140 So takes the th the collection name assignment operator. 100 00:06:32,160 --> 00:06:39,750 So now let's cast this object to it takes a view object find view by id art that ID that takes the collection 101 00:06:39,750 --> 00:06:45,160 name and then lets actually put a semi-colon at the end of our statement here. 102 00:06:45,630 --> 00:06:49,530 And then let's actually instantiate this takes the Tracht name. 103 00:06:49,530 --> 00:06:54,070 So th the throuch name assignment operator. 104 00:06:54,090 --> 00:07:03,810 So now this has recast this object to a Takes view object find view by id r that ID that takes the training 105 00:07:04,860 --> 00:07:08,540 and then they actually put a semicolon at the end of our statement. 106 00:07:09,620 --> 00:07:14,400 And then let's actually initialize this image view here IMT art. 107 00:07:14,450 --> 00:07:17,180 So I just need to revert to the name of this object. 108 00:07:17,190 --> 00:07:19,670 I m g art assignment operator. 109 00:07:19,970 --> 00:07:30,370 And then let's actually test this object to a image object find view by id r that ID that m g r. 110 00:07:30,770 --> 00:07:34,100 And then let's actually put a semicolon at the end of our statement. 111 00:07:34,130 --> 00:07:38,130 So then let's actually initialize this beauty and get data object. 112 00:07:38,150 --> 00:07:45,560 So PTEN get the assignment operator and then essentially cast this object to a button object find view 113 00:07:45,560 --> 00:07:49,990 by ID or that ID that PTEN get data. 114 00:07:50,330 --> 00:07:53,510 And then let's actually put a semicolon at the end of our statement. 115 00:07:54,060 --> 00:07:57,280 And now inside our main activity class. 116 00:07:57,350 --> 00:08:03,530 So after the end in brace of this uncreate method inside our main activity class we need to actually 117 00:08:03,530 --> 00:08:08,550 create an inner class to do the job to do the asynchronous jobs. 118 00:08:08,570 --> 00:08:08,980 OK. 119 00:08:09,020 --> 00:08:13,650 Because we don't want to actually block the user interface Fred. 120 00:08:13,700 --> 00:08:16,980 OK we don't want to plug the main thread of our application. 121 00:08:17,090 --> 00:08:24,560 We want to actually put the job of downloading that stuff or that image from the internet in the background 122 00:08:24,560 --> 00:08:25,220 for it Fred. 123 00:08:25,250 --> 00:08:25,810 OK. 124 00:08:25,940 --> 00:08:31,430 We don't want to actually block or actually put heavy jobs on the main flight. 125 00:08:31,460 --> 00:08:32,350 It's very bad. 126 00:08:32,450 --> 00:08:33,020 OK. 127 00:08:33,110 --> 00:08:39,620 We need to actually do their job of downloading the stuff or downloading the image from Twitter from 128 00:08:39,620 --> 00:08:41,690 the internet in the background for it. 129 00:08:41,690 --> 00:08:47,780 So in order to do that we need to actually create an entire class in order to do that job for us. 130 00:08:47,780 --> 00:08:52,820 So inside the main activity class I'm going to actually pay that class here and then I'm going to explain 131 00:08:52,820 --> 00:08:55,520 to you what's going on here. 132 00:08:55,550 --> 00:09:01,520 So as you can see here I pasted this class here inside our main activity class and now I'm going to 133 00:09:01,640 --> 00:09:03,770 explain to you what's going on here. 134 00:09:03,830 --> 00:09:08,780 So this is the class OK these are the lines of code that I actually pasted here and now I'm going I 135 00:09:08,780 --> 00:09:12,970 try to explain to you what is this class and what does this class do. 136 00:09:12,980 --> 00:09:20,420 So in 947 as you can see here the axis modifier of this class is private and it is actually a class 137 00:09:20,510 --> 00:09:21,190 as you can see. 138 00:09:21,230 --> 00:09:25,370 And as you can see here the name of our class is Jason right. 139 00:09:25,380 --> 00:09:26,980 Hume's stuff Pasch. 140 00:09:27,140 --> 00:09:33,690 OK this is the task of actually downloading this stuff and the image from the Internet. 141 00:09:33,710 --> 00:09:36,150 So if you need to put this task in the background for it. 142 00:09:36,320 --> 00:09:38,630 So it is going to be an asynchronous task. 143 00:09:38,630 --> 00:09:39,050 OK. 144 00:09:39,260 --> 00:09:42,060 So this class extends from this async task. 145 00:09:42,290 --> 00:09:45,410 And as you can see here we need to pass three arguments to this class. 146 00:09:45,470 --> 00:09:47,430 The first one is going to be the input. 147 00:09:47,510 --> 00:09:50,910 So remember that we want to actually get the data from an u r l. 148 00:09:50,920 --> 00:09:59,040 OK we actually assign a u r l and then B we actually get the data from the Internet to some stuff. 149 00:09:59,070 --> 00:10:02,510 The RL is going to be of types three past that you are. 150 00:10:02,540 --> 00:10:04,880 Which is strange here. 151 00:10:05,630 --> 00:10:11,720 And this void here the second argument is going to actual return to us the units of progress if you 152 00:10:11,720 --> 00:10:15,930 want to actually know how much of the contents is actually maynt. 153 00:10:16,250 --> 00:10:19,850 And we can actually get those data here as well as the second argument. 154 00:10:19,850 --> 00:10:24,240 So here for our specific application we get we don't want to get those data. 155 00:10:24,470 --> 00:10:30,230 So we pass the value voyde with Capitol V and for the first argument this is going to be the output 156 00:10:30,710 --> 00:10:34,260 the output that is going to be returned from this class. 157 00:10:34,310 --> 00:10:40,200 We want to get the items stuff we want to get the data that is inside the iTunes service and we want 158 00:10:40,210 --> 00:10:42,150 to put those data into our application. 159 00:10:42,260 --> 00:10:42,860 OK. 160 00:10:42,860 --> 00:10:45,350 So the past that you are ill which is off the street. 161 00:10:45,500 --> 00:10:53,000 And if you get those data that is actually of type items stuff the information that is inside of the 162 00:10:53,000 --> 00:10:54,190 items we have service. 163 00:10:54,350 --> 00:11:01,250 So this is going to be the output this is input this is output remember and here as you can see inside 164 00:11:01,250 --> 00:11:05,730 this class like actually declared an object of type context. 165 00:11:05,780 --> 00:11:09,130 As you can see here and the name of this object is context. 166 00:11:09,230 --> 00:11:14,600 And here again I actually declared an object of type Procrustes dialogue in order to show to the user 167 00:11:14,810 --> 00:11:17,710 that something is actually downloading from the Internet. 168 00:11:17,720 --> 00:11:20,160 So I need to actually declare this object here. 169 00:11:20,570 --> 00:11:28,740 And then I created a constructor for this class so public Dayton's Jason iTunes stuff Pasch. 170 00:11:28,910 --> 00:11:33,930 So remember the name of the constructor must be the same as the name of the class Dasen items stuff 171 00:11:33,950 --> 00:11:34,540 ask. 172 00:11:34,610 --> 00:11:39,360 And this class this is constructed actually to access an argument of type context. 173 00:11:39,380 --> 00:11:46,130 So as you can see here the name of this argument is context as you can see here at inside the constructor 174 00:11:46,130 --> 00:11:46,770 here. 175 00:11:46,850 --> 00:11:53,720 I am actually initializing this context object so does that context assignment operator context. 176 00:11:53,720 --> 00:12:00,630 So here I am actually passing this context that I actually receive as an argument from the constructor. 177 00:12:00,690 --> 00:12:04,040 What does this context here that is inside of my class. 178 00:12:04,050 --> 00:12:06,200 This day use stuff past class. 179 00:12:06,200 --> 00:12:06,970 OK. 180 00:12:07,130 --> 00:12:15,350 See here I am actually initialising this object and then 11:57 I am actually initialising this progress. 181 00:12:15,350 --> 00:12:21,200 They lack insight this constructor's of progress they lag assignment operator new progress dialog and 182 00:12:21,200 --> 00:12:22,770 then have to pass the context. 183 00:12:22,820 --> 00:12:26,060 OK so here that I actually initialized this context. 184 00:12:26,060 --> 00:12:31,710 Now I am actually passing this context that we receive as an argument of this const constructor here. 185 00:12:31,790 --> 00:12:32,630 OK. 186 00:12:33,110 --> 00:12:38,430 And then in in lines fretty free free for two sixty nine. 187 00:12:38,480 --> 00:12:40,600 We have this on the execute method. 188 00:12:40,610 --> 00:12:46,040 So this if it is going to be executed right before the task of downloading the data from the Internet. 189 00:12:46,040 --> 00:12:46,560 OK. 190 00:12:46,700 --> 00:12:47,770 So Henri. 191 00:12:47,810 --> 00:12:51,550 And then we need to actually call this faith superba execute. 192 00:12:51,830 --> 00:12:57,410 So it can actually call the supervision version of this Meffert on pre execute and then in line sixty 193 00:12:57,550 --> 00:13:01,480 six I've referred to the name of this object progress dialog. 194 00:13:01,880 --> 00:13:05,690 That said title downloading info from iTunes. 195 00:13:05,690 --> 00:13:06,820 Please wait. 196 00:13:06,840 --> 00:13:09,650 So it is going to actually set the title for this progress. 197 00:13:09,670 --> 00:13:12,310 De-lurk and it inline 6:54. 198 00:13:12,410 --> 00:13:17,090 I am calling the Shoma of it on progress they like so progress they like that show. 199 00:13:17,780 --> 00:13:19,950 So it's going to show the user the progress they like. 200 00:13:19,970 --> 00:13:20,310 OK.