1 00:00:00,630 --> 00:00:07,890 And here are actually I need to show this program Stalock to the user so I can just type in progress 2 00:00:07,990 --> 00:00:12,670 larg progress dialog that show. 3 00:00:12,780 --> 00:00:18,690 So now it's going actually show this message to the user on this preexist cute method and here as you 4 00:00:18,690 --> 00:00:21,120 can see I mean scientists doing background. 5 00:00:21,180 --> 00:00:25,940 So this is the Meffert that is actually going to download the image from the internet in the background. 6 00:00:25,940 --> 00:00:28,260 The key not the user interface for it. 7 00:00:28,290 --> 00:00:31,190 So let's actually delete this line of code here returns. 8 00:00:31,530 --> 00:00:36,600 And here I'm actually putting some lines of code here so I'm going to paste in some lines of code here 9 00:00:36,630 --> 00:00:39,290 and then I'm going explain to you what's going on here. 10 00:00:39,390 --> 00:00:44,520 So as you can see here these are the lines of code that actually pasted here. 11 00:00:44,790 --> 00:00:49,410 And inside this method as you can see I created of the table of type. 12 00:00:49,420 --> 00:00:51,760 Strange as you can see here in line 18. 13 00:00:51,870 --> 00:00:54,230 And the name of this valuable is strange. 14 00:00:54,240 --> 00:00:56,970 You are an assignment operator. 15 00:00:57,180 --> 00:01:00,040 So here I'll refer to this part arms array. 16 00:01:00,090 --> 00:01:03,160 So remember is permitted is actually of type. 17 00:01:03,210 --> 00:01:08,310 Ali I told you about this type of Aure in the jobs section of the course. 18 00:01:08,340 --> 00:01:08,890 OK. 19 00:01:09,250 --> 00:01:11,210 Putnam's as you can see here. 20 00:01:11,700 --> 00:01:14,880 And here I am actually putting this Index index zero. 21 00:01:15,090 --> 00:01:15,670 OK. 22 00:01:15,990 --> 00:01:19,490 So here as you can see I have this Aure and this is going to be the index 0. 23 00:01:19,500 --> 00:01:26,460 And this means that when you want to actually download an image from the internet you need to actually 24 00:01:26,460 --> 00:01:36,300 pass a pedometer an argument in order to actually for example lead the application know that I want 25 00:01:36,300 --> 00:01:41,570 to download an image from the Internet's 5:22 you are able to that specific method. 26 00:01:41,620 --> 00:01:42,510 OK. 27 00:01:42,990 --> 00:01:45,210 And I'll show you that Meffert in a minute. 28 00:01:45,710 --> 00:01:48,910 And here as you can see this is going to be the data type of that method. 29 00:01:48,930 --> 00:01:51,070 As you can see and we have an array. 30 00:01:51,120 --> 00:01:51,690 OK. 31 00:01:52,020 --> 00:01:55,860 So the index zero of that array is going to be that you are. 32 00:01:55,940 --> 00:01:56,220 OK. 33 00:01:56,220 --> 00:02:01,890 Because I want to download an image only one image from the internet so you have only one of your RL 34 00:02:02,190 --> 00:02:08,410 so that you are it is going to be placed inside the index zero of this alley of this prom's addy. 35 00:02:08,460 --> 00:02:08,970 OK. 36 00:02:09,030 --> 00:02:12,340 So that's why I actually would put this perhaps. 37 00:02:12,440 --> 00:02:18,600 Here are you referred to the name of this Ali and I put this in zero here because I have I have only 38 00:02:18,600 --> 00:02:19,770 one you are. 39 00:02:19,890 --> 00:02:21,830 So I just put this you are a zero. 40 00:02:22,170 --> 00:02:28,400 And then it's going to actually download the image from the Internet by using that specific you are 41 00:02:28,410 --> 00:02:28,740 ill. 42 00:02:28,820 --> 00:02:30,980 He had that I actually specify here. 43 00:02:31,260 --> 00:02:34,230 So here you referred to the name of this part. 44 00:02:34,330 --> 00:02:34,760 OK. 45 00:02:34,880 --> 00:02:38,530 Perhaps Ari Suppe index zero as you can see here. 46 00:02:38,730 --> 00:02:40,900 So this is going to be that you all OK. 47 00:02:41,100 --> 00:02:46,860 And here I am assigning that specific humoral to this string you are in here that I actually created 48 00:02:46,860 --> 00:02:47,340 here. 49 00:02:47,430 --> 00:02:48,280 OK. 50 00:02:48,720 --> 00:02:56,790 And in light ativan I actually created an object of type bitmap and then I assigned a value to this 51 00:02:56,840 --> 00:02:57,900 bitmap object. 52 00:02:57,900 --> 00:03:00,790 So here I have this try catch exception here. 53 00:03:01,710 --> 00:03:08,760 And hid inside the trite statement here as you can see in the try block here I have this I have these 54 00:03:08,760 --> 00:03:09,590 lines of quote. 55 00:03:09,750 --> 00:03:15,320 First of all I created an object of type you r l and the name of this object is you are it. 56 00:03:15,720 --> 00:03:21,950 And here I am actually instantiating this you Arel by using this strange model that I created in line 57 00:03:22,030 --> 00:03:24,380 80 new you Ardell. 58 00:03:24,540 --> 00:03:30,450 So here I want to instantiate this you are an object by using this string you are that I actually get 59 00:03:31,550 --> 00:03:35,160 to use that one through example with an image from the Internet. 60 00:03:35,250 --> 00:03:39,080 So remember that I told you about this you are here. 61 00:03:39,160 --> 00:03:41,490 This is going to be inserted double quotes. 62 00:03:41,640 --> 00:03:42,850 So this is going to be. 63 00:03:42,860 --> 00:03:44,790 And actually when you are ill. 64 00:03:45,040 --> 00:03:47,050 So insight and anthrax to do. 65 00:03:47,070 --> 00:03:52,230 Now you can see that you want to actually use this strange model in order to download an image from 66 00:03:52,230 --> 00:03:53,150 the Internet. 67 00:03:53,190 --> 00:03:56,080 So that's why I created this you are an object. 68 00:03:56,310 --> 00:04:02,070 And then in order to download an image from the union we need to actually create an object of type input 69 00:04:02,070 --> 00:04:05,510 stream and the name of this object is in input stream. 70 00:04:05,610 --> 00:04:12,510 Assignment operator you are ill that open stream so it can actually open the website that we want to 71 00:04:12,510 --> 00:04:15,960 actually download an image from the Internet. 72 00:04:16,140 --> 00:04:19,520 And here I referred to the name of this bitmap object. 73 00:04:19,560 --> 00:04:20,090 OK. 74 00:04:20,310 --> 00:04:23,170 So bitmap factory D-CT stream. 75 00:04:23,190 --> 00:04:23,980 So it's clear here. 76 00:04:24,060 --> 00:04:29,280 This is going to actually download that specific Meffert that specific image from that stream. 77 00:04:29,280 --> 00:04:36,810 Here are two input stream that decode stream input stream or keep it back to the class that decode stream 78 00:04:36,840 --> 00:04:41,040 input stream so it can actually return an object of type bitmap. 79 00:04:41,040 --> 00:04:47,160 So it's going to actually assign that object to this bitmap object that is going to assign that image 80 00:04:47,190 --> 00:04:48,280 to this bitmap object. 81 00:04:48,280 --> 00:04:48,800 OK. 82 00:04:49,140 --> 00:04:51,570 And here I have this catch statement. 83 00:04:51,600 --> 00:04:55,430 So this catch block is going actually is going to be executed of any. 84 00:04:55,440 --> 00:05:01,500 For example when downloading the image from the Internet from the Internet is going to actually fail. 85 00:05:01,560 --> 00:05:07,700 So you need to catch this error here and we can actually put that to the log. 86 00:05:07,740 --> 00:05:10,380 So for example catch that print is text. 87 00:05:10,380 --> 00:05:14,170 It prints that traces can actually put the information to the lug. 88 00:05:14,640 --> 00:05:20,190 And here we are returning that object returned bitmap from the background. 89 00:05:20,220 --> 00:05:25,820 So when the image is actually downloaded from the Internet it's going to return. 90 00:05:26,340 --> 00:05:31,870 It's going to return the bitmap object and inside our unposed execute Meffert. 91 00:05:31,890 --> 00:05:36,110 As you can see we have this bitmap object as a pad image OK. 92 00:05:36,600 --> 00:05:43,110 I have this beaten up other object as a pad emitter as you can see this object that is returned from 93 00:05:43,110 --> 00:05:44,180 the screen background. 94 00:05:44,230 --> 00:05:49,290 It is going to be as a pad image here of this unposted execute. 95 00:05:49,320 --> 00:05:56,960 So this Meffert is going to be run on the UI for it so I can actually show that image to the user. 96 00:05:56,970 --> 00:06:00,710 So in order to do that again just take the image view that. 97 00:06:00,780 --> 00:06:06,050 So as you can see here I am referring to this image inside these outer class main activity class. 98 00:06:06,120 --> 00:06:11,470 So here I can just take an image that sets image bitmap as you can see here. 99 00:06:11,670 --> 00:06:16,440 I can actually assign an object of type bitmap here bitmap. 100 00:06:16,450 --> 00:06:23,640 OK so now because I am actually inside this and post execute Meffert and this means that this method 101 00:06:23,640 --> 00:06:31,380 actually runs on the UI thread I can actually I need to actually stop showing this progress day luck 102 00:06:31,710 --> 00:06:36,020 that I actually started showing here in line in an execute Nefert. 103 00:06:36,120 --> 00:06:38,670 I need to actually stop showing that progress. 104 00:06:38,670 --> 00:06:43,620 I like to use that because the image is actually downloaded from the internet so here I can't just create 105 00:06:43,620 --> 00:06:48,860 an if statement if progress dialog that is showing. 106 00:06:49,680 --> 00:06:58,180 And inside this statement I can't just they can progress they lag that dismiss so now let's say our 107 00:06:58,180 --> 00:06:59,920 project and see what happens. 108 00:07:00,100 --> 00:07:06,970 So before running our project as you can see I have this error here and I actually mistakenly assigned 109 00:07:07,030 --> 00:07:14,410 this rank ID for the speaker and download the actual ID of this PTEN download is between download image. 110 00:07:14,410 --> 00:07:14,880 OK. 111 00:07:14,920 --> 00:07:23,200 So let's actually change this up PTEN download here to between download image and now here at the top 112 00:07:23,230 --> 00:07:28,400 in our main activity class let's change this the name of the city and download to PTEN download image. 113 00:07:28,400 --> 00:07:29,070 OK. 114 00:07:29,480 --> 00:07:35,490 But as you can see here again architecture will change the speed and download to PTEN download image. 115 00:07:35,990 --> 00:07:37,420 And now the errors are gone. 116 00:07:37,430 --> 00:07:41,640 OK so now let's actually run our project and see what happens. 117 00:07:41,770 --> 00:07:45,710 So now as you can see our application is running on the simulator. 118 00:07:45,720 --> 00:07:50,710 So if we click on the spot in here it's not going to actually download the image from the Internet. 119 00:07:50,860 --> 00:07:57,340 So there is a problem here and the problem is that we didn't we didn't actually put the logic inside 120 00:07:57,430 --> 00:08:01,150 this uncle Mefford in order to download that image from the Internet. 121 00:08:01,330 --> 00:08:06,610 So first of all in order to download an image from the Internet we need to actually create an object 122 00:08:07,120 --> 00:08:09,270 of type download image task class. 123 00:08:09,280 --> 00:08:14,490 OK so this class is actually responsible for downloading the image from the Internet. 124 00:08:14,500 --> 00:08:20,140 So in order to download this image from the internet I need to create an object of type download image 125 00:08:20,140 --> 00:08:20,800 task. 126 00:08:21,010 --> 00:08:26,950 So the name of this object is download image task assignment operator new download image task and as 127 00:08:26,950 --> 00:08:32,800 you can see here for the constructor of this class I specified that this class accepts an argument of 128 00:08:32,800 --> 00:08:33,880 type context. 129 00:08:33,970 --> 00:08:41,230 So the context is going to be main activity that this semicolon and then here I can just type in download 130 00:08:41,230 --> 00:08:50,470 image task I referred to the name of this download image task object that executes at inside Apprentice's 131 00:08:50,860 --> 00:08:53,860 of this download of this execute Meffert as you can see here. 132 00:08:53,860 --> 00:08:58,030 I have this pattern is a part of type A string of a. 133 00:08:58,210 --> 00:09:00,550 So here I need to put you out of here. 134 00:09:00,700 --> 00:09:03,300 So here are inside this Apprentice's. 135 00:09:03,310 --> 00:09:09,780 I can just put into double quotes and in our Web browser as you can see I have this you are all here. 136 00:09:09,790 --> 00:09:10,300 OK. 137 00:09:10,360 --> 00:09:16,570 So I just need to copy this you are RL And inside these double codes I can put that you are all here 138 00:09:17,020 --> 00:09:21,230 and at the end of my statement I need to put up put a semicolon here. 139 00:09:21,250 --> 00:09:26,880 So this is going to be my you are l and I called this execute my foot on this download image task object. 140 00:09:26,890 --> 00:09:30,670 So let's run our project again and this time let's see what happens. 141 00:09:30,670 --> 00:09:35,450 So as you can see here our application is running on this emulator here. 142 00:09:35,800 --> 00:09:40,420 And now let's actually click on the spot in here download an image from the Internet. 143 00:09:40,690 --> 00:09:44,490 And as you can see here I cannot download this image from the Internet. 144 00:09:44,500 --> 00:09:46,480 So now what's the problem. 145 00:09:46,480 --> 00:09:52,590 The problem is inside the Android manifest as you can see here inside this manifest file. 146 00:09:52,690 --> 00:10:00,370 We need to put put actually a permission in order to actually get the permission of the user in order 147 00:10:00,370 --> 00:10:05,380 to access the Internet because they want to use the Internet in order to download an image from the 148 00:10:05,380 --> 00:10:05,970 Internet. 149 00:10:06,160 --> 00:10:10,500 So here I need to put that permission is this manifest tagging as you can see here. 150 00:10:10,600 --> 00:10:11,950 I need to put that permission. 151 00:10:11,950 --> 00:10:14,970 So here I need to open this permission here. 152 00:10:14,980 --> 00:10:22,570 This tag uses permission and inside the double quotes I can just type in Internet and select this one 153 00:10:22,990 --> 00:10:25,540 and then close this permission here. 154 00:10:25,570 --> 00:10:28,810 So now I can actually run our project again. 155 00:10:28,870 --> 00:10:33,350 So here as you can see our application is running on this emulator. 156 00:10:33,460 --> 00:10:36,330 So let's actually click on the spot in here again. 157 00:10:36,670 --> 00:10:40,470 And now as you can see we can see this progress dialog downloading image. 158 00:10:40,470 --> 00:10:41,250 Please wait. 159 00:10:41,320 --> 00:10:46,670 And here we can see this image and we successfully download this image from the Internet. 160 00:10:46,930 --> 00:10:47,890 OK. 161 00:10:48,400 --> 00:10:55,060 So I think that's enough for this tutorial and I think you can you can actually figure out how to download 162 00:10:55,060 --> 00:10:57,400 an image from the internet now. 163 00:10:57,670 --> 00:11:03,250 So if you have any questions please post the discussion in the course and then I'll do my best to answer 164 00:11:03,340 --> 00:11:04,610 all of your questions. 165 00:11:04,870 --> 00:11:08,410 Thank you very much for watching and I'll see you in the next tutorial.