1 00:00:00,400 --> 00:00:01,850 Hi again! In the next videos 2 00:00:01,900 --> 00:00:09,210 I'm very happy to show you how to make an AP Kay file out of the Python file that we already have. 3 00:00:09,510 --> 00:00:11,670 That we already built in the previous lectures. 4 00:00:12,160 --> 00:00:19,800 Now on APK file is a file that can be installed in Android phone so that the app is usable on mobile. 5 00:00:20,280 --> 00:00:22,500 Currently we only have a dot py file. 6 00:00:22,710 --> 00:00:23,640 So we have the dot, 7 00:00:23,760 --> 00:00:27,720 we have the main.py file and the design.kv file. 8 00:00:28,110 --> 00:00:32,460 And we also have a bunch of extra files such as this hoverable.py file. 9 00:00:33,000 --> 00:00:35,250 And this png files as well. 10 00:00:36,120 --> 00:00:39,480 And the database which is stored in the users.json file. 11 00:00:39,870 --> 00:00:46,620 So all these files will be bundled in one APK file. In order to make an APK file 12 00:00:46,890 --> 00:00:49,830 we need to use a library called Billdozer. 13 00:00:50,430 --> 00:00:54,210 It's a Python library which we can install with pip Anaconda. 14 00:00:54,840 --> 00:01:03,840 The problem is that making APK files on Windows or Mac operating systems, it's very hard not to say 15 00:01:03,840 --> 00:01:04,620 impossible. 16 00:01:04,740 --> 00:01:09,600 The best thing we can do is to use a Linux operating system such as Ubuntu. 17 00:01:11,190 --> 00:01:18,600 But I'm not going to ask you to wipe out your Windows operating system or your MAC Os and install 18 00:01:18,600 --> 00:01:19,710 Linux on your computer. 19 00:01:20,030 --> 00:01:27,030 No, we are going to use a virtual machine, which is the software that you can install on Mac OS or 20 00:01:27,030 --> 00:01:27,450 Windows. 21 00:01:27,810 --> 00:01:32,070 And inside that software, that software will behave like a computer. 22 00:01:32,370 --> 00:01:33,660 But it's a virtual computer. 23 00:01:33,660 --> 00:01:34,320 It's a software. 24 00:01:34,490 --> 00:01:39,990 So inside that software, you can install operating system such as Linux, Windows or Mac. 25 00:01:40,140 --> 00:01:44,570 So in this lecture, I'm going to show you how to install VirtualBox. 26 00:01:44,790 --> 00:01:47,950 This instalation is easy, whether you are on Windows or Mac. 27 00:01:48,540 --> 00:01:50,580 So just go to a virtualbox.org. 28 00:01:51,880 --> 00:01:56,830 And click on the download button and click in one of the links. 29 00:01:57,070 --> 00:02:02,440 So if you are on Windows, it means that the host operating system is the windows. 30 00:02:02,710 --> 00:02:04,390 So Windows will host 31 00:02:04,480 --> 00:02:07,000 the Ubuntu Linux system. 32 00:02:08,750 --> 00:02:13,870 I am currently on a Windows machine, so I'm going to click on Windows hosts, so that will give me 33 00:02:13,870 --> 00:02:18,580 the executable file or Virtual Box. Once the file downloads 34 00:02:19,750 --> 00:02:22,210 Go ahead and double click to install it. 35 00:02:27,570 --> 00:02:33,240 I don't want to shortcut on the desktop or on the quick launch bar, but feel free to leave those options 36 00:02:33,300 --> 00:02:33,960 as checked. 37 00:02:34,470 --> 00:02:35,080 Yes. 38 00:02:35,610 --> 00:02:38,010 We need internet in that virtual box. 39 00:02:38,040 --> 00:02:39,840 In that virtual machine. 40 00:02:40,090 --> 00:02:41,010 A virtual computer. 41 00:02:41,570 --> 00:02:42,300 So install. 42 00:02:49,590 --> 00:02:51,030 I'd go for install again. 43 00:02:55,670 --> 00:02:59,240 Finish and or Oracle Virtual Box will launch now. 44 00:02:59,270 --> 00:03:03,020 Expected it to take a while, and here it is. 45 00:03:03,410 --> 00:03:04,800 So the interface is quite simple. 46 00:03:04,820 --> 00:03:06,530 We have some buttons here. 47 00:03:06,770 --> 00:03:08,660 We are interested in the new button. 48 00:03:09,710 --> 00:03:14,240 But first, before I do that, you need to go to ubuntu.com. 49 00:03:16,170 --> 00:03:16,840 And download 50 00:03:17,100 --> 00:03:22,800 an Ubuntu operating system, so go to the download button, go to desktop. 51 00:03:23,190 --> 00:03:24,130 There are two versions 52 00:03:24,150 --> 00:03:24,470 now 53 00:03:24,490 --> 00:03:28,400 but this is the stable version, the one with green button. 54 00:03:28,770 --> 00:03:30,120 So I'm going to download that. 55 00:03:31,200 --> 00:03:35,280 Expect this to take a while because it's around two gigabytes. 56 00:03:35,490 --> 00:03:37,080 Yeah, that's quite a lot of data. 57 00:03:37,830 --> 00:03:45,600 Once you download that file, go again to Oracle Virtual Books and go to New, give a name. 58 00:03:46,440 --> 00:03:52,410 I'm going to call it Ubuntu, and you'll see that this dropdown lists are automatically updated. 59 00:03:52,650 --> 00:03:54,380 So you want to select a Linux here. 60 00:03:54,990 --> 00:04:00,170 We are installing a Linus operating system and Ubuntu 64 bit. 61 00:04:00,540 --> 00:04:03,630 That's at least what I downloaded from Ubuntu.com. 62 00:04:03,730 --> 00:04:04,150 That's cool. 63 00:04:04,230 --> 00:04:10,170 But your system will automatically detect the architecture of the program. 64 00:04:11,240 --> 00:04:15,390 So I'm going to click next. Now the memory size. 65 00:04:15,660 --> 00:04:23,700 This says that the recommended size is one gigabyte for 4 RAM, but I'll say you should go for higher, 66 00:04:24,630 --> 00:04:26,580 which is at least 4 gigabytes. 67 00:04:27,000 --> 00:04:32,610 If you don't have much RAM on your computer, on your physical computer, maybe you should go for 68 00:04:32,610 --> 00:04:36,570 less and see how Ubuntu will work with that much memory. 69 00:04:38,130 --> 00:04:39,270 But so this is the idea. 70 00:04:39,630 --> 00:04:46,320 3000 megabytes is the ram size on this Windows computer that I'm using and I'm giving four 71 00:04:46,320 --> 00:04:50,580 gigabytes to the virtual Linux computer. 72 00:04:51,180 --> 00:04:55,890 So that would be the maximum size four gigabytes of RAM for Linux. 73 00:04:56,340 --> 00:04:57,090 Click on next. 74 00:04:57,630 --> 00:04:58,380 Create a virtual 75 00:04:58,440 --> 00:05:01,350 hard disk now, create. 76 00:05:02,820 --> 00:05:03,970 You want a VDI. 77 00:05:03,970 --> 00:05:05,670 So click next. 78 00:05:06,330 --> 00:05:08,250 Dynamically allocated is fine. 79 00:05:09,450 --> 00:05:12,030 This again is up to you out. 80 00:05:12,080 --> 00:05:14,730 I would recommend 20 gigabytes. 81 00:05:14,760 --> 00:05:15,600 If you have them. 82 00:05:17,610 --> 00:05:21,120 So around 20 gigabytes but give it at least 10. 83 00:05:21,510 --> 00:05:26,550 Or if you don't have much space in your hard disk in your computer, then you should opt for less like 84 00:05:26,550 --> 00:05:33,180 five gigabytes and see how things work. Normally if you run out of space or out of RAM. 85 00:05:33,570 --> 00:05:40,230 You should get some Pop-Up Windows from Virtual Box telling you that the space is not enough. 86 00:05:40,440 --> 00:05:45,090 But the more space, the better. Click on create. 87 00:05:46,690 --> 00:05:50,010 And so now we have created a layer here. 88 00:05:50,340 --> 00:05:52,050 You want to go to start. 89 00:05:56,210 --> 00:05:59,360 And this will ask you to select a start up disk. 90 00:06:00,040 --> 00:06:08,450 And so you want to go to this folder here and then locate the ISO file that you downloaded from Ubuntu 91 00:06:08,450 --> 00:06:09,080 dot com. 92 00:06:11,280 --> 00:06:15,280 So that's one there. Click on start. 93 00:06:17,250 --> 00:06:19,980 Now, this window here is kind of small. 94 00:06:22,510 --> 00:06:30,710 But you can go to machine and settings, go to display and here in the scale factor 95 00:06:31,060 --> 00:06:34,090 you might want to increase this to 300 percent. 96 00:06:35,030 --> 00:06:35,780 Click on OK. 97 00:06:36,320 --> 00:06:38,590 And now you see the screen is a bit bigger. 98 00:06:39,520 --> 00:06:41,470 So this is the next screen that we got. 99 00:06:41,950 --> 00:06:44,200 You want to go to install Ubuntu. 100 00:06:47,280 --> 00:06:49,050 I'd go for English here and English 101 00:06:49,130 --> 00:06:50,760 there for the keyboard layout. 102 00:06:52,970 --> 00:06:54,500 These settings are fine. 103 00:06:57,360 --> 00:07:02,820 Then you want to select erase disk and install Ubuntu and that will simply delete all the reprograms 104 00:07:02,820 --> 00:07:05,580 your photos and your computer, everything you have you ever had. 105 00:07:06,060 --> 00:07:06,570 I'm just kidding. 106 00:07:07,740 --> 00:07:13,680 This is only about the programs you have inside of Virtual Box which we don't have any. 107 00:07:14,040 --> 00:07:19,710 So this would be the case if you were overwriting an existing operating system that you already had 108 00:07:19,740 --> 00:07:21,240 inside this virtual box. 109 00:07:21,540 --> 00:07:27,570 So it has nothing to do with your programs in your main operating system, which would be Windows or 110 00:07:28,080 --> 00:07:28,800 Mac OS. 111 00:07:29,390 --> 00:07:30,480 So just go to install now. 112 00:07:30,480 --> 00:07:35,340 Continue, select your time zone now. 113 00:07:37,820 --> 00:07:39,470 Select a name for the computer. 114 00:07:39,980 --> 00:07:44,180 I'd just go for logging automatically without providing a password. 115 00:07:44,240 --> 00:07:47,600 However, you need to choose a password. 116 00:07:51,730 --> 00:07:52,550 Click continue. 117 00:07:54,460 --> 00:07:58,640 And so that will take a while now until the files are installed. 118 00:07:58,850 --> 00:08:04,960 So onto Ubuntu is installed in this Virtual machine, in this Virtual Box. 119 00:08:10,430 --> 00:08:15,430 My installation was completed and the prompt is asking me to restart, so I'm going to click on 120 00:08:15,430 --> 00:08:22,020 Restart Now that will restart the Linux operating system, not the host operating system, which is 121 00:08:22,050 --> 00:08:23,370 Windows in my case. 122 00:08:23,860 --> 00:08:29,470 So it's just restarting Ubuntu inside Virtual Box, there seems to be an error. 123 00:08:32,840 --> 00:08:36,440 I just pressed enter and things seems to be working. 124 00:08:40,820 --> 00:08:43,970 So this is Ubutu, if you want to see the start up guide. 125 00:08:45,480 --> 00:08:46,470 Just click on next. 126 00:08:48,330 --> 00:08:55,650 And done, now you might want to go to Oracle Virtual Box, so the Visual Box interface and then 127 00:08:55,650 --> 00:09:05,940 go to machine and settings and then go to General Advanced and you may want to enable this Shared Clipboard 128 00:09:05,970 --> 00:09:08,180 and drag and drop options. 129 00:09:08,430 --> 00:09:15,270 I set them as bi-directional, which means that you can copy files from your hosts operating system. 130 00:09:15,540 --> 00:09:20,040 So from Windows or Mac to Linux to Ubuntu and vice versa. 131 00:09:20,340 --> 00:09:22,980 However, I have noticed that this doesn't work. 132 00:09:28,410 --> 00:09:32,210 If you get this prompt, it means that there are some updates for Ubuntu. 133 00:09:32,850 --> 00:09:34,950 But I'm just going to close this window. 134 00:09:35,160 --> 00:09:41,040 So I would assume that the option of copy pasting files between the systems doesn't work. 135 00:09:41,460 --> 00:09:47,370 So I'm going to show you what you can do to get files from your Windows, from your host operating system 136 00:09:47,820 --> 00:09:51,300 to your Linux, to your Ubuntu operating system. 137 00:09:52,650 --> 00:10:00,750 So this is the folder where I have all the files that I need for this APK file for the mobile 138 00:10:00,990 --> 00:10:02,400 version of the program. 139 00:10:02,820 --> 00:10:04,780 So it's everything we went through 140 00:10:04,800 --> 00:10:10,800 plus this Kivy buildozer installer sh file. 141 00:10:11,070 --> 00:10:16,950 This is a file that you can download from the resources and I'm going to show you what that file is 142 00:10:16,950 --> 00:10:17,250 for. 143 00:10:18,090 --> 00:10:20,410 For now, I'm just going to use Dropbox. 144 00:10:20,640 --> 00:10:25,350 So I have the project files already in my Dropbox on Windows. 145 00:10:26,610 --> 00:10:29,100 So the folder is this one here. 146 00:10:29,790 --> 00:10:30,300 Teaching. 147 00:10:30,570 --> 00:10:32,160 Teaching has all the files. 148 00:10:33,430 --> 00:10:33,660 All right. 149 00:10:34,320 --> 00:10:35,190 So I'm going to. 150 00:10:36,810 --> 00:10:37,110 Right 151 00:10:37,110 --> 00:10:39,600 Click and copy Dropbox Link. 152 00:10:40,080 --> 00:10:41,250 So this is on Windows. 153 00:10:41,310 --> 00:10:42,350 It's not on Linux. 154 00:10:42,570 --> 00:10:43,980 It's outside Virtual Box. 155 00:10:44,730 --> 00:10:49,800 Another way to do this would be to use this service. 156 00:10:49,830 --> 00:10:50,560 Gofile.io. 157 00:10:50,740 --> 00:10:56,640 That allows you to upload a file and that will give you a link. 158 00:10:56,970 --> 00:10:57,940 And so that the link 159 00:10:58,050 --> 00:10:58,860 you can use. 160 00:10:58,950 --> 00:11:03,290 You can put that link inside the Linux because there is a browser there. 161 00:11:03,390 --> 00:11:05,100 You have Firefox inside of Linux. 162 00:11:08,500 --> 00:11:13,900 But since we can not copy and paste, we're going to have to manually type that link. 163 00:11:14,230 --> 00:11:24,000 So in my case, I'm going to use Dropbox and I'm going to use bitly.com to shorten the URL 164 00:11:24,100 --> 00:11:25,570 that I created. 165 00:11:30,030 --> 00:11:31,530 So that's the URL there. 166 00:11:37,670 --> 00:11:41,550 And enter, that's your URL in the browser of your Linux operating system. 167 00:11:44,870 --> 00:11:50,410 If you don't want to go through this file sharing, you can just use this URL to get my files 168 00:11:50,600 --> 00:11:56,630 so you can download the files directly from your Linux system using the browser. 169 00:12:01,690 --> 00:12:04,180 Go to more direct download. 170 00:12:07,840 --> 00:12:10,600 Save file, okay. 171 00:12:11,840 --> 00:12:18,650 The files should have now been downloaded and you can find them in the Files, Downloads. 172 00:12:19,940 --> 00:12:20,190 Right 173 00:12:20,190 --> 00:12:21,780 click on the downloaded zip file. 174 00:12:22,460 --> 00:12:24,360 Go to Extract to. 175 00:12:25,290 --> 00:12:32,220 You want to select the Desktop, but click on this New Folder icon there to create a folder, let's 176 00:12:32,220 --> 00:12:37,320 say project1, create and select. 177 00:12:39,580 --> 00:12:45,970 So now we see this project, one folder here and there is the teaching folder inside. 178 00:12:46,900 --> 00:12:48,370 And these are the files. 179 00:12:49,120 --> 00:12:50,770 So let's end this video here. 180 00:12:50,860 --> 00:12:58,360 This was how to install Virtual Box and how to set up Linux inside Visual Box and how to get the files 181 00:12:58,390 --> 00:13:00,220 inside that Linux operating system. 182 00:13:00,430 --> 00:13:07,480 So now we are ready to create a mobile executable file that will run on Android. 183 00:13:08,260 --> 00:13:09,700 So let's do that in the next video.