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In Flash Professional CS5: Creating a Simple Game for Android Devices, author Paul Trani shows how to translate existing Flash skills from the web to mobile devices while designing a game in Flash and publishing it as an AIR for Android app. The finished application includes collision detection, random enemy creation and movement, shooting capabilities, multiple levels, and even a high score screen. This course also goes beyond game functionality and shows how to use mobile capabilities such as the accelerometer and gestures to control graphics, use the hardware keys to activate menus, and also how to optimize content so it plays well on mobile devices. Also included are instructions for distributing an app through the Android Market. Exercise files are included with the course.
So, I am going to show you how you can go ahead and package up all of these files into an actual app file that can be distributed. So, I want to make an APK file. I'm going to use a couple of different things. I am going to use JAVA, I am going to use the Adobe AIR SDK, and I'm going to package everything up using the command line. Now, it sounds pretty complex, but it is fairly straightforward. But the first thing we need is we need to go ahead and get the Adobe AIR SDK. So go to Adobe.com, and you can just do a search for Adobe AIR SDK if you want, or the actual URL is adobe.com/products/air/sdk.
And notice it does list out what it contains, and really what I want to use is I want to use the command line, this ADT tool, the Adobe AIR Developer tool. So, I am going to use ADT to package up those elements, all of those files. Okay, so, of course, I'm on a Windows machine, so just go ahead and click Download now for Windows. I've actually already done that. So, again, right here, this is what I have downloaded is this folder. Again, you will download a zip file and just unzip it, and this is what you get.
Luckily, you only need to be concerned about one file in here, and it happens to be in this bin folder. I will double-click on that, and that adt is what I need. In fact, what I am going to do is I am just going to go ahead and drag all of these files into this folder, because again, I am going to use this batch file to package up all of these files into one APK file. Now, I am going to do this using the command line as well as Java.
So, I first need to make sure Java is installed. So, I am just going to go to Computer, and I'll go into Local Disk, into your Program Files, and you should see Java in there. In fact, if I open that up, here is my jre6. And again, in this bin folder, you can see it's java right here. Or what you could do is you could just go ahead and search for java.exe. But again, I just want to be aware that it is there, and I want to be aware of the path to it exactly as well.
If you don't have Java installed for some reason, you can actually download the latest version from the Internet. But again, I can see that it's installed. I just want to be aware of where it is, because I need to do something with this path. I need to add it to my system file, so I am going to go ahead and just copy this path right here. And what I need to do is I need to go ahead and do a search for Advanced System Setting.
All right, so just do a search just by clicking the Windows icon, Advanced System Settings. So, that's what I need. It is in the Control panel. But this is just a quick way to get to it. You want to open up your Advanced System Settings. And I need to add that path to my Environment Variables. So, when I use the command line, my command line needs to know where that java.exe is. So I am going to select Environment Variables, and again, I want to be aware of that path and I quite frankly need to add it to the path, not PATHEXT, the path right here.
So, just select Path, double-click, and I need to add it, so I don't want to remove anything, please don't, but right down here at the end, just do a semicolon and then paste in that line. Again, it's pointing to that java.exe. Just paste in that line. You can see it right here, ;c clear down to that file. Once that's done, I will click OK. Click OK again. And again, there might be a chance that you already have that path added, so please review those various paths in there, just to make sure you don't.
But nonetheless, it is added now. I will go ahead and click OK, and now that's set up. So I can go ahead and close that window. And let's just move this off to the side, because what I want to do now is I am going to go ahead use the command line to package up everything. So again, click on the Start menu, and just do a search for 'cmd' for commandline. There is my executable. I'll go ahead and select it, and that will open up this command line window. So this is where we are going to get all of our work done. So, I what I want to do is I first need to target this folder.
So, I am going to change the current directory, so I am going to cd for current directory, desktop. What is on the desktop? Well, this folder is. I need to type in AdobeAIRSDK. I'm typing it exactly as it's listed here, caps and all, and then the bin folder, forward slash, just like that. Hit Enter and now I'm targeting this folder. Now, with all of those various files, especially the ADT batch file, I want to say adt, with that batch file, I need to package up and target an APK file.
So that's what I am going to make. The storetype, again, I am going to add the storetype because it is going to be a secure APK file I am going to make. Storetype is going to be pkcs12. That's the security for mycert.p12. Storetype is pkcs12 keystore mycerts.p12, again, that's the certification file. Everything is typed correctly, space, Invaders.apk is what I am going to make.
And now I can start listing out all of these files right in here that I want to package up with it. All right, so Invaders.app.xml Invaders. Again, I've got to be aware of my capitalizations in here. swf icon36.png icon48.png, and then there is icon72.png. All right, so keep in mind there is no spaces before these dashes and the word, and I'm just reviewing everything.
Everything looks pretty good. There is just a single space in between all of these file names. Everything looks good. So all I need to do is hit Return, and what it asks me for is the password. And again, that's a password that I used when I created this mycert file, so in this case it's Johnson. I've typed it in. Even though it doesn't show it in there, know that I did type it in. I will hit Enter. And then sure enough, what does it do? It creates that APK file, almost like magic. But this is great! So this is actually my packaged-up application, my app file for Android devices.
So I can go ahead and take this. I could quite frankly upload it to the Android market if I want to, but what I want to do with this now is go ahead and test it out on an actual Droid device.
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