El resultado final puede ser: Positivo: si los flujos de entrada de dinero son superiores a los de salida hablamos de superávit. Negativo: en caso contrario, sale más dinero del que entra, hablamos de déficit...
Once you have Java, setting up Android Studio is easy:
Download the Android Studio package from Android Studio Home page. Install Android Studio which also installs all of the Android SDK and tools you will need. Windows:
Launch the downloaded EXE file, android-studio-bundle-
A month and two weeks ago, I knew nothing about Java. I knew some C from an intro class I took Freshman year of college. Today I released my first Android app. These are the steps I took. Starting out I started because I found myself with a good amount of free time, and wanted to do something constructive (3000+ hours of League of Legends was just too much). I looked up app development as I've always been interested, and was inspired by this post. Does it really take a year? I decided to try and find out. First step was learning Java. I went through and did every exercise from this website, although I did skip the GUI/Graphics stuff because Android Studio would hopefully take care of it. This took me about 3-4 days. At the end of it, I had a pretty solid understanding of what Java is and fundamentally how to use it. Learning Android Studio So with Java under my belt (EDIT: okay not really but enough to start), I downloaded Android Studio from here and went straight to the Training course offered directly from Google ( here).
I have a long Screen, and i set ScrollView, but in Preview screen in Android Studio i do not see part of the Screen. How i can see it? asked Sep 8 '14 at 12:36
I found another & pretty cool solution. It's not about size of the layout in preview. You can simulate scrolling instead, to see the hidden content. Use with tools, as it has influence only in preview. Then increase/decrease value for "scroll".
5. Add the following to the end of the import statements if they are not already there: import; import; import; Step 7: Test the Application Click the green play symbol from the toolbar at the top of the Android Studio window. When the "Choose Device" dialog apperas (this may take a few moments), select the "Lauch emulator" option. Click OK. When the emulator opens (this too could take awhile), the app will automatically launch the app upon the virtual phone being unlocked. Make sure that all of your text displays correctly and that the button takes you to the next page. Step 8: Up, Up, and Away! Congrats! You've now completed your first Android application with some basic functionality. Your finished app should have a page greeting the user and a button that takes the user to a second page. From here you have the cursory knowledge you need to go on to learn all there is to know about Android application development. 20 People Made This Project! Recommendations
This article was originally published on: This is how you may end up if you try and take a shortcut in real life, but it's not true for the world of software!! Here you are encouraged to take shortcuts like auto complete, code generations, snippets and what not… A software engineer must know all the shortcuts of the IDE he is using and must have the environment BENT to his will. Given a keyboard he must be able to navigate through the IDE all around. This can increase his productivity manifolds and is also less distracting than shifting to a mouse/touchpad during typing. As an Android Engineer I can only speak of Android Studio and here I will mention my top 11 most useful Android Studio Shortcuts ( Windows / Mac): Search Everywhere (Press Shift Twice / Press Shift Twice): This is the holy grail of the navigational shortcuts. It's really simple. Search Android assets, navigate to the Gradle files, image resources, layouts, and much more. There is nowhere you can't go with the Double Shift shortcut.
At first, Android Studio was a nightmare. I had no idea what was going on. I spent a day trying to get the basic "Hello World" program to run, despite the code already being done (Google puts it in there at the start of a new project). Once I was able to do that, I simply tried adding things to it... a random text box, some buttons. This part was somewhat familiar, as it was similar to using the drawing tools in Microsoft Word (dragging and dropping shapes). Once I had a inkling of how the user interface builder worked, I went further into Google's training program, learning how to start a new "Activity" (a new window in your app.. sorta) by pressing a button. I found a few more similar tutorials on the web, and followed them just to learn how Android Studio works. All in all this took me about a week and a half. Starting my first app Someone once told me the golden rule to learning programming is simply to pick a random project and do it. So that's what I did. As a first project, picking a utility app (like a calculator, stopwatch, etc. )
What do you need to know to get started? You need to be able to program in a modern object-oriented language. Java would be best as it is the language used to create Android apps but C#, C++, VB or anything similar are close enough in spirit to Java for you to be able to cope. You might well need to look things up about the specifics of particular features of Java, but most of the time it should be obvious or obvious with the help of a few comments. It isn't necessary to be an expert programmer because for a lot of Android programming you are simply using the features and facilities provided. That is, a lot of Android programming is just a matter of following the rules. However, if you hope to produce something unique and useful you will at some point have to add something of your own - and here creativity and skill are required. So you might not need to be an expert programmer to get started, but you need to become one by the time you create your amazing app. Fortunately practice is a good teacher and so learning to make the most of Android Studio will actually help you learn to code.