Are you a great programming lover? If yes, then you will surely love the apps that I have shared in this article. Because they will let you do programming anywhere on your android device. These are like having mini compilers and editors in your pocket. It is a paid app and I personally used it. Some of its features are mentioned below.
Using AIDE you can create basic Android apps like interest calculator, 2D games and even advanced widgets like zooper widget. If you love C programming so much then C To Go app will let you to do C programming anywhere on your mobile. It is like having mini C compiler in your pocket.
C To Go provides various features like code completion, syntax highlighting, etc. It is also a free app which can be downloaded from google play store freely. QPython is a script engine that runs Python scripts and projects on android devices. It offers a great development kit which lets you easily develop Python projects and scripts on your phone. If you know about some other good apps that allows to do programming on android platform then please mention it by commenting below.
online compiler and debugger for c/c++
So let me know if on the right track. Thanks, Keith. Nothing called too old. You can learn either C or Python both are so beginner friendly.
But C if you want to do deeper programming. Sine Python considers a scripting language. Link for qpython is broken. I tried cppdroid and it is magnificent offline coding app with good debugging tool i recommend it. It also permits to create apks corresponding to the user programs, so that it can be installed on android platforms. You may feel you will get back to your lecture note or your tutorial video if you forget.
But what if you are in a situation were by you have no access to them. Tapping the screen twice opens the index which contains many functions with explanation and example.GroupLayout is a LayoutManager that hierarchically group the components and arranges them in a Container. Grouping is done by using the instances of the Group class.
GroupLayout Class supports two types of groups:. Please use an offline compiler. Become industry ready at a student-friendly price. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute. See your article appearing on the GeeksforGeeks main page and help other Geeks. Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below. Writing code in comment? Please use ide.
How to validate identifier using Regular Expression in Java. GroupLayout Class supports two types of groups: A sequential group positions its child elements sequentially, one after another. A parallel group aligns its child elements in different ways. Below programs illustrate the use of GroupLayout class:. Check out this Author's contributed articles. Load Comments.
Component; import javax.Extra Compiler Flags Done Main. Code, Compile, Run and Debug java program online. Write your code in this editor and press "Run" button to execute it.
Click "Debug" button to start program in debug mode. If your program is reading input from standard input and you forgot to provide input via stdin. Your program contains infinite loop, which may never break. Your program contains infinite recursive function calls.
Please save your data and refresh page to update. Source Code. Editor Theme: Dark Light. Editor Mode: Normal Emacs vim. Font size: Small Medium Large. Autocomplete: on off. Extra Compiler Flags. Compiling Program Command line arguments:. Standard Input: Interactive Console Text. Program is not being debugged. Call Stack. Function File:Line. Local Variables. Variable Value. Register Value. Display Expressions. Expression Value. Breakpoints and Watchpoints.
Add Comment. May be your program is trying to process large data and it takes much time to process. Name of Project:. Yes No. Name of new file:. Connection to server is lost.
Please refresh the page to reconnect.A layout defines the structure for a user interface in your app, such as in an activity. All elements in the layout are built using a hierarchy of View and ViewGroup objects. A View usually draws something the user can see and interact with. Whereas a ViewGroup is an invisible container that defines the layout structure for View and other ViewGroup objects, as shown in figure 1.
Figure 1. Illustration of a view hierarchy, which defines a UI layout. The View objects are usually called "widgets" and can be one of many subclasses, such as Button or TextView.
The ViewGroup objects are usually called "layouts" can be one of many types that provide a different layout structure, such as LinearLayout or ConstraintLayout. Declaring your UI in XML allows you to separate the presentation of your app from the code that controls its behavior. Using XML files also makes it easy to provide different layouts for different screen sizes and orientations discussed further in Supporting Different Screen Sizes.
The Android framework gives you the flexibility to use either or both of these methods to build your app's UI. For example, you can declare your app's default layouts in XML, and then modify the layout at runtime. Tip: To debug your layout at runtime, use the Layout Inspector tool. Each layout file must contain exactly one root element, which must be a View or ViewGroup object.
Once you've defined the root element, you can add additional layout objects or widgets as child elements to gradually build a View hierarchy that defines your layout. After you've declared your layout in XML, save the file with the.
More information about the syntax for a layout XML file is available in the Layout Resources document. When you compile your app, each XML layout file is compiled into a View resource.
You should load the layout resource from your app code, in your Activity. Do so by calling setContentViewpassing it the reference to your layout resource in the form of: R. The onCreate callback method in your Activity is called by the Android framework when your Activity is launched see the discussion about lifecycles, in the Activities document. Some attributes are specific to a View object for example, TextView supports the textSize attributebut these attributes are also inherited by any View objects that may extend this class.
Some are common to all View objects, because they are inherited from the root View class like the id attribute. And, other attributes are considered "layout parameters," which are attributes that describe certain layout orientations of the View object, as defined by that object's parent ViewGroup object.
Any View object may have an integer ID associated with it, to uniquely identify the View within the tree. When the app is compiled, this ID is referenced as an integer, but the ID is typically assigned in the layout XML file as a string, in the id attribute. This is an XML attribute common to all View objects defined by the View class and you will use it very often.
The at-symbol at the beginning of the string indicates that the XML parser should parse and expand the rest of the ID string and identify it as an ID resource.
There are a number of other ID resources that are offered by the Android framework. When referencing an Android resource ID, you do not need the plus-symbol, but must add the android package namespace, like so:. With the android package namespace in place, we're now referencing an ID from the android. R resources class, rather than the local resources class.
Defining IDs for view objects is important when creating a RelativeLayout. In a relative layout, sibling views can define their layout relative to another sibling view, which is referenced by the unique ID.
An ID need not be unique throughout the entire tree, but it should be unique within the part of the tree you are searching which may often be the entire tree, so it's best to be completely unique when possible.View solution.
View Solution. Why EE? Courses Ask. Get Access. Log In. Web Dev. We help IT Professionals succeed at work. Java compiler error: setLayout java.
LayoutM anager in java. Container cannot be applied to FlowLayout. Medium Priority. Last Modified: I'm new to Java, but have some programming experience. Below is some code from a book I have about Java, but when I try to compile the code below running "javac TryFlowLayout. When I un-comment the "grid" lines and comment out the "flow" lines, the program compiles and I can run it, but it does not look very nice.
So, can anyone tell me why I am getting the compiler error for the "flow" layout manager and how to get it to work properly? Start Free Trial. View Solution Only. Commented: I don't see any problems, it works fine for me. What is Your java version?
It ran all right Check your java version As already told. But it seems really queer that GridLayout is working and FlowLayout is not as both are a part of the same java version As it can be summed up finnally there's nothing wrong with the code Only problem with the environment Hi, Make sure you have the tools.
I think that it should be tools.
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Well, Suppose there is an Activity called MainActivity and there are two layouts called layout1 and layout2 both have few buttons. By default MainActivity layout is layout1 like following:. Now what I did actually is by clicking a button in layout1 the second layout is set like following:. There are another button in layout2 to return back to layout1 like following:. How I can write code to make them work perfectly with best practices?
5 Best Apps to do Programming on Android Platform
In your code, setContentView with layouts recreate inflate all your views every time, so the call setContentView R. If you just want to play around with your current code, a solution for your problem is that the listeners must be redeclared when the layout changes, as follows:.
An alternative to avoid declaring the listeners twice is to declare two methods to handle the layout changes and use the onClick property of the button in each of the layouts, for example:.
However, if you want to follow best practices, the best practice is not to mix layouts in the same activity, but instead declare two different activities each one with its own layout and call one activity or the other depending on the button that was clicked. Suppose that you are in Activity1 and want to call Activity2, then go back to Activity One way of doing this is loading both views in onCreate Something like the following:.
When you are seting layout2, you should also set up OnClickListener to someBtn1 and vice versa, I'd suggest something like this. But as in prevoius answer, in general you should avoid mixing layouts in such manner. Learn more. How to set layout dynamically in android Ask Question. Asked 7 years ago.
Active 3 years, 9 months ago. Viewed 50k times. Active Oldest Votes. The best practice is to use fragments instead of change the content view. I'd like to learn the fragment way, do you have any quick examples? Please, read this developer. How can I make bottom back button to get back to previous layout but not to a previous activity? I am actually struggling with that condition. I actually have multiple buttons on my both views and dont wanna write different listener for each if they are doing the same work.
Is there any solution for it? You can get the button from the inflated view view1. If you just want to play around with your current code, a solution for your problem is that the listeners must be redeclared when the layout changes, as follows: someBtn1. Suppose that you are in Activity1 and want to call Activity2, then go back to Activity1: In Activity1.
Piovezan Piovezan 2, 1 1 gold badge 21 21 silver badges 32 32 bronze badges. Yes, I know that. But for some reason i want to use different layouts in same activity dynamically. Thanks for your suggestion.Now consider what we must believe in order to conclude that Tim Donaghy did not fix games: first, that a person troubled enough to provide inside information to criminals was able to referee games in which he had a financial interest in the outcome without any bias.
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