![]() Before installing Android SDK, you need to install Java Development Kit (JDK).You probably need a fairly decent PC (with 8GB RAM) and 10GB of free disk space to run the Android emulator!!! Running on "actual" Android phone/tablet requires much lesser resources. It takes times - from 30 minutes to n hours to forever - depending on your luck, your programming knowledge, and your PC. Installing Android software is probably the most challenging part of this project. Installing "Android Studio IDE" and "Android SDK" For programmers and developers, visit to download the SDK, Android Training, API Guides and API documentation. Kotlin will not be discussed in this article. As you are familiar with Java, you probably should start in Java (many of the examples out there are written in Java), and then move into Kotlin. ![]() In May 2017, Google announced support for a new Kotlin programming language. However, they run on Android's own Java Virtual Machine, called Dalvik Virtual Machine (DVM) (instead of JDK's JVM) which is optimized to operate on the small and mobile devices. Android applications are written in Java. Android PlatformĪndroid is based on Linux with a set of native core C/C++ libraries. The latest Android supports Phone/Tablet, TV, Wear (watch and glass), Automobile and Internet of things (IoT). Android competes with Apple's iOS (for iPhone/iPad), Microsoft's Windows Phone, and many other proprietary mobile OSes. Now you can select which one to uninstall.Android is an Operating System for mobile devices developed by Google in 2007, which is built upon a Linux kernel. Click on it and you will find all the different versions. For instance on Windows 10, just go to Settings and under Apps, you will find Java. If you are on a 64-bit machine, then you can install the 64-bit JDK and uninstall the 32-bit one. On a 32-bit version you'll get something like: Java HotSpot(TM) Client VM (build 20.1-b02, mixed mode, sharing) Note the 3rd line, which shows that this is a 64-bit version. Java HotSpot(TM) 64-Bit Server VM (build 20.2-b06, mixed mode) Java(TM) SE Runtime Environment (build 1.6.0_27-b07) On Windows 7 with 64-bit Java 6 I get: java version "1.6.0_27" To check your version of Java, run java -version Specifying the JVM path in eclipse.ini is strongly recommended because doing so isolates Eclipse from any potential changes to your system PATH that some program installers might make (I'm talking to you, Oracle!).Īnother option would be to download and use 32-bit Eclipse instead of 64-bit, but it's still strongly recommended to specify the path to the JVM in eclipse.ini. The instructions are detailed in the Eclipse wiki page, but basically you have to specify the -vm option in the ini file - make sure to read the wiki page carefully as the format is very specific. The best way to fix this, assuming you do in fact have 64-bit JRE or JDK on your system, is to specify in eclipse.ini exactly which JVM you want it to use. This can happen when a system has more than one JVM installed, as is often the case on Windows 64-bit (for example, the JRE download page uses the bit-ness of the browser to determine what bit-ness download to offer you, and many people use(d) 32-bit browsers even though they run 64-bit Windows). Program Files is the folder where 64-bit Windows places 64-bit programs. Program Files (x86) is the folder where 64-bit Windows places 32-bit programs. However, the version of Java that it's picking up is 32-bit, as indicated by where it is coming from, on this line: -vm C:\Program Files (x86)\Java\jre7\bin\javaw.exe ![]() Your version of Eclipse is 64-bit, based on the paths and filenames. Imm?.hideSoftInputFromWindow(view.windowToken, 0) Val imm = getSystemService(Context.INPUT_METHOD_SERVICE) as? InputMethodManager Kotlin Syntax // Only runs if there is a view that is currently focused Note: If you want to do this in Kotlin, use:Ĭontext?.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager In some cases, you will want to pass in InputMethodManager.HIDE_IMPLICIT_ONLY as the second parameter to ensure you only hide the keyboard when the user didn't explicitly force it to appear (by holding down the menu). This will force the keyboard to be hidden in all situations. Imm.hideSoftInputFromWindow(view.getWindowToken(), 0) InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE) You can force Android to hide the virtual keyboard using the InputMethodManager, calling hideSoftInputFromWindow, passing in the token of the window containing your focused view.
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