Set android sdk path in windows

We then set the content-view of the MainActivity screen to this TextView. Each Android application has a manifest file named AndroidManifest. It describes the Android app. For example, our " Hello Android " application, with an activity called MainActivity , has the following manifest generated automatically by the Android Studio when the project was built :.

Instead of writing Java codes to create the user interface UI as in the above example using a TextView component.

Variables reference

It is more flexible and therefore recommended to layout your UI components via a descriptive XML layout file. In this way, you don't need to hardcode the views, and you can easily modify the look and feel of the application by editing the XML markups.

The Java codes can therefore focus on the business logic. Expand the "app", "res resource ", "layout" node. It declares a TextView text field that holds a text string " Hello World! Instead of hardcoding the Hello-World string directly inside the TextView as in the above XML file , we shall use a string reference similar to a variable for better flexibility.

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Next, check the " MainActitivy. The " MainActivity " sets its content-view to " R. Run the application. You shall see the new string " Hello, from XML! Introduction Android is an Operating System for mobile devices developed by Google, which is built upon Linux kernel. Read " How to install JDK ". Ensure that your JDK is at or above 1.

You can check your JDK version with command " javac -version ".

How to Install Android SDK and Get Started

The installation and many operations take a LONG time to complete. Do NOT stare at your screen or at the ceiling. For developers, check out the "Developer Guides". You need about GB of free disk space! Launch the downloaded ". Drag and drop Android Studio into the "Applications" folder. The installation will continue to Step 2 below. Then run again.

Note: In Windows, "AppData" is a hidden directory. Be Patient!!! Choose "Start a new Android Studio Project". Be patient! It could take a few minutes to set up your first app. Watch the "progress bar" at the bottom status bar and Zzzzzzzzz The Platforms tab displays a list of platform SDK versions along with other resources like system images for each platform:. This screen lists the Android version such as Android 8. When all components of a platform are installed, a checkmark appears next to the platform name. If not all components of a platform are installed, the box for that platform is filled.

Click - to unexpand the component listing for a platform. To add another platform to the SDK, click the box next to the platform until the checkmark appears to install all of its components, then click Apply Changes :.

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  • How to set environment variables?
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To install only specfic components, click the box next to the platform once. You can then select any individual components that you need:. Notice that the number of components to install appears next to the Apply Changes button. After you click the Apply Changes button, you will see the License Acceptance screen as shown earlier.

How to Install and Get Started

You may see this dialog more than one time when there are multiple components to install. At the bottom of the window, a progress bar will indicate download and installation progress. When the download and installation process completes this can take many minutes, depending on how many components need to be downloaded , the added components are marked with a checkmark and listed as Installed.

When the Google repository is selected, additional packages may appear in the Platforms tab that were not available previously. Keep in mind that use of the Google repository is unsupported and is therefore not recommended for everyday development. To switch back to the supported repository of platforms and tools, click Microsoft Recommended. This restores the list of packages and tools to the default selection. If you are using Visual Studio for Mac 7. These locations must be configured correctly before the Platforms and Tools tabs will function properly.

When the SDK Manager starts, it automatically determines the path for each installed package and indicates that it was Found by placing a green checkmark icon next to the path:. You might want to specify a new location if the default location is low on disk space.

The Android emulator queries the following environment variables when it starts. Uses a colon : separator between the host and the port. Set this enivronment variable only when the emulator does not start on your linux system because of a system library problem. You might need to disable the audio in the following situations: In rare cases, audio drivers can cause Windows to reboot while the emulator is running. On some Linux machines, the emulator might get stuck at startup with audio support enabled. Values can be the following: all , adb , sockets , packets , rwx , usb , sync , sysdeps , transport , and jdwp.

How to set environment variables The following examples show how to set environment variables in a terminal window and in a shell script for different operating systems. Sets the path to the SDK installation directory. Set this variable to windows , macosx , or linux when you use sdkmanager to download packages for an operating system different from the current machine.

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The Android Studio configuration variables contain settings that customize the location of configuration files and the JDK. Sets the location of the studio. Sets the location of the idea. Sets the location of the JDK with which to run Studio. Sets the path to the user-specific emulator configuration directory. Sets the path to the directory that contains all AVD-specific files, which mostly consist of very large disk images. Contains a value of 0 default or 1. Use this variable to provide an emulator serial number, such as emulator, to an adb command. Use this environment variable to set a default filter expression when you are running logcat from your development computer.

Contains a comma-separated list of the debug information to log. Contains a comma-separated list of verbose output options debug tags used by the emulator.