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Questions tagged [android]

Android is Google's mobile operating system, used for programming or developing digital devices (Smartphones, Tablets, Automobiles, TVs, Wear, Glass, IoT). For topics related to Android, use Android-specific tags such as android-intent, android-activity, android-adapter, etc. For questions other than development or programming but related to the Android framework, use this link: https://android.stackexchange.com.

Android is a mobile operating system developed by a consortium of developers known as the Open Handset Alliance, with the main contributor and commercial marketer being Google. It is based on a modified version of the Linux kernel and other open source software and is designed primarily for touchscreen mobile devices such as smartphones and tablets. In addition, Google has further developed Android TV for televisions, Android Auto for cars, and Wear OS for wrist watches, each with a specialized user interface. Variants of Android are also used on game consoles, digital cameras, PCs, and other electronics.

Tag Usage

When asking about your app force closing or crashing, you have to include an MCVE, which has to include a stacktrace. See also: How to Ask

When adding additional tags to questions, please use the Android-specific tags such as , , , and not individual tags like , or .

For non-developer Android questions, see Android Enthusiasts Stack Exchange.

Manufacturer-Monitored Tags

These tags are used for developer assistance by Android device manufacturers for their specific devices:

ISV-Monitored Tags

These tags are meant for libraries, services, etc. for Android that are monitored by their respective developers:

( (now deprecated))

Resources

Android Versions

Official API Documentation

Applications

Source Code and Building

Developers

Playlist of videos for Google I/O.

  • Android Tools Project Site
    On this site, you will find information about the Developer Tools for Android (Dalvik Debug Monitor Server (DDMS), hierarchy viewer, lint) and various tips & how-to documents.

In addition, there are other Android developer support sites, operating in other languages.

For non-developer questions, see the Android Enthusiasts Stack Exchange site.

Android Programming Books

Android Loggers

  • logger - Simple, pretty and powerful logger for android
  • timber - A logger with a small, extensible API that provides utility on top of Android's normal Log class.
  • LoggingInterceptor - An OkHttp interceptor which pretty logs request and response data.
  • Bugfender - Upload your logs and check them online, specially made for mobile
  • EzyLogger - Simple Lightweight logger
  • Logback Android - Logback port to Android which provides a highly configurable logging framework for Android apps.

Chat Rooms

Chat about Android with other Stack Overflow users:

Stack Exchange

IRC:

Development IDEs

Tutorials & Examples

Online Courses

Online Specialization Verified Courses

Sites that list Android libraries

Open-sourced Android apps

Samples

Podcasts for Android

Weekly

Frequently Asked Questions

1409497 questions
172
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14 answers

Android ACTION_IMAGE_CAPTURE Intent

We are trying to use the native camera app to let the user take a new picture. It works just fine if we leave out the EXTRA_OUTPUT extra and returns the small Bitmap image. However, if we putExtra(EXTRA_OUTPUT,...) on the intent before starting it,…
Drew
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9 answers

How to clean project cache in IntelliJ IDEA like Eclipse's clean?

Sometimes the IDE makes some error because of the cache. In Eclipse, we can use clean to solve the problem. How can I do this in IntelliJ?
Marshall
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20 answers

Android Studio/Emulator on macOS with ARM CPU M1

I started Android Studio 4.1 in macOS Big Sure 11.0.1 with new ARM cpu M1 After installing Rosetta: Yes, it builds ! But the Emulator has problems, it shows me CPU does not support VT-x Even ARM images have this issue I used the most recent, a very…
hannes ach
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171
votes
15 answers

Outdated Kotlin Runtime warning in Android Studio

After downloaded and installed latest Kotlin plugin I have Outdated Kotlin Runtime warning from Android Studio that telling me: Your version of Kotlin runtime in 'kotlin-stdlib-1.1.2' library is 1.1.2, while plugin version is…
Arsenius
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171
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9 answers

How do I make a LinearLayout scrollable?

After I start the activity I am unable to scroll down to see other buttons and options in the xml defined below. Does anyone know how to make this scrollable?
Sana
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171
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16 answers

Is there a convenient way to create Parcelable data classes in Android with Kotlin?

I'm currently using the excellent AutoParcel in my Java project, which facilitates the creation of Parcelable classes. Now, Kotlin, which I consider for my next project, has this concept of data classes, that automatically generate the equals,…
thalesmello
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10 answers

Adding header to all request with Retrofit 2

Retrofit 2's documentation says: Headers that need to be added to every request can be specified using an OkHttp interceptor. It can be done easily using the previous version, here's the related QA. But using retrofit 2, I couldn't find something…
Ashkan Sarlak
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171
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31 answers

Soft keyboard open and close listener in an activity in Android

I have an Activity where there are 5 EditTexts. When the user clicks on the first EditText, the soft keyboard opens to enter some value in it. I want to set some other View's visibility to Gone when the soft keyboard opens and also when the user…
N Sharma
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171
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6 answers

What Product Flavor does Android Studio build by default in build.gradle?

We have an Android project that uses the new Gradle build system, and we use Android Studio as a development tool. When there are several product flavors specified in build.gradle, we notice that Android Studio builds the first one specified…
Joe
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171
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6 answers

How to customize a Spinner in Android

I want to add a custom height to the dropdown of a Spinner, say 30dp, and I want to hide the dividers of the dropdown list of Spinner. So far I tried to implement following style to the Spinner: