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In android studio Tools-&gt;Android-&gt;SDK Manager.<br />
In the bottom right check the box &quot;Show Package Details&quot;. This will show every api and toolkit that is available and the ones you have on your system. The ones used in your project are specified by the gradle file. <br />
These are the update urls that I use.<a href="https://filedb.experts-exchange.com/incoming/2017/07_w27/1180157/urls.png" target="_blank" title="repo sites (128 KB)"><img alt="repo sites" class="file-block lazyload" style="max-width: 800px;" data-src="https://filedb.experts-exchange.com/incoming/2017/07_w27/800_1180157/urls.png" /></a>
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In android studio Tools->Android->SDK Manager.
In the bottom right check the box "Show Package Details". This will show every api and toolkit that is available and the ones you have on your system. The ones used in your project are specified by the gradle file.
These are the update urls that I use.repo siteshttps://filedb.experts-exchange.com/incoming/2017/07_w27/1180157/urls.png

urls.png

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Thx, where can I find the information like &nbsp;com.android.support:appcom<wbr />pat-v7:25.<wbr />3.1or com.android.support:cardvi<wbr />ew-v:22.0.<wbr />+&quot;
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Thx, where can I find the information like  com.android.support:appcompat-v7:25.3.1or com.android.support:cardview-v:22.0.+"

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What is depdencies and how do I know which version is avaible for selection in my current project ?<br />
<br />
Pic2 : There is no library for com.android.support:appcom<wbr />pat-v7:25.<wbr />3.1 but I can use it in my code<br />
Pic1: Try to use cardview but it tells me that the version is not correct. Where can I check which version is currently avaialble ?<br />
<br />
Thx
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What is depdencies and how do I know which version is avaible for selection in my current project ?

Pic2 : There is no library for com.android.support:appcompat-v7:25.3.1 but I can use it in my code
Pic1: Try to use cardview but it tells me that the version is not correct. Where can I check which version is currently avaialble ?

Thx

Dependenices libary in Android

Android is a mobile operating system developed by Google, based on the Linux kernel and designed primarily for touchscreen mobile devices such as smartphones and tablets. Android's user interface is based on direct manipulation, using touch gestures that loosely correspond to real-world actions, such as swiping, tapping and pinching, to manipulate on-screen objects, along with a virtual keyboard for text input. In addition to touchscreen devices, variants of Android are also used on notebooks, game consoles, digital cameras, televisions, automobiles and other electronics. Applications are usually developed in Java programming language using the Android software development kit (SDK), but other development environments are also available, including Delphi, Ruby and Visual Studio (using C++).

Android

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.