File-&gt;Settings-&gt;Appearance &amp; Behavior-&gt;Keymap
Search for Split 
Then you may define your own keyboard shortcut.

![enter image description here][1]


  [1]: http://i.stack.imgur.com/RJJuj.png

For *IntelliJ 2020.3 (Mac)* the command is now called Split-Right.
Context-Click on a tab and Split-right will create a new window to the right.

For example, I have a `100*100` size imageview or button, and I want to set its image or `backgroundImage` with a local `.png` file. Based on my understanding, I need to create 3 sets of images, i.e. `100*100` for `@1x`, `200*200` for `@2x`, `300*300` for `@3x`. I am not sure if my understanding is correct or not, can anyone help? 

What should image sizes be at @1x, @2x and @3x in Xcode?

I just finished adjusting one of my apps to the new v22.1.1 support &amp; appcompat libraries, see [here][1] and [here][2] for more details. When I did some testing, something was off with the [ActionModes][3] I&#39;m using.

When you start a [ActionMode][4] using a `startSupportActionMode()` call - it does not matter if you use the now deprecated [ActionBarActivity][5] base class or the new [AppCompatActivity][6] base class - `onPrepareActionMode()` is not being called. 

In previous versions, including v21.0.3 &amp; v22.0.0, `onPrepareActionMode()` was called automatically, when the ActionMode was initially created using `startSupportActionMode()`. 

I tested it on a 2.2, 4.4.2 and 5.0 device, so it seems not to be version dependent.

Does anyone know, if this is intended behavior, that&#39;s been introduced in v22.1.1, or a bug?

I found this [issue][7], but there&#39;s not a lot of feedback here...

**Edit May 11 2015:**

As mentioned in the [Android issue tracker 159527][8], this issue not only affects the v22.1.x of appcompat and the support library, but also the 5.1 Android implementation.

Two possible temporary solutions at the moment, a general one:

    @Override
    public ActionMode startSupportActionMode(final ActionMode.Callback callback) {
      // Fix for bug https://code.google.com/p/android/issues/detail?id=159527
      final ActionMode mode = super.startSupportActionMode(callback);
      if (mode != null) {
        mode.invalidate();
      }
      return mode;
    }

and a &#39;quick and dirty&#39; one (when you instantiate your ActionMode):

    final ActionMode actionMode = startSupportActionMode(new MyActionMode());
    if(actionMode != null) {
    	actionMode.invalidate();
    }

If you don&#39;t use appcompat (`ActionBarActivity`/`AppCompatActivity`) you need to replace `startSupportActionMode()` with `startActionMode()`.

Unfortunately it&#39;s still not clear if this is intended new behavior or a bug. According to the [API doc][9] it&#39;s a bug/regression, but who knows...


  [1]: https://chris.banes.me/2015/04/22/support-libraries-v22-1-0/
  [2]: http://android-developers.blogspot.co.uk/2015/04/android-support-library-221.html
  [3]: https://developer.android.com/reference/android/support/v7/view/ActionMode.html
  [4]: https://developer.android.com/reference/android/support/v7/view/ActionMode.html
  [5]: https://developer.android.com/reference/android/support/v7/app/ActionBarActivity.html
  [6]: https://developer.android.com/reference/android/support/v7/app/AppCompatActivity.html
  [7]: https://code.google.com/p/android/issues/detail?id=159527
  [8]: https://code.google.com/p/android/issues/detail?id=159527
  [9]: http://developer.android.com/reference/android/view/ActionMode.Callback.html#onPrepareActionMode%28android.view.ActionMode,%20android.view.Menu%29

onPrepareActionMode not called when creating ActionMode

Is there a way to split your window vertically with a keyboard shortcut?

Right now I have to &lt;kbd&gt;Ctrl&lt;/kbd&gt;+&lt;kbd&gt;Shift&lt;/kbd&gt;+&lt;kbd&gt;A&lt;/kbd&gt; and choose `split vertically`.

There is no mention of a shortcut here: [Splitting and Unsplitting Editor Window][1]


  [1]: https://www.jetbrains.com/idea/help/splitting-and-unsplitting-editor-window.html

What is the shortcut to split editor window?

Is there a way to split your window vertically with a keyboard shortcut?
Right now I have to <kbd>Ctrl</kbd>+<kbd>Shift</kbd>+<kbd>A</kbd> and choose <code>split vertically</code>.
There is no mention of a shortcut here: <a href="https://www.jetbrains.com/idea/help/splitting-and-unsplitting-editor-window.html" target="_blank" rel="noopener noreferrer">Splitting and Unsplitting Editor Window</a>

I want to have the &#39;Ctrl&#39;+&#39;K&#39;,&#39;Ctrl&#39;+&#39;D&#39; functionality of Sublime in Android Studio, how do I do it?

&gt; Perfectly similar to this question, but with respect to Android Studio.
https://stackoverflow.com/questions/11548308/how-do-i-skip-a-match-when-using-ctrld-for-multiple-selections-in-sublime-text

I use **Ctrl+D** to add to selection (discrete multiple select) the next occurrence of the string (or substring) highlighted. And to skip adding next immediate selection to selection but the one after it, I use **Ctrl+K, Ctrl+D**. How do I do the same in Android Studio.

I just know Alt+J is similar to Ctrl+D (found from Keymappings in Android Studio). 

&gt; And to deselect the last selected it&#39;s Alt+Shift+D. 

But how do I skip next occurrence?

&gt;My question is in no way related to: 
https://stackoverflow.com/questions/12500502/does-intellij-idea-have-a-ctrl-k-ctrl-d-equivalent. That&#39;s Visual Studio equivalent. I want the SublimeText equivalent.


Does IntelliJ have a `Ctrl` + `K`,`Ctrl` + `D` Sublime equivalent? How do I skip a match when using Alt+J for multiple selections in Android Studio?

I&#39;ve cloned my repo from bitbucket and I am trying to open it in IntelliJ IDE, but i can&#39;t set Debug Configuration, can&#39;t set Main class in Application menu. I can&#39;t also add new Java class into project. I think that Intellij can&#39;t recognize this project is Java.

Is it possible to make it right?



IntelliJ doesn&#39;t recognize java project after cloning

I&#39;m new to Ubuntu and Linux in general. I want to code in Java on my computer, but I&#39;m having problems installing [IntelliJ IDEA][1] on Ubuntu. I have downloaded and extracted the file and for some reason renamed the folder to idea. I tried moving the folder to `/usr/share/applications` or something but I didn&#39;t have permission. I used `sudo -i` in terminal to gain permission but didn&#39;t manage to get out of root folder. Can anyone help me with a step by step way to move the folder, create a shortcut in the search bar or whatever it&#39;s called and install it properly?

  [1]: https://www.jetbrains.com/idea/download/#section=windows

How to install Intellij IDEA on Ubuntu?

I have an IntelliJ 14.1.2 Project consisting of two modules - one is an Android Gradle based module and the other is a Spring Java-based module with Maven.

gps-trackman.v1 is my root project and I&#39;ve not configured any outputs or facets for this project. The app is my android gradle module and I&#39;ve configured Android and Android-Gradle Facet for this project and gps-trackman isn&#39;t my Spring Maven Project. I want to be able to build everything all together. Is it possible?


I now get this error message in my IntelliJ Eventlog 

&gt; Unsupported Modules Detected: Compilation is not supported
&gt; for following modules: gps-trackman, gps-trackman.v1, app.
&gt; Unfortunately you can&#39;t have non-Gradle Java modules and
&gt; Android-Gradle modules in one project.
&gt; 
&gt; The project &#39;gps-trackman.v1&#39; is not a Gradle-based


Is this error just due to a misconfiguration of my project or is it really not possible to have a maven module and a Gradle module in one project?

Do I have to configure any Facets for the root project? Alternatively, do I have to convert my maven to gradle? 

Error: Unfortunately you can&#39;t have non-Gradle Java modules and &gt; Android-Gradle modules in one project

When working in maven module, what&#39;s the difference between doing in intellij build -&gt; Make Project and Maven Projects -&gt; Root pom -&gt; Compile phase.

Does intellij calls maven? 
Does both of them compile the sources to the same place?
Do they both copy resources files?
Why do we need both options?
Does intellij download the dependencies automatically and we can just call project make, without using maven compile?

![intellij project: two ways of compiling][1]

  [1]: http://i.stack.imgur.com/3Ff5l.png

Content Type	Original Author	Original Content on Stackoverflow
Question	Eric Francis	View Question on Stackoverflow
Solution 1 - Intellij Idea	Travis	View Answer on Stackoverflow
Solution 2 - Intellij Idea	paiego	View Answer on Stackoverflow

What is the shortcut to split editor window?

Intellij Idea Problem Overview

Intellij Idea Solutions

Solution 1 - Intellij Idea

Solution 2 - Intellij Idea

onPrepareActionMode not called when creating ActionMode

What should image sizes be at @1x, @2x and @3x in Xcode?

Attributions