How to set max line length in Android Studio code editor?

Question

How can I set a maximum length for Android Studio's code editor, or may be set a word wrap?

In my Android Studio, no matter how long a statement I type on a single line, it never automatically goes to the next line, but rather a horizontal scroll bar appears.

When I autoformat using the Ctrl+Alt+L (reference), nothing happens.

My SO or Google search found a lot of material on this for Eclipse, but not for Android Studio.

Suntan

Answer 1

If you need not a soft wrap,
but actually, brake one long line onto several lines you need:

Go to Preferences(mac) or Settings(windows) -> Editor -> Code style -> Java/Kotlin -> Wrapping and braces (tab) -> Check "Ensure that right margin is not exceeded"

Now try to reformat your code:
press OPTION (ALT) + CMD + L on your Mac (or CTRL + ALT + L on PC)

Edit 13.02.19

As noted in comments this option seems not available in settings for Kotlin. However, there is a workaround to manually add it.
Here is what it takes to make it work:

1. Export the settings scheme.

2. Open saved xml file.

3. Find <codeStyleSettings language="kotlin"> tag (or create)

4. Add the WRAP_LONG_LINES setting manually:

   <codeStyleSettings language="kotlin">
      ...
      <option name="WRAP_LONG_LINES" value="true" />
   </codeStyleSettings>
   

5. Save edits and and import back the scheme.

6. Here you go!

Tizes

I think it is "Settings", not "Preferences". Sits in the "File" menu. – Barnette

It depends on whether you are on Mac or PC – Tizes

this option is not available for kotlin in andriod studio 3.2 – Crowther

Created an issue about this problem in Kotlin for JetBrains youtrack.jetbrains.com/issue/IDEA-229595 – Apomixis

@KonstantinZyubin is your feature request the same as supporting WRAP_LONG_LINES – Gerome

Answer 2

MacOS:

1. Click on Android Studio ( left top corner )
2. Click Preferences
3. Type Code Style in search
4. Click on Code Style

5. There is a filed right to the 'Hard wrap at' - you can enter needed about of symbols you need

Welty

for dart you have to set the dart file line-length limit, Preferences->Editor->Code Style->Dart->Line Length – Pokeberry

any reason why at Dart it's only 80? – Napalm

Answer 3

In File | Settings, select "Editor", then "Code Style". There is an option "Wrap when typing reaches right margin".

Edit: Just tried it, and it doesn't seem to work. Anyway, maybe the option "Use soft wrap" in the "General" group is more what you want.

Blasien

Answer 4

With version 4.1.2 and with Dart language you need to go to "File/Settings/Editor/Code Style/Dart" and modify the "Line length" to the preferred number.

Aubade

Answer 5

@Solace, actually @Fahim Faysal's answer is quite close to what you need, but since you want to solve the problem no matter how long a statement I type on a single line, it never automatically goes to the next line, 2 more steps you need to follow:
[Step 9] type the max length you prefer at `"Hard wrap at" ()
[Step 10] change "Wrap on typing" from Default: No or No to Yes

Walliw

Answer 6

In Android Studio: File->Setting-> Editor->code Style->java->Wrapping and braces(tab:right side)->keep when reformatting->Line break(make unchecked)

Counterirritant

Answer 7

For dart settings => code style => Dart => Line length

Orpha

Answer 8

You can change the max column width from: File > Settings > Editor > Code Style > Right Margin (columns)

Hassle

When I change the right margin, after I restart Android Studio the margin value is reseted to 100. To avoid it, I have to go to java / wrapping and braces and then change right margin to my value (for example 150) AND change Wrap on typing to NO, then APPLY... – Snow

THANK YOU. That's exactly what I was looking for. – Ambiguous

Answer 9

Android Studio 3.5:

Mac - Android Studio > Preferences > Editor > CodeStyle > HardWrap at: ____

Inhabitant

Answer 10

The existing answers already answer the question in straight forward way. As a different approach you could set the style guide to kotlin style guide code style. Then if you do alt + ctrl + l as you did, you'll see auto wrap as you expected.

1. Just open the settings, search for kotlin and look for kotlin under code style.

2. On the top right hand side of the settings window you'll see Set from..., click on it.

3. Then on predifined style > kotlin style guide

If you'd like to follow the kotlin formatting style this could reduce more effort. For more information: https://developer.android.com/kotlin/style-guide

Logistic

Answer 11

My Environment：

• Ubuntu 18.04
• AndroidStudio 3.3.2

My operate：

• File -> Settings -> Editor -> Code Style
  1. Scheme -> select Project
  2. Hard wrap at '120'
  3. Apply

Placentation

Answer 12

To move the grey vertical line, that tells Android Studio where to wrap your code, go to

Settings- Editor- Code Style- Java or Kotlin- Wrapping and Braces- Hard wrap at

and enter the number of characters, where the line should be.

Gounod

Answer 13

In settings/code style/kotlin/wrapping and braces replace the "do not wrap" values with "wrap if long"

Gratulate

Answer 14

You can change the Hard wrap at param

Andino

Answer 15

if you want to increase the font size of Ediotr go to -> settings-> scroll down and click on Editor and then select the font increase its size according to you need.

settings->Editor->font

Vashtee