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I don't know why but sometime in Android Studio Editor, it shows vertical line as shown in screenshot below.
Don't know about other editor but it happens in Android Studio.
So why it is showing and how to hide it?
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That line historically represents the margin of A4 paper, which is useful only if you need to print the code. Old school says that you should keep your code inside that margin, to guarantee much portability.
It's called a visual guide (Settings - Editor - Code Style). It helps you to see how wide is each line of code, and to keep the lines within this limit. You can configure the IDE to wrap the lines automatically when the lines are too long.
This example demonstrates how do I draw a line in android. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. Step 2 − Add the following code to res/layout/activity_main. xml.
quadTo(mX, mY, (x + mX)/2, (y + mY)/2); You will be able to draw straight lines.
That line historically represents the margin of A4 paper, which is useful only if you need to print the code. Old school says that you should keep your code inside that margin, to guarantee much portability.
But.. nowadays in the real life, it makes no sense to me! Because we always use advanced editors, bigger displays, and I never needed to print any single line of code.
So, if you want to do it:
Editor -> General -> Appearance -> Show hard wrap guide
Editor -> General -> Appearance -> Show right margin
or
Editor -> Appearance -> Show right margin
To remove line go to:- Preference-> Editor -> General -> Appearance -> Show hard wrap and visual guides. Uncheck it to remove.
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It is as follows in the newer version of Android Studio:
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