Develop Reference

How to find where is typo in Android Studio [duplicate]

IntelliJ IDEA has an inspection that checks for spelling. In the analysis overview, I can see how many spelling mistakes were found, e.g. 12 typos found. In the code they are highlighted using a wavy green line.
However, I find it very hard to look manually for those wavy lines. Is there a keyboard shortcut or a search function which will automatically skip to the next highlighted typo?

F2 and Shift + F2 shortcuts will navigate you to the Next / Previous highlighted error. You need to configure the error navigation first to Go to next problem instead of default Go to high priority problems option(from the context menu of editor right side bar):
See help for details. Another option is to use double click (F4 shortcut) from the Inspection Results window to go to the source.

IntelliJ IDEA 2016.3
If you want to fix all typos from the project, you can list all of them and iterate through them using double click (or F4 to open the source):
Analyze > Run Inspection by Name...
Type "Typo"
You will be able to see a list containing all typos grouped by file:

In Settings -> Editor -> Colors & Fonts -> General, you can add an 'Error stripe mark' color to Typo.

With the default settings of IntelliJ I find it difficult to spot the typos. So I do the following hack to spot and correct them once in a while.
Temporarily change inspection setting to show Typos as Errors.
IntelliJ then highlights the typos as Errors, making it much easier to spot them in the editor. I correct them and then revert the inspection setting changes. The changes can be kept permanently but I don't prefer that!

Android Studio 2.1.1 using tabs, not spaces, even though tabs are not checked in Settings

When editing Java files, if I'm at the end of the line and I type the Enter key, it starts the next line properly indented 4 columns, to match the line above. That's OK but it's indenting with a tab, not spaces, even though in File>Settings>Editor>Java>Tabs and Indents the checkbox for Use tab character is unchecked, and always has been.
If I just type the tab key I also get a tab, not spaces.
I never want to use tab characters; I always want to use spaces. I don't have this problem in Eclipse or Microsoft Visual Studio so it's not some system setting for my PC. Is there some other setting in Android Studio for this?
Edit: I tried the suggestion that Omar Al Halabi (below) made and it didn't work but while testing it I noticed something interesting: This tab problem seems to mainly apply to the beginning of the line, i.e., if I type Enter on the previous line, it immediately tabs over to the first indent position on the following line, using real tabs, not spaces. On the other hand if I'm typing some text on an existing line, once I've typed a little text, if I hit tab, it then tabs over using spaces.

hope this helps,
check Use Tab Character,
give all that values to zero than you not get space on enter in java code, like in below image,
one more thing is you have to change your code format settings or may need to disable it

This is not an answer, but I don't have enough reputation points to post my questions as a comment.
- Is this issue happening in all your Android Studio projects?
- Are you using the Default scheme for the general File->Settings->Editor->Code Style and also for the Java Code Style?
- Have you tried making a new Java Code Style scheme at the Project level for just one project as a test?
EDIT: This is a brute-force/shotgun approach.
Rename your \Users\<username>\.AndroidStudio2.1 directory (e.g., .AndroidStudio2.1_orig)
Open Android Studio and force it to use the default settings by choosing the "I do not have a previous version of Studio or I do not want to import my settings" option when the "Complete Installation" dialog window appears.
Run a recursive 'diff' between the new and old .AndroidStudio2.1 directories to find any changes you've made to the default settings so you can re-apply them. The settings are kept in XML files so they are human-readable. Keep an eye out for any differences that may affect Android Studio use of tabs & spaces, because those might be the source of the problem.
If this does not work, then you may have to re-install Android Studio.

Try opening Settings->Editor->Code Style->Java. Check "Use tab character". Click OK.
Then go to File->Invalidate Caches\Restart -> Invalidate and Restart.
Then, again, go to Settings->Editor->Code Style->Java. Now uncheck "Use tab character" and hit OK.
If it still doesn't work change tab size and indent and then restore them back if you want.

The IDE tries to position the lines as if they belong to the same block. Also very likely you had used the tabs on the previous line. You can try to deactivate Detect and use Existing file indents for editing

Unwanted items in Eclipse XML content assist

I've defined a template to use to help typing out XML string definitions, which I've given the name "astring". In Content Assist, I've turned off XML Tag Proposals:
But I still get these two extraneous options "string" and "comment" coming up as the top suggestions when I hit Ctrl+Space
Am I doing something wrong? Why does unchecking "XML Tag Proposals" and changing the order have no effect?
update:
1) It seems like the extra XML tag proposals only appear in the Android XML editor, not the "standard" one
2) However I get extra template proposals coming up in both editors, until I type some extra characters to narrow down the name.
I am not sure if this is a bug or by design. I think a bug, because I would expect it work like the Java completion whereby it takes into account the characters already typed, as soon as I press the completion key.
So a workaround for the normal XML editor is to press Ctrl+Space before starting to type the name of your template. But you still get the Tag Proposals in the Android XML editor.
Should I enter this as a bug in Eclipse or in the Android plug-in, or both?

Are there any default XML templates (XML / XML Files / Templates) that might be similar to the tag proposals?
You can also check Windows > Preferences > General > Editors > File Associations and switch to a different XML editor of your liking.
As a last resort, try changing the locale to English/US temporarily to avoid a known bug and restart Eclipse. Visit Control Panel; Region/Language, Administrative (or Advanced); Language for non-Unicode Programs; Change system locale.

Moving and vanishing lines of code; trouble with Eclipse's XML Editor

Sometimes my code moves on its own or just disappears in the Eclipse XML editor.
When I highlight the affected code, the highlighted lines try to correct themselves. But when I scroll or drag the mouse in the opposite direction the code shifts again. In essence I will have repeating, missing, and broken lines of code being displayed from an otherwise error free file. The files affected do compile and if I close / re-open them this problem goes away, for the moment. Any ideas on what's happening?
Addition:
Jeff Axelrod provided a link to a new bug report with Google.

This bug is (finally) fixed in ADT 21. The fix is now available in ADT 21 Preview 9, posted a few minutes ago, here: https://android-review.googlesource.com/#/c/44936/1
The reason you get weird visual artifacts is that if a file contains broken DOS line endings (multiple carriage returns without a newline for each carriage return), Eclipse gets very confused. That's Eclipse issue https://bugs.eclipse.org/bugs/show_bug.cgi?id=375421 .
There are two parts to the fix:
(1) First, ADT was fixed such that it no longer introduces these \r\r sequences into the document. This makes sure that you don't get new documents which triggers the weird editing behavior, but it does not retroactively fix older documents with these line endings, so if you open them, you still get weird editing behavior.
(2) Second, there's a new lint check which looks for broken line endings in documents. This runs incrementally, so if you edit an XML file which has this problem, ADT will add an error marker for this problem -- along with a quickfix to perform surgery on the document to fix it.
In short:
Get ADT 21 Preview 9; run Lint on your projects and look for any complaints about files containing broken line endings, and if it finds any, apply the quickfix. From now on, further edits with the layout editor should keep the files consistently formatted.
FYI, the relevant fix is here: https://android-review.googlesource.com/#/c/44936/
Instructions for easily updating SDK Tools and the Eclipse ADT plugin are here: http://tools.android.com/preview-channel
-- Tor
(from the Android tools team)

After some tests, I have found that the option "Automatically format the XML edited by the visual layout editor" (in Preferences | Android | Editors) might be the culprit here.
With my tests, I've found that changing a property (such as the layout_gravity) while in Graphical Layout design mode always screw up the visual display of the file when I go back to the XML (text) mode when this option is ON but that I have no problem when it's off.
If you want to format the XML upon your return from the Graphical Layout design mode, simply use the shortcut Ctrl+Shift+F. Also, I didn't see any problem with using the option "Format on Save"; even when I use it in the Graphical Layout mode; so you can use Ctrl+S instead while you're still in the Graphical Layout mode to both save and format your XML.
I've tried other editors options like "Show range indicator" or "Use characters to show changes in vertical ruler" but I didn't see any difference in behavior with activating or de-activating these options.
Finally, to correct the visual display of the file when it's corrupt; I found that using the shortcut: Ctrl+A, Ctrl+C, Ctrl+V is a little easier than closing/reopening the file. This is equivalent to making a Select All, Copy, Paste; effectively copying the whole XML file over itself.

Still experiencing this bug on Juno (Eclipse 4.2.0, ADT r20).
My fix:
Go to Window -> Preferences -> Android -> Editors.
I have both "Format XML using the standard Android XML..." and "Use Eclipse settings for indentation...." checked. This solved the problem for me.

EDIT:
contain faster method, so it was bring to top:
Ctrl+F -> fill like that:
"Find" "\r\r\n"
"Replace" "\r\n"
Switch "Regular expression" to ON
hit the "Replace all" button
Ctrl+A
deselect text.
be happy =)
Original was here:
Just don't hide that issue, if you may fix it. Some times even closing the XML file didn't help.
For fix it let's look at the reason of it. First of all Turn On "Show Whitespace Characters" (Window > Preferences > General > Editors > Text Editors > Show whitespace characters )
Then back to your XML-file.
In scaled image you may see the difference of "\n"-symbol colors;
then just put cursor to that symbol, which is more dark.
look, two lines was selected 0o... that's may be the reason!
so just delete it, and press "Enter" or "Return" button for add "\n" symbol.
Hope it help you.
also you may find the other symbol of endline:
Just delete it too, and your XML will have a great look!
P.S. sorry for hyperlinks, i'm newbie and on SO i can't upload image or more than 2 links. so hope you'll get the point without additional pictures ;)
P.P.S. Thx to guy who vote up, now i can provide this with images.

I had the same difficulty and finally found the solution: Right click in the editor, select Source/Cleanup Document.

I had the same issue. The following steps were the solution. Link suggest its worked for others.
Go to Preferences -> keys
Unbind copy, paste, and cut (hit "apply", then "ok")
repeat step 1
Restore unbound commands from step 2 (I didn't restore cut, but I'm sure you'd be fine)
Notice there are 2 bindings for each of the 3 commands
Unbind secondary function for both copy and paste (leave ctl+c/ctl+v [copy/paste] bound)
At this point you should only have 2 bindings set to perform copy/paste (i.e., ctl+c/ctl+v)
Hit apply -> OK
This solution was found here.

When this bug appears with new versions of ADT (which are mandatory for fixing and where bug should not appear often) just use Lint tool to fix it..
Find it in Lint warnings and click yellow bulb icon in upper right corner of that Lint warnings list..
Hope it will help somebody

XML Problems with Eclipse / Android SDK

I'm fairly new to eclipse and android development, and I'm having what must be a pretty simple error to fix. I've done some development on my laptop and never encountered these errors. (I currently only have access to public computers, and have eclipse and the SDK installed on a USB drive.)
The first strange thing I noticed when editing the main layout was that there is no properties window to allow easy editing of various layouts and objects. (There was on my old computer) I have not been able to figure out how to get this window to appear.
So after adding one textView and modifying its properties by hand, I receive the following two errors when I attempt to run the program. (No code has even been added yet, just one textView)
http://i.stack.imgur.com/9VGT0.png (Link to screenshot of error, only have 6 rep)
All I've done is change the textView to have center gravity, fill_parent layout width, and a textSize of 22sp. I've tried googling the errors to figure out what I'm doing wrong but have been unsuccessful. Anybody encounter this before? Also, if anybody knows how to make the properties window appear it would be a great help.
Thanks in advance

When compiling Android stuff in Eclipse, you have to press the "Run" button with a .java file open, not with .xml file open. No idea why, but the glitch is there and you'll soon remember to avoid it.
To fix the current state, delete the 'main.out.xml' file (it was automatically created on compile). Then in the 'Problems' tab (the one on your screenshot), manually delete each problem it shows you. After that, press Run again with a .java file open and it should solve whatever is there now.

You get the properties window back from the "Show View" dialog, which is accessible from the "Window" -> "Show View" -> "Other ..." menu.
Once the dialog is open, look in the "General" folder for "Properties".

right click the .xml file and go to Open With... there are many ways to open it. I prefer the xml editor but there is also a layout editor available.

Your XML is not well-formed, e.g. mismatched elements, mismatched quotes, etc. Show your XML for more specific assistance.