frequent issues arising in android view Error parsing XML unbound prefix

Question

I have frequent problem in android view  Error parsing XML  unbound prefix on Line 2    lt  xml version  1 0  encoding  utf-8   gt   lt LinearLayout android orientation  vertical  android id    id myScrollLayout   android layout width  fill parent   android layout height  wrap content  gt       lt TextView android layout height  wrap content  android layout width  fill parent       android text  Family  android id    id Family       android textSize  16px  android padding  5px       android textStyle  bold  android gravity  center horizontal  gt       lt  TextView gt        lt ScrollView xmlns android  http   schemas android com apk res android          android layout width  fill parent  android layout height  wrap content          android orientation  vertical  android scrollbars  vertical  gt           lt LinearLayout android orientation  vertical  android id    id myMainLayout           android layout width  fill parent   android layout height  wrap content  gt           lt  LinearLayout gt       lt  ScrollView gt    lt  LinearLayout gt

User · Answer

You just need to add proper name space in your root tag   xmlns android  http   schemas android com apk res android  Android elemets are declared in this name space Its same as importing class or package

User · Answer

I had the same problem  and found that the solution was to add the android tools to the first node  In my case it is a LineraLayout        lt LinearLayout xmlns android  http   schemas android com apk res android      xmlns tools  http   schemas android com tools      android layout width  match parent      android layout height  match parent       android orientation  vertical  gt

User · Answer

I got this error in Xamarin when I was using      lt android support v7 widget CardView       android layout width  match parent        android layout height  wrap content        card view cardElevation  4dp        card view cardCornerRadius  5dp        card view cardUseCompatPadding  true  gt       lt  android support v7 widget CardView gt    in a layout file without installing the nuget package for android support v7 widget CardView   Installing the applicable nuget package fixed the issue   Hope it helps  I didn t see this answer anywhere in the list

User · Answer

I had this same problem    Make sure that the prefix  android  whatever   is spelled correctly and written correctly   In the case of the line xmlns android  http   schemas android com apk res android  make sure that you have the full prefix xmlns android and that it is spelled correctly   Same with any other prefixes - make sure they are spelled correctly and have android  name    This is what solved my problem

User · Answer

In my case the error was not caused by any of the above xml namespace issues  Instead it was the location of the android id attribute - it needed to be the first item in the particular element s declaration    So this     lt TextView android layout width  fill parent         android layout height  wrap content        android id    id bottomtext         android singleLine  true    gt        needed to read like this    lt TextView android id    id bottomtext         android layout width  fill parent         android layout height  wrap content        android singleLine  true    gt

User · Answer

This error usually occurs if you have not included the xmlns mm properly  it occurs usually in the first line of code   for me it was    xmlns mm  http   millennialmedia com android schema   that i missed in first line of the code   lt RelativeLayout xmlns android  http   schemas android com apk res android  xmlns mm  http   millennialmedia com android schema  android layout width  wrap content  android layout height  wrap content  android gravity  center  android layout marginTop  50dp  android layout marginBottom  50dp  android background   android color transparent   gt

User · Answer

OK  there are lots of solutions here but non actually explain the root cause of the problem so here we go   when you see an attribute like android layout width  match parent  the android part is the prefix  the format for an attribute here is PREFIX NAME  VALUE   in XML  namespaces and prefixes are ways to avoid naming conflicts for example we can have two distinct attributes with same name but different prefixes like  a a  val  and b a  val    to use prefixes like android or app or any other your should define a namespace using xmlns attribute   so if you have this issue just find prefixes that do not have a namespace defined  if you have tools     you should add tools namespace as some answeres suggested  if you have app     attribute you should add xmlns app  http   schemas android com apk res-auto  to the root element  Further reading   XML Namespaces simple explanation  XML Namespaces in W3

User · Answer

Beside all this  There is also a scenario where this error occures-  When you or your library project define custom attribute int attr xml  And you use these attributes in your layout file without defining namespace     Generally we use this namespace definition in header of our layout file   xmlns android  http   schemas android com apk res android    Then make sure all attributes in your file shoud start with   android ATTRIBUTE-NAME   You need to identfy if some of your attirbute is not starting with something other than android ATTRIBUTE-NAME like  temp ATTRIBUTE-NAME   In this case you have this  temp  also as namespace  generally by including-  xmlns temp  http   schemas android com apk res-auto

User · Answer

As you mention  you need to specify the right namespace  You also see this error with an incorrect namespace    lt  xml version  1 0  encoding  utf-8   gt   lt ScrollView xmlns  http   schemas android com apk res android           android layout width  fill parent           android layout height  fill parent           android padding  10dip  gt    will not work      Change    xmlns  http   schemas android com apk res android       to   xmlns android  http   schemas android com apk res android       The error message is referring to everything that starts  android   as the XML does not know what the  android   namespace is       xmlns android defines it

User · Answer

A couple of reasons that this can happen   1  You see this error with an incorrect namespace  or a typo in the attribute  Like  xmlns  is wrong  it should be xmlns android  2  First node needs to contain  xmlns android  http   schemas android com apk res android   3  If you are integrating AdMob  check custom parameters like ads adSize  you need  xmlns ads  http   schemas android com apk lib com google ads   4  If you are using LinearLayout you might have to define tools   xmlns tools  http   schemas android com tools

User · Answer

I m going to add a separate answer just because I don t see it here  It s not 100  what Pentium10 asked for  but I ended up here by searching for Error parsing XML  unbound prefix  Turns out I was using custom parameters for AdMob ads like ads adSize  but I hadn t added      xmlns ads  http   schemas android com apk lib com google ads    to the layout  Once I added it it worked great

User · Answer

It usually happens to me when I misspell android - I just type andorid or alike  and it s not obvious at first sight especially after many hours of programming  so I just do a search for  android  one by one and see if search skips one tag - if it does then I have a close look and I see where was typo

User · Answer

unbound prefix error for ViewPager Indicator      Along with the following header tags in your parentLayout   xmlns android  http   schemas android com apk res android  xmlns tools  http   schemas android com tools    Also add   xmlns app  http   schemas android com apk res-auto    This did the trick for me

User · Answer

For me  I got the  unbound prefix  error on first line here  although I had misspelled android on the fourth line    lt ScrollView xmlns android  http   schemas android com apk res android  android layout width  fill parent  android layout height  fill parent  anrdoid fillViewport  true   gt

User · Answer

I ll throw in a little more for the newbies and for folks  like myself  that don t understand XML   The answers above a pretty good  but the general answer is that you need a namespace for any namespace used in the config xml file    Translation  Any XML tag name that has  is a tag with a namespace where blah is the namespace and fubar is the XML tag  The namespace lets you use many different tools to interpret the XML with their own tag names  For example  Intel XDK uses the namespace intelxdk and android uses android  Thus you need the following namespaces or the build throws up blood  i e  Error parsing XML  unbound prefix  which is translated to  You used a namespace  but did not define it      xmlns android  http   schemas android com apk res android    xmlns intelxdk  http   xdk intel com ns v1

User · Answer

This error may occurs in the case you use un-defined prefix such as    lt LinearLayout xmlns android  http   schemas android com apk res android  android layout width  match parent  android layout height  match parent  android orientation  vertical   gt    lt TabHost     XYZ id   android id tabhost      android layout width  fill parent      android layout height  fill parent   gt     lt  TabHost gt    Android compiler does not know what is XYZ since it was not defined yet   In your case  you should add below define to root node of the xml file   xmlns android  http   schemas android com apk res android

[xml] frequent issues arising in android view, Error parsing XML: unbound prefix

Examples related to xml

Examples related to android

Examples related to eclipse

Examples related to android-linearlayout