How can I fix Design editor is unavailable until a successful build error

Question

I started to learn Android Studio from yesterday  I try to echo out simple  Hello World     lt  xml version  1 0  encoding  utf-8   gt   lt RelativeLayout     android id    id activity main      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 paddingLeft  16dp      android paddingRight  16dp      android paddingTop  16dp      android paddingBottom  16dp      tools context   MainActivity  gt        lt TextView         android layout width  wrap content          android layout height  wrap content          android text  Hello World     gt    lt  RelativeLayout gt    but when I clicked  design  view  this error is showing      Design editor is unavailable until a successful build   How Can I fix this error  I just downloaded Android Studio yesterday       I just noticed that my xml code is causing error  that is why this may be not working  Thank you so much

User · Answer

there are different solutions to this problem but I at the first u have to check to (build.gradle) maybe it empty. this especially if u downloaded code, not u created
and u will find just this line "// Top-level build file where you can add configuration options common to all sub-projects/modules." in this case, u need to open a new project and make copy-paste.then check the SDK and other settings.finally u have to sync

User · Answer

just click file in your android studio then click Sync Project with Gradle Files    if it won t work  click Build click Clean Project   it always work for me

User · Answer

Go online before starting android studio   Then go file- New project Follow onscreen steps   Then wait It will download the necessary files over internet  And that should fix it

User · Answer

I have the latest Android Studio 3 6 1 and yet couldn t build a simple  Hello World  app as documented here  https   codelabs developers google com codelabs android-training-hello-world index html index    2F   2Fandroid-training 3    I applied various steps discussed above including the 2 most viable options which should have really solved this issue      File- Sync Project with Gradle Files  and    File- Invalidate Caches Restart  but to no avail    Even though  I suspect standard answer should be one of these 2 options only for most  but for me the resolution came only after I went inside the  File- Project Structure  and checked my SDK versions configured  Android Studio and Gradle were using different JDK versions and locations    Android Studio  C  Program Files Java jdk1 8 0 241 Gradle  C  Program Files Java jdk-13 0 2   I had previously defined my JAVA HOME environment variable by downloading latest JAVA SDK on my own from ORACLE website  Where Gradle was using the  JAVA HOME  JAVA SDK version and Android Studio the built in SDK which came along with Android Studio    Once I switched both to versions JDK 1 8    Any version as long as it is JDK 1 8  for that matter   then simple  File- Synch     option worked perfectly fine for me    Good luck the solution is in between one of these 2 options only if you are stuck  just ensure you validate JDK versions being referred to

User · Answer

In my case  the Windows Firewall was blocking Android Studio  i e  java exe from Android Studio s jre bin folder  from connecting to sites and downloading data  After Windows asked me if I wanted to allow the app through the firewall  I had to do a manual sync File - gt  Sync project with gradle files  After that  things were still disfunctional  a manual download of an SDK version 28 was necessary from Tools - gt  SDK Manager

User · Answer

I had tried to change SDK Version   Check below image  In that I changed 27 from Android P

User · Answer

Edit you xml file in Notepad   and build it again  It s work for me

User · Answer

Simply restart the Android Studio  In my case  I was offline before starting the Android Studio  but online when I did restart

User · Answer

Install missing plataform and sync project

User · Answer

None of the above worked for me  what worked for me is to go to File - gt  Invalidate Caches   Restart

User · Answer

Quit the Android Studio   not close the project Quit the Android Studio  then open the project and go to Android Studio  gt  Build  gt  Clean Project   Then  Android Studio  gt  File  gt  Sync Project with Gradles Files as the pic below    If your problem still exists then click the Install build tool as the pic below and then  Android Studio  gt  File  gt  Sync Project with Gradles Files

User · Answer

First  find your build gradle in your all modules in project  include app build gradle  Find the compileSdkVersion inside android tag  in this case  compile sdk version is 30     Next  open SDK Manager  gt  SDK Platforms  check correct version then install selected platforms  After installed  go to menu File  gt  Sync project with Gradle files       This issue often appear when project has many modules  each module use different compile SDK version  so app may be able to build but IDE have some issue while processing your resources

User · Answer

If you are in corporate setting where there is a proxy server  double check your proxy settings     Go File -  Settings Search for Proxy   Fill out as appropreate   Test connection     If you think you fat-fingered the password  there is a Clear passwords button you can click to where you can re-enter your creds  HTH

User · Answer

I faced same issue even after rebuilding my project multiple times successfully  I closed the project and re-opened  issue resolved

User · Answer

Go to File   Sync Project with Gradles Files

User · Answer

I got this problem after i added a line in my build gradle file   compile  com balysv material-ripple 1 0 2    Solution  I changed this line to   implementation  com balysv material-ripple 1 0 2    and then pressed sync again   Tada  all was working again

User · Answer

Do this  Build -  Rebuild Project

User · Answer

In my case  it was because it didn t like that I left the minSDK and targeSdk in the manifest  Go figure

[android-studio] How can I fix "Design editor is unavailable until a successful build" error?

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