[android] Gradle buildConfigField BuildConfig cannot resolve symbol

3 Answers

I was getting the same bug. Try to click on synchronize, on the right side of save. Do that after gradle sync.


I am using Gradle to build my Android application. I am trying to use some flags based on the build type (release or debug).

My Gradle file looks like this:

android {
    buildTypes {
        debug {
            buildConfigField 'boolean', 'PREPROD', 'true'
            buildConfigField 'boolean', 'STAGING', 'false'

        release {
            buildConfigField 'boolean', 'PREPROD', 'false'
            buildConfigField 'boolean', 'STAGING', 'false'

And if I try to call BuildConfig.PREPROD or BuildConfig.STAGING I get a "Cannot resolve symbol" error. The Gradle sync was successful, so I don't know if I forgot some steps in order to be able to use this feature?

The generated BuildConfig.java file is the following (in build/source/buildConfig/debug/com.example.myapp):

package com.example.myapp;

public final class BuildConfig {
  public static final boolean DEBUG = Boolean.parseBoolean("true");
  public static final String PACKAGE_NAME = "com.example.myapp";
  public static final String BUILD_TYPE = "debug";
  public static final String FLAVOR = "";
  public static final int VERSION_CODE = 400;
  public static final String VERSION_NAME = "";

In my case, the problem was that I had just renamed a module of my project, but that module's name references weren't automatically updated on the AndroidManifest.xml.

Manually renaming those and rebuilding the project solved the issue.

Make sure you add your parameter also to the defaultConfig. You are probably running the default buildVarient while your parameter is defined in a speciffic buildVariant.

in the build gradle file use this:

 defaultConfig {
        buildConfigField('String' , 'myParameter', 'someValue')

Then, in the code use this:

String myParam= BuildConfig.myParameter;

Hope this helps, M.A :)

Changes in gradle build files don't refresh the generation of the BuildConfig class, even if you click the yellow "sync now" bar at the top. A full clean will force generating this file.

In Android Studio: Build -> Clean Project