Gradle error: Minimum supported Gradle version is 3.3. Current version is 3.2

Make sure you are using default gradle wrapper in Open File > Settings > Build,Execution,Deployment > Build Tools > Gradle.

Updated Answer: For Android Studio 3.1 & above

For Android Studio 3.1 & above, the distributionUrl has been updated to version 4.6 from version 4.4. Your gradle-wrapper.properties should look like this:

#DATE
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip

Updated Answer:

For Android Studio 3.0 & above, the distributionUrl has been updated to version 4.1 from version 3.3. Your gradle-wrapper.properties should look like this:

#DATE
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip

Original Answer:

#DATE
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip