Fix error react native run-android multidex issue

rn-error-multidex.md

Error:

➜ cd android && ./gradlew build --warning-mode=all
...
FAILURE: Build failed with an exception.
 
* What went wrong:
Execution failed for task ':app:transformClassesWithDexBuilderForDebug'.
> There was a failure while executing work items
   > A failure occurred while executing com.android.build.gradle.internal.transforms.DexArchiveBuilderTransform$DexConversionWorkAction
      > Failed to process /home/blint/www/react-native/MyDoctor/android/app/build/intermediates/javac/debug/classes
...

Fix:

• add multidex true on /android/app/build.gradle

  android {
  ...
    defaultConfig {
          ...
          minSdkVersion rootProject.ext.minSdkVersion
          targetSdkVersion rootProject.ext.targetSdkVersion
          multiDexEnabled true
    ...
  

• uncomment org.gradle.jvmargs=-Xmx2048m... on /android/gradle.properties

  ...
  # Specifies the JVM arguments used for the daemon process.
  # The setting is particularly useful for tweaking memory settings.
  # Default value: -Xmx10248m -XX:MaxPermSize=256m
  org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
  ...
  

• remove build folder on /android/app/build/
• rerun npx react-native run-android or ./gradlew build