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A tool to help you debug TransactionTooLargeExceptions on Android 7+

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guardian/toolargetool

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toolargetool

Available on maven central

A tool for debugging TransactionTooLargeException on Android.

"Most underrated solution." - Kedar Paranjape, Jun 7 '18 at 14:26

Usage

  1. Include toolargetool as a dependency (you can remove it again once you've debugged your crash):

    • toolargetool is available from mavenCentral()

    • Add implementation 'com.gu.android:toolargetool:0.3.0' in your module's build.gradle:

      dependencies {
          ...
          implementation 'com.gu.android:toolargetool:0.3.0'
      }
      
  2. Import The package

    import com.gu.toolargetool.TooLargeTool;
    
  3. Add code to start logging during app start, for example in your Application.onCreate method:

    TooLargeTool.startLogging(this);
    
  4. Monitor logcat output to see which components are writing substantial data to the transaction buffer and when:

    $ adb logcat -s TooLargeTool
    

    Example logcat output (TODO: improve this example):

    D/TooLargeTool: MainActivity.onSaveInstanceState wrote: Bundle@200090398 contains 1 keys and measures 0.6 KB when serialized as a Parcel
                                                                            * android:viewHierarchyState = 0.6 KB
    

Release process

Note: these instructions will only work if you have the required credentials for publishing to the com.gu Sonatype repository.

  1. Increase all the version number in toolargetool/build.gradle
  2. Make a commit and tag it with git tag -a v<version number> -m "<message>".
  3. Run ./gradlew publishReleasePublicationToSnapshotRepository.