PlatformException in Release build: AbstractITextEvent is only for internal usage

[abiselvaraj]

Hello,

I am using your library to edit existing PDFs. The app works properly when I test it in Debug mode, but I am receiving this error when I run the app in Release mode:

Unhandled Exception: PlatformException(removePdfPages_exception, java.lang.UnsupportedOperationException: AbstractITextEvent is only for internal usage.

Please help me understand the solution to resolving this issu. Thank you

[chaudharydeepanshu]

@abiselvaraj Sorry, for this issue. I should have provided the info in the documentation.

You will need to create a file named proguard-rules.pro in your project Android->App->proguard-rules.pro.

In that file you need to add the below block of text at the end of the file.

# To use iText in release mode Otherwise we get
# PlatformException AbstractITextEvent is only for internal usage.
-keep public class com.itextpdf.**
-keep public class org.apache.**

Let me know if you have anymore queries.

[abiselvaraj]

Thank you for your reply.
I did come across that solution through a stackoverflow thread, but it does not work, as I found out that proguard is obsolete now and gradle gives you an error when you try enable it through app/build.gradle by using proguard: true.

[chaudharydeepanshu]

Sorry to hear that. But can you share an example project?

Because I have been using it in my release apps with the above solution.

Also I didn't have to use proguard: true.

Full repository link: https://github.com/chaudharydeepanshu/files_tools

[chaudharydeepanshu]

@abiselvaraj Also, below is the config I use for release in my App->build.gradle.

buildTypes {
        release {
            // Enables code shrinking, obfuscation, and optimization for only
            // your project's release build type.
            minifyEnabled true

            // Enables resource shrinking, which is performed by the
            // Android Gradle plugin.
            shrinkResources true

            // Includes the default ProGuard rules files that are packaged with
            // the Android Gradle plugin. To learn more, go to the section about
            // R8 configuration files.
            proguardFiles getDefaultProguardFile(
                    'proguard-android-optimize.txt'),
                    'proguard-rules.pro'

            signingConfig signingConfigs.release

            ndk {
                debugSymbolLevel 'FULL'

                // By default, the app bundle contains your Dart code and the Flutter
                // runtime compiled for armeabi-v7a (ARM 32-bit), arm64-v8a (ARM 64-bit), and x86-64 (x86 64-bit).
                // For reference see https://docs.flutter.dev/deployment/android#build-an-app-bundle.
                // But without these filters in case of some 3rd party plugins supporting x86 it will generates x86 folder
                // marking the app compatible with x86 even when its not, this will lead to crash on x86 devices.
                // For more info see https://github.com/flutter/flutter/issues/73943#issuecomment-979741146.
                abiFilters 'arm64-v8a', 'armeabi-v7a', 'x86_64'
            }
        }
}

[abiselvaraj]

Your config file should be able to help me out. I guess I access the configuration files using the obsolete method. I will try this one out. Thank you very much.

[chaudharydeepanshu]

@abiselvaraj No problem. If you still face problems with it then let me know we will reopen it.