andrewhayden
commented
4 years ago Hi there,
I can't speak for the team at this point, but archive-patcher was not designed to generate patches on Android. Apply, yes - generate, no. The zip implementation on Android is not the same as the Zip implementation elsewhere, and there are some minor differences that can, from time to time, result in behavioral differences. I believe this one is known, and has to do with the way Android resets (or does not reset) the internal flags of Inflater objects when trying to reset the Inflater for further use.
If possible, it's generally better to generate patches on another platform. Applying them on Android absolutely should work, but generating them there may not.
aravindakv
I am usinng archive-patcher on Android. I am getting below exception while generating patch, please help me.
2020-07-24 16:19:56.145 920-920/? E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.apkpatcher, PID: 920 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.apkpatcher/com.example.apkpatcher.MainActivity}:java.lang.NullPointerException: Inflater has been closed at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3623) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3775) at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83) at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2261) at android.os.Handler.dispatchMessage(Handler.java:107) at android.os.Looper.loop(Looper.java:237) at android.app.ActivityThread.main(ActivityThread.java:8107) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:496) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1100)
Caused by: java.lang.NullPointerException: Inflater has been closed at java.util.zip.Inflater.ensureOpen(Inflater.java:416) at java.util.zip.Inflater.reset(Inflater.java:370) at com.google.archivepatcher.generator.DefaultDeflateCompressionDiviner.divineDeflateParameters(DefaultDeflateCompressionDiviner.java:173) at com.google.archivepatcher.generator.DefaultDeflateCompressionDiviner.divineDeflateParameters(DefaultDeflateCompressionDiviner.java:114) at com.google.archivepatcher.generator.PreDiffExecutor.generatePreDiffPlan(PreDiffExecutor.java:216) at com.google.archivepatcher.generator.PreDiffExecutor.prepareForDiffing(PreDiffExecutor.java:157) at com.google.archivepatcher.generator.FileByFileV1DeltaGenerator.generateDelta(FileByFileV1DeltaGenerator.java:81) at com.example.apkpatcher.DeltaCounter.generatePatch(DeltaCounter.java:97) at com.example.apkpatcher.MainActivity.onCreate(MainActivity.java:37) at android.app.Activity.performCreate(Activity.java:7957) at android.app.Activity.performCreate(Activity.java:7946) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1307) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3598) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3775) at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83) at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2261) at android.os.Handler.dispatchMessage(Handler.java:107) at android.os.Looper.loop(Looper.java:237) at android.app.ActivityThread.main(ActivityThread.java:8107) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:496) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1100) 2020-07-24 16:21:01.356 1578-1578/? E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.apkpatcher, PID: 1578 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.apkpatcher/com.example.apkpatcher.MainActivity}: java.lang.NullPointerException: Inflater has been closed at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3623) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3775) at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83) at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2261) at android.os.Handler.dispatchMessage(Handler.java:107) at android.os.Looper.loop(Looper.java:237) at android.app.ActivityThread.main(ActivityThread.java:8107) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:496) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1100) Caused by: java.lang.NullPointerException: Inflater has been closed at java.util.zip.Inflater.ensureOpen(Inflater.java:416) at java.util.zip.Inflater.reset(Inflater.java:370) at com.google.archivepatcher.generator.DefaultDeflateCompressionDiviner.divineDeflateParameters(DefaultDeflateCompressionDiviner.java:173) at com.google.archivepatcher.generator.DefaultDeflateCompressionDiviner.divineDeflateParameters(DefaultDeflateCompressionDiviner.java:114) at com.google.archivepatcher.generator.PreDiffExecutor.generatePreDiffPlan(PreDiffExecutor.java:216) at com.google.archivepatcher.generator.PreDiffExecutor.prepareForDiffing(PreDiffExecutor.java:157) at com.google.archivepatcher.generator.FileByFileV1DeltaGenerator.generateDelta(FileByFileV1DeltaGenerator.java:81) at com.example.apkpatcher.DeltaCounter.generatePatch(DeltaCounter.java:97)