LOB application could not be wrapped error

Artikkel
12/05/2023

This article solves the error message that occurs when you try to wrap a line of business (LOB) app by using the Microsoft Intune App Wrapping Tool for Android.

Symptoms

When you wrap a LOB app by using the Microsoft Intune App Wrapping Tool for Android, the tool crashes, and you receive an error message that resembles as follows:

DBG [APKTool] Finish encoding directory into APK file:<path of .apk>
WRN Verbose logs can be found at: <path of .apk logfile>.
ERR The application could not be wrapped.
org.jf.util.ExceptionWithContext: Exception occurred while writing code_item for method <method name>
org.jf.dexlib2.writer.DexWriter.writeDebugAndCodeItems(DexWriter.java:825)
org.jf.dexlib2.writer.DexWriter.writeTo(DexWriter.java:268)
org.jf.dexlib2.writer.DexWriter.writeTo(DexWriter.java:246)
brut.androlib.src.SmaliBuilder.build(SmaliBuilder.java:61)
brut.androlib.src.SmaliBuilder.build(SmaliBuilder.java:36)
brut.androlib.Androlib.buildSourcesSmali(Androlib.java:417)
brut.androlib.Androlib.buildSources(Androlib.java:348)
brut.androlib.Androlib.build(Androlib.java:300)
com.microsoft.intune.mam.apppackager.utils.APKToolWrapper.encodeAPK(APKToolWrapper.java:172)
com.microsoft.intune.mam.apppackager.AppPackager.packageApp(AppPackager.java:111)
com.microsoft.intune.mam.apppackager.PackagerMain.mainInternal(PackagerMain.java:213)
com.microsoft.intune.mam.apppackager.PackagerMain.main(PackagerMain.java:57)
org.jf.util.ExceptionWithContext: Error while writing instruction at code offset 0x13
org.jf.dexlib2.writer.DexWriter.writeCodeItem(DexWriter.java:1098)
org.jf.dexlib2.writer.DexWriter.writeDebugAndCodeItems(DexWriter.java:821)
org.jf.dexlib2.writer.DexWriter.writeTo(DexWriter.java:268)
org.jf.dexlib2.writer.DexWriter.writeTo(DexWriter.java:246)
brut.androlib.src.SmaliBuilder.build(SmaliBuilder.java:61)
brut.androlib.src.SmaliBuilder.build(SmaliBuilder.java:36)
brut.androlib.Androlib.buildSourcesSmali(Androlib.java:417)
brut.androlib.Androlib.buildSources(Androlib.java:348)
brut.androlib.Androlib.build(Androlib.java:300)
com.microsoft.intune.mam.apppackager.utils.APKToolWrapper.encodeAPK(APKToolWrapper.java:172)
com.microsoft.intune.mam.apppackager.AppPackager.packageApp(AppPackager.java:111)
com.microsoft.intune.mam.apppackager.PackagerMain.mainInternal(PackagerMain.java:213)
com.microsoft.intune.mam.apppackager.PackagerMain.main(PackagerMain.java:57)
org.jf.util.ExceptionWithContext: Unsigned short value out of range: <65536 or a value that's greater than 65536>
org.jf.dexlib2.writer.DexDataWriter.writeUshort(DexDataWriter.java:116)
org.jf.dexlib2.writer.InstructionWriter.write(InstructionWriter.java:348)
org.jf.dexlib2.writer.DexWriter.writeCodeItem(DexWriter.java:1058)

Cause

The problem occurs if the LOB app reaches or nearly reaches the 64K method reference limit of DEX files. In this scenario, the Microsoft Intune Wrapping Tool can't add the necessary Intune code to the app without exceeding this limit.

Solution

To fix this problem, complete the following steps.

Install the latest version of the Microsoft Intune App Wrapping Tool for Android.
Enable multidex for your Android app.

Test whether the problem is fixed. If the problem persists, try the following methods in the given order:

Examine the multidex configuration to see whether you specify any classes in the primary DEX file. You may experience problems if too many classes are added to the primary DEX file. For more information, see https://developer.android.com/studio/build/multidex#keep.

To work around this problem, reduce the number of classes that are specified in the primary DEX file.
Enable code shrinking by using ProGuard. For more information, see https://developer.android.com/studio/build/shrink-code#shrink-code.

Note

Some third-party libraries may require additional ProGuard configuration.

More information

For more information about the 64K method reference limit of DEX files, see Enable multidex for apps with over 64K methods.

Third-party information disclaimer

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

Third-party contact disclaimer

Microsoft provides third-party contact information to help you find additional information about this topic. This contact information may change without notice. Microsoft does not guarantee the accuracy of third-party contact information.

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