Android混淆崩溃问题
Android混淆崩溃问题
- 一、原始崩溃日志
- 二、还原后的崩溃日志
- 三、源代码
- 四、解决方案
- 五、参考文章
- 六、Finally
上周四，导出『神马笔记』发布包的时候，遇到混淆后NullPointerException问题。
一、原始崩溃日志
java.lang.NullPointerException: throw with null exception
at app.haiyunshan.whatsnote.tag.c.a.b(Unknown Source:1)
at app.haiyunshan.whatsnote.tag.b.b.<init>(Unknown Source:24)
at app.haiyunshan.whatsnote.tag.b.b.<init>(Unknown Source:1)
at app.haiyunshan.whatsnote.tag.b.b$a.a(Unknown Source:2)
at app.haiyunshan.whatsnote.tag.b.a.apply(Unknown Source:4)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:194)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1390)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:235)
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:501)
at app.haiyunshan.whatsnote.tag.b.b$a.a(Unknown Source:44)
at app.haiyunshan.whatsnote.tag.b.b.m(Unknown Source:8)
at app.haiyunshan.whatsnote.record.b.Ua.f(Unknown Source:0)
at app.haiyunshan.whatsnote.record.b.wa.apply(Unknown Source:2)
at java.util.Optional.map(Optional.java:211)
at app.haiyunshan.whatsnote.record.b.Ua.j(Unknown Source:19)
at app.haiyunshan.whatsnote.record.b.Ua.<init>(Unknown Source:9)
at app.haiyunshan.whatsnote.record.b.Ua.a(Unknown Source:2)
at app.haiyunshan.whatsnote.record.b.ra.apply(Unknown Source:2)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:194)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1390)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:235)
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:501)
at app.haiyunshan.whatsnote.record.b.Ua.<init>(Unknown Source:49)
at app.haiyunshan.whatsnote.record.b.Ua.h(Unknown Source:4)
at app.haiyunshan.whatsnote.record.EntranceFragment$TagSection.<init>(Unknown Source:7)
at app.haiyunshan.whatsnote.record.EntranceFragment.b(Unknown Source:225)
at androidx.fragment.app.h.g(Unknown Source:13)
at androidx.fragment.app.t.a(Unknown Source:639)
at androidx.fragment.app.t.h(Unknown Source:38)
at androidx.fragment.app.t.a(Unknown Source:46)
at androidx.fragment.app.a.e(Unknown Source:165)
at androidx.fragment.app.t.a(Unknown Source:38)
at androidx.fragment.app.t.b(Unknown Source:114)
at androidx.fragment.app.t.c(Unknown Source:88)
at androidx.fragment.app.t.p(Unknown Source:21)
at androidx.fragment.app.t.e(Unknown Source:9)
at androidx.fragment.app.t.f(Unknown Source:6)
at androidx.fragment.app.k.a(Unknown Source:4)
at androidx.fragment.app.FragmentActivity.onStart(Unknown Source:15)
at androidx.appcompat.app.AppCompatActivity.onStart(Unknown Source:0)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1392)
at android.app.Activity.performStart(Activity.java:7252)
at android.app.ActivityThread.handleStartActivity(ActivityThread.java:2970)
at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:180)
at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:165)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:142)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:70)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1831)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:201)
at android.app.ActivityThread.main(ActivityThread.java:6806)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:873)
二、还原后的崩溃日志
java.lang.NullPointerException: throw with null exception
at app.haiyunshan.whatsnote.tag.entry.ColorEntry.getIcon(Unknown Source:1)
at app.haiyunshan.whatsnote.tag.entity.ColorEntity.<init>(Unknown Source:24)
at app.haiyunshan.whatsnote.tag.entity.ColorEntity.<init>(Unknown Source:1)
at app.haiyunshan.whatsnote.tag.entity.ColorEntity$Factory.create(Unknown Source:2)
lambda$create$62
at app.haiyunshan.whatsnote.tag.entity.-$$Lambda$ColorEntity$Factory$6WW9IJhdkHoDaTXQiSt52V3OmcM.apply(Unknown Source:4)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:194)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1390)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:235)
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:501)
at app.haiyunshan.whatsnote.tag.entity.ColorEntity$Factory.create(Unknown Source:44)
lambda$create$62
at app.haiyunshan.whatsnote.tag.entity.ColorEntity.obtain(Unknown Source:8)
at app.haiyunshan.whatsnote.record.entity.TagEntity.lambda$getColor$86(Unknown Source:0)
at app.haiyunshan.whatsnote.record.entity.-$$Lambda$TagEntity$j9logEgPJpykZJA9QwTxs0W8WDI.apply(Unknown Source:2)
at java.util.Optional.map(Optional.java:211)
at app.haiyunshan.whatsnote.record.entity.TagEntity.getColor(Unknown Source:19)
at app.haiyunshan.whatsnote.record.entity.TagEntity.<init>(Unknown Source:9)
at app.haiyunshan.whatsnote.record.entity.TagEntity.add(Unknown Source:2)
areContentsTheSame
countOfRecord
lambda$countOfRecord$88
lambda$countOfRecord$89
lambda$countOfRecord$90
lambda$getColor$85
lambda$new$84
setColor
at app.haiyunshan.whatsnote.record.entity.-$$Lambda$TagEntity$EkanLFnR-JUISmAi7b6E8piShD8.apply(Unknown Source:2)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:194)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1390)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:235)
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:501)
at app.haiyunshan.whatsnote.record.entity.TagEntity.<init>(Unknown Source:49)
at app.haiyunshan.whatsnote.record.entity.TagEntity.toList(Unknown Source:4)
at app.haiyunshan.whatsnote.record.EntranceFragment$TagSection.<init>(Unknown Source:7)
at app.haiyunshan.whatsnote.record.EntranceFragment.lambda$onRestart$64(Unknown Source:225)
onActivityCreated
onDoneClick
requestDrag
at androidx.fragment.app.Fragment.getAllowReturnTransitionOverlap(Unknown Source:13)
performActivityCreated
setRetainInstance
at androidx.fragment.app.FragmentManagerImpl.addAddedFragments(Unknown Source:639)
addBackStackState
addFragment
animateRemoveFragment
attachController
attachFragment
beginTransaction
completeExecute
dispatchConfigurationChanged
dispatchContextItemSelected
dispatchCreateOptionsMenu
dispatchMultiWindowModeChanged
dispatchOnFragmentActivityCreated
dispatchOnFragmentAttached
dispatchOnFragmentViewCreated
dispatchOptionsMenuClosed
dump
enqueueAction
executeOps
executePostponedTransaction
findFragmentById
findFragmentByTag
getAnimationListener
getFragment
loadAnimation
makeFadeAnimation
makeOpenCloseAnimation
modifiesAlpha
modifiesAlpha
moveToState
moveToState
popBackStack
popBackStackImmediate
popBackStackState
postponePostponableTransactions
putFragment
restoreAllState
setBackStackIndex
setRetaining
shouldRunOnHWLayer
throwException
at androidx.fragment.app.FragmentManagerImpl.dispatchDestroy(Unknown Source:38)
dispatchOnFragmentViewDestroyed
moveFragmentToExpectedState
at androidx.fragment.app.FragmentManagerImpl.addAddedFragments(Unknown Source:46)
addBackStackState
addFragment
animateRemoveFragment
attachController
attachFragment
beginTransaction
completeExecute
dispatchConfigurationChanged
dispatchContextItemSelected
dispatchCreateOptionsMenu
dispatchMultiWindowModeChanged
dispatchOnFragmentActivityCreated
dispatchOnFragmentAttached
dispatchOnFragmentViewCreated
dispatchOptionsMenuClosed
dump
enqueueAction
executeOps
executePostponedTransaction
findFragmentById
findFragmentByTag
getAnimationListener
getFragment
loadAnimation
makeFadeAnimation
makeOpenCloseAnimation
modifiesAlpha
modifiesAlpha
moveToState
moveToState
popBackStack
popBackStackImmediate
popBackStackState
postponePostponableTransactions
putFragment
restoreAllState
setBackStackIndex
setRetaining
shouldRunOnHWLayer
throwException
at androidx.fragment.app.BackStackRecord.executeOps(Unknown Source:165)
at androidx.fragment.app.FragmentManagerImpl.addAddedFragments(Unknown Source:38)
addBackStackState
addFragment
animateRemoveFragment
attachController
attachFragment
beginTransaction
completeExecute
dispatchConfigurationChanged
dispatchContextItemSelected
dispatchCreateOptionsMenu
dispatchMultiWindowModeChanged
dispatchOnFragmentActivityCreated
dispatchOnFragmentAttached
dispatchOnFragmentViewCreated
dispatchOptionsMenuClosed
dump
enqueueAction
executeOps
executePostponedTransaction
findFragmentById
findFragmentByTag
getAnimationListener
getFragment
loadAnimation
makeFadeAnimation
makeOpenCloseAnimation
modifiesAlpha
modifiesAlpha
moveToState
moveToState
popBackStack
popBackStackImmediate
popBackStackState
postponePostponableTransactions
putFragment
restoreAllState
setBackStackIndex
setRetaining
shouldRunOnHWLayer
throwException
at androidx.fragment.app.FragmentManagerImpl.allocBackStackIndex(Unknown Source:114)
completeShowHideFragment
dispatchOnFragmentCreated
dispatchOnFragmentDestroyed
dispatchOnFragmentPreAttached
dispatchOptionsItemSelected
dispatchPictureInPictureModeChanged
dispatchPrepareOptionsMenu
execSingleAction
executeOpsTogether
findFragmentByWho
freeBackStackIndex
generateOpsForPendingActions
getFragments
makeRemovedFragmentsInvisible
setHWLayerAnimListenerIfAlpha
transitToStyleIndex
at androidx.fragment.app.FragmentManagerImpl.detachFragment(Unknown Source:88)
dispatchOnFragmentDetached
dispatchOnFragmentPreCreated
ensureExecReady
isStateAtLeast
isStateSaved
removeRedundantOperationsAndExecute
at androidx.fragment.app.FragmentManagerImpl.execPendingActions(Unknown Source:21)
findFragmentUnder
at androidx.fragment.app.FragmentManagerImpl.dispatchOnFragmentResumed(Unknown Source:9)
dispatchStateChange
hideFragment
popBackStackImmediate
at androidx.fragment.app.FragmentManagerImpl.dispatchActivityCreated(Unknown Source:6)
dispatchOnFragmentStarted
makeActive
at androidx.fragment.app.FragmentController.attachHost(Unknown Source:4)
createController
dispatchActivityCreated
dispatchConfigurationChanged
dispatchContextItemSelected
dispatchCreateOptionsMenu
dispatchMultiWindowModeChanged
dispatchOptionsMenuClosed
findFragmentByWho
onCreateView
restoreAllState
at androidx.fragment.app.FragmentActivity.onStart(Unknown Source:15)
at androidx.appcompat.app.AppCompatActivity.onStart(Unknown Source:0)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1392)
at android.app.Activity.performStart(Activity.java:7252)
at android.app.ActivityThread.handleStartActivity(ActivityThread.java:2970)
at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:180)
at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:165)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:142)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:70)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1831)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:201)
at android.app.ActivityThread.main(ActivityThread.java:6806)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:873)
三、源代码
在调用ColorEntry#getIcon()时首先判断调用对象不为null。但依然发生NullPointerException异常。
public class ColorEntity extends BaseEntitySet<ColorEntity, ColorEntry> {
public static final ColorEntity TRANSPARENT = new ColorEntity(null, null);
private static ColorEntity instance;
int icon = Color.TRANSPARENT;
int color = 0xff474747;
int check = 0xff606060;
int background = 0xffe0e0e0;
ColorEntity(@NonNull Context context, @Nullable ColorEntry entry) {
this(context, entry, null);
}
ColorEntity(@NonNull Context context, @Nullable ColorEntry entry, @Nullable List<ColorEntity> list) {
super(context, entry, list);
if (entry != null) {
this.icon = ColorUtils.parse(entry.getIcon());
this.color = ColorUtils.parse(entry.getColor());
this.check = ColorUtils.parse(entry.getCheck());
this.background = ColorUtils.parse(entry.getBackground());
}
}
}
四、解决方案
不要混淆数据类。
经过几天测试，发现此方法可行。
-keep public class * extends club.andnext.base.BaseEntry
五、参考文章
- Android studio 混淆打包安装后报错NullPointerException int java.util.List.size()
- Android studio 混淆打包安装后报错NullPointerException int java.util.List.size()
六、Finally
～一重山～两重山～山远天高烟水寒～相思枫叶丹～