NoClassDefFoundError - Android 2.3.X [英] NoClassDefFoundError - Android 2.3.X
本文介绍了NoClassDefFoundError - Android 2.3.X的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我在类中定义了一个任务.致命异常NoClassDefFoundError"发生在以下行
I have a Task defined in a class. Fatal exception "NoClassDefFoundError" is happening on following line
MyCuteTask myTask = new MyCuteTask(equations)
这是代码
public class MyClass {
public void run() {
MyCuteTask myTask = new MyCuteTask(equations)
}
protected class MyCuteTask extends AsyncTask<String, Integer, String> {
...
}
}
最近，我收到了奇怪的错误报告.当我实例化我的任务时，Android 会抛出异常.我只有 android 2.3.X 有这个错误.
Recently, I have strange bug reports. Android throw an exception when I instantiate my task. I have this bug with android 2.3.X only.
你们有没有遇到同样的错误?
Do any of you got the same bug?
这是堆栈跟踪
java.lang.NoClassDefFoundError: com.mathssolver.main.k
at com.mathssolver.main.Logic.updateGraph(Logic.java:310)
at com.mathssolver.main.Graph.update(Graph.java:249)
at com.mathssolver.main.MathGraphFragment.plotFunction(MathGraphFragment.java:236)
at com.mathssolver.main.MathGraphFragment.plot(MathGraphFragment.java:158)
at com.mathssolver.main.MathGraphFragment.showExample(MathGraphFragment.java:141)
at com.mathssolver.main.MathGraphFragment.onStart(MathGraphFragment.java:109)
at android.support.v4.app.Fragment.performStart(Fragment.java:1810)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:977)
at android.support.v4.app.FragmentManagerImpl.performPendingDeferredStart(FragmentManager.java:842)
at android.support.v4.app.FragmentManagerImpl.startPendingDeferredFragments(FragmentManager.java:1150)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1506)
at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:486)
at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1073)
at android.support.v4.view.ViewPager.populate(ViewPager.java:919)
at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1441)
at android.view.View.measure(View.java:8323)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:581)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:365)
at android.view.View.measure(View.java:8323)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
at android.view.View.measure(View.java:8323)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.support.v7.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:453)
at android.view.View.measure(View.java:8323)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
at android.view.View.measure(View.java:8323)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
at android.view.View.measure(View.java:8323)
at android.view.ViewRoot.performTraversals(ViewRoot.java:842)
at android.view.ViewRoot.handleMessage(ViewRoot.java:1862)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3806)
at java.lang.reflect.Method.invokeNative(Method.java)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
at dalvik.system.NativeStart.main(NativeStart.java)
Caused by: java.lang.ClassNotFoundException: com.mathssolver.main.k in loader dalvik.system.PathClassLoader[/data/app/com.shakti.mathssolver-1.apk]
at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at com.mathssolver.main.Logic.updateGraph(Logic.java:310)
at com.mathssolver.main.Graph.update(Graph.java:249)
at com.mathssolver.main.MathGraphFragment.plotFunction(MathGraphFragment.java:236)
at com.mathssolver.main.MathGraphFragment.plot(MathGraphFragment.java:158)
at com.mathssolver.main.MathGraphFragment.showExample(MathGraphFragment.java:141)
at com.mathssolver.main.MathGraphFragment.onStart(MathGraphFragment.java:109)
at android.support.v4.app.Fragment.performStart(Fragment.java:1810)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:977)
at android.support.v4.app.FragmentManagerImpl.performPendingDeferredStart(FragmentManager.java:842)
at android.support.v4.app.FragmentManagerImpl.startPendingDeferredFragments(FragmentManager.java:1150)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1506)
at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:486)
at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
at android.support.v4.view.ViewPager.populate(ViewPager.java:1073)
at android.support.v4.view.ViewPager.populate(ViewPager.java:919)
at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1441)
at android.view.View.measure(View.java:8323)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:581)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:365)
at android.view.View.measure(View.java:8323)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
at android.view.View.measure(View.java:8323)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.support.v7.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:453)
at android.view.View.measure(View.java:8323)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
at android.view.View.measure(View.java:8323)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
at android.view.View.measure(View.java:8323)
at android.view.ViewRoot.performTraversals(ViewRoot.java:842)
at android.view.ViewRoot.handleMessage(ViewRoot.java:1862)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3806)
at java.lang.reflect.Method.invokeNative(Method.java)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
at dalvik.system.NativeStart.main(NativeStart.java)
com.mathssolver.main.Logic.updateGraph(Logic.java:310) 处的行是
Line at com.mathssolver.main.Logic.updateGraph(Logic.java:310) is
MyCuteTask myTask = new MyCuteTask(equations)
推荐答案
这是一个 google play 服务问题.(https://code.google.com/p/android/issues/详细信息?id=81083)
Its an google play services issue. (https://code.google.com/p/android/issues/detail?id=81083)
在 Google 修复之前避免此崩溃的解决方法:
Workaround to avoid this crash till Google fixes it:
将以下内容添加到您的 Application#onCreate() 方法中
Add following into your Application#onCreate() method
try {
Class.forName("android.os.AsyncTask");
}
catch(Throwable ignore) {
// ignored
}
注意它的 Application#onCreate() 而不是 Activity#onCreate()
Note its Application#onCreate() and not Activity#onCreate()
更新:我可以验证上述更改是否为我修复了这些崩溃.
Update: I can verify that above changes fixed these crashes for me.
这篇关于NoClassDefFoundError - Android 2.3.X的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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