android glide com.networkbench.agent.impl.instrumentation.NBSTraceEngine

         在使用Glide的框架的时候，碰到一个奇葩的问题，报错信息如下：

Process: com.juwang.androidglide, PID: 22694         java.lang.NoClassDefFoundError: Failed resolution of: Lcom/networkbench/agent/impl/instrumentation/NBSTraceEngine;              at com.bumptech.glide.manager.SupportRequestManagerFragment.onCreate(SupportRequestManagerFragment.java)              at android.support.v4.app.Fragment.performCreate(Fragment.java:2180)              at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1244)              at android.support.v4.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1528)              at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1595)              at android.support.v4.app.BackStackRecord.executeOps(BackStackRecord.java:758)              at android.support.v4.app.FragmentManagerImpl.executeOps(FragmentManager.java:2363)              at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2149)              at android.support.v4.app.FragmentManagerImpl.optimizeAndExecuteOps(FragmentManager.java:2103)              at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2013)              at android.support.v4.app.FragmentController.execPendingActions(FragmentController.java:388)              at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:607)              at android.support.v7.app.AppCompatActivity.onStart(AppCompatActivity.java:178)              at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1236)              at android.app.Activity.performStart(Activity.java:6055)              at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2305)              at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2404)              at android.app.ActivityThread.access$800(ActivityThread.java:154)              at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1315)              at android.os.Handler.dispatchMessage(Handler.java:102)              at android.os.Looper.loop(Looper.java:135)              at android.app.ActivityThread.main(ActivityThread.java:5290)              at java.lang.reflect.Method.invoke(Native Method)              at java.lang.reflect.Method.invoke(Method.java:372)              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:911)              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:706)      Caused by: java.lang.ClassNotFoundException: Didn't find class "com.networkbench.agent.impl.instrumentation.NBSTraceEngine" on path: DexPathList[[zip file "/data/app/com.juwang.androidglide-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]              at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)              at java.lang.ClassLoader.loadClass(ClassLoader.java:511)              at java.lang.ClassLoader.loadClass(ClassLoader.java:469)              at com.bumptech.glide.manager.SupportRequestManagerFragment.onCreate(SupportRequestManagerFragment.java)               at android.support.v4.app.Fragment.performCreate(Fragment.java:2180)               at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1244)               at android.support.v4.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1528)               at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1595)               at android.support.v4.app.BackStackRecord.executeOps(BackStackRecord.java:758)               at android.support.v4.app.FragmentManagerImpl.executeOps(FragmentManager.java:2363)               at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2149)               at android.support.v4.app.FragmentManagerImpl.optimizeAndExecuteOps(FragmentManager.java:2103)               at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2013)               at android.support.v4.app.FragmentController.execPendingActions(FragmentController.java:388)               at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:607)               at android.support.v7.app.AppCompatActivity.onStart(AppCompatActivity.java:178)               at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1236)               at android.app.Activity.performStart(Activity.java:6055)               at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2305)               at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2404)               at android.app.ActivityThread.access$800(ActivityThread.java:154)               at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1315)               at android.os.Handler.dispatchMessage(Handler.java:102)               at android.os.Looper.loop(Looper.java:135)               at android.app.ActivityThread.main(ActivityThread.java:5290)               at java.lang.reflect.Method.invoke(Native Method)               at java.lang.reflect.Method.invoke(Method.java:372)               at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:911)               at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:706)                   Suppressed: java.lang.ClassNotFoundException: com.networkbench.agent.impl.instrumentation.NBSTraceEngine              at java.lang.Class.classForName(Native Method)              at java.lang.BootClassLoader.findClass(ClassLoader.java:781)              at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)              at java.lang.ClassLoader.loadClass(ClassLoader.java:504)                               ... 27 more        Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available

经过排查才知道，原来是引用的Glide的版本有问题。出现这个问题是因为我引用的Glide的版本是3.7.0，把Glide的版本降低点就不会出现这种问题了。至于为什么3.7.0会出现这样的问题，我还没有搞懂，欢迎明白的同学在下面留言，不胜感激