我在Playstore中有一个应用程序,我收到一些崩溃报告,大部分崩溃报告都包含IllegalArgumentException异常,这个异常并没有指向代码中的任何一行.我无法复制这个问题.任何人都可以帮我解决这个问题.
java.lang.IllegalArgumentException:
at android.support.v4.app.FragmentManagerImpl.moveToState (FragmentManager.java:1102)
at android.support.v4.app.FragmentManagerImpl.moveToState (FragmentManager.java:1290)
at android.support.v4.app.BackStackRecord.popFromBackStack (BackStackRecord.java:1038)
at android.support.v4.app.FragmentManagerImpl.popBackStackState (FragmentManager.java:1737)
at android.support.v4.app.FragmentManagerImpl.popBackStackImmediate (FragmentManager.java:605)
at android.support.v4.app.FragmentActivity.onBackPressed (FragmentActivity.java:179)
at android.app.Activity.onKeyUp (Activity.java:2755)
at android.view.KeyEvent.dispatch (KeyEvent.java:2712)
at android.app.Activity.dispatchKeyEvent (Activity.java:3056)
at android.support.v7.app.AppCompatActivity.dispatchKeyEvent (AppCompatActivity.java:543)
at android.support.v7.view.WindowCallbackWrapper.dispatchKeyEvent (WindowCallbackWrapper.java:53)
at android.support.v7.app.AppCompatDelegateImplBase$AppCompatWindowCallbackBase.dispatchKeyEvent (AppCompatDelegateImplBase.java:315)
at com.android.internal.policy.DecorView.dispatchKeyEvent (DecorView.java:319)
at android.view.ViewRootImpl$ViewPostImeInputStage.processKeyEvent (ViewRootImpl.java:4378)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess (ViewRootImpl.java:4349)
at android.view.ViewRootImpl$InputStage.deliver (ViewRootImpl.java:3893)
at android.view.ViewRootImpl$InputStage.onDeliverToNext (ViewRootImpl.java:3946)
at android.view.ViewRootImpl$InputStage.forward (ViewRootImpl.java:3912)
at android.view.ViewRootImpl$AsyncInputStage.forward (ViewRootImpl.java:4039)
at android.view.ViewRootImpl$InputStage.apply (ViewRootImpl.java:3920)
at android.view.ViewRootImpl$AsyncInputStage.apply (ViewRootImpl.java:4096)
at android.view.ViewRootImpl$InputStage.deliver (ViewRootImpl.java:3893)
at android.view.ViewRootImpl$InputStage.onDeliverToNext (ViewRootImpl.java:3946)
at android.view.ViewRootImpl$InputStage.forward (ViewRootImpl.java:3912)
at android.view.ViewRootImpl$InputStage.apply (ViewRootImpl.java:3920)
at …如果它是空的char/white空格,则它们都返回true,否则返回false.我的问题是为什么java有这两种方法,因为它们正在做同样的事情