fragment异常android.app.Fragment$InstantiationException: Unable to instantiate fragment

本文记录了一次遇到的Android应用中Fragment构造异常的问题,异常信息提示无法实例化NewsFragmentTitles。通过查找资料,找到了一个详细的解决方案,并附上了参考资料链接。

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之前有遇到过一个异常,没在意,后期又不显示了,最近又出来了,后来百度了一下,找到一个不错的帖子。


构造函数异常:

android.app.Fragment$InstantiationException: Unable to instantiate fragment com.jsbd.news.NewsFragmentTitles: make sure class name exists, is public, and has an empty constructor that is public


参考处理方案:

http://blog.youkuaiyun.com/u011511577/article/details/51615066


想转载收藏的,留言给作者,但未回复,只能发个链接了。原因、对策我就不说了, 进入看看吧,解析很有条理。





E FATAL EXCEPTION: main Process: com.example.kucun2, PID: 27907 androidx.fragment.app.Fragment$InstantiationException: Unable to instantiate fragment com.example.kucun2.fragments.OrderDisplayFragment: make sure class name exists at androidx.fragment.app.FragmentFactory.loadFragmentClass(FragmentFactory.java:97) at androidx.fragment.app.Fragment.instantiate(Fragment.java:670) at androidx.fragment.app.FragmentContainer.instantiate(FragmentContainer.java:57) at androidx.fragment.app.FragmentManager$3.instantiate(FragmentManager.java:525) at androidx.navigation.fragment.FragmentNavigator.createFragmentTransaction(FragmentNavigator.kt:394) at androidx.navigation.fragment.FragmentNavigator.navigate(FragmentNavigator.kt:329) at androidx.navigation.fragment.FragmentNavigator.navigate(FragmentNavigator.kt:308) at androidx.navigation.NavController.navigateInternal(NavController.kt:265) at androidx.navigation.NavController.navigate(NavController.kt:1832) at androidx.navigation.NavController.navigate(NavController.kt:1668) at androidx.navigation.NavController.navigate(NavController.kt:1595) at androidx.navigation.ui.NavigationUI.onNavDestinationSelected(NavigationUI.kt:96) at androidx.navigation.ui.NavigationUI.setupWithNavController$lambda$3(NavigationUI.kt:476) at androidx.navigation.ui.NavigationUI.$r8$lambda$BjnX4GnGzOVkMyDjMUkrTEr9dSk(Unknown Source:0) at androidx.navigation.ui.NavigationUI$$ExternalSyntheticLambda5.onNavigationItemSelected(D8$$SyntheticClass:0) at com.google.android.material.navigation.NavigationView$2.onMenuItemSelected(NavigationView.java:331) at androidx.appcompat.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:836) at androidx.appcompat.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:159) at androidx.appcompat.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:987) at com.google.android.material.internal.NavigationMenuPresenter$1.onClick(NavigationMenuPresenter.java:506) at android.view.View.performClick(View.java:8166) at android.view.View.perfo
最新发布
06-07
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