大佬教程收集整理的这篇文章主要介绍了android – 崩溃删除片段，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
java.lang.NullPointerException: Attempt to read from field 'int android.support.v4.app.Fragment.mContainerId' on a null object reference at android.support.v4.app.FragmentTransition.addToFirstInLastOut(FragmentTransition.java:1012) at android.support.v4.app.FragmentTransition.calculateFragments(FragmentTransition.java:971) at android.support.v4.app.FragmentTransition.startTransitions(FragmentTransition.java:95) at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2143) at android.support.v4.app.FragmentManagerImpl.optimizeAndExecuteOps(FragmentManager.java:2098) at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2008) at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:710) at android.os.Handler.handleCallback(Handler.java:751) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:154) at android.app.ActivityThread.main(ActivityThread.java:6077) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
它只发生在我的api 24 Pixel C上.调试模式无法帮助我找出它的位置.当我删除一个删除片段的按钮时会发生这种情况,但代码的“片段删除”部分会被正确执行,执行我的OnClickListener后会发生一些事情.
我删除了交易动画并遇到了同样的崩溃.
以前有人经历过吗？
谢谢
之前：
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); courseLauncherFragment = CourseLauncherFragment.newInstance(courseId); fragmentTransaction.replace(R.id.launcher_finish_frame_layout,courseLauncherFragment); fragmentTransaction.commit(); getSupportFragmentManager().executePendingTransactions();
然后删除它：
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); fragmentTransaction.setCustomAnimations(R.anim.slide_in_left,R.anim.slide_out_left); fragmentTransaction.remove(courseLauncherFragment); fragmentTransaction.commit();
现在 ：
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); fragmentTransaction.replace(R.id.launcher_finish_frame_layout,CourseLauncherFragment.newInstance(courseId),LAUNCHER_FRAGMENT_TAG); fragmentTransaction.commit(); getSupportFragmentManager().executePendingTransactions();
然后 ：
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); fragmentTransaction.setCustomAnimations(R.anim.slide_in_left,R.anim.slide_out_left); Fragment fragment = fragmentManager.findFragmentByTag(LAUNCHER_FRAGMENT_TAG); fragmentTransaction.remove(fragment); fragmentTransaction.commit();
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