android.support.v4.app.FragmentManager#popBackStackImmediate()导致NullPointerException [英] android.support.v4.app.FragmentManager#popBackStackImmediate() results in a NullPointerException

问题描述

有时执行android.support.v4.app.FragmentManager#popBackStackImmediate()会导致下一个异常:

Sometimes executing android.support.v4.app.FragmentManager#popBackStackImmediate() results in the next exception:

> Fatal Exception: java.lang.NullPointerException: Attempt to invoke
> virtual method 'android.os.Handler
> android.support.v4.app.FragmentHostCallback.getHandler()' on a null
> object reference
>        at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1588)
>        at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:570)
>        at android.support.v4.app.FragmentManagerImpl.popBackStackImmediate(FragmentManager.java:585)

这是我的代码:

        FragmentManager manager = getSupportFragmentManager();
        FragmentTransaction fragmentTransaction = manager.beginTransaction();
        manager.popBackStackImmediate();
        fragmentTransaction.commitAllowingStateLoss();

有人知道这可能是什么原因吗?

Does anyone knows what could be the reason for that?

推荐答案

我从编译'com.android.support:support-v4:23.1.1'移回了编译'com.android.support:support-v4:23.1.0'，现在不再发生了. 综上所述，support-v4:23.1.1.

I moved back from compile 'com.android.support:support-v4:23.1.1' to compile 'com.android.support:support-v4:23.1.0' and now it doesn't happen any more. So to conclude, it seems like there is a bug with support-v4:23.1.1.

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