android - 为什么 Android O 失败并显示 “does not belong to this FragmentManager!”

Question

我已将我的应用程序迁移到 Android Studio 3 中的 Android O

在 Android O 模拟器上运行我所有的 dialogFragments 现在都失败了:-

java.lang.IllegalStateException: Fragment CustomAlertDialogFragment{41cfde98 #0 dialog} declared target fragment LayoutOne{41e7f970 #0 id=0x7f0d0207 android:switcher:2131558919:0} that does not belong to this FragmentManager!

我在以下代码中遇到错误:-

 Modules.showDialog(bundledialog, DIALOG_FOUND, this, getChildFragmentManager());

public static void showDialog(Bundle bundle, int type, Fragment fragment, FragmentManager manager)
{
    CustomAlertDialogFragment diag=new CustomAlertDialogFragment();
    diag.setTargetFragment(fragment, type);
    diag.setArguments(bundle);
    try {
        diag.show(manager, "dialog");
    } catch (Exception e) {
        e.printStackTrace();
    }

}

Answer 1

当您显示另一个 fragment 中的一个 fragment 并将其用作目标时，就会发生这种情况。作为解决方法，您可以使用:

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        getActivity().getFragmentManager().beginTransaction().add(dialogFrag, "dialog").commit();
} else {
        getChildFragmentManager().beginTransaction().add(dialogFrag, "dialog").commit();
}