DialogFragment调用show()报Can not perform this action after onSaveInstanceState的解决办法

参考文章

• 使用自定义DialogFragment出现IllegalStateException: Can not perform this action after onSaveInstanceState异常
• Fragment Or DialogFragment Can not perform this action after onSaveInstanceState

解决办法一

在PromptDialogFragment中重写show()和dismiss()方法

@Override
public void show(FragmentManager manager, String tag) {
    //super.show(manager, tag);
    try {
        Class c = Class.forName("androidx.fragment.app.DialogFragment");
        Field dismissed = c.getDeclaredField("mDismissed");
        dismissed.setAccessible(true);
        dismissed.set(obj, false);
        Field shownByMe = c.getDeclaredField("mShownByMe");
        shownByMe.setAccessible(true);
        shownByMe.set(obj, false);
    } catch (Exception e) {
        NLog.e(Constants.TAG, Log.getStackTraceString(e));
    }
    FragmentTransaction ft = manager.beginTransaction();
    ft.add(this, tag);
    ft.commitAllowingStateLoss();
}

@Override
public void dismiss() {
    //super.dismiss();
    dismissAllowingStateLoss();
}

解决方法二

（1）自建包androidx.fragment.app，并在包下新建类MyDialogFragment继承DialogFragment

package androidx.fragment.app;

public class MyDialogFragment extends DialogFragment {

    public boolean getDismissed() {
        return mDismissed;
    }

    public void setDismissed(boolean dismissed) {
        this.mDismissed = dismissed;
    }

    public boolean getShownByMe() {
        return mShownByMe;
    }

    public void setShownByMe(boolean shownByMe) {
        this.mShownByMe = shownByMe;
    }
}

（2）在PromptDialogFragment中重写show()和dismiss()方法

public class LoginPromptDialogFragment extends MyDialogFragment

    ...

    @Override
    public void show(FragmentManager manager, String tag) {
        setDismissed(false);
        setShownByMe(false);
        FragmentTransaction ft = manager.beginTransaction();
        ft.add(this, tag);
        ft.commitAllowingStateLoss();
    }

    @Override
    public void dismiss() {
        //super.dismiss();
        dismissAllowingStateLoss();
    }
}