Android DialogFragment生命周期show->onCreateView

DialogFragment.show显示的生命周期是：先执行show()方法，再执行onCreateView()方法，若有如下操作：

mActivityDialogFragment.show(((FragmentActivity) mActivity).getSupportFragmentManager(), "dialog");
mActivityDialogFragment.setDialogBackground(url);

@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    NLog.i("yezhou", "ActivityDialogFragment.onCreateView");
    return inflater.inflate(R.layout.layout_activity_dialog, container);
}

@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
    NLog.i("yezhou", "ActivityDialogFragment.onViewCreated");
    initView(view);
    GlideImageLoader.loadViewBackground(getContext(), bgUrl, mLayoutActivityDialog);
    super.onViewCreated(view, savedInstanceState);
}

public void setDialogBackground(String url) {
    NLog.i("yezhou", "ActivityDialogFragment.setDialogBackground");
    //GlideImageLoader.loadViewBackground(getContext(), bgUrl, mLayoutActivityDialog);  //mLayoutActivityDialog空指针异常
    bgUrl = url;
}

@Override
public void show(FragmentManager manager, String tag) {
    NLog.i("yezhou", "ActivityDialogFragment.show");
    if (Build.VERSION.SDK_INT > Build.VERSION_CODES.JELLY_BEAN) {
        if (manager.isDestroyed())
            return;
    }
    try {
        super.show(manager, tag);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

输出日志

ActivityDialogFragment.show
ActivityDialogFragment.setDialogBackground
ActivityDialogFragment.onCreateView
ActivityDialogFragment.onViewCreated