java - Cardview 内部片段

Question

我试图将卡片放入其中一个片段中，但出现此错误:没有适用于“(com.sample.app.FragmentOne)”的构造函数。顺便说一下，我使用的是 AIDE IDE。

错误是这里的(this):

mLayoutManager = new LinearLayoutManager(this);

FragmentOne.java

package com.sample.app;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import android.content.Intent;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.Menu;
import android.view.MenuItem;

import com.sample.app.MainActivity;
import com.sample.app.R;

public class FragmentOne extends Fragment {

RecyclerView mRecyclerView;
RecyclerView.LayoutManager mLayoutManager;
RecyclerView.Adapter mAdapter;


@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    // Inflate the layout for this fragment
    final View view = inflater.inflate(R.layout.fragment_one, container, false);

    ((MainActivity) getActivity()).getSupportActionBar().setTitle("Fragment One");

    mRecyclerView = (RecyclerView) view.findViewById(R.id.recycler_view);
    mRecyclerView.setHasFixedSize(true);

    mLayoutManager = new LinearLayoutManager(this);
    mRecyclerView.setLayoutManager(mLayoutManager);

    mAdapter = new CardAdapter();
    mRecyclerView.setAdapter(mAdapter);

    return view;
}

}

请帮助我，提前致谢。

Answer 1

我改变了这个

mLayoutManager = new LinearLayoutManager(this); 

进入

mLayoutManager = new LinearLayoutManager(getActivity());