比如同一个activity的一个fragment_01通过一个button将edittext中的值传到另一个frogment_02，02有一个textview显示接受的值，还有一个button想点击后返回fragment_01,可不可以在fragment_02里面用replace替换回fragment_01？

我这么写运行崩溃，求解

package imooc_demo.fragment_value;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        getSupportFragmentManager().beginTransaction().add(R.id.activity_main,new FragmentValue(),"value").commit();
    }

}

package imooc_demo.fragment_value;

import android.os.Bundle;
import android.support.annotation.Nullable;
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.EditText;

import java.util.zip.Inflater;

public class FragmentValue extends Fragment {

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
       View view= inflater.inflate(R.layout.fragment_value,container,false);
        final EditText editText= (EditText) view.findViewById(R.id.et);
        Button button=(Button) view.findViewById(R.id.bt_send);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                FragmentTake fragmentTake=new FragmentTake();
                Bundle bundle=new Bundle();
                bundle.putString("arg",editText.getText().toString());
                fragmentTake.setArguments(bundle);
                getFragmentManager().beginTransaction().replace(R.id.activity_main,fragmentTake,"take").commit();
            }
        });
        return view;
    }
}

package imooc_demo.fragment_value;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;


public class FragmentTake extends Fragment {
    @Nullable

    FragmentManager fragmentManager;
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view=inflater.inflate(R.layout.fragment_take,container,false);
        TextView textView= (TextView) view.findViewById(R.id.tv);
        textView.setText(getArguments().getString("arg"));
        return view;
    }
    public void back(View view){
        FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();

        fragmentTransaction.replace(R.id.activity_main,new FragmentValue());


        fragmentTransaction.commit();
    }
}