小编vol*_*res的帖子

我正在尝试从 backstack 中检索片段。它正在被检索，但问题是在按下后退按钮时，oncreate 视图和当前片段的后续生命周期方法也被调用。这是我将片段放入 backstack 的代码：

fragment=new FileTrackingFragment();
bundle=new Bundle();
bundle.putString("name","Dak Monitoring");
bundle.putInt("num",2);
fragment.setArguments(bundle);
ft.replace(R.id.parent, fragment, fragment.getClass().getName());
ft.addToBackStack(fragment.getClass().getName());
ft.commit();
break;

这是片段的代码：

package com.example.rajvirsingh.epunjaboffice.DakMonitoring;

import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.design.widget.Snackbar;
import android.support.percent.PercentRelativeLayout;
import android.support.v4.app.Fragment;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;

import com.example.rajvirsingh.epunjaboffice.FileTracking.HistoryAdapter;
import com.example.rajvirsingh.epunjaboffice.MainActivity;
import com.example.rajvirsingh.epunjaboffice.R;
import com.example.rajvirsingh.epunjaboffice.Utility.Constants;
import com.example.rajvirsingh.epunjaboffice.Utility.SessionManager;
import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.RequestParams;
import com.loopj.android.http.TextHttpResponseHandler;

import org.json.JSONArray;

import java.util.ArrayList;

import …