ビューポケットベルのフラグメント間でデータを渡す

Question

ビューポケットベルのフラグメント間でデータを渡す際に助けが必要です！ Fragments内のバンドルとしてデータを渡そうとしました。 Fragment.getInstance（）メソッド内で、他のFragment.getArguments（）からデータを取得しようとしました。

活動コード

package com.northerly.bumpr; 

import android.support.v4.app.Fragment; 
import android.support.v4.app.FragmentManager; 
import android.support.v4.app.FragmentStatePagerAdapter; 
import android.support.v4.view.PagerAdapter; 
import android.support.v4.view.ViewPager; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 

import android.widget.TextView; 


import com.northerly.bumpr.Fragment.EnterOtp; 

import com.northerly.bumpr.Fragment.MobileNumber; 
import com.northerly.bumpr.utils.NonSwipeableViewPager; 


public class LoginActivity extends AppCompatActivity { 

public static NonSwipeableViewPager mPager; 
PagerAdapter mPagerAdapter; 
private static final int NUM_PAGES = 2; 
public static Bundle myBundle = new Bundle(); 
public static TextView tv; 


@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_login); 


    mPager = (NonSwipeableViewPager) findViewById(R.id.pager); 

    mPagerAdapter = new ScreenSlidePagerAdapter(getSupportFragmentManager()); 
    mPager.setAdapter(mPagerAdapter); 
    mPager.setOffscreenPageLimit(0); 

    mPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() { 
     @Override 
     public void onPageSelected(int position) { 
      // When changing pages, reset the action bar actions since they are dependent 
      // on which page is currently active. An alternative approach is to have each 
      // fragment expose actions itself (rather than the activity exposing actions), 
      // but for simplicity, the activity provides the actions in this sample. 
      invalidateOptionsMenu(); 
     } 
    }); 





} 

private class ScreenSlidePagerAdapter extends FragmentStatePagerAdapter { 
    public ScreenSlidePagerAdapter(FragmentManager fm) { 
     super(fm); 
    } 



    @Override 
    public Fragment getItem(int position) { 
     switch (position) { 

      case 0: 
       return MobileNumber.newInstance(); 

      case 1: 
       return EnterOtp.newInstance(); 

     } 
     return MobileNumber.newInstance(); 
    } 

    @Override 
    public int getCount() { 
     return NUM_PAGES; 
    } 
} 






} 

断片コード：

package com.northerly.bumpr.Fragment; 

import android.app.Dialog; 
import android.content.Intent; 
import android.graphics.drawable.ColorDrawable; 
import android.net.Uri; 
import android.net.nsd.NsdManager; 
import android.os.AsyncTask; 
import android.os.Bundle; 
import android.os.CountDownTimer; 
import android.support.annotation.IntRange; 
import android.support.design.widget.Snackbar;  
import android.support.v4.app.Fragment; 
import android.support.v4.app.FragmentActivity; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.view.Window; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.FrameLayout; 
import android.widget.Toast; 

import com.northerly.bumpr.HomeActivity; 
import com.northerly.bumpr.LoginActivity; 
import com.northerly.bumpr.R; 
import com.northerly.bumpr.common.ConnectionDetector; 
import com.northerly.bumpr.common.OfferInfoChild; 
import com.northerly.bumpr.common.OfferInfoGroup; 
import com.northerly.bumpr.utils.DBHandler; 
import com.northerly.bumpr.utils.GarageGetterSetter; 
import com.northerly.bumpr.utils.GlobalData; 
import com.northerly.bumpr.utils.PreferenceConnector; 
import com.northerly.bumpr.utils.Webservice; 

import org.json.JSONArray; 
import org.json.JSONObject; 
import org.json.JSONStringer; 

import java.lang.ref.WeakReference; 
import java.util.ArrayList; 

import static android.R.id.list; 


public class MobileNumber extends Fragment { 

Button cont; 
EditText ph_no; 
ConnectionDetector detector; 
FrameLayout mobil_num_lay; 
public static String mobile; 

private OnFragmentInteractionListener mListener; 

public MobileNumber() { 

} 

public static MobileNumber newInstance() { 
    MobileNumber fragment = new MobileNumber(); 
    return fragment; 
} 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
} 

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

    ViewGroup rootView = (ViewGroup)   inflater.inflate(R.layout.fragment_mobile_number, container, false); 

    cont = (Button) rootView.findViewById(R.id.cont); 
    ph_no = (EditText) rootView.findViewById(R.id.s_ph); 

    mobil_num_lay=(FrameLayout)rootView.findViewById(R.id.mobile_number_lay); 

detector=new ConnectionDetector(getActivity()); 
    cont.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 

      if (ph_no.getText().toString().length()!=0 && ph_no.getText().toString().length()!=10) 
      { 
       final Snackbar snackbar = Snackbar.make(mobil_num_lay,  "Please Enter a valid Mobile Number", Snackbar.LENGTH_SHORT); 

       snackbar.setAction("Dismiss", new View.OnClickListener() { 
        @Override 
        public void onClick(View view) { 
         snackbar.dismiss(); 
        } 
       }); 

       // Changing message text color 
       snackbar.setActionTextColor(getResources().getColor(R.color.colorAccent)); 
       snackbar.show(); 



      } else { 
       mobile="+91"+ph_no.getText().toString(); 
       if (detector.isConnectingToInternet()) { 
        new AsyncLogin(getActivity()).execute(); 
       } else { 
        Toast.makeText(getActivity(),  getResources().getString(R.string.internet_connection_exception), 
          Toast.LENGTH_SHORT).show(); 
       } 
      } 

//    GoSignUp.myBundle.putString("Timer","on"); 



     } 
    }); 

    return rootView; 
} 

public interface OnFragmentInteractionListener { 

    void onFragmentInteraction(Uri uri); 
} 

public void timerOn() { 

    new CountDownTimer(30000, 1000) { 

     public void onTick(long millisUntilFinished) { 

      LoginActivity.tv.setText("0:" + millisUntilFinished/1000); 

     } 

     public void onFinish() { 

       LoginActivity.tv.setText(getResources().getString(R.string.resend_otp)); 

     } 
    }.start(); 
} 

public class AsyncLogin extends AsyncTask<String, String, Void> { 
    String response; 
    Dialog dialog; 
    private final WeakReference<FragmentActivity> mainActivityWeakRef; 

    public AsyncLogin(FragmentActivity mainActivity) { 
     super(); 
     this.mainActivityWeakRef = new WeakReference<>(mainActivity); 
    } 

    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     if (mainActivityWeakRef.get() != null && !mainActivityWeakRef.get().isFinishing()) { 
      dialog = new Dialog(getActivity()); 
      dialog.requestWindowFeature(Window.FEATURE_NO_TITLE); 
      dialog.setContentView(R.layout.custom_dialog); 
      dialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT)); 
      dialog.show(); 
     } 
    } 

    protected Void doInBackground(String... args) { 
     try { 
      JSONStringer userJson = null; 
//    userJson = new JSONStringer().object().key(GlobalData.user_id) 
//      .value(PreferenceConnector.readString(getActivity(), PreferenceConnector.USER_ID, "")) 
//      .endObject(); 

      userJson = new JSONStringer().object().key(GlobalData.username) 
        .value(mobile) 
        .endObject(); 

      String url = GlobalData.serverName + GlobalData.user_status; 

      response = Webservice.PostDataAlter(url, userJson); 

     } catch (Exception e) { 
      e.getMessage(); 
     } 
     return null; 
    } 
    @Override 
    protected void onPostExecute(Void result) { 
     //Below code is added to avoid Fragment not attached to activity error 
     if(isAdded()){ 
      getResources().getString(R.string.app_name); 
     } 

     Log.d((mainActivityWeakRef.get() != null) + "", "onPostexecute"); 
     if (mainActivityWeakRef.get() != null && !mainActivityWeakRef.get().isFinishing()) { 
      if (dialog.isShowing()) { 
       /* Dismiss the progress dialog after sharing */ 
       dialog.dismiss(); 
      } 
      ArrayList<OfferInfoGroup> GrpList = new ArrayList<OfferInfoGroup>(); 
      try { 
       System.out.println("response "+ response.toString()); 
       JSONObject jsonobj = new JSONObject(response); 
       String UserDetails = jsonobj.getString(getResources().getString(R.string.response_status)); 

       System.out.println("Hi"+UserDetails); 


       if (UserDetails.equals(getResources().getString(R.string.response_register))) 
       { 

//      String  otp_verify=jsonobj.getString(getResources().getString(R.string.verify_otp)); 
//       PreferenceConnector.writeString(getActivity(),PreferenceConnector.OTP_VERIFY,otp_verify); 

        String result1 = jsonobj.getString(getResources().getString(R.string.response_results)); 
        JSONArray arr = new JSONArray(result1); 
        String result2 = jsonobj.getString(getResources().getString(R.string.response_results2)); 
         JSONArray arr2 = new JSONArray(result2); 
        String result3 = jsonobj.getString(getResources().getString(R.string.response_results3)); 
        JSONArray arr3 = new JSONArray(result3); 

        System.out.println("Hello"+arr); 
        for (int i=0;i<arr.length();i++) 
        { 
         String userid = arr.getJSONObject(i).getString(GlobalData.reg_id); 
         PreferenceConnector.writeString(getActivity(),PreferenceConnector.USER_ID,userid); 
         String name=arr.getJSONObject(i).getString(GlobalData.name); 
         PreferenceConnector.writeString(getActivity(),PreferenceConnector.USER_NAME,name); 
         String email =arr.getJSONObject(i).getString(GlobalData.email); 
         PreferenceConnector.writeString(getActivity(),PreferenceConnector.USER_EMAIL,email); 
         String mobile=arr.getJSONObject(i).getString(GlobalData.username); 
         PreferenceConnector.writeString(getActivity(),PreferenceConnector.USER_PHONE,mobile); 
         String city=arr.getJSONObject(i).getString(GlobalData.city); 
          PreferenceConnector.writeString(getActivity(),PreferenceConnector.USER_CITY,city); 
        } 

        System.out.println("Results 2"+result2); 
        System.out.println("Array 2"+arr2); 

        for (int j=0;j<arr2.length();j++) 
        { 
         String id = arr2.getJSONObject(j).getString(GlobalData.Vehicle_id); 
         String user_id = arr2.getJSONObject(j).getString(GlobalData.user_id); 
         String brand = arr2.getJSONObject(j).getString(GlobalData.brand); 
         String model = arr2.getJSONObject(j).getString(GlobalData.model); 
         String type = arr2.getJSONObject(j).getString(GlobalData.type); 
         String fuel_type = arr2.getJSONObject(j).getString(GlobalData.fuel_type); 
         String reg_no = arr2.getJSONObject(j).getString(GlobalData.reg_no); 
         String year = arr2.getJSONObject(j).getString(GlobalData.year); 
         String km_driven = arr2.getJSONObject(j).getString(GlobalData.km_driven); 
         String variant = arr2.getJSONObject(j).getString(GlobalData.variant); 
         DBHandler db = new DBHandler(getActivity()); 


/*   "user_id": "20666", 
     "vehicle_id": "170", 
     "brand": "Hero MotoCorp", 
     "model": "Xtreme (2014)", 
     "type": "2w", 
     "fuel_type": "PETROL", 
     "year": "2014", 
     "km_driven": "17240", 
     "variant": ""*/ 
         db.insert_all(Integer.parseInt(user_id),  Integer.parseInt(id),brand,model,type,fuel_type,reg_no,km_driven,year,variant); 

         ArrayList<GarageGetterSetter> lis = db.getAllVehicles(); 

         System.out.println(lis); 



        } 

        for (int k=0;k<arr3.length();k++) 
        { 
         String otp_verify=arr3.getJSONObject(k).getString(GlobalData.verify_otp); 
         PreferenceConnector.writeString(getActivity(),PreferenceConnector.OTP_VERIFY,otp_verify); 
        } 

         LoginActivity.mPager.setCurrentItem(LoginActivity.mPager.getCurrentItem() + 1); 
       } 

       else if (UserDetails.equals(getResources().getString(R.string.response_new_user))){ 

        String result1 = jsonobj.getString(getResources().getString(R.string.response_results)); 
        JSONArray arr = new JSONArray(result1); 
        String result2 = jsonobj.getString(getResources().getString(R.string.response_results2)); 
        JSONArray arr2 = new JSONArray(result2); 
        String result3 = jsonobj.getString(getResources().getString(R.string.response_results3)); 
        JSONArray arr3 = new JSONArray(result3); 

        for (int k=0;k<arr3.length();k++) 
        { 
         String otp_verify=arr3.getJSONObject(k).getString(GlobalData.verify_otp); 
         PreferenceConnector.writeString(getActivity(),PreferenceConnector.OTP_VERIFY,otp_verify); 
        } 
        LoginActivity.mPager.setCurrentItem(LoginActivity.mPager.getCurrentItem() + 1); 
       } 

//     JSONArray arr2=new JSONArray(result2); 







      //  else if  (UserDetails.equals(getResources().getString(R.string.response_register))){ 








      //  } 

      } catch (Exception e) { 
       if (e.getMessage() != null) { 
        Toast.makeText(getActivity(),  getResources().getString(R.string.AsyncException), 
          Toast.LENGTH_SHORT).show(); 
       } 
       e.printStackTrace(); 
      } 
     } 
    } 
} 
} 

断片

Answer 1

間でデータを受け渡すには助けが必要どこベースの活動にそのインターフェイスを実装するインタフェース

を作成します。フラグメント取引

コールによるフラグメントトランザクションがバック

は、詳細については、このインターフェイス

から値を渡すながら

コールfragment1からこのインターフェースは、これはあなたが作ることによってフラグメントの間でデータを渡す試すことができますhttps://stackoverflow.com/a/32372333/5169060

Answer 2

をANSチェック共通のシングルトンクラス。要件に応じて、データを設定および取得するクラスを作成できます。 以下は、次の画面に移動する前に、これはあなたのデータを設定した後

public class DataClass { 
    private static DataClass dataObject = null; 

    private DataClass() { 

    } 

    public static DataClass getInstance() { 
     if (dataObject == null) 
      dataObject = new DataClass(); 
     return dataObject; 
    } 
    private String distributor_id;; 

    public String getDistributor_id() { 
     return distributor_id; 
    } 

    public void setDistributor_id(String distributor_id) { 
     this.distributor_id = distributor_id; 
    } 
} 

フラグメントの間でデータを渡すために使用することができシングルトンクラスの一例です。

DataHolderClass.getInstance().setDistributor_id("your data"); 

および取得するためのデータ

String data = DataClass.getInstance().getDistributor_id();