com.google.firebase.database.DatabaseException: Impossible de convertir la valeur de type java.lang.Double à cordes

ma classe Blog est icicom.google.firebase.database.DatabaseException: Impossible de convertir la valeur de type java.lang.Double à cordes

package com.nego.lakshan.nego; 


public class Blog { 

private String FROM; 
private String TO; 
private String DESCRIPTION; 
private String IMAGE; 
private String DATE; 
private double TOLAT; 
private double TOLNG; 
private double FROMLAT; 
private double FROMLNG; 

public Blog(){ 

} 

public Blog(String FROM, String TO, String DESCRIPTION, String IMAGE, String DATE, String TOLAT, String TOLNG, String FROMLAT, String FROMLNG) { 
    this.FROM = FROM; 
    this.TO = TO; 
    this.DESCRIPTION = DESCRIPTION; 
    this.IMAGE = IMAGE; 
    this.DATE = DATE; 
    this.TOLAT = Double.parseDouble(TOLAT); 
    this.TOLNG = Double.parseDouble(TOLNG); 
    this.FROMLAT = Double.parseDouble(FROMLAT); 
    this.FROMLNG = Double.parseDouble(FROMLNG); 
} 



public String getFROM() { 
    return FROM; 
} 

public void setFROM(String FROM) { 
    this.FROM = FROM; 
} 

public String getTO() { 
    return TO; 
} 

public void setTO(String TO) { 
    this.TO = TO; 
} 

public String getIMAGE() { 
    return IMAGE; 
} 

public void setIMAGE(String IMAGE) { 
    this.IMAGE = IMAGE; 
} 

public String getDATE() { 
    return DATE; 
} 

public void setDATE(String DATE) { 
    this.DATE = DATE; 
} 

public double getTOLAT() { 
    return TOLAT; 
} 

public void setTOLAT(String TOLAT) { 
    this.TOLAT = Double.parseDouble(TOLAT); 
} 

public double getTOLNG() { 
    return TOLNG; 
} 

public void setTOLNG(String TOLNG) { 
    this.TOLNG = Double.parseDouble(TOLNG); 
} 

public double getFROMLAT() { 
    return FROMLAT; 
} 

public void setFROMLAT(String FROMLAT) { 
    this.FROMLAT = Double.parseDouble(FROMLAT); 
} 

public double getFROMLNG() { 
    return FROMLNG; 
} 

public void setFROMLNG(String FROMLNG) { 
    this.FROMLNG = Double.parseDouble(FROMLNG); 
} 


public String getDESCRIPTION() { 
    return DESCRIPTION; 
} 

public void setDESCRIPTION(String DESCRIPTION) { 
    this.DESCRIPTION = DESCRIPTION; 
} 

}

et ma classe de fragmenter est utilisé pour afficher les données en recycleur vue que je reçois de la base de données d'exécution (Firebase). et ma classe de fragment est ici

package com.nego.lakshan.nego; 


import android.os.Bundle; 
import android.support.annotation.Nullable; 
import android.support.v4.app.Fragment; 
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.TextView; 
import android.widget.Toast; 


import com.firebase.ui.database.FirebaseRecyclerAdapter; 
import com.google.firebase.database.DatabaseReference; 




public class RecieverFragment extends Fragment { 


public RecieverFragment() { 
    // Required empty public constructor 
} 

private RecyclerView mBlogList; 
private DatabaseReference mDatabaseReference; 
private View v; 

@Override 

public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 
    v=inflater.inflate(R.layout.fragment_reciever, container, false); 


    mBlogList= (RecyclerView) v.findViewById(R.id.fragment); 


    mBlogList.setHasFixedSize(true); 
    mDatabaseReference = FirebaseDatabase.getInstance().getReference().child("Blog"); 





    mBlogList.setLayoutManager(new LinearLayoutManager(getContext())); 



    Toast.makeText(getContext(),"mmmm",Toast.LENGTH_SHORT).show(); 
    return v; 





} 

@Override 
public void onStart() { 
    super.onStart(); 
    FirebaseRecyclerAdapter<Blog,BlogViewHolder> 
mFirebaseRecyclerAdapter=new FirebaseRecyclerAdapter<Blog, BlogViewHolder> 
(Blog.class, 
      R.layout.blog_item, 
      BlogViewHolder.class, 
      mDatabaseReference) { 
     @Override 
     protected void populateViewHolder(BlogViewHolder viewHolder, Blog 
model, int position) { 


      Toast.makeText(getContext(),"maaa",Toast.LENGTH_SHORT).show(); 


      viewHolder.setDATE(model.getDATE()); 
      viewHolder.setDESCRIPTION(model.getDESCRIPTION()); 
      viewHolder.setFROM(model.getFROM()); 
      viewHolder.setTO(model.getTO()); 




     } 
    }; 
    mBlogList.setAdapter(mFirebaseRecyclerAdapter); 
} 

public static class BlogViewHolder extends RecyclerView.ViewHolder{ 

    View mView; 

    public BlogViewHolder(View itemView) { 
     super(itemView); 
     mView=itemView;} 
    public void setDATE(String DATE){ 
     TextView date = (TextView) mView.findViewById(R.id.DATE); 
     date.setText(DATE); 
    } 

    public void setDESCRIPTION(String DESCRIPTION){ 
     TextView desc= (TextView) mView.findViewById(R.id.DESCRIPTION); 
     desc.setText(DESCRIPTION); 
    } 

    public void setFROM(String FROM){ 
     TextView from = (TextView) mView.findViewById(R.id.FROM); 
     from.setText(FROM); 
    } 

    public void setTO(String TO){ 
     TextView to = (TextView) mView.findViewById(R.id.TO); 
     to.setText(TO); 
    } 

    } 
}

et ma mise en page fragment fichier

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
tools:context="com.nego.lakshan.nego.RecieverFragment" 
android:id="@+id/place_holder"> 

<!-- TODO: Update blank fragment layout --> 
<android.support.v7.widget.RecyclerView 
    android:scrollbars="vertical" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:id="@+id/fragment"> 
</android.support.v7.widget.RecyclerView> 


</FrameLayout>

et im en utilisant Vignettes pour une vue (messages de blog)

<?xml version="1.0" encoding="utf-8"?> 
<android.support.v7.widget.CardView 
xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="match_parent" 
android:layout_height="wrap_content" 
android:layout_margin="20dp"> 

<LinearLayout 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:orientation="vertical"> 
<LinearLayout 
android:layout_width="match_parent" 
android:layout_height="104dp" 
android:orientation="horizontal" 
android:weightSum="1"> 

<ImageView 
    android:id="@+id/PROFILEPIC" 
    android:layout_width="wrap_content" 
    android:layout_height="match_parent" 
    android:layout_weight="1.05" /> 

<LinearLayout 
    android:layout_width="244dp" 
    android:layout_height="wrap_content" 
    android:orientation="vertical"> 

    <TextView 
     android:id="@+id/NAME" 
     android:layout_width="match_parent" 
     android:layout_height="53dp" /> 

    <TextView 
     android:id="@+id/DATE" 
     android:layout_width="match_parent" 
     android:layout_height="52dp" /> 
</LinearLayout> 

</LinearLayout> 



    <TextView 
     android:id="@+id/DESCRIPTION" 
     android:layout_width="match_parent" 
     android:layout_height="164dp" /> 

    <LinearLayout 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:orientation="horizontal" 
     android:weightSum="1"> 

     <LinearLayout 
      android:layout_width="wrap_content" 
      android:layout_height="match_parent" 
      android:orientation="vertical" 
      android:layout_weight="0.16" 
      android:weightSum="1"> 
      <TextView 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:text="From" 
       android:layout_weight="0.31" /> 
      <TextView 
       android:layout_width="match_parent" 
       android:layout_height="0dp" 
       android:text="To" 
       android:layout_weight="0.51" /> 

     </LinearLayout> 

     <LinearLayout 
      android:layout_width="wrap_content" 
      android:layout_height="match_parent" 
      android:orientation="vertical" 
      android:layout_weight="0.88" 
      android:weightSum="1"> 

      <TextView 
       android:id="@+id/FROM" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:layout_weight="0.41" /> 

      <TextView 
       android:id="@+id/TO" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:layout_weight="0.19" /> 

     </LinearLayout> 

     <LinearLayout 
      android:layout_width="wrap_content" 
      android:layout_height="match_parent" 
      android:orientation="vertical"> 
      <Button 
       android:layout_width="109dp" 
       android:layout_height="wrap_content" 
       android:text="FROMLOCATION"/> 
      <Button 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:text="TOLOCATION"/> 


     </LinearLayout> 
    </LinearLayout> 
    <LinearLayout 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:orientation="horizontal"> 
     <Button 
      android:layout_width="164dp" 
      android:layout_height="wrap_content" 
      android:text="DIrection"/> 
     <Button 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:text="Message"/> 
    </LinearLayout> 


</LinearLayout> 


</android.support.v7.widget.CardView>

et im obtenir erreur et l'application se bloque quand j'appelle le fragment

com.nego.lakshan.nego E/AndroidRuntime: FATAL EXCEPTION: main 
                    Process: 
com.nego.lakshan.nego, PID: 28426 

com.google.firebase.database.DatabaseException: Failed to convert value of 
type java.lang.Double to String 
                     at 
com.google.android.gms.internal.zzbqi.zzaD(Unknown Source) 
                     at 
com.google.android.gms.internal.zzbqi.zzb(Unknown Source) 
                     at 
com.google.android.gms.internal.zzbqi.zza(Unknown Source) 
                     at 
com.google.android.gms.internal.zzbqi.zzb(Unknown Source) 
                     at 
com.google.android.gms.internal.zzbqi$zza.zze(Unknown Source) 
                     at 
com.google.android.gms.internal.zzbqi$zza.zzaG(Unknown Source) 
                     at 
com.google.android.gms.internal.zzbqi.zze(Unknown Source) 
                     at 
com.google.android.gms.internal.zzbqi.zzb(Unknown Source) 
                     at 
com.google.android.gms.internal.zzbqi.zza(Unknown Source) 
                     at 
com.google.firebase.database.DataSnapshot.getValue(Unknown Source) 
                     at 



com.firebase.ui.database.FirebaseRecyclerAdapter.parseSnapshot(FirebaseRecycler 
Adapter.java:163) 
                     at com.firebase.ui.database.FirebaseRecyclerAdapter.getItem(FirebaseRecyclerAdapter.java:152) 
                     at com.firebase.ui.database.FirebaseRecyclerAdapter.onBindViewHolder(FirebaseRecyclerAdapter.java:195) 
                     at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6356) 
                     at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6389) 
                     at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5335) 
                     at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5598) 
                     at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5440) 
                     at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5436) 
                     at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2224) 
                     at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1551) 
                     at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1511) 
                     at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:595) 
                     at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3583) 
                     at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3312) 
                     at android.support.v7.widget.RecyclerView.consumePendingUpdateOperations(RecyclerView.java:1648) 
                     at android.support.v7.widget.RecyclerView$1.run(RecyclerView.java:343) 
                     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767) 
                     at android.view.Choreographer.doCallbacks(Choreographer.java:580) 
                     at android.view.Choreographer.doFrame(Choreographer.java:549) 
                     at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753) 
                     at android.os.Handler.handleCallback(Handler.java:739) 
                     at android.os.Handler.dispatchMessage(Handler.java:95) 
                     at android.os.Looper.loop(Looper.java:135) 
                     at android.app.ActivityThread.main(ActivityThread.java:5319) 
                     at java.lang.reflect.Method.invoke(Native Method) 
                     at java.lang.reflect.Method.invoke(Method.java:372) 
                     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1016) 
                     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:811)

s'il vous plaît, aidez-moi à ce sujet.

Source

2017-09-12 Lakshan Chamika

ajoutez votre base de données s'il vous plaît –

@Lakshan Chamika Vous devez Convertissez la valeur double en chaîne lors de l'insertion des enregistrements. il suffit d'utiliser ceci ("" + votre valeur double) en insérant l'enregistrement cela résoudra votre problème. –

on a ajouté quelques valeurs à tester et j'ai oublié de les retirer de la base de données en temps réel .. Et firebase plus tard je me suis rendu et les supprimer, puis il a travaillé, merci

Source

2017-09-16 18:30:51

Le problème est dans votre Blog.class. Alors que vous déclarez les variables comme double, votre constructeur de classe suivante accepte des chaînes pour l'initialiser:

private double TOLAT; 
private double TOLNG; 
private double FROMLAT; 
private double FROMLNG;

maintenant le problème est que Firebase base de données va enregistrer comme ici par la définition et dans le « get » méthodes à savoir en tant que Double. Mais quand ils récupèrent les blogs, à partir de la base de données pour le constructeur de la classe, il ne parvient pas à le convertir en chaîne.

Veuillez corriger vos types de variables à des déclarations cohérentes et cette erreur devrait disparaître.

Source

2017-09-12 16:21:42

com.google.firebase.database.DatabaseException: Impossible de convertir la valeur de type java.lang.Double à cordes

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