com.google.firebase.database.DatabaseException: Fehler Werte vom Typ java.lang.Double in String konvertieren

meine Blog-Klasse ist hiercom.google.firebase.database.DatabaseException: Fehler Werte vom Typ java.lang.Double in String konvertieren

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; 
} 

}

und mein Fragment Klasse ist die Verwendung der Daten in Recycler sehen schau, was ich von der Runtime-Datenbank (Firebase) bekomme. und mein Fragment Klasse ist hier

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); 
    } 

    } 
}

und mein Fragment Layout Datei

<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>

und im CardView für Ansicht (Blog-Beiträge)

<?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>

und im immer Fehler und die app stürzt ab, wenn ich das Fragment anrufe

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)

bitte, hilf mir dabei.

Quelle

2017-09-12 Lakshan Chamika

fügen Sie Ihre Datenbank bitte –

@Lakshan Chamika Sie müssen wandeln Sie beim Einfügen der Datensätze den doppelten Wert in eine Zeichenfolge um. benutze einfach diesen ("" + "meinDoppelwert"), während du den Datensatz einfügst, das wird dein Problem lösen. –

ich einige Werte hinzugefügt zu testen und ich habe vergessen, sie von der Feuerbasis Echtzeit-Datenbank zu entfernen .. Und später wurde mir klar, und gelöscht sie es dank dann arbeitete,

Quelle

2017-09-16 18:30:51

Das Problem ist in Ihrer Blog.class. Während Sie die folgenden Variablen als Doppel deklarieren, ist Ihr Klassenkonstruktor Strings akzeptieren es zu initialisieren:

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

jetzt das Problem ist, dass Firebase Database es gemäß der Definition hier und im retten wird ‚get‘ Methoden zB als Double. Wenn sie jedoch die Blogs abrufen, kann sie aus der Datenbank für den Klassenkonstruktor nicht in String konvertiert werden.

Bitte korrigieren Sie Ihre Variablentypen zu konsistenten Deklarationen und dieser Fehler sollte verschwinden.

Quelle

2017-09-12 16:21:42

com.google.firebase.database.DatabaseException: Fehler Werte vom Typ java.lang.Double in String konvertieren

Antwort

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