使用Firebase时发生StackoverflowError

使用Firebase时发生StackoverflowError

本文介绍了使用Firebase时发生StackoverflowError的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

限时删除!!

我目前正在尝试制作一个应用程序,它会在地图上显示一个位置,同时将其保存到Firebase以备后用。



这是我的MapsActivity :

 公共类MapsActivity扩展AppCompatActivity 
实现OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient .OnConnectionFailedListener,LocationListener {

GoogleMap google地图;
LocationRequest mLocationRequest;
GoogleApiClient mGoogleApiClient;
标记标记;
意向意图;
DatabaseReference myRef;
FirebaseDatabase数据库;
Longlat longlat;
private static final String TAG =PvCOS;

@Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
SupportMapFragment mapFragment =(SupportMapFragment)getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);

intent = getIntent();
buildGoogleApiClient();
mGoogleApiClient.connect();
database = FirebaseDatabase.getInstance();
myRef = database.getReference();

}

//发送到db的类
public class Longlat {

public double longitude;
公共双纬度;
$ b public Longlat(){
//调用DataSnapshot.getValue(longlat.class)所需的默认构造函数
}

public Longlat(Double经度,双纬度){
this.longitude =经度;
this.latitude =纬度;



$ b protected synchronized buildGoogleApiClient(){
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this )
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}

@Override
public void onMapReady(GoogleMap map){

googleMap = map;
setUpMap();


public void setUpMap(){
try {
googleMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
googleMap.setMyLocationEnabled(true);
googleMap.getUiSettings()。setZoomControlsEnabled(true);
} catch(SecurityException se){
// TODO:20/09/2016处理异常
}
}

@Override
public void onConnected(Bundle bundle){
try {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(10);
mLocationRequest.setFastestInterval(10);
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);

LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient,mLocationRequest,this);
} catch(SecurityException se){
// TODO:20/09/2016处理异常
}
}

@Override
public void onConnectionSuspended(int i){

}

@Override
public void onLocationChanged(Location location){

// save到服务器
longlat = new Longlat(location.getLongitude(),location.getLatitude());
myRef.child(users)。child(intent.getStringExtra(name))。setValue(longlat);
LatLng latLng = new LatLng(location.getLatitude(),location.getLongitude());
marker = googleMap.addMarker(new MarkerOptions()
.position(latLng)
.title(intent.getStringExtra(name))
.icon(BitmapDescriptorFactory.defaultMarker BitmapDescriptorFactory.HUE_RED)));



$覆盖
public void onConnectionFailed(ConnectionResult connectionResult){


protected void onStop(){
//取消注册位置更新
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient,this);

//删除先前放置的标记
if(marker!= null){
marker.remove();
}
super.onStop();
}

}

当我运行它时,一个白色的屏幕,这个错误在logcat:

  09-20 13:18:25.206 21875-21875 / grp6.PvCOS E / UncaughtException:java.lang.StackOverflowError:在java.lang.reflect.Method.invoke中的堆栈大小8MB 
(Native方法)$ b $ com com.google.android.gms.internal.zzaln $ zza.zzce未知源)
在com.google.android.gms.internal.zzaln.zzbw(未知源)
在com.google.android.gms.internal.zzaln.zzcd(未知源)
在com.google.android.gms.internal.zzaln $ zza.zzce(未知来源)
在com.google.android.gms.internal.zzaln.zzbw(未知来源)
在com。 google.android.gms.internal.zzaln.zzcd(未知来源)
在com.google.android.gms.internal.zzaln $ zza.zzce(未知来源)
在com.google.android。 gms.internal.zzaln.zzbw(未知来源)
在com.google.android.gms.internal.zzaln.zzcd(未知来源)
来自com.google.android.gms .internal.zzaln $ zza.zzce(未知来源)
在com.google.android.gms.internal.zzaln.zzbw(未知来源)
在com.google.android.gms.internal.zzaln .zzcd(未知来源)
在com.google.android.gms.internal.zzaln $ zza.zzce(未知来源)
在com.google.android.gms.internal.zzaln.zzbw(未知源)
在com.google.android.gms.internal.zzaln.zzcd(未知源)
在com.google.android.gms.internal.zzaln $ zza.zzce(未知源)
在com.google.android.gms.internal.zzaln.zzbw(未知来源)
在com.google.android.gms.internal.zzaln.zzcd(未知来源)
在com.google .android.gms.internal.zzaln $ zza.zzce(未知来源)
在com.google.android.gms.internal.zzaln.zzbw(未知来源)
来自com.google.android.gms .internal.zzaln.zzcd(未知来源)
在com.google.android.gms.internal.zzaln $ zza.zzce(未知来源)
在com.google.android.gms.internal.zzaln .zzbw(未知来源)
在com.goog le.android.gms.internal.zzaln.zzcd(未知来源)
在com.google.android.gms.internal.zzaln $ zza.zzce(未知来源)
在com.google.android。 gms.internal.zzaln.zzbw(未知来源)
在com.google.android.gms.internal.zzaln.zzcd(未知来源)
在com.google.android.gms.internal.zzaln $ zza.zzce(未知来源)
在com.google.android.gms.internal.zzaln.zzbw(未知来源)
在com.google.android.gms.internal.zzaln.zzcd(未知来源)
在com.google.android.gms.internal.zzaln $ zza.zzce(未知来源)
在com.google.android.gms.internal.zzaln.zzbw(未知来源)
在com.google.android.gms.internal.zzaln.zzcd(未知来源)
在com.google.android.gms.internal.zzaln $ zza.zzce(未知来源)
在com。 google.android.gms.internal.zzaln.zzbw(未知来源)
,位于com.google.android.gms.internal.zzaln.zzcd(未知来源)
,位于com.google.android.gms。 internal.zzaln $ zza.zzce(未知来源)
a t com.google.android.gms.internal.zzaln.zzbw(未知来源)
,位于com.google.android.gms.internal.zzaln.zzcd(未知来源)
,位于com.google.android .gms.internal.zzaln $ zza.zzce(未知来源)
在com.google.android.gms.internal.zzaln.zzbw(未知来源)
在com.google.android.gms.internal .zzaln.zzcd(未知来源)
在com.google.android.gms.internal.zzaln $ zza.zzce(未知来源)
在com.google.android.gms.internal.zzaln.zzbw (未知来源)
在com.google.android.gms.internal.zzaln.zzcd(未知来源)
来自com.google.android.gms.internal.zzaln $ zza.zzce(未知来源)
在com.google.android.gms.internal.zzaln.zzbw(未知来源)
在com.google.android.gms.internal.zzaln.zzcd(未知来源)
在com .google.android.gms.internal.zzaln $ zza.zzce(未知来源)
在com.google.android.gms.internal.zzaln.zzbw(未知来源)
在com.google.android .gms.internal.zzaln.zzcd(Unknown Sour ce)
在com.google.android.gms.internal.zzaln $ zza.zzce(未知来源)
在com.google.android.gms.internal.zzaln.zzbw(未知来源)
在com.google.android.gms.internal.zzaln.zzcd(未知来源)
在com.google.android.gms.internal.zzaln $ zza.zzce(未知来源)
在com .google.android.gms.internal.zzaln.zzbw(未知来源)
,位于com.google.android.gms.internal.zzaln.zzcd(未知来源)
,位于com.google.android.gms .internal.zzaln $ zza.zzce(未知来源)
在com.google.android.gms.internal.zzaln.zzbw(未知来源)
在com.google.android.gms.internal.zzaln .zzcd(未知来源)
在com.google.android.gms.internal.zzaln $ zza.zzce(未知来源)
在com.google.android.gms.inter
code>

很确定它的Firebase部分导致了错误,因为我发现另一个线索是关于试图通过Firebase发送图片的太大了,但我发送的只是一个简单的对象。

解决方案

我刚刚误解了如何在Firebase中创建新的子项目。
我试图用.child添加它们。
$ b

  myRef = database.getReference(PvCOS / users); 

myRef.child(users)。child(intent.getStringExtra(name))。 setValue(longlat);

但是我应该在添加引用时添加子元素:

  myRef = database.getReference(PvCOS / users+ name); 
myRef.setValue(longlat);


I'm currently trying to make an app that will show you a position on a map whilst also saving it to Firebase for later use.

This is my MapsActivity:

public class MapsActivity extends AppCompatActivity
        implements OnMapReadyCallback,
        GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener, LocationListener {

    GoogleMap googleMap;
    LocationRequest mLocationRequest;
    GoogleApiClient mGoogleApiClient;
    Marker marker;
    Intent intent;
    DatabaseReference myRef;
    FirebaseDatabase database;
    Longlat longlat;
    private static final String TAG ="PvCOS";

    @Override
    protected void onCreate (Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_maps);
        SupportMapFragment mapFragment = (SupportMapFragment)  getSupportFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);

        intent = getIntent();
        buildGoogleApiClient();
        mGoogleApiClient.connect();
        database = FirebaseDatabase.getInstance();
        myRef = database.getReference();

    }

    //class to be sent to db
    public class Longlat {

       public double longitude;
       public double latitude;

       public Longlat() {
           // Default constructor required for calls to DataSnapshot.getValue(longlat.class)
       }

       public Longlat(Double longitude, Double latitude) {
           this.longitude = longitude;
           this.latitude = latitude;
       }

    }

    protected synchronized void buildGoogleApiClient() {
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
    }

    @Override
    public void onMapReady(GoogleMap map) {

        googleMap = map;
        setUpMap();
    }

    public void setUpMap() {
        try {
            googleMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
            googleMap.setMyLocationEnabled(true);
            googleMap.getUiSettings().setZoomControlsEnabled(true);
        } catch (SecurityException se){
            // TODO: 20/09/2016 handle exception
        }
    }

    @Override
    public void onConnected(Bundle bundle) {
        try {
            mLocationRequest = new LocationRequest();
            mLocationRequest.setInterval(10);
            mLocationRequest.setFastestInterval(10);
            mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);

            LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient,     mLocationRequest, this);
        } catch (SecurityException se){
            // TODO: 20/09/2016 handle exception
        }
    }

    @Override
    public void onConnectionSuspended(int i) {

    }

    @Override
    public void onLocationChanged(Location location) {

        //save to server
        longlat = new     Longlat(location.getLongitude(),location.getLatitude());
        myRef.child("users").child(intent.getStringExtra("name")).setValue(longlat);
        LatLng latLng = new LatLng(location.getLatitude(),     location.getLongitude());
        marker = googleMap.addMarker(new MarkerOptions()
                .position(latLng)
                .title(intent.getStringExtra("name"))
                .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED)));

    }


    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {

    }
    protected void onStop() {
        //unregister location updates
        LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);

        //remove previously placed Marker
        if (marker != null) {
            marker.remove();
        }
        super.onStop();
    }

}

When I run it, I get a white screen and this error in logcat:

09-20 13:18:25.206 21875-21875/grp6.PvCOS E/UncaughtException: java.lang.StackOverflowError: stack size 8MB
at     java.lang.reflect.Method.invoke(Native Method)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzbw(Unknown Source)
at     com.google.android.gms.internal.zzaln.zzcd(Unknown Source)
at     com.google.android.gms.internal.zzaln$zza.zzce(Unknown Source)
at     com.google.android.gms.inter

Pretty sure its the Firebase part that's causing the error, as I found another thread about someone trying to send a picture over Firebase which was too big, but all I'm sending is a simple object.

解决方案

I had just misunderstood how you create new children in Firebase.I tried to add them with .child

        myRef = database.getReference("PvCOS/users");

myRef.child("users").child(intent.getStringExtra("name")).setValue(longlat);

But i should have just added the children when getting my reference:

        myRef = database.getReference("PvCOS/users"+name);
        myRef.setValue(longlat);

这篇关于使用Firebase时发生StackoverflowError的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

1403页,肝出来的..

09-06 16:37