获取“默认FirebaseApp在此过程中未初始化”尽管在使用FirebaseStorage时初始化FirebaseApp [英] Getting "Default FirebaseApp is not initialized in this process" despite initializing FirebaseApp while using FirebaseStorage
本文介绍了获取“默认FirebaseApp在此过程中未初始化”尽管在使用FirebaseStorage时初始化FirebaseApp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
$ b $ MainActivity.java
$ p $
public class MainActivity扩展了AppCompatActivity {
ArrayList< Car> carListSuper;
RecyclerView rvCarList;
ProgressBar progressbar;
私人CarListAdapter carListAdapter;
@Override
protected void onCreate（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）;
setContentView（R.layout.activity_main）;
carListSuper = new ArrayList<>（）;
Firebase myFirebaseRef =新的Firebase（https://carbar-7dae7.firebaseio.com/）;
rvCarList =（RecyclerView）findViewById（R.id.rvCarList）;
rvCarList.setItemAnimator（new FeedItemAnimator（））;
progressbar =（ProgressBar）findViewById（R.id.progressCarLoad）;
carListAdapter = new CarListAdapter（carListSuper，MainActivity.this）;
RecyclerView.LayoutManager linearLayoutManager = new LinearLayoutManager（this）;
rvCarList.setLayoutManager（linearLayoutManager）;
rvCarList.setAdapter（carListAdapter）;
$ b $ myFirebaseRef.child（carList）。addValueEventListener（new ValueEventListener（）{
$ b $ @Override
public void onDataChange（DataSnapshot snapshot）{
Log.i（saz，snapshot.getValue（）。toString（））;
progressbar.setVisibility（View.GONE）;
carListSuper.clear（）;
// String jsonString = snapshot.getValue（）。toString（）;
try {
for（int i = 0; i< snapshot.getChildrenCount（）; i ++）{
// Car carList = gson.fromJson（snapshot.child（i +），Car.class）;
DataSnapshot snap = snapshot.child（i +）; $ b $ carListSuper.add（FirebaseParser。 carParser（snap））;
}
carListAdapter.updatelist（carListSuper）;
Log.i（saz，snapshot.getValue（）。toString（））;
} catch（Exception e）{
e.printStackTrace（）;
}
}
@Override public void onCancelled FirebaseError错误）{}
}）;
$ / code $ / pre
$ b $ CarListAdapter.java
public class CarListAdapter< T>扩展RecyclerView.Adapter< CarListAdapter.ViewHolder> {
static int i = 0;
private static Context m_context;
列表< Car> carList = null;
public static final int VIEW_TYPE_DEFAULT = 1;
public static final int VIEW_TYPE_LOADER = 2;
//提供一个合适的构造函数（取决于数据集的种类）
public CarListAdapter（List< Car> carList，Context context）{
Log.i（saz ，dealerCircularCalls：+ this.carList）;
this.carList = carList;
m_context = context;
$ b $ //创建新的视图（由布局管理器调用）
@Override $ b $ public CarListAdapter.ViewHolder onCreateViewHolder（ViewGroup parent，int viewType）{
//创建一个新视图
View v = LayoutInflater.from（parent.getContext（））
.inflate（R.layout.car_item，parent，false）;
//设置视图的大小，边距，填充和布局参数
ViewHolder vh = new ViewHolder（v）;
return vh;
$ b $ public void updatelist（ArrayList< Car> list）{
ArrayList tempList = new ArrayList（）;
tempList.addAll（list）;
Log.i（saz，Size on notifyupdate：+ list.size（））;
carList.clear（）;
carList.addAll（tempList）;
notifyDataSetChanged（）;
}
//替换视图的内容（由布局管理器调用）
@Override
public void onBindViewHolder（final ViewHolder持有者，final int的位置） {
// - 在此位置从数据集中获取元素
// - 用该元素替换视图的内容
Log.i（saz，position rv：+位置）;
/ * if（position％2！= 0）{
holder.cv.setCardBackgroundColor（m_context.getResources（）。getColor（R.color.lighter_gray））;
} else {
holder.cv.setCardBackgroundColor（m_context.getResources（）。getColor（R.color.white））;
} * /
/ * CarBarDb db = new CarBarDb（m_context，
CarBarDb.DATABASE_NAME，null，CarBarDb.DATABASE_VERSION）; * /
Car car = carList.get（position ）;
holder.provider.setText（Zoomcar）;
holder.carType.setText（car.getCarType（））;
holder.carName.setText（car.getCarName（））;
holder.tarrif.setText（car.getPrice_per_hour_weekday（））;
$ b if（m_context！= null）{
FirebaseStorage storage = FirebaseStorage.getInstance（FirebaseApp.initializeApp（m_context））;
StorageReference storageRef = storage.getReferenceFromUrl（gs：//carbar-7dae7.appspot.com/）; （）新增的OnSuccessListener< Uri>（）{
@Override
public void onSuccess（Uri uri）{
Picasso.with（m_context）.load（uri）
.error（R.drawable.no_image）
.into（holder.imCarImage）;
}
}）;
}
//db.close（）;
}
//返回数据集的大小（由布局管理器调用）
@Override
public int getItemCount（）{
Log。我（saz，carList.size（）：+ carList.size（））;
返回carList.size（）;
$ b public static class ViewHolder extends RecyclerView.ViewHolder {
//在这种情况下，每个数据项只是一个字符串
CardView cv;
TextView提供程序;
TextView carName;
TextView carType;
TextView tarrif;
ImageButton imCarImage;
public ViewHolder（final View itemView）{
super（itemView）;
cv =（CardView）itemView.findViewById（R.id.cvCarItem）;
provider =（TextView）cv.findViewById（R.id.tvProvider）;
carName =（TextView）cv.findViewById（R.id.tvCarName）;
carType =（TextView）cv.findViewById（R.id.tvCarType）;
tarrif =（TextView）cv.findViewById（R.id.tvTarrif）;
imCarImage =（ImageButton）cv.findViewById（R.id.imgCarImage）;
$ b仍然，我得到以下错误。 p>
java.lang.IllegalStateException：缺省的FirebaseApp在这个过程中没有初始化com.saz.firebasetest。确保先调用FirebaseApp.initializeApp（Context）。
在主要活动中，我将这个适配器初始化为
carListAdapter = new CarListAdapter（carListSuper，MainActivity.this）;
我在这个论坛上搜索，但没有得到什么确切的问题。请帮忙。
日志行：
致命例外：main
过程：com.saz.firebasetest，PID：6991
java.lang.IllegalArgumentException：Null不是FirebaseApp的有效值。
在com.google.android.gms.common.internal.zzac.zzb（未知来源）
在com.google.firebase.storage.FirebaseStorage.getInstance（未知来源）
在com .saz.firebasetest.controller.CarListAdapter.onBindViewHolder（CarListAdapter.java:86）
at com.saz.firebasetest.controller.CarListAdapter.onBindViewHolder（CarListAdapter.java:29）
at android.support.v7 .widget.RecyclerView $ Adapter.onBindViewHolder（RecyclerView.java:5768）
at android.support.v7.widget.RecyclerView $ Adapter.bindViewHolder（RecyclerView.java:5801）
at android.support.v7 .widget.RecyclerView $ Recycler.getViewForPosition（RecyclerView.java:5037）
at android.support.v7.widget.RecyclerView $ Recycler.getViewForPosition（RecyclerView.java:4913）
at android.support.v7 .widget.LinearLayoutManager $ LayoutState.next（LinearLayoutManager.java:2029）
at android.support.v7.widget.LinearLayoutManager.layoutChunk（LinearLayoutManager.java:1414）
at android.support.v7.widget .LinearLayoutManager.fill（LinearLayo utManager.java:1377）
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren（LinearLayoutManager.java:578）
at android.support.v7.widget.RecyclerView.dispatchLayoutStep2（RecyclerView.java： 3260）
at android.support.v7.widget.RecyclerView.dispatchLayout（RecyclerView.java:3069）
at android.support.v7.widget.RecyclerView.onLayout（RecyclerView.java:3518）
at android.view.View.layout（View.java:16975）
at android.view.ViewGroup.layout（ViewGroup.java:5579）
at android.widget.FrameLayout.layoutChildren（FrameLayout .java：396）
at android.widget.FrameLayout.onLayout（FrameLayout.java:333）
at android.view.View.layout（View.java:16975）
在android。 view.ViewGroup.layout（ViewGroup.java:5579）
在android.widget.FrameLayout.layoutChildren（FrameLayout.java:396）
在android.widget.FrameLayout.onLayout（FrameLayout.java:333）
at android.view.View.layout（View.java:16975）
at android.view.ViewGroup.layout（ViewGroup.java:5579）
at android.su在android.view.View.layout（View.java:16975）
在android.view.ViewGroup.layout（视图组。在Android.widget.FrameLayout.layoutChildren（FrameLayout.java:396）
android.widget.FrameLayout.onLayout（FrameLayout.java:333）
在android.view .View.layout（View.java:16975）
at android.view.ViewGroup.layout（ViewGroup.java:5579）
at android.widget.LinearLayout.setChildFrame（LinearLayout.java:2001）
at android.widget.LinearLayout.layoutVertical（LinearLayout.java:1844）
at android.widget.LinearLayout.onLayout（LinearLayout.java:1753）
at android.view.View.layout（ View.java:16975）
at android.view.ViewGroup.layout（ViewGroup.java:5579）
at android.widget.FrameLayout.layoutChildren（FrameLayout.java:396）
at android .widget.FrameLayout.onLayout（FrameLayout.java:333）
at com.android.internal.policy.PhoneWindow $ DecorView.onLayout（PhoneWindow.java:2755）
at android.view.java:16975
在android.view.ViewGroup.layout（ViewGroup.java:5579）
在android.view.ViewRootImpl.performLayout（ViewRootImpl.java： 2552）
at android.view.ViewRootImpl.performTraversals（ViewRootImpl.java:2255）
at android.view.ViewRootImpl.doTraversal（ViewRootImpl.java:1321）
at android.view.ViewRootImpl $ Tracker.Runnable.run（ViewRootImpl.java:6737）
at android.view.Choreographer $ CallbackRecord.run（Choreographer.java:894）
at android.view.Choreographer.doCallbacks（Choreographer.java:696 ）
at android.view.Choreographer.doFrame（Choreographer.java:631）
at android.view.Choreographer $ FrameDisplayEventReceiver.run（Choreographer.java:880）
at android.os。 Handler.handleCallback（Handler.java:815）
at android.os.Handler.dispatchMessage（Handler.java:104）
at android.os.Looper.loop（Looper.java:207）
at android.app.ActivityThread.main（ActivityThread.java:5776）
at java.lang.reflect.Method.invoke（Native Method）
a t com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:789）
at com.android.internal.os.ZygoteInit.main（ZygoteInit。
---------系统的开始
解决方案您正在混合使用Firebase SDK版本。
这来自Firebase 2.x SDK：
Firebase myFirebaseRef =新的Firebase（https://carbar-7dae7.firebaseio.com/）;
但Firebase存储仅包含在Firebase 9.x中。
您需要切换到单个Firebase SDK版本。如果您要使用Firebase存储，那么版本9.x即可。
如果您按照 firebase.google.com上的说明，您可以看到数据库和存储的依赖关系：
依赖关系{
// ...
编译'com.google.firebase：firebase-database：9.6.1'
compile'com。 google.firebase：firebase-storage：9.6.1'
}
9.6.1并不重要，但版本必须相同，而现在你可能通过 compile'com.firebase：firebase-client-android：2.5.2+' 。
I am trying to download images using Firebase Storage. I have written the following code
MainActivity.java
public class MainActivity extends AppCompatActivity {
ArrayList<Car> carListSuper;
RecyclerView rvCarList;
ProgressBar progressbar;
private CarListAdapter carListAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
carListSuper = new ArrayList<>();
Firebase myFirebaseRef = new Firebase("https://carbar-7dae7.firebaseio.com/");
rvCarList = (RecyclerView) findViewById(R.id.rvCarList);
rvCarList.setItemAnimator(new FeedItemAnimator());
progressbar = (ProgressBar) findViewById(R.id.progressCarLoad);
carListAdapter = new CarListAdapter(carListSuper,MainActivity.this);
RecyclerView.LayoutManager linearLayoutManager = new LinearLayoutManager(this);
rvCarList.setLayoutManager(linearLayoutManager);
rvCarList.setAdapter(carListAdapter);
myFirebaseRef.child("carList").addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot snapshot) {
Log.i("saz",snapshot.getValue().toString());
progressbar.setVisibility(View.GONE);
carListSuper.clear();
//String jsonString = snapshot.getValue().toString();
try {
for (int i=0; i<snapshot.getChildrenCount();i++) {
//Car carList = gson.fromJson(snapshot.child(i+""), Car.class);
DataSnapshot snap = snapshot.child(i+"");
carListSuper.add(FirebaseParser.carParser(snap));
}
carListAdapter.updatelist(carListSuper);
Log.i("saz",snapshot.getValue().toString());
} catch (Exception e) {
e.printStackTrace();
}
}
@Override public void onCancelled(FirebaseError error) { }
});
}
CarListAdapter.java
public class CarListAdapter<T> extends RecyclerView.Adapter<CarListAdapter.ViewHolder> {
static int i = 0;
private static Context m_context;
List<Car> carList = null;
public static final int VIEW_TYPE_DEFAULT = 1;
public static final int VIEW_TYPE_LOADER = 2;
// Provide a suitable constructor (depends on the kind of dataset)
public CarListAdapter(List<Car> carList, Context context) {
Log.i("saz", "dealerCircularCalls: " + this.carList);
this.carList = carList;
m_context = context;
}
// Create new views (invoked by the layout manager)
@Override
public CarListAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
// create a new view
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.car_item, parent, false);
// set the view's size, margins, paddings and layout parameters
ViewHolder vh = new ViewHolder(v);
return vh;
}
public void updatelist(ArrayList<Car> list) {
ArrayList tempList = new ArrayList();
tempList.addAll(list);
Log.i("saz", "Size on notifyupdate: " + list.size());
carList.clear();
carList.addAll(tempList);
notifyDataSetChanged();
}
// Replace the contents of a view (invoked by the layout manager)
@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
// - get element from your dataset at this position
// - replace the contents of the view with that element
Log.i("saz", "position rv: " + position);
/*if (position % 2 != 0) {
holder.cv.setCardBackgroundColor(m_context.getResources().getColor(R.color.lighter_gray));
} else {
holder.cv.setCardBackgroundColor(m_context.getResources().getColor(R.color.white));
}*/
/*CarBarDb db = new CarBarDb(m_context,
CarBarDb.DATABASE_NAME, null, CarBarDb.DATABASE_VERSION);*/
Car car = carList.get(position);
holder.provider.setText("Zoomcar");
holder.carType.setText(car.getCarType());
holder.carName.setText(car.getCarName());
holder.tarrif.setText(car.getPrice_per_hour_weekday());
if (m_context!=null) {
FirebaseStorage storage = FirebaseStorage.getInstance(FirebaseApp.initializeApp(m_context));
StorageReference storageRef = storage.getReferenceFromUrl("gs://carbar-7dae7.appspot.com/");
storageRef.child("CarImages/figo.png").getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
@Override
public void onSuccess(Uri uri) {
Picasso.with(m_context).load(uri)
.error(R.drawable.no_image)
.into(holder.imCarImage);
}
});
}
//db.close();
}
// Return the size of your dataset (invoked by the layout manager)
@Override
public int getItemCount() {
Log.i("saz", "carList.size(): " + carList.size());
return carList.size();
}
public static class ViewHolder extends RecyclerView.ViewHolder {
// each data item is just a string in this case
CardView cv;
TextView provider;
TextView carName;
TextView carType;
TextView tarrif;
ImageButton imCarImage;
public ViewHolder(final View itemView) {
super(itemView);
cv = (CardView) itemView.findViewById(R.id.cvCarItem);
provider = (TextView) cv.findViewById(R.id.tvProvider);
carName = (TextView) cv.findViewById(R.id.tvCarName);
carType = (TextView) cv.findViewById(R.id.tvCarType);
tarrif = (TextView) cv.findViewById(R.id.tvTarrif);
imCarImage = (ImageButton) cv.findViewById(R.id.imgCarImage);
}
}
Still, I am getting the following error.
java.lang.IllegalStateException: Default FirebaseApp is not initialized in this process com.saz.firebasetest. Make sure to call FirebaseApp.initializeApp(Context) first.
And in main activity, I initialize this adapter as
carListAdapter = new CarListAdapter(carListSuper,MainActivity.this);
I searched on this forum but did not get what is the exact issue. Please help.
Log lines:
FATAL EXCEPTION: main
Process: com.saz.firebasetest, PID: 6991
java.lang.IllegalArgumentException: Null is not a valid value for the FirebaseApp.
at com.google.android.gms.common.internal.zzac.zzb(Unknown Source)
at com.google.firebase.storage.FirebaseStorage.getInstance(Unknown Source)
at com.saz.firebasetest.controller.CarListAdapter.onBindViewHolder(CarListAdapter.java:86)
at com.saz.firebasetest.controller.CarListAdapter.onBindViewHolder(CarListAdapter.java:29)
at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:5768)
at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:5801)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5037)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4913)
at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2029)
at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1414)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1377)
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:578)
at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3260)
at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3069)
at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3518)
at android.view.View.layout(View.java:16975)
at android.view.ViewGroup.layout(ViewGroup.java:5579)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:396)
at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
at android.view.View.layout(View.java:16975)
at android.view.ViewGroup.layout(ViewGroup.java:5579)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:396)
at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
at android.view.View.layout(View.java:16975)
at android.view.ViewGroup.layout(ViewGroup.java:5579)
at android.support.v7.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:433)
at android.view.View.layout(View.java:16975)
at android.view.ViewGroup.layout(ViewGroup.java:5579)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:396)
at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
at android.view.View.layout(View.java:16975)
at android.view.ViewGroup.layout(ViewGroup.java:5579)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:2001)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1844)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1753)
at android.view.View.layout(View.java:16975)
at android.view.ViewGroup.layout(ViewGroup.java:5579)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:396)
at android.widget.FrameLayout.onLayout(FrameLayout.java:333)
at com.android.internal.policy.PhoneWindow$DecorView.onLayout(PhoneWindow.java:2755)
at android.view.View.layout(View.java:16975)
at android.view.ViewGroup.layout(ViewGroup.java:5579)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2552)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2255)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1321)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6737)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:894)
at android.view.Choreographer.doCallbacks(Choreographer.java:696)
at android.view.Choreographer.doFrame(Choreographer.java:631)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:880)
at android.os.Handler.handleCallback(Handler.java:815)
at android.os.Handler.dispatchMessage(Handler.java:104)
at android.os.Looper.loop(Looper.java:207)
at android.app.ActivityThread.main(ActivityThread.java:5776)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.
--------- beginning of system
解决方案 You're mixing Firebase SDK versions.
This comes from a Firebase 2.x SDK:
Firebase myFirebaseRef = new Firebase("https://carbar-7dae7.firebaseio.com/");
But Firebase Storage is only included in Firebase 9.x.
You'll need to switch to a single Firebase SDK version. Given that you want to use Firebase Storage, that will be version 9.x.
If you follow the instructions on firebase.google.com, you can see the dependencies for the Database and Storage are:
dependencies {
// ...
compile 'com.google.firebase:firebase-database:9.6.1'
compile 'com.google.firebase:firebase-storage:9.6.1'
}
Whether you use exactly 9.6.1 doesn't matter all that much, but the versions must be the same, while you now likely include the database via compile 'com.firebase:firebase-client-android:2.5.2+'.
这篇关于获取“默认FirebaseApp在此过程中未初始化”尽管在使用FirebaseStorage时初始化FirebaseApp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IT屋！
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