我正在进行大学四年级的最后一年项目，而且我似乎一直遇到同样的问题。我正在创建一个帮助用户戒烟的应用程序。我正在使用我在互联网上找到的登录系统。当我运行代码时，它给了我这个错误。当我尝试以现有用户身份登录或创建新用户时，会发生错误。我正在为我的项目使用Node.js后端。
我很快就需要帮助。
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.learn2crack, PID: 3609
java.lang.IllegalStateException: Fatal Exception thrown on Scheduler.Worker thread.
at rx.android.schedulers.LooperScheduler$ScheduledAction.run(LooperScheduler.java:114)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
Caused by: rx.exceptions.OnErrorFailedException: Error occurred when trying to propagate error to Observer.onError
at rx.observers.SafeSubscriber._onError(SafeSubscriber.java:186)
at rx.observers.SafeSubscriber.onError(SafeSubscriber.java:115)
at rx.internal.operators.OperatorSubscribeOn$1$1.onError(OperatorSubscribeOn.java:59)
at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.checkTerminated(OperatorObserveOn.java:276)
at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.call(OperatorObserveOn.java:219)
at rx.android.schedulers.LooperScheduler$ScheduledAction.run(LooperScheduler.java:107)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
Caused by: rx.exceptions.CompositeException: 2 exceptions occurred.
at rx.observers.SafeSubscriber._onError(SafeSubscriber.java:186)
at rx.observers.SafeSubscriber.onError(SafeSubscriber.java:115)
at rx.internal.operators.OperatorSubscribeOn$1$1.onError(OperatorSubscribeOn.java:59)
at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.checkTerminated(OperatorObserveOn.java:276)
at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.call(OperatorObserveOn.java:219)
at rx.android.schedulers.LooperScheduler$ScheduledAction.run(LooperScheduler.java:107)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
Caused by: rx.exceptions.CompositeException$CompositeExceptionCausalChain: Chain of Causes for CompositeException In Order Received =>
at android.util.Log.printlns(Log.java:415)
at com.android.internal.os.RuntimeInit.Clog_e(RuntimeInit.java:61)
at com.android.internal.os.RuntimeInit.-wrap0(RuntimeInit.java)
at com.android.internal.os.RuntimeInit$UncaughtHandler.uncaughtException(RuntimeInit.java:86)
at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:1068)
at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:1063)
at rx.android.schedulers.LooperScheduler$ScheduledAction.run(LooperScheduler.java:118)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
Caused by: retrofit2.adapter.rxjava.HttpException: HTTP 404 Not Found
at retrofit2.adapter.rxjava.OperatorMapResponseToBodyOrError$1.onNext(OperatorMapResponseToBodyOrError.java:43)
at retrofit2.adapter.rxjava.OperatorMapResponseToBodyOrError$1.onNext(OperatorMapResponseToBodyOrError.java:38)
at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$RequestArbiter.request(RxJavaCallAdapterFactory.java:173)
at rx.internal.operators.OperatorSubscribeOn$1$1$1.request(OperatorSubscribeOn.java:80)
at rx.Subscriber.setProducer(Subscriber.java:211)
at rx.internal.operators.OperatorSubscribeOn$1$1.setProducer(OperatorSubscribeOn.java:76)
at rx.Subscriber.setProducer(Subscriber.java:205)
at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$CallOnSubscribe.call(RxJavaCallAdapterFactory.java:152)
at retrofit2.adapter.rxjava.RxJavaCallAdapterFactory$CallOnSubscribe.call(RxJavaCallAdapterFactory.java:138)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
at rx.Observable.unsafeSubscribe(Observable.java:10151)
at rx.internal.operators.OperatorSubscribeOn$1.call(OperatorSubscribeOn.java:94)
at rx.internal.schedulers.CachedThreadScheduler$EventLoopWorker$1.call(CachedThreadScheduler.java:228)
at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:55)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:428)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:272)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
at java.lang.Thread.run(Thread.java:761)
Caused by: com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $
E/AndroidRuntime: at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:224)
at com.google.gson.Gson.fromJson(Gson.java:887)
at com.google.gson.Gson.fromJson(Gson.java:852)
at com.google.gson.Gson.fromJson(Gson.java:801)
at com.google.gson.Gson.fromJson(Gson.java:773)
at com.learn2crack.fragments.LoginFragment.handleError(LoginFragment.java:157)
at com.learn2crack.fragments.LoginFragment.-com_learn2crack_fragments_LoginFragment-mthref-1(LoginFragment.java:126)
at com.learn2crack.fragments.LoginFragment$-void_loginProcess_java_lang_String_email_java_lang_String_password_LambdaImpl1.call(LoginFragment.java)
at rx.internal.util.ActionSubscriber.onError(ActionSubscriber.java:44)
at rx.observers.SafeSubscriber._onError(SafeSubscriber.java:152)
at rx.observers.SafeSubscriber.onError(SafeSubscriber.java:115)
at rx.internal.operators.OperatorSubscribeOn$1$1.onError(OperatorSubscribeOn.java:59)
at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.checkTerminated(OperatorObserveOn.java:276)
at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.call(OperatorObserveOn.java:219)
at rx.android.schedulers.LooperScheduler$ScheduledAction.run(LooperScheduler.java:107)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
Caused by: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $
at com.google.gson.stream.JsonReader.beginObject(JsonReader.java:385)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:213)
at com.google.gson.Gson.fromJson(Gson.java:887)
at com.google.gson.Gson.fromJson(Gson.java:852)
at com.google.gson.Gson.fromJson(Gson.java:801)
at com.google.gson.Gson.fromJson(Gson.java:773)
at com.learn2crack.fragments.LoginFragment.handleError(LoginFragment.java:157)
at com.learn2crack.fragments.LoginFragment.-com_learn2crack_fragments_LoginFragment-mthref-1(LoginFragment.java:126)
at com.learn2crack.fragments.LoginFragment$-void_loginProcess_java_lang_String_email_java_lang_String_password_LambdaImpl1.call(LoginFragment.java)
at rx.internal.util.ActionSubscriber.onError(ActionSubscriber.java:44)
at rx.observers.SafeSubscriber._onError(SafeSubscriber.java:152)
at rx.observers.SafeSubscriber.onError(SafeSubscriber.java:115)
at rx.internal.operators.OperatorSubscribeOn$1$1.onError(OperatorSubscribeOn.java:59)
at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.checkTerminated(OperatorObserveOn.java:276)
at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.call(OperatorObserveOn.java:219)
at rx.android.schedulers.LooperScheduler$ScheduledAction.run(LooperScheduler.java:107)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
Application terminated.
package com.learn2crack.fragments;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.design.widget.Snackbar;
import android.support.design.widget.TextInputLayout;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.TextView;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.learn2crack.MainActivity;
import com.learn2crack.ProfileActivity;
import com.learn2crack.R;
import com.learn2crack.model.Response;
import com.learn2crack.model.User;
import com.learn2crack.network.NetworkUtil;
import com.learn2crack.socialmediaapp.mainMenuPage;
import com.learn2crack.socialmediaapp.signUpRequirementsPage;
import com.learn2crack.socialmediaapp.welcomePage;
import java.io.IOException;
import retrofit2.adapter.rxjava.HttpException;
import rx.android.schedulers.AndroidSchedulers;
import rx.schedulers.Schedulers;
import rx.subscriptions.CompositeSubscription;
import static com.learn2crack.utils.Validation.validateEmail;
import static com.learn2crack.utils.Validation.validateFields;
public class RegisterFragment extends Fragment{
public static final String TAG = RegisterFragment.class.getSimpleName();
private EditText mEtName;
private EditText mEtEmail;
private EditText mEtPassword;
private Button mBtRegister;
private TextView mTvLogin;
private TextInputLayout mTiName;
private TextInputLayout mTiEmail;
private TextInputLayout mTiPassword;
private ProgressBar mProgressbar;
private CompositeSubscription mSubscriptions;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_register,container,false);
mSubscriptions = new CompositeSubscription();
initViews(view);
return view;
}
private void initViews(View v) {
mEtName = (EditText) v.findViewById(R.id.et_name);
mEtEmail = (EditText) v.findViewById(R.id.et_email);
mEtPassword = (EditText) v.findViewById(R.id.et_password);
mBtRegister = (Button) v.findViewById(R.id.btn_register);
mTvLogin = (TextView) v.findViewById(R.id.tv_login);
mTiName = (TextInputLayout) v.findViewById(R.id.ti_name);
mTiEmail = (TextInputLayout) v.findViewById(R.id.ti_email);
mTiPassword = (TextInputLayout) v.findViewById(R.id.ti_password);
mProgressbar = (ProgressBar) v.findViewById(R.id.progress);
mBtRegister.setOnClickListener(view -> register());
mTvLogin.setOnClickListener(view -> goToLogin());
}
private void register() {
setError();
String name = mEtName.getText().toString();
String email = mEtEmail.getText().toString();
String password = mEtPassword.getText().toString();
int err = 0;
if (!validateFields(name)) {
err++;
mTiName.setError("Name should not be empty !");
}
if (!validateEmail(email)) {
err++;
mTiEmail.setError("Email should be valid !");
}
if (!validateFields(password)) {
err++;
mTiPassword.setError("Password should not be empty !");
}
if (err == 0) {
User user = new User();
user.setName(name);
user.setEmail(email);
user.setPassword(password);
mProgressbar.setVisibility(View.VISIBLE);
registerProcess(user);
/* Intent signUpContinueIntent;
signUpContinueIntent = new Intent(RegisterFragment.this, signUpRequirementsPage.class);
startActivity(signUpContinueIntent);*/
} else {
showSnackBarMessage("Enter Valid Details !");
}
}
private void setError() {
mTiName.setError(null);
mTiEmail.setError(null);
mTiPassword.setError(null);
}
private void registerProcess(User user) {
mSubscriptions.add(NetworkUtil.getRetrofit().register(user)
.observeOn(AndroidSchedulers.mainThread())
.subscribeOn(Schedulers.io())
.subscribe(this::handleResponse,this::handleError));
}
private void handleResponse(Response response) {
mProgressbar.setVisibility(View.GONE);
showSnackBarMessage(response.getMessage());
}
private void handleError(Throwable error) {
mProgressbar.setVisibility(View.GONE);
if (error instanceof HttpException) {
Gson gson = new GsonBuilder().create();
try {
String errorBody = ((HttpException) error).response().errorBody().string();
Response response = gson.fromJson(errorBody,Response.class);
showSnackBarMessage(response.getMessage());
} catch (IOException e) {
e.printStackTrace();
}
} else {
showSnackBarMessage("Network Error !");
}
}
private void showSnackBarMessage(String message) {
if (getView() != null) {
Snackbar.make(getView(),message,Snackbar.LENGTH_SHORT).show();
}
}
private void goToLogin(){
FragmentTransaction ft = getFragmentManager().beginTransaction();
LoginFragment fragment = new LoginFragment();
ft.replace(R.id.fragmentFrame, fragment, LoginFragment.TAG);
ft.commit();
}
@Override
public void onDestroy() {
super.onDestroy();
mSubscriptions.unsubscribe();
}
}