I was doing this tutorial on Android and Firebase but for some reason when I try to register a new driver it doesn't interact with Firebase at all. Though it does show it's connected to Firebase:
I have downgraded my API to 26 because of this error:
Google Play services out of date. Requires 9256000 but found 9080470.
So I installed Genymotion to solve this issue as advised by contributors on this platform.
But it still doesn't communicate with Firebase. It returns 0 Errors and yet doesn't work.
I've installed GenyMotion but every time I try to run on it's devices it keeps crashing.
public class DriverLoginActivity extends AppCompatActivity {
private EditText mEmail, mPassword;
private Button mLogin, mRegistration;
private FirebaseAuth mAuth;
private FirebaseAuth.AuthStateListener firebaseAuthListener;
private static final String TAG = "Test";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_driver_login);
mAuth = FirebaseAuth.getInstance();
firebaseAuthListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
if(user!=null){
Intent intent = new Intent(DriverLoginActivity.this,
MainActivity.class);
startActivity(intent);
finish();
return;
}
}
};
mEmail = findViewById(R.id.email);
mPassword = findViewById(R.id.password);
mLogin = findViewById(R.id.login);
mRegistration = findViewById(R.id.registration);
mRegistration.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
final String email = mEmail.getText().toString();
final String password = mPassword.getText().toString();
mAuth.createUserWithEmailAndPassword(email,
password).addOnCompleteListener(DriverLoginActivity.this, new
OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if(!task.isSuccessful()){
Toast.makeText(DriverLoginActivity.this, "sign up
error", Toast.LENGTH_SHORT).show();
}else {
String user_id = mAuth.getCurrentUser().getUid();
DatabaseReference current_user_db =
FirebaseDatabase.getInstance().getReference().child("Users").child("Drivers").child(user_id);
current_user_db.setValue(true);
}
}
});
}
});
mLogin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
final String email = mEmail.getText().toString();
final String password = mPassword.getText().toString();
mAuth.signInWithEmailAndPassword(email, password).addOnCompleteListener(DriverLoginActivity.this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
Log.d(TAG, "createUserWithEmail:onComplete:" + task.isSuccessful());
if(!task.isSuccessful()){
Log.d(TAG, "onComplete: Failed=" + task.getException().getMessage());
Toast.makeText(DriverLoginActivity.this, "sign up error", Toast.LENGTH_SHORT).show();
}
}
});
}
});
}
@Override
protected void onStart() {
super.onStart();
mAuth.addAuthStateListener(firebaseAuthListener);
}
@Override
protected void onStop() {
super.onStop();
mAuth.removeAuthStateListener(firebaseAuthListener);
}
}
Here are my build.gradle (app)
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
defaultConfig {
applicationId "ke.co.wafalmelogistics.wafalme"
minSdkVersion 17
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
implementation 'com.google.gms:google-services:3.1.0'
implementation 'com.google.firebase:firebase-core:11.6.0'
implementation 'com.google.firebase:firebase-database:11.6.0'
implementation 'com.google.firebase:firebase-auth:11.6.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
}
apply plugin: 'com.google.gms.google-services'
build.gradle (module)
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.0'
classpath 'com.google.gms:google-services:3.1.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
And here is the Error I keep getting when I try to run the app on GenyMotion;
--------- beginning of crash E/AndroidRuntime: FATAL EXCEPTION: main Process: ke.co.wafalmelogistics.wafalme, PID: 1640 java.lang.NullPointerException: Attempt to invoke virtual method 'com.google.android.gms.tasks.Task com.google.android.gms.common.api.GoogleApi.zzb(com.google.android.gms.common.api.internal.zzdf)' on a null object reference at com.google.android.gms.internal.zzdtp.zzb(Unknown Source) at com.google.android.gms.internal.zzdtw.zza(Unknown Source) at com.google.firebase.auth.FirebaseAuth.createUserWithEmailAndPassword(Unknown Source) at ke.co.wafalmelogistics.wafalme.DriverLoginActivity$2.onClick(DriverLoginActivity.java:61) at android.view.View.performClick(View.java:5637) at android.view.View$PerformClick.run(View.java:22429) 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:6119) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
ItI am a learner, any help is appreciated.
