My application crashes while opening "Room Activity". I have attached my manifest as well as both the activities and logcat result. I don't understand what's the real problem here. I have made changes according to the articles online but still getting same error.
Android Mainfest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.tictactoe">
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.TicTacToe">
<activity android:name=".OnlineGameActivity"></activity>
<activity android:name=".RoomActivity" />
<activity android:name=".FriendsActivity" />
<activity android:name=".ComputerActivity" />
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Room Activity File
package com.example.tictactoe
import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Toast
import com.google.firebase.auth.FirebaseAuth
import com.google.firebase.database.FirebaseDatabase
import kotlinx.android.synthetic.main.activity_room.*
class RoomActivity : AppCompatActivity() {
var mAuth: FirebaseAuth?=null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_room)
mAuth = FirebaseAuth.getInstance()
buLoginEvent()
}
fun buLoginEvent(){
LoginToFirebase(email.text.toString(), password.text.toString());
}
fun LoginToFirebase(email:String, password:String){
var database = FirebaseDatabase.getInstance()
var myRef = database?.reference
var currentUser = mAuth!!.currentUser
mAuth!!.createUserWithEmailAndPassword(email,password)
.addOnCompleteListener(this){
task->
if(task.isSuccessful){
Toast.makeText(applicationContext,"Successfull Login", Toast.LENGTH_LONG).show()
//saving in database
myRef.child("Users").child(splitString(currentUser!!.email.toString())).setValue(
currentUser!!.uid
)//creating current node iin relatime database
LoadMain()
}
else{
Toast.makeText(applicationContext,"Failed Login", Toast.LENGTH_LONG).show()
}
}
}
override fun onStart() {//2nd time when the application is started then call this method
super.onStart()
LoadMain()
}
fun LoadMain(){
var currentUser = mAuth!!.currentUser
if(currentUser!=null) {// doing this only when the user is not null
var intent = Intent(this, OnlineGameActivity::class.java)
intent.putExtra("email", currentUser!!.email)
intent.putExtra("uid", currentUser!!.uid)
startActivity(intent)
finish()
}
else{
}
}
fun splitString(str:String):String{
var split=str.split("@")
return split[0]
}
}
OnlineGameActivity
package com.example.tictactoe
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.View
import android.widget.Button
import com.google.firebase.analytics.FirebaseAnalytics
import com.google.firebase.database.DataSnapshot
import com.google.firebase.database.DatabaseError
import com.google.firebase.database.FirebaseDatabase
import com.google.firebase.database.ValueEventListener
import kotlinx.android.synthetic.main.activity_online_game.*
import kotlin.collections.HashMap
class OnlineGameActivity : AppCompatActivity() {
//database instance
var myEmail:String?=null
private var mFirebaseAnalytics: FirebaseAnalytics?=null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_online_game)
mFirebaseAnalytics= FirebaseAnalytics.getInstance(this)
IncommingCalls()
}
protected fun buClick(view: View){
val buSelected= view as Button
var cellID=0
when(buSelected.id){
R.id.bu1-> cellID=1
R.id.bu2-> cellID=2
R.id.bu3-> cellID=3
R.id.bu4-> cellID=4
R.id.bu5-> cellID=5
R.id.bu6-> cellID=6
R.id.bu7-> cellID=7
R.id.bu8-> cellID=8
R.id.bu9-> cellID=9
}
// Toast.makeText(this,"ID:" cellID, Toast.LENGTH_LONG).show()
var database = FirebaseDatabase.getInstance()
var myRef = database?.reference
myRef.child("PlayerOnline").child(sessionID!!).child(cellID!!.toString()).setValue(myEmail)
}
var player1= java.util.ArrayList<Int>()
var player2= java.util.ArrayList<Int>()
var ActivePlayer=1
fun PlayGame(cellID:Int,buSelected:Button){
if(ActivePlayer==1){
buSelected.text="X"
//buSelected.setBackgroundResource(R.color.blue)
player1.add(cellID)
ActivePlayer=2
}else{
buSelected.text="O"
// buSelected.setBackgroundResource(R.color.darkgreen)
player2.add(cellID)
ActivePlayer=1
}
buSelected.isEnabled=false
CheckWiner()
}
fun CheckWiner(){
var winer=-1
// row 1
if(player1.contains(1) && player1.contains(2) && player1.contains(3)){
winer=1
}
if(player2.contains(1) && player2.contains(2) && player2.contains(3)){
winer=2
}
// row 2
if(player1.contains(4) && player1.contains(5) && player1.contains(6)){
winer=1
}
if(player2.contains(4) && player2.contains(5) && player2.contains(6)){
winer=2
}
// row 3
if(player1.contains(7) && player1.contains(8) && player1.contains(9)){
winer=1
}
if(player2.contains(7) && player2.contains(8) && player2.contains(9)){
winer=2
}
// col 1
if(player1.contains(1) && player1.contains(4) && player1.contains(7)){
winer=1
}
if(player2.contains(1) && player2.contains(4) && player2.contains(7)){
winer=2
}
// col 2
if(player1.contains(2) && player1.contains(5) && player1.contains(8)){
winer=1
}
if(player2.contains(2) && player2.contains(5) && player2.contains(8)){
winer=2
}
// col 3
if(player1.contains(3) && player1.contains(6) && player1.contains(9)){
winer=1
}
if(player2.contains(3) && player2.contains(6) && player2.contains(9)){
winer=2
}
if( winer != -1){
if (winer==1){
android.widget.Toast.makeText(this," Player 1 win the game", android.widget.Toast.LENGTH_LONG).show()
}else{
android.widget.Toast.makeText(this," Player 2 win the game", android.widget.Toast.LENGTH_LONG).show()
}
}
}
fun AutoPlay(cellID:Int){
var buSelect:Button?
when(cellID){
1-> buSelect=bu1
2-> buSelect=bu2
3-> buSelect=bu3
4-> buSelect=bu4
5-> buSelect=bu5
6-> buSelect=bu6
7-> buSelect=bu7
8-> buSelect=bu8
9-> buSelect=bu9
else->{
buSelect=bu1
}
}
PlayGame(cellID,buSelect)
}
protected fun buRequestEvent(view:android.view.View){
var userDemail=etEmail!!.text.toString()
var database = FirebaseDatabase.getInstance()
var myRef = database?.reference
myRef.child("Users").child(SplitString(userDemail)).child("Request").push().setValue(myEmail)
PlayerOnline(SplitString(myEmail!!) SplitString(userDemail)) // husseinjena
PlayerSymbol="X"
}
protected fun buAcceptEvent(view:android.view.View){
var database = FirebaseDatabase.getInstance()
var myRef = database?.reference
var userDemail=etEmail!!.text.toString()//push will create another node with random id
myRef.child("Users").child( SplitString(userDemail)).child("Request").push().setValue(myEmail)
PlayerOnline(SplitString(userDemail) SplitString(myEmail!!)) //husseinjena
PlayerSymbol="O"
}
var sessionID:String?=null
var PlayerSymbol:String?=null
fun PlayerOnline(sessionID:String){
this.sessionID=sessionID
var database = FirebaseDatabase.getInstance()
var myRef = database?.reference
myRef.child("PlayerOnline").removeValue()
myRef.child("PlayerOnline").child(sessionID)
.addValueEventListener(object:ValueEventListener{
override fun onDataChange(dataSnapshot: DataSnapshot) {
try{
player1.clear()
player2.clear()
val td=dataSnapshot!!.value as HashMap<String,Any>
if(td!=null){
var value:String
for (key in td.keys){
value= td[key] as String
if(value!= myEmail){
ActivePlayer= if(PlayerSymbol==="X") 1 else 2
}else{
ActivePlayer= if(PlayerSymbol==="X") 2 else 1
}
AutoPlay(key.toInt())
}
}
}catch (ex:Exception){}
}
override fun onCancelled(p0: DatabaseError) {
}
})
}
var number=0
fun IncommingCalls(){
var database = FirebaseDatabase.getInstance()
var myRef = database?.reference
myRef.child("Users").child(SplitString(myEmail!!)).child("Request")
.addValueEventListener(object:ValueEventListener{
override fun onDataChange(dataSnapshot: DataSnapshot) {
try{
val td=dataSnapshot!!.value as HashMap<String,Any>
if(td!=null){
var value:String
for (key in td.keys){
value= td[key] as String
etEmail.setText(value)
val notifyme=Notifications()
notifyme.Notify(applicationContext,value "want to play tic tac toe",number)
number
myRef.child("Users").child(SplitString(myEmail!!)).child("Request").setValue(true)
break
}
}
}catch (ex:Exception){}
}
override fun onCancelled(p0: DatabaseError) {
}
})
}
fun SplitString(str:String):String{
var split=str.split("@")
return split[0]
}
}
Error that I am getting on logcat
2022-01-19 12:45:03.601 30370-30370/com.example.tictactoe E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.tictactoe, PID: 30370
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.tictactoe/com.example.tictactoe.RoomActivity}: java.lang.IllegalArgumentException: Given String is empty or null
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3616)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3780)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2251)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:233)
at android.app.ActivityThread.main(ActivityThread.java:8068)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:631)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:978)
Caused by: java.lang.IllegalArgumentException: Given String is empty or null
at com.google.android.gms.common.internal.Preconditions.checkNotEmpty(com.google.android.gms:play-services-basement@@18.0.0:2)
at com.google.firebase.auth.FirebaseAuth.createUserWithEmailAndPassword(com.google.firebase:firebase-auth@@21.0.1:1)
at com.example.tictactoe.RoomActivity.LoginToFirebase(RoomActivity.kt:33)
at com.example.tictactoe.RoomActivity.buLoginEvent(RoomActivity.kt:23)
at com.example.tictactoe.RoomActivity.onCreate(RoomActivity.kt:19)
at android.app.Activity.performCreate(Activity.java:8006)
at android.app.Activity.performCreate(Activity.java:7990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1329)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3589)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3780)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2251)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:233)
at android.app.ActivityThread.main(ActivityThread.java:8068)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:631)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:978)
CodePudding user response：
As you can see in the logs, your email or password is null or empty when you call createUserWithEmailAndPassword.
Take look at the logs, and try to debug your code to see if the values for email and password not null or empty.
Caused by: java.lang.IllegalArgumentException: Given String is empty or null
at com.google.android.gms.common.internal.Preconditions.checkNotEmpty(com.google.android.gms:play-services-basement@@18.0.0:2)
at com.google.firebase.auth.FirebaseAuth.createUserWithEmailAndPassword(com.google.firebase:firebase-auth@@21.0.1:1)
CodePudding user response：
As I get your stacktrace, you are passing empty strings into createUserWithEmailAndPassword method. It seems it doesn't allow that.
I recommend you to add checks into buLoginEvent method:
fun buLoginEvent(){
val emailString = email.text.toString()
val passwordString = password.text.toString()
if(emailString.isNotEmpty() && passwordString.isNotEmpty()) {
LoginToFirebase(emailString, passwordString);
} else {
//show error message to user
}
}
CodePudding user response：
mAuth!!.createUserWithEmailAndPassword(email,password)maybe your email or password is null.
Caused by: java.lang.IllegalArgumentException: Given String is empty or null
at com.google.android.gms.common.internal.Preconditions.checkNotEmpty(com.google.android.gms:play-services-basement@@18.0.0:2)
at com.google.firebase.auth.FirebaseAuth.createUserWithEmailAndPassword(com.google.firebase:firebase-auth@@21.0.1:1)