Simple Login App using Database Tutorial (PART 8) - Retrieving User Information (Android Studio 3.0)

In this video, we will retrieve the user profile information from the Firebase Database and display it in a profile activity using the latest Android Studio 3.0! Also, we see how you can change password and email too!
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Next Video: Updating user info from the database: • Simple Login App using...
Previous Videos:
Retrieving data from the database (PART 8) link: • Simple Login App using...
Uploading data to the database (PART 7) link: • Simple Login App Using...
Forgot Password (PART 6) link: • Simple Login App Using...
Email Verification (PART 5) link: • Simple Login App Using...
Logout Implementation (PART4) link: • Simple Login App Using...
Login Implementation (PART3) link: • Simple Login App using...
Registration Activity (PART2) link: • Simple Login App using...
Firebase Setup & Registration Design (PART1) link: • Simple Login App using...
Github Code Link: github.com/Dhe...
Website Links: firebase.googl...
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**** Other Tutorial Videos ******
1) How to make a splash screen app - • Simple Splash Screen A...
2) How to make a simple login app - • Simple Login App Tutor...
3) How to make a simple timetable app - • Simple Timetable App T...
4) How to install/upgrade to android studio 3.0 - • How to Install/Upgrade...
5) Understanding JSON - • How to Upload Data to ...
6) Cloud Computing - • Introduction to Micros...
7) How to make a Simple Calculator App - • Calculator App Tutoria...
8) Simple Login App Using Database - • Simple Login App using...
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Keywords:
Retrieving Data from Firebase Database
Retrieving User data from FIrebase Database
Retrieving User profile from FIrebase Database
How to create a profile activity
How to make a user profile app
Android Studio 3.0
Android Studio 2.3.3
Simple Login App
Professor DK
Simple Timetable App
Tutorials
Android Tutorials for Beginners

[@ProfessorDK]

The app and code in the video are tested and perfectly working. However, I have seen that some of you are facing difficulties and getting some errors, so here is a beginners guide to debugging: 1) Error: Null object reference Solution: This always means you have given the wrong XML ID, just correct it 2) Error: User Credentials not sent to Firebase Solution: Check if you have added all dependencies else do the following: In Android Studio, go to Tools > Firebase. Click on it. A new tab will open. Click on Authentication > More Info > Email and Password Authentication Link. Another tab will open. Check if the first step shows connected to the database. If not, just click on it and you should be asked for Firebase credentials and on entering that, you will get connected :) 3) Error: App is crashing Solution: Check your logcat section present at the bottom of Android Studio, it will tell you where you have made the error or what caused the error. Just go to that line then and debug. 4) Error: App crashing in emulator: This happens because your emulator doesn't have the latest google play store services. Either update play store or just run it on normal phone Also, some things to note: 1) Every new user must have unique email ID 2) The password length must be more than 8 characters long 3) Internet must be ON Hope this helped everyone :)

[@ramachandranbaskar799]

hi sir, it does not view on Activity?

[@rishabhgupta5460]

@@ramachandranbaskar799 same problem

[@sheong9999]

Hi Sir , when i press my profile and my app will crashing , can help you me ?

[@rwill.7313]

Excellent! It works perfectly for me!

[@atharvapatkar9674]

My app is crashing before even it starts running, I mean it gets installed but when it starts to open the app it crashes it started after I performed part 8 before it was working all fine... please help. It's not prompting any error in build process, that means its not its a logical error but I cant pinpoint where

[@ankitnayak9151]

Atharva Patkar yes same here, how to deal with that.

[@jabsdev6897]

Just check it wisely. Professor DK just commented some of the line of code on the Github. Be aware.

[@len5120]

sir i'm really thankful for the tutorial with proper explanation of the code (why we required ,what will do),everything is clear . Sir give tutorial with one objective on developing an app.

[@ProfessorDK]

Glad you liked it. Sure will do :)

[@Build-with-kalgi]

DatabaseReference databaseReference = firebaseDatabase.getReference(firebaseAuth.getUid()); is line me error aa rahi he jab logout karte he . app stop opening something like that. aur reason aisa kuch de raha he ki jab logout press karte to firebase me se signout ho jata he to uper vale line me firebaseAuth.getUid() is me null ajayega

[@shivamgautam3115]

Hello Professor I am facing the error in above comment

[@rcpangeran]

Great video as always.. thaks for your sharing

[@klkdz]

hi, can I know why my profile page doesn't show the image? is there any possible error from my side? the project is working perfectly with no error

[@denisamarginean4801]

Hi! I am trying to implement this, but the app crash and I get this errors: Attempt to invoke virtual method 'java.lang.String com.example.nuthealth.User.getAge()' on a null object reference at com.example.nuthealth.AccountActivity$1.onDataChange Could you give me some help?

[@gauravsaini9226]

sir, its showing constructor"userProfile " never used. profileActivity file is not reading the userProfile class properly, what should i do?

[@manalbenchrif2961]

when i click data in fire base i don't see anything i see just a video introducing firebase any help?

[@gauravbhandari4386]

My App is working fine but there is a glitch regarding the database retrieval. I have created two Profile Section in my App, one in the menu.xml & second in the navigation drawer. But whenever i'm clicking on the Profile Section, the page opens up for like 4-5 seconds before it crashes down. It is not showing any data from the database rather the following error is shown in my logcat. FATAL EXCEPTION: main Process: com.example.android.amihost, PID: 9995 java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.example.android.amihost.UserProfile.getUserName()' on a null object reference at com.example.android.amihost.ProfileActivity$1.onDataChange(ProfileActivity.java:41) at com.google.android.gms.internal.zzegf.zza(Unknown Source) at com.google.android.gms.internal.zzeia.zzbyc(Unknown Source) at com.google.android.gms.internal.zzeig.run(Unknown Source) at android.os.Handler.handleCallback(Handler.java:746) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5443) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)

[@gauravbhandari4386]

Whosoever is facing this error has to just Check if their UID in the database tab is same as in their Authentication Tab. If not, then delete the previous Email Account and Sign Up in the app again. This worked for me. Check for your own.

[@shivamgautam3115]

@@gauravbhandari4386 Hi I have done the same but it doesn't help me.Can you please elaborate me in this..

[@onlineoffersalert5427]

Hi professor, I have created till 9th part till (Updating User Info) as per link your codes as it is. but when i run it my fire base data not showing in profile page and it not staying and automatically get out to Secoundactivity page Error Showing *(Unfortunately, this app has stopped) link this and so many button Error also showing like this... please provide me the solution to it.

[@punjabweb]

yes userProfile data is not being stored in Database. only authencation is working. There is some fault in this tutorial. Prof DK himself is just a 22 year old guy.. he is no expert. He is just little better than beginners.

[@yahya-imammunir7381]

Firstly, remove the default constructor and all the getter and setter methods from UserProfile class. That will allow your data to be stored inside your database. Secondly, watch this tutorial( kzbin.info/www/bejne/jF7dZIxuqJhknbs )to be able to display your Profile details. I hope this helps.

[@yahya-imammunir7381]

@@punjabweb The later part of your comment is demotivating. Firstly, remove the default constructor and all the getter and setter methods from UserProfile class. That will allow your data to be stored inside your database. Secondly, watch this tutorial( kzbin.info/www/bejne/jF7dZIxuqJhknbs )to be able to display your Profile details

[@kali-fr]

Thank you teacher. The menu is not showing on my user profile activity. How do I add it on this activity? Can we create a function of method that we can call from an activity when we need the menu? thanks

[@punjabweb]

Hello DK if I have to insert data in different categories like fruits, vegetables and bakery, then what should be the insert code?

[@noorulain8463]

if we have multiple users and want to get login with firebase id we dont want to add any radio group or spinner for specifying...how can i implement the logic?

[@kanamachi9185]

java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.example.flybuy.Model.Userprofile.getName()' on a null object reference at com.example.flybuy.Fragment.ProfileFragment$1.onDataChange(ProfileFragment.java:82) can you please solve this why wrong. i can understand and stack here

[@vikramnayak6441]

sir i did not disabled thee sendemailverification,but apart from that i have coded exacly the same as you did.but my app is crashing.

[@ProfessorDK]

Please post the logcat error if possible so I can know why it's crashing :)

[@ankitnayak9151]

Vikram Nayak same here, after implementing getter setter, just comment it out app will work fine and also don’t forget to comment set text in profile activity.

[@Combatforce922]

Sir do videos on how to implement maps in android app and post it.

[@muhammadwaseemasghar2104]

my app is running successfully on my android device which is installed during build but when i send this app to another device via bluetooth/whtastpp from my device it does't run on this device show App not installed error....any body can help plz

[@fanilaali1049]

Hello ,can you please help me to solve this error cannot find symbol Name.setText("Email: "+ userclass.getName()); ^ symbol: variable Name I have User class where I have Name as a parameter but it gives me error ,I tried to make my parameter static but it still gives error ,Please tell me that how can I solve this error.

[@lzygyz814]

Thank you man your video is the best

[@NurulHuda-jv8xh]

is email verify is mandatory for profile information ?

[@zaidbargir8545]

How I can retrieve image and text in recyclerview ?????????

[@okashawaseem9205]

hello how we can do this by using SQLite Database?

[@henrypeters9263]

I want to make the login app without the profile pic how would I delet this part of the code

[@anupambasak4223]

Sir I uploaded my data and it's showing in Authentication as well as in Database but in Profile Activity's Profile menu it's showing NULL. Please Sir solve this otherwise I can't proceed.

[@sudharmajain2045]

Sir please make a video on fetching all details of a multiple user and then show in list view.

[@nishanthtb2080]

Yes please make a video on that using the same project please

[@ayeshivlogs09]

yes

[@uzzalmondal7812]

vaia every day i want your Video

[@mundabetimabuku7708]

great tutorials am enjoying..please help me i want to retrieve my data without using firebase getUid as my database reference

[@sumas562]

DK sir , plz help me in how can I do double user login such that one user goes to first page and other different page . How can I do different tables in Firebase

[@hasnainsial7511]

Hye bro, I am not crating User profile activity but instead i will give the info into the firebase directly, I just want to retrieve the info, So the problem is you in Ondatachange you used Userprofile so what should i use instead ??

[@ProfessorDK]

Based on the fields u enter manually in database create a Java class like Users profile and retrieve the data :)

[@hasnainsial7511]

i want to add GPA SGPA and Name, So i make a profile user class and add these three like you did and make getter and setter

[@hasnainsial7511]

I haven't created registration activity at all, I have just created login activity, So do you think it will work

[@hasnainsial7511]

I just want to retrieve the user data which i have manually added into Profile activity, Plzz guide me bro :)

[@leehoongyaen6331]

hi professor, i has an error after connected to the firebase. Can i know how to solve it? Error- Failed to resolve: firebase-auth-15.0.0

[@rajuar9889]

PROBLEM PROBLEM PROBLEM PROBLEM brother it is all working but in tool menu it is not showing the firebase option

[@blueempoleon6507]

multitask service is not running because prop is false, so getInstance return null. Someone help

[@srt2431]

After implementing this I get .. error on logout option on menue

[@ameerhaical]

Don't forget to put break; after you do the startActivity

[@mrgpspoetry196]

Aikah thanks bro

[@codesimplifier1370]

@@ameerhaical Loved your comment bro, You SAVEDDDDD my life. Thank YOUUUUUU

[@sudharmajain2045]

Sir can you make video on , how to create dynamic fields means add multiple edittext box on button click and get all the values from that all dynamic fields. Please sir make it.

[@gautamgajra4725]

how to retrive value from firebase without any notifcation please explain it

[@AKSKMY]

For anyone who like me just revisited their project so reference or for fun do remember to login to Firebase console and reactivate your realtime database again. For some reason mine got deactivated after I think 2 years?

[@basanthkumarkoliwad5861]

Unable to retrieve data from the registration activity. The app crashes and shuts down immediately. Please I would require immediate assistance for this problem. Thank You

[@Vishnukumar-xu5vr]

Same problem bro i face..what u done the soln

[@chayanikagogoi605]

I am facing a problem while updating user data into database. Help.

[@whacker4321]

amazing videos !!!!

[@chakhna]

Sir plz make video how to show pic username and id in navigation drawer header.

[@pkerketta77]

In my case .getUid is not coming, it's giving error there

[@sidrayousaf2461]

Sir i found error of. setText in my profileActivity so how i can solve it?

[@rishabhgupta5460]

I got the same

[@punjabweb]

I got this error ... on ProfileActivity.java error: incompatible types: FirebaseDatabase cannot be converted to DatabaseReference how to resolve it.. ???

[@punjabweb]

I resolved this issue by updating databse dependencies and import database.-> in build gradle file import com.google.firebase.database.DatabaseReference; and in RegistrationActivity.java import com.google.firebase.database.DatabaseReference; But .. registration data only going to authentication and user age, name etc is not being stored in Realtime database? Some people say you can not store data directly to Realbase database without first logging in as an authenticated user. After login you can create your profile. Is it the case?

[@kamalabaikattimani6994]

Thanks❤ bro

[@sadisusalisu216]

After the data upload was successfully. then i followed this video now the app is crashing please help me out.

[@ProfessorDK]

Please post the logcat error so that I can help u better :)

[@sadisusalisu216]

04-15 15:13:40.203 8496-8496/ng.org.ddhub.kanoblooddonation D/ActivityThread: hoder:android.app.IActivityManager$ContentProviderHolder@2869c86e,provider,holder.Provider:android.content.ContentProviderProxy@23300b0f 04-15 15:13:40.246 8496-8496/ng.org.ddhub.kanoblooddonation W/ActivityThread: Application ng.org.ddhub.kanoblooddonation can be debugged on port 8100... 04-15 15:13:40.249 8496-8496/ng.org.ddhub.kanoblooddonation D/ActivityThread: installProvider: context.getPackageName()=ng.org.ddhub.kanoblooddonation 04-15 15:16:14.600 8496-8496/? I/Process: Sending signal. PID: 8496 SIG: 9

[@sadisusalisu216]

That is the message from Logcat

[@batoolali7636]

having the same error!!......SADISU SALISU have u found the solution?? help me

[@nandhakumar9737]

when i click slack link..it shows that "This invite link is no longer active."

[@ProfessorDK]

Link has been updated. You can join now :)

[@ishwarmeena6051]

Thank You Sir

[@asifiqbal1261]

Sir you Awesome. I have one request, can you please show, how to retrieve user profile inside a slide navigation view. Thank You

[@ProfessorDK]

Yes that's a good suggestion :)

[@garyaguilar1007]

professor DK i hope you see this. i have an error on the (firebaseAuth.getUid()); i cannot get the Uid please help me

[@017-yasararafatht6]

Put break statement in switch case. That's the problem arise in (firebaseAuth.getUid());

[@Mdirfan-lk1wx]

Sir my menu crashed

[@muzammilshaik1370]

Did you upload Part 9 and part 10??

[@ProfessorDK]

Not yet. Working on it, will be posted soon :)

[@sumas562]

Sir plz upload video for how to develop chat application in android studio using Firebase database

[@ProfessorDK]

Yes working on it, will be uploaded soon :)

[@sumas562]

Tq sir

[@sadisusalisu216]

Please Professor help me ALT +0 is not working I am stoped

[@jayedm3342]

select your text... then right click and then click generate...

[@nawazahmed4697]

if not working ALT+0 Just Click *Shift+ALT+0

[@yatindradhurwe7297]

App has been crash when i logout.... Help to fix it

[@ProfessorDK]

Could you post your logcat error?

[@saidur-rahman1]

I am facing the same issue here, please find my logcat report below: 05-08 14:13:21.771 25322-25322/? I/zygote64: Late-enabling -Xcheck:jni 05-08 14:13:22.058 25322-25322/com.example.saidurrahman.rev7_loginapp2 W/zygote64: Unsupported class loader 05-08 14:13:22.060 25322-25322/com.example.saidurrahman.rev7_loginapp2 W/zygote64: Skipping duplicate class check due to unsupported classloader 05-08 14:13:22.064 25322-25322/com.example.saidurrahman.rev7_loginapp2 W/DynamiteModule: Local module descriptor class for com.google.firebase.auth not found. 05-08 14:13:22.069 25322-25322/com.example.saidurrahman.rev7_loginapp2 W/DynamiteModule: Local module descriptor class for com.google.firebase.auth not found. 05-08 14:13:22.084 25322-25322/com.example.saidurrahman.rev7_loginapp2 I/BiChannelGoogleApi: [FirebaseAuth: ] No Fallback module; NOT setting up for lazy initialization 05-08 14:13:22.098 25322-25337/com.example.saidurrahman.rev7_loginapp2 W/DynamiteModule: Local module descriptor class for com.google.firebase.auth not found. 05-08 14:13:22.108 25322-25322/com.example.saidurrahman.rev7_loginapp2 D/FirebaseApp: com.google.firebase.crash.FirebaseCrash is not linked. Skipping initialization. 05-08 14:13:22.109 25322-25337/com.example.saidurrahman.rev7_loginapp2 I/FirebaseAuth: [FirebaseAuth:] Loading module via FirebaseOptions. 05-08 14:13:22.109 25322-25337/com.example.saidurrahman.rev7_loginapp2 I/FirebaseAuth: [FirebaseAuth:] Preparing to create service connection to gms implementation 05-08 14:13:22.175 25322-25322/com.example.saidurrahman.rev7_loginapp2 V/FA: Cancelling job. JobID: 322656585 05-08 14:13:22.180 25322-25322/com.example.saidurrahman.rev7_loginapp2 V/FA: Registered activity lifecycle callback 05-08 14:13:22.181 25322-25322/com.example.saidurrahman.rev7_loginapp2 I/FirebaseInitProvider: FirebaseApp initialization successful 05-08 14:13:22.182 25322-25322/com.example.saidurrahman.rev7_loginapp2 I/InstantRun: starting instant run server: is main process 05-08 14:13:22.207 25322-25340/com.example.saidurrahman.rev7_loginapp2 V/FA: Collection enabled 05-08 14:13:22.208 25322-25340/com.example.saidurrahman.rev7_loginapp2 V/FA: App package, google app id: com.example.saidurrahman.rev7_loginapp2, 1:818589852144:android:cffcf107c9278dfc 05-08 14:13:22.210 25322-25340/com.example.saidurrahman.rev7_loginapp2 I/FA: App measurement is starting up, version: 11910 05-08 14:13:22.210 25322-25340/com.example.saidurrahman.rev7_loginapp2 I/FA: To enable debug logging run: adb shell setprop log.tag.FA VERBOSE 05-08 14:13:22.211 25322-25340/com.example.saidurrahman.rev7_loginapp2 I/FA: To enable faster debug mode event logging run: adb shell setprop debug.firebase.analytics.app com.example.saidurrahman.rev7_loginapp2 05-08 14:13:22.211 25322-25340/com.example.saidurrahman.rev7_loginapp2 D/FA: Debug-level message logging enabled 05-08 14:13:22.247 25322-25340/com.example.saidurrahman.rev7_loginapp2 V/FA: Connecting to remote service 05-08 14:13:22.262 25322-25340/com.example.saidurrahman.rev7_loginapp2 V/FA: Connection attempt already in progress 05-08 14:13:22.266 25322-25322/com.example.saidurrahman.rev7_loginapp2 V/FA: onActivityCreated 05-08 14:13:22.460 25322-25340/com.example.saidurrahman.rev7_loginapp2 V/FA: Connection attempt already in progress 05-08 14:13:22.461 25322-25340/com.example.saidurrahman.rev7_loginapp2 V/FA: Activity resumed, time: 419176359 05-08 14:13:22.468 25322-25340/com.example.saidurrahman.rev7_loginapp2 I/FA: Tag Manager is not found and thus will not be used 05-08 14:13:22.473 25322-25340/com.example.saidurrahman.rev7_loginapp2 D/FA: Logging event (FE): screen_view(_vs), Bundle[{firebase_event_origin(_o)=auto, firebase_screen_class(_sc)=MainActivity, firebase_screen_id(_si)=4104369710303382162}] 05-08 14:13:22.475 25322-25344/com.example.saidurrahman.rev7_loginapp2 D/OpenGLRenderer: HWUI GL Pipeline 05-08 14:13:22.513 25322-25340/com.example.saidurrahman.rev7_loginapp2 V/FA: Connection attempt already in progress 05-08 14:13:22.548 25322-25344/com.example.saidurrahman.rev7_loginapp2 I/Adreno: QUALCOMM build : 8e59954, I0be83d0d26 Build Date : 09/22/17 OpenGL ES Shader Compiler Version: EV031.21.02.00 Local Branch : O17A Remote Branch : Remote Branch : Reconstruct Branch : 05-08 14:13:22.551 25322-25344/com.example.saidurrahman.rev7_loginapp2 D/vndksupport: Loading /vendor/lib64/hw/gralloc.msm8994.so from current namespace instead of sphal namespace. 05-08 14:13:22.557 25322-25344/com.example.saidurrahman.rev7_loginapp2 I/Adreno: PFP: 0x00000000, ME: 0x00000000 05-08 14:13:22.568 25322-25344/com.example.saidurrahman.rev7_loginapp2 I/zygote64: android::hardware::configstore::V1_0::ISurfaceFlingerConfigs::hasWideColorDisplay retrieved: 0 05-08 14:13:22.570 25322-25344/com.example.saidurrahman.rev7_loginapp2 I/OpenGLRenderer: Initialized EGL, version 1.4 05-08 14:13:22.570 25322-25344/com.example.saidurrahman.rev7_loginapp2 D/OpenGLRenderer: Swap behavior 2 05-08 14:13:22.635 25322-25344/com.example.saidurrahman.rev7_loginapp2 D/vndksupport: Loading /vendor/lib64/hw/[e-mail] from current namespace instead of sphal namespace. 05-08 14:13:22.636 25322-25344/com.example.saidurrahman.rev7_loginapp2 D/vndksupport: Loading /vendor/lib64/hw/gralloc.msm8994.so from current namespace instead of sphal namespace. 05-08 14:13:22.674 25322-25340/com.example.saidurrahman.rev7_loginapp2 D/FA: Connected to remote service 05-08 14:13:22.675 25322-25340/com.example.saidurrahman.rev7_loginapp2 V/FA: Processing queued up service tasks: 4 05-08 14:13:22.695 25322-25322/com.example.saidurrahman.rev7_loginapp2 V/View: dispatchProvideAutofillStructure(): not laid out, ignoring 0 children of 1073741834 05-08 14:13:22.699 25322-25322/com.example.saidurrahman.rev7_loginapp2 I/AssistStructure: Flattened final assist data: 3320 bytes, containing 1 windows, 12 views 05-08 14:13:27.808 25322-25340/com.example.saidurrahman.rev7_loginapp2 V/FA: Inactivity, disconnecting from the service 05-08 14:13:39.835 25322-25327/com.example.saidurrahman.rev7_loginapp2 I/zygote64: Do partial code cache collection, code=29KB, data=27KB 05-08 14:13:39.836 25322-25327/com.example.saidurrahman.rev7_loginapp2 I/zygote64: After code cache collection, code=29KB, data=27KB 05-08 14:13:39.836 25322-25327/com.example.saidurrahman.rev7_loginapp2 I/zygote64: Increasing code cache capacity to 128KB 05-08 14:14:00.134 25322-25327/com.example.saidurrahman.rev7_loginapp2 I/zygote64: Do partial code cache collection, code=47KB, data=46KB 05-08 14:14:00.134 25322-25327/com.example.saidurrahman.rev7_loginapp2 I/zygote64: After code cache collection, code=47KB, data=46KB 05-08 14:14:00.134 25322-25327/com.example.saidurrahman.rev7_loginapp2 I/zygote64: Increasing code cache capacity to 256KB 05-08 14:14:00.135 25322-25327/com.example.saidurrahman.rev7_loginapp2 I/zygote64: Compiler allocated 6MB to compile void android.view.ViewRootImpl.performTraversals() 05-08 14:14:21.724 25322-25386/com.example.saidurrahman.rev7_loginapp2 V/FA: Recording user engagement, ms: 59263 05-08 14:14:21.727 25322-25386/com.example.saidurrahman.rev7_loginapp2 V/FA: Connecting to remote service 05-08 14:14:21.734 25322-25386/com.example.saidurrahman.rev7_loginapp2 V/FA: Activity paused, time: 419235621 05-08 14:14:21.741 25322-25386/com.example.saidurrahman.rev7_loginapp2 D/FA: Logging event (FE): user_engagement(_e), Bundle[{firebase_event_origin(_o)=auto, engagement_time_msec(_et)=59263, firebase_screen_class(_sc)=MainActivity, firebase_screen_id(_si)=4104369710303382162}] 05-08 14:14:21.793 25322-25386/com.example.saidurrahman.rev7_loginapp2 V/FA: Connection attempt already in progress 05-08 14:14:21.794 25322-25386/com.example.saidurrahman.rev7_loginapp2 D/FA: Connected to remote service 05-08 14:14:21.794 25322-25386/com.example.saidurrahman.rev7_loginapp2 V/FA: Processing queued up service tasks: 2 05-08 14:14:26.728 25322-25322/com.example.saidurrahman.rev7_loginapp2 E/ActivityThread: Performing stop of activity that is already stopped: {com.example.saidurrahman.rev7_loginapp2/com.example.saidurrahman.rev7_loginapp2.MainActivity} java.lang.RuntimeException: Performing stop of activity that is already stopped: {com.example.saidurrahman.rev7_loginapp2/com.example.saidurrahman.rev7_loginapp2.MainActivity} at android.app.ActivityThread.performStopActivityInner(ActivityThread.java:3996) at android.app.ActivityThread.handleStopActivity(ActivityThread.java:4084) at android.app.ActivityThread.-wrap24(Unknown Source:0) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1622) at android.os.Handler.dispatchMessage(Handler.java:106) at

[@joshualkausanorguba6112]

please professor ,,,mine does not allow to use get uid

[@ProfessorDK]

firebaseAuth.getUUID() isnt working you mean? Make sure you are typing with a small f in firebaseAuth object :)

[@bensonsaju9533]

@@ProfessorDK getuid is returning null.how to solve this

[@rishabhgupta5460]

Getting error on getemail()

[@mr.bigmama5324]

Anyone know how to implement this in a fragment?

[@ProfessorDK]

Just add the firebase functions inside the view pager of the fragment :)

[@mr.bigmama5324]

Professor DK thanks for responding

[@mr.bigmama5324]

Professor DK sorry, it's me again, but... Where are this?

[@ProfessorDK]

I didn't get you!

[@sartajsingh1541]

part 9,10................100 please

[@ProfessorDK]

Haha, yes definitely. New videos every weekend :)

[@jakirliton3252]

IT'S TOO MUCH ZOOMING.

[@nishanthtb2080]

How to retrieve all the user's data to listview please help !!??