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Tutorial zur Android-Entwicklung – Bestellung von Essen App Teil 42 Upgrade der neuesten Firebase-Server-App

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Ab einem der nächsten Tutorials werden wir die Server-App entwickeln, damit Sie Ihre Server-App auf die neueste Bibliothek von Firebase und Google Services aktualisieren können

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Kurs zur Entwicklung von Android-Apps.

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  1. hello can you help me pls

  2. How to update multiple children at the same time?

  3. when i update all libraries i get this

    Error:Failed to notify dependency resolution listener.
    The library com.google.android.gms:play-services-basement is being requested by various other libraries at [[15.0.1,15.0.1]], but resolves to 17.1.1. Disable the plugin and check your dependencies tree using ./gradlew :app:dependencies.

  4. can u tell me how to solved my problem, i cant placed order to the client app but the server cant fetch the order of the client .
    thankyou in advance

  5. Hello I have error

    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference




  6. Hey, I am having an issue in this food app
    That when he log into his account he is also showing all the orders including his order..
    How can I fix this..

  7. Sir whenever i click on any category it doesn't shows anything and when i click back button even the categories disappear….please help me sir ….its a part of my project….would be really grateful

  8. Do we also need android version 3 for this update? Because It shows error while syncing.

  9. When I update server app then it can't add new category and food items it show exception

  10. Sir everything is working fine instead of orderStatus activity is not loading data.. thanx for your help…..

  11. Very good!!! I got more in the middle of the tutorial and everything is working perfectly. I hope there will be more video with updates and improvements. Hugs Teacher.

  12. hi, after i rebuild this project.. i have error.. can you help me?

    Program type already present: android.arch.lifecycle.LiveData$LifecycleBoundObserver
    Message{kind=ERROR, text=Program type already present: android.arch.lifecycle.LiveData$LifecycleBoundObserver, sources=[Unknown source file], tool name=Optional.of(D8)}

  13. edmt dev, I am very sad to hear that my school's gmail is about to close, when my "AppOrder" project is unloading, I had to switch from gmail to gmail private, but i have a few The error is as follows
    1. Shipment failed, but still in the firebase
    2 . Status does not appear anymore
    3. When shopping cart is defective
    I am very sad, hopefully after sir can only I overcome. I have watched the video from start to finish, and have switched firebase as such and still suffer from 3 errors

  14. Excelente seus videos!!

    Gostaria de ajuda, como faço para remover da tela de order (APP SERVER) sem excluir do banco, caso contrario ficaria muitos pedidos e atrpalha a visualização.


  15. Sir i am having merge dex error

    Error:Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'.
    > java.lang.RuntimeException: com.android.builder.dexing.DexArchiveMergerException: Unable to merge dex

  16. can you show how you update in the client app

  17. sir after this tutorial in starting point every thing working fine but after click any food category image detail food activity start and after click back button, all category image disappeared plss help sir

  18. Hello sir, thank you for your efforts.
    But, sorry… I'm facing an error with my serverApp after finish this part and Rebuild Project…
    Error:Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'.
    > java.lang.RuntimeException: java.lang.RuntimeException: com.android.builder.dexing.DexArchiveMergerException: Unable to merge dex

  19. when I clicked the category it's not respond anything, it's not shown the foodlist.

    Please help, sir 🙁

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