java.lang.ClassCastException: java.util.ArrayList cannot be cast to java.util.Map

Stack Overflow | bojan | 2 months ago
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  1. 0

    HashMap cannot be cast to ArrayList

    Stack Overflow | 2 months ago | bojan
    java.lang.ClassCastException: java.util.ArrayList cannot be cast to java.util.Map
  2. 0
    samebug tip
    Firebase requires your Pojo to have public getters and setters, check if you created getters and setters and if your variables are public!
  3. 0
    samebug tip
    Firebase Database considers public fields and JavaBean-like getters and setters when serializing/deserializing JSON. A public field with a getter and a setter may cause this exception. Try to change to private or removing getter and setter.
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  5. 0
    samebug tip
    Update Google Play Services to the latest version and android support library to latest version. 9.8 for google play services and 25.0.0 for the android support libraries seems to make it work.

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    Root Cause Analysis

    1. java.lang.ClassCastException

      java.util.ArrayList cannot be cast to java.util.Map

      at com.packtpub.materialdesign4.TileContentFragment$1$1.onDataChange()
    2. com.packtpub.materialdesign4
      TileContentFragment$1$1.onDataChange
      1. com.packtpub.materialdesign4.TileContentFragment$1$1.onDataChange(TileContentFragment.java:82)
      1 frame
    3. com.google.android
      zzalj$1.run
      1. com.google.android.gms.internal.zzakg.zza(Unknown Source)
      2. com.google.android.gms.internal.zzalg.zzcxk(Unknown Source)
      3. com.google.android.gms.internal.zzalj$1.run(Unknown Source)
      3 frames
    4. Android Platform
      ActivityThread.main
      1. android.os.Handler.handleCallback(Handler.java:739)
      2. android.os.Handler.dispatchMessage(Handler.java:95)
      3. android.os.Looper.loop(Looper.java:148)
      4. android.app.ActivityThread.main(ActivityThread.java:5527)
      4 frames
    5. Java RT
      Method.invoke
      1. java.lang.reflect.Method.invoke(Native Method)
      1 frame
    6. Android
      ZygoteInit.main
      1. com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:730)
      2. com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)
      2 frames