java.lang.RuntimeException

Unable to start activity ComponentInfo{com.ranatalha.realtimechat/com.ranatalha.realtimechat.Chat_Room}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference

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Solutions on the web45862

  • Unable to start activity ComponentInfo{com.ranatalha.realtimechat/com.ranatalha.realtimechat.Chat_Room}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference
  • via co.uk by Unknown author, 1 year ago
    Unable to start activity ComponentInfo{com.example.kmi_dev.fbloginsample/com.example.kmi_dev.fbloginsample.MyActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference
  • via Stack Overflow by Jason
    , 6 months ago
    Unable to start activity ComponentInfo{com.sp.ez_mart/com.sp.ez_mart.navigation_front}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference
  • Stack trace

    • java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ranatalha.realtimechat/com.ranatalha.realtimechat.Chat_Room}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2457) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2519) at android.app.ActivityThread.access$1200(ActivityThread.java:165) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1380) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5669) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:960) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755) Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference at com.ranatalha.realtimechat.Chat_Room.onCreate(Chat_Room.java:40) at android.app.Activity.performCreate(Activity.java:6102) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2410)

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