java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.dim.myapplication/com.example.dim.myapplication.Create_Apointment}: java.lang.NullPointerException

Stack Overflow | Dimis90 | 6 months ago
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    Stack Overflow | 6 months ago | Dimis90
    java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.dim.myapplication/com.example.dim.myapplication.Create_Apointment}: java.lang.NullPointerException
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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at android.support.v7.app.AppCompatDelegateImplBase.<init>()
    2. Android v7
      AppCompatActivity.findViewById
      1. android.support.v7.app.AppCompatDelegateImplBase.<init>(AppCompatDelegateImplBase.java:68)
      2. android.support.v7.app.AppCompatDelegateImplV7.<init>(AppCompatDelegateImplV7.java:145)
      3. android.support.v7.app.AppCompatDelegateImplV11.<init>(AppCompatDelegateImplV11.java:28)
      4. android.support.v7.app.AppCompatDelegateImplV14.<init>(AppCompatDelegateImplV14.java:41)
      5. android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:188)
      6. android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:170)
      7. android.support.v7.app.AppCompatActivity.getDelegate(AppCompatActivity.java:502)
      8. android.support.v7.app.AppCompatActivity.findViewById(AppCompatActivity.java:174)
      8 frames
    3. com.example.dim
      Create_Apointment.<init>
      1. com.example.dim.myapplication.Create_Apointment.<init>(Create_Apointment.java:13)
      1 frame
    4. Java RT
      Class.newInstance
      1. java.lang.Class.newInstanceImpl(Native Method)
      2. java.lang.Class.newInstance(Class.java:1319)
      2 frames
    5. Android Platform
      ActivityThread.performLaunchActivity
      1. android.app.Instrumentation.newActivity(Instrumentation.java:1027)
      2. android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1885)
      2 frames