java.lang.NullPointerException: Attempt to invoke virtual method 'android.database.sqlite.SQLiteDatabase android.content.Context.openOrCreateDatabase(java.lang.String, int, android.database.sqlite.SQLiteDatabase$CursorFactory, android.database.DatabaseErrorHandler)' on a null object reference

Stack Overflow | Erik_DA | 5 months ago
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    null pointer exception viewpager retrieve from database

    Stack Overflow | 5 months ago | Erik_DA
    java.lang.NullPointerException: Attempt to invoke virtual method 'android.database.sqlite.SQLiteDatabase android.content.Context.openOrCreateDatabase(java.lang.String, int, android.database.sqlite.SQLiteDatabase$CursorFactory, android.database.DatabaseErrorHandler)' on a null object reference

    Root Cause Analysis

    1. java.lang.NullPointerException

      Attempt to invoke virtual method 'android.database.sqlite.SQLiteDatabase android.content.Context.openOrCreateDatabase(java.lang.String, int, android.database.sqlite.SQLiteDatabase$CursorFactory, android.database.DatabaseErrorHandler)' on a null object reference

      at com.example.eric.myapp6.database.DataBase.setUser_Exam()
    2. com.example.eric
      sample_test_vpadapter$2.onClick
      1. com.example.eric.myapp6.database.DataBase.setUser_Exam(DataBase.java:97)
      2. com.example.eric.myapp6.adapter.sample_test_vpadapter$2.onClick(sample_test_vpadapter.java:85)
      2 frames