java public NoteDbOpenHelper(Context context) { super(context, DB_NAME, null, 1); }
kotlin open fun NoteDbOpenHelper(context: Context?) { super(context, DATABASE_NAME, null, 1) }
收起
需要加.onCreate才能构造
open fun NoteDbOpenHelper(context: Context?) { super.onCreate(context, DATABASE_NAME, null, 1) }
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