Attempt to invoke virtual method 'android.database.Cursor android.database.sqlite.SQLiteDatabase.query(boolean, java.lang.String, java.lang.String[], java.lang.String, java.lang.String[], java.lang.String, java.lang.String, java.lang.String, java.lang.String, android.os.CancellationSignal)' on a null object reference
Cursor cursor = db.query(true, "que", new String[]{"ID", "RESOURCES"},null, null, "RESOURCES", null, "ID", null, null);
我这句话应该没有错误,为什么会有空指针呢