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Would anyone know how I can view what a cursor has in it during debugging so that I can determine the functionality of my database helper?
It keeps acting like it's returning data, but then when I attempt to use the cursor.isNull(0) method, I keep getting NullPointerException thrown and not being able to see what the cursor has in it while stepping through the execution is really frustrating me.
Any help would be extremely appreciated.
Thanks.
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Cursors are what contain the result set of a query made against a database in Android. The Cursor class has an API that allows an app to read (in a type-safe manner) the columns that were returned from the query as well as iterate over the rows of the result set.
It is an object that is used to make the connection for executing SQL queries. It acts as middleware between SQLite database connection and SQL query. It is created after giving connection to SQLite database.
This class is used to store a set of values that the ContentResolver can process.
We can retrieve anything from database using an object of the Cursor class. We will call a method of this class called rawQuery and it will return a resultset with the cursor pointing to the table. We can move the cursor forward and retrieve the data. This method return the total number of columns of the table.
Android has provided a specific class just for debugging Cursors. It is called DatabaseUtils.
Call the method DatabaseUtils.dumpCursorToString(cursor) to view the contents of your cursor.
This helper loops through and prints out the content of the Cursor for you, and returns the cursor to its original position so that it doesn't mess up your iterating logic.
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