By Sunny Kumar Aditya
Develop Android purposes with essentially the most standard database engines, SQLite
About This Book
- Develop database-driven Android purposes and remain prior to the curve
- Explore the simplest concepts to exploit cursors and loaders to accomplish optimal results
- A step by step method of use SQLite for development Android applications
Who This ebook Is For
This is a perfect ebook for Android programmers who are looking to discover SQLite databases in keeping with Android functions. the final competency point anticipated of the reader is past wisdom of constructing purposes and uncomplicated wisdom of Android and SQL.
SQLite is an open resource relational database administration process. Android makes use of the SQLite database to shop and retrieve info again and again. the driver in the back of the platform is the database, allowing a myriad of decisions for builders making state-of-the-art applications.
Android SQLite necessities makes a speciality of the center options in the back of construction database-driven purposes. This publication covers the elemental and complicated themes with identical simplicity and element, so one can permit readers to quick snatch and enforce the ideas to construct an program database.
This ebook takes a hands-on, example-based method of support readers comprehend the center issues of SQLite and Android database-driven purposes. This publication specializes in supplying you with latent in addition to frequent wisdom approximately practices and ways in the direction of improvement in an simply comprehensible manner.
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Additional info for Android SQLite Essentials
D("DATABASE", "count is : " + count); } } ... delete(TABLE_CONTACTS, whereClause, whereArgs); } ... put("COL_1", 1);, the column is COL_1 and the value being inserted for that column is 1. With this method, Android can buffer the results of the query in a productive manner; as it doesn’t need to load all of the data into memory. To obtain the elements of the resulting query, you can use the getCount() method. The isAfterLast() method permits you to analyze whether the end of the output has arrived.
To obtain the elements of the resulting query, you can use the getCount() method. The isAfterLast() method permits you to analyze whether the end of the output has arrived. columnIndex is the number of the column you will be accessing. The Cursor object also provides the getColumnIndexOrThrow(String) method that permits you to get the column index for a column name of the table. To close the Cursor object, the close() method call will be used. It points to a row of the query result that enables Android to buffer the results effectively since now it is not required to load all the data in the memory.
Html. Then we will use the raw query to fetch data back from the table. insert(TABLE_CONTACTS, null, cv); } ... d("DATABASE", "count is : " + count); } } ... delete(TABLE_CONTACTS, whereClause, whereArgs); } ... put("COL_1", 1);, the column is COL_1 and the value being inserted for that column is 1. With this method, Android can buffer the results of the query in a productive manner; as it doesn’t need to load all of the data into memory. To obtain the elements of the resulting query, you can use the getCount() method.