HireVietnamese iPhone Training Ebook iPhone Development

1. HIREVIETNAMESE
iPhone Training
Lesson 4

2. HIREVIETNAMESE
http://www.hirevietnamese.com
Contents
1 Storing Data
4 Example 4
5 Exercise 4
2

3. HIREVIETNAMESE
http://www.hirevietnamese.com
Storing Data
Setting user Preferences with
NSUserDefaults
3

4. HIREVIETNAMESE
http://www.hirevietnamese.com
NSUserDefaults
 Get a Handle to the NSUserDefaults object
 NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
 Saving
 [prefs setObject:ObjectToSave forKey:”KEY”];
 Retrieving
 NSString *myString = [prefs stringForKey:@“KEY"];
4

5. HIREVIETNAMESE
http://www.hirevietnamese.com
Storing Data
Saving/Retrieving Data from a
SQLite Database
5

6. HIREVIETNAMESE
http://www.hirevietnamese.com
Create Database
6

7. HIREVIETNAMESE
http://www.hirevietnamese.com
Check and Create DB
7

8. HIREVIETNAMESE
http://www.hirevietnamese.com
Select Statement
8

9. HIREVIETNAMESE
http://www.hirevietnamese.com
Delete Statement
9

10. HIREVIETNAMESE
http://www.hirevietnamese.com
Add Statement
10

11. HIREVIETNAMESE
http://www.hirevietnamese.com
Update Statement
11

12. HIREVIETNAMESE
http://www.hirevietnamese.com
Example 4
12

13. HIREVIETNAMESE
http://www.hirevietnamese.com
Exercise 4
13

14. HIREVIETNAMESE