The document outlines key concepts in developing an iOS mobile application, specifically focusing on local storage using UserDefaults, which allows for the storage of various data types. It provides code snippets on how to save and retrieve user settings and highlights the importance of understanding default return values. Additionally, it discusses the implementation of UI elements like mbprogresshud and uitableview for enhancing user experience in the app.

1. Developing Mobile
Application
Ios : session # 5
By : Amr Elghadban

2. AMR
ELGHADBAN
ABOUT ME
———————————
SOFTWARE ENGINEER
FCI - HELWAN 2010
ITI INTAKE 32
WORKED BEFORE IN
- Tawasol IT
- Etisalat Masr
- NTG Clarity

3. Agenda
Local storage
(UserDefault,Sqlite,plist,coredata)
Build “Browser App”
Progress bar
MProgresss
UITabelView

4. UserDefaults
All iOS apps have a built in data dictionary
that stores small amounts of user settings
for as long as the app is installed.
This system, called UserDefaults can save
integers, booleans, strings, arrays,
dictionaries, dates and more, but you
should be careful not to save too much data
because it will slow the launch of your app.

5. UserDefaults
When you set values like that, they
become permanent – you can quit the app
then re-launch and they'll still be there,
so it's the ideal way to store app
configuration data.
NSUserDefault is light weight storage section where user can save their
persistent data.
NSUserDefault Storing the data in the form of key and value pair.

6. How to save user settings
using UserDefaults
To save:
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
[prefs setObject:@"TextToSave" forKey:@“keyToFindText"];
[userdefault synchronize];
To load:
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
NSString *textToLoad = [prefs stringForKey:@"keyToFindText"];

7. How to save user settings using
UserDefaults
When it comes to reading data back, it's still easy but has an important proviso:
UserDefaults will return a default value if the setting can't be found. You need to
know what these default values are so that you don't confuse them with real
values that you set. Here they are:
integer(forKey:) returns an integer if the key existed, or 0 if not.
bool(forKey:) returns a boolean if the key existed, or false if not.
float(forKey:) returns a float if the key existed, or 0.0 if not.
double(forKey:) returns a double if the key existed, or 0.0 if not.
object(forKey:) returns AnyObject? so you need to conditionally typecast it to
your data type.
With that in mind, you can read values back like this:

8. How to save user settings using
UserDefaults
Use the appropriate getter/setter method to retrieve or set values: Getters &
Setters
boolForKey: setBool:forKey:
doubleForKey: setDouble:forKey:
floatForKey: setFloat:forKey:
integerForKey: setInteger:forKey:
objectForKey: setObject:forKey:
arrayForKey: setObject:forKey:
dataForKey: setObject:forKey:
dictionaryForKey: setObject:forKey:
stringArrayForKey: setObject:forKey:
stringForKey: setObject:forKey:

9. Browser App
1.Enhance progress view
1. rounded UIView
2.use MBProgressbar

10. loading View
Create A view
UIActivityIndicatorView
Rounded UIView
Using MBProgressHUD
https://github.com/
jdg/MBProgressHUD

11. MBProgressHUD
[MBProgressHUD
showHUDAddedTo:self.view
animated:YES];
[MBProgressHUD
hideHUDForView:self.view animated:YES];

12. Browser Task

13. UITableView

14. UITableView
It is used for displaying a vertically
scrollable view which consists of a
number of cells (generally reusable cells).
It has special features like headers,
footers, rows, and section.

15. UITableView
delegate
dataSource
The UITableViewDataSource protocol declares
two required methods
(tableView:cellForRowAtIndexPath and
tableView:numberOfRowsInSection)

16. THANKS
▸ Skype : amr_elghadban
▸ Email : amr.elghadban@gmail.com
▸ Phone : (+20) 1098558500
▸ Fb/amr.elghadban
▸ Linkedin/amr_elghadban
▸ ios_course facebook group : https://www.facebook.com/groups/
1161387897317786/
WISH YOU WONDERFUL DAY