Common use methods of UIApplication sharedapplication

Here are some of the features of this class:
1. Set the number icon on the icon

Set the digital icon on the main interface icon, introduced in 2.0, the default is 0

[Uiapplicationsharedapplication].applicationiconbadgenumber = 4;
2. Whether the Redo,undo action is supported when setting the shake gesture

Shake gesture, whether the redo undo operation is supported.

3.0 after introduction, default Yes

[Uiapplicationsharedapplication].applicationsupportsshaketoedit =yes;

3. Judging the state of the program operation

Determine the state of the program's operation and introduce it after 2.0

/*

Uiapplicationstateactive,

Uiapplicationstateinactive,

Uiapplicationstatebackground

*/

if ([Uiapplicationsharedapplication].applicationstate ==uiapplicationstateinactive) {

NSLog (@ "program in Operation State");

}
4. Prevent the screen from darkening into hibernation

Prevent screen from darkening, use cautiously, default to No 2.0

[Uiapplicationsharedapplication].idletimerdisabled =yes;

(Use this feature sparingly because it is very power-hungry)
5. Show Networking Status

Show Networking Tags 2.0
[Uiapplicationsharedapplication].networkactivityindicatorvisible =yes;

6. Show an address on the map

nsstring* addresstext [email protected] "1 Infinite Loop, Cupertino, CA 95014";

URL encode the spaces

Addresstext = [addresstextstringbyaddingpercentescapesusingencoding:nsasciistringencoding];

nsstring* Urltext = [nsstringstringwithformat:@ "http://maps.google.com/maps?q=%@", Addresstext];

[[Uiapplicationsharedapplication]openurl:[nsurlurlwithstring:urltext]];

7. Send an email

NSString *recipients [email protected] "Mailto:[email protected][email protected],[email Protected]&subject=hello From california! ";

NSString *body [email protected] "&body=it is raining in sunny california!";

NSString *email = [nsstringstringwithformat:@ "%@%@", recipients, body];

email = [Emailstringbyaddingpercentescapesusingencoding:nsutf8stringencoding];

[[Uiapplicationsharedapplication]openurl:[nsurlurlwithstring:email]];
8. Call a number

Call Google 411
[[uiapplicationsharedapplication]openurl:[nsurlurlwithstring:@ "tel://8004664411"]];

9. Send SMS

Text to Google SMS
[[uiapplicationsharedapplication]openurl:[nsurlurlwithstring:@ "sms://466453"]];

10. Open a URL

Lanuch any IPhone developers fav site
[[uiapplicationsharedapplication]openurl:[nsurlurlwithstring:@ "http://itunesconnect.apple.com"]];

Common use methods of UIApplication sharedapplication