????4????Cocoa Touch????校???UIApplication??UIaccelerometer??NSUserDefaults??NSNotificationCenter???????????NSFileManager??NSBundle?????????Cocoa??????????????????Cocoa Touch???????谩?(Cocoa????械????????NSFileManager??NSBundle??NSWorkspace??NSApplication??)??
????4.1??UIApplication
????UIApplication????????????贸??????锌??????????????????UIApplication?????????????贸?????卸???UIApplicationDelegate?????????贸?????卸????????????妤�??????????????泻??????????????????????????????????????????????
????4.1.1 + sharedApplication??????????????UIApplication??????????
????4.1.2 idleTimerDisabled??????瓒�????“?????????”????????????NO?????????????????????????
????4.1.3 - openURL:????????????些?????iOS???????邪???????????????????????缍�?????????????E-mail??
1//???????
2NSURL*url=[NSURLURLWithString:@"http://www.baidu.com"];
3[[UIApplicationsharedApplication]openURL:url];
4
5//??Google??????????????????????????????
6NSString*searchQuery=@"?泄???????????";
7//???????????URL????
8searchQuery=[searchQuerystringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
9NSString*urlString=[NSStringstringWithFormat:@"http://maps.google.com/maps?q=%@"??searchQuery];
10[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:urlString]];
11
12//????缍�
13[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:@"tel://123456"]];
14
15//???????
16[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:@"sms:123456"]];
17
18//????E-mail??????????
19[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:@"mailto://xxxx@xxx.com"]];
????4.2 UIAccelerometer
??????????????????????????璞�????????璞�??x??y???z?????????????????+sharedAccelerometer?????????????UIAccelerometer?????????????
??????Application????????????卸??????卸???????卸?????UIAccelerometerDelegate??UIAccelerometer????????????卸??????????卸??????????????????
????4.3 NSUserDefaults
??????????NSUserDefaults???????????????????????
????+ standardUserDefaults?????????????NSUserDefaults?????????????
????4.4 NSNotificationCenter
??????????NSNotificationCenter????????????????霉???????????????
????+ defaultCenter?????????????NSNotificationCenter?????????????
????4.5 NSFileManager
????NSFileManager????????????????貌??????????位?????????????????????小???iOS5??Mac OS X v10.7??????????????娲�??iCloud????????
????+ defaultManager?????????????NSFileManager??????????????梅?????????NSFileManager????????????????????- init????????????薪????+ defaultManager????????????????NSFileManager???????????????校?NSFileManagerDelegate????????????????????????????????- init????????????渭??????????????霉???????
????4.5NSBundle
????NSBundle?????????????卸???????写?????位??????????????????????????????????
????+ mainBundle?????????????NSBundle?????????????