The document outlines the four steps in a typical design process: 1) identifying a problem, 2) people recognizing the problem, 3) attempting DIY solutions, and 4) the designer's solution. It then discusses various multitasking capabilities on iOS like fast app switching, push notifications, background audio and location services, and more. Code snippets are provided to illustrate implementing some of these features.

3. Часть первая: Заявка на дизайн.
материал по сайту artlebedev.ru
Андрей Соловей

4. Джон

7. Заказчик

8. Заказчик Дизайнер

11. Заявка на дизайн

12. Шаг 1: Возникновение проблемы.

18. Шаг 2: Осознание проблемы обычными людьми.

24. Шаг 3: Попытка решить проблему подручными
средствами, до прихода дизайнера.

29. Шаг 4: Собственно, дизайнерское решение.

33. Прогресс
Шаг 1: Возникновение проблемы.
Шаг 2: Осознание проблемы обычными людьми.
Шаг 3: Попытка решить проблему подручными средствами, до прихода дизайнера.
Шаг 4: Собственно, дизайнерское решение.

34. Часть вторая: Многозадачность в iOS.

36. • AirPlay

37. • AirPlay
• AirPrint

38. • AirPlay
• AirPrint
• HTTP Live Streaming Statistics

39. • AirPlay
• AirPrint
• HTTP Live Streaming Statistics
• iAd

40. • AirPlay
• AirPrint
• HTTP Live Streaming Statistics
• iAd
• Game Center

41. • AirPlay
• AirPrint
• HTTP Live Streaming Statistics
• iAd
• Game Center
• Multitasking

43. #import <sys/sysctl.h>
void printProcessInfo()
{
int mib[5];
struct kinfo_proc *procs = NULL, *newprocs;
int i, st, nprocs;
size_t miblen, size;
mib[0] = CTL_KERN; // Set up sysctl MIB
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_ALL;
mib[3] = 0;
miblen = 4;
st = sysctl(mib, miblen, NULL, &size, NULL, 0); // Get initial sizing
do // Repeat until we get them all …
{
size += size / 10; // Room to grow
newprocs = (struct kinfo_proc*)realloc(procs, size);
if (!newprocs)
{
if (procs)
free(procs);
NSLog(@"Error: realloc failed.");
return;
}
procs = newprocs;
st = sysctl(mib, miblen, procs, &size, NULL, 0);
}while (st == -1 && errno == ENOMEM);
if (st != 0)
{
NSLog(@"Error: sysctl(KERN_PROC) failed.");
return;
}
assert(size % sizeof(struct kinfo_proc) == 0); // Do we match the kernel?
nprocs = size / sizeof(struct kinfo_proc);
if (!nprocs)
{
NSLog(@"Error: printProcessInfo.");
return;
}
NSLog(@" PIDtNamen");
NSLog(@"-----t--------------n");
for (i = nprocs-1; i >=0; i--)
{
NSLog(@"%5dt%sn",(int)procs[i].kp_proc.p_pid, procs[i].kp_proc.p_comm);
}
free(procs);
}

44. Multitasking:
Fast app switching

45. Multitasking:
Fast app switching
Push notifications

46. Multitasking:
Fast app switching
Push notifications
Local notifications

47. Multitasking:
Fast app switching
Push notifications
Local notifications
Background audio

48. Multitasking:
Fast app switching
Push notifications
Local notifications
Background audio
Voice over IP

49. Multitasking:
Fast app switching
Push notifications
Local notifications
Background audio
Voice over IP
Background location

50. Multitasking:
Fast app switching
Push notifications
Local notifications
Background audio
Voice over IP
Background location
Task finishing

51. Multitasking:
Fast app switching
Push notifications
Local notifications
Background audio
Voice over IP
Background location
Task finishing

52. Fast app switching

55. Push notifications

61. Key

63. !

64. K ey
!

65. K ey
!

66. !

67. Local notifications

68. UILocalNotification *scheduledAlert = [[[UILocalNotification alloc] init] autorelease];
scheduledAlert.applicationIconBadgeNumber=10;
scheduledAlert.fireDate = [NSDate dateWithTimeIntervalSinceNow:10];
scheduledAlert.timeZone = [NSTimeZone defaultTimeZone];
scheduledAlert.alertBody = @"Ваш айПад Самоуничтожится через 5 секунд!";
[[UIApplication sharedApplication] scheduleLocalNotification:scheduledAlert];

69. UILocalNotification *scheduledAlert = [[[UILocalNotification alloc] init] autorelease];
scheduledAlert.applicationIconBadgeNumber=10;
scheduledAlert.fireDate = [NSDate dateWithTimeIntervalSinceNow:10];
scheduledAlert.timeZone = [NSTimeZone defaultTimeZone];
scheduledAlert.alertBody = @"Ваш айПад Самоуничтожится через 5 секунд!";
[[UIApplication sharedApplication] scheduleLocalNotification:scheduledAlert];

70. Multitasking:
Fast app switching
Push notifications
Local notifications
Background audio
Voice over IP
Background location
Task finishing

71. Background audio Voice over IP Background location
Info.plist

72. Background audio:

73. Background audio:
NSData * data = [self loadDataFile:@"/We will rok you.mp3"];
AVAudioPlayer * player = [[AVAudioPlayer alloc] initWithData:data error:nil ];
[player play];
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];
[session setActive:YES error:nil];

74. Background audio:
NSData * data = [self loadDataFile:@"/We will rok you.mp3"];
AVAudioPlayer * player = [[AVAudioPlayer alloc] initWithData:data error:nil ];
[player play];
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];
[session setActive:YES error:nil];

75. Background audio:
NSData * data = [self loadDataFile:@"/We will rok you.mp3"];
AVAudioPlayer * player = [[AVAudioPlayer alloc] initWithData:data error:nil ];
[player play];
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];
[session setActive:YES error:nil];
Background location:

76. Background audio:
NSData * data = [self loadDataFile:@"/We will rok you.mp3"];
AVAudioPlayer * player = [[AVAudioPlayer alloc] initWithData:data error:nil ];
[player play];
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];
[session setActive:YES error:nil];
Background location:
CLLocationManager * locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[locationManager startUpdatingLocation];

77. Background audio:
NSData * data = [self loadDataFile:@"/We will rok you.mp3"];
AVAudioPlayer * player = [[AVAudioPlayer alloc] initWithData:data error:nil ];
[player play];
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];
[session setActive:YES error:nil];
Background location:
CLLocationManager * locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[locationManager startUpdatingLocation];
Voice over IP:
???

78. Task finishing

79. Task finishing
До 10 минут

80. Task finishing
До 10 минут
UIBackgroundTaskIden0fier identifer = [[UIApplication sharedApplication]
beginBackgroundTaskWithExpirationHandler:^{ }];

81. Вопросы?

82. Спасибо!