通知

AppDelegate.m

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@implementation AppDelegate

//只有当应用在前台时,该方法才会被调用

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification{

//如果应用程序在前台,将应用程序图标上红色数字设为0

application.applicationIconBadgeNumber = 0;

//使用UIAlertView显示本地通知的信息

[[[UIAlertView alloc]initWithTitle:@"收到通知" message:notification.alertBody delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil] show];

}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

// Override point for customization after application launch.

return YES;

}

-----------------------------------

#import "ViewController.h"

@interface ViewController ()

{

UIApplication *app;

}

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

app = [UIApplication sharedApplication];

}

- (IBAction)changed:(id)sender{

UISwitch *sw = (UISwitch *)sender;

if (sw.on) {

if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)]) {

[[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];

}

//创建一个本地通知

UILocalNotification *notification = [[UILocalNotification alloc]init];

//设置通知的触发时间

notification.fireDate = [NSDate dateWithTimeIntervalSinceNow:20];

//设置通知的时区

notification.timeZone = [NSTimeZone defaultTimeZone];

//设置通知的重复发送的时间间隔

notification.repeatInterval = kCFCalendarUnitMinute;

//设置通知的声音

notification.soundName = @"";

//通知标题

notification.alertTitle=@"啦啦啦";

// 设置当设备处于锁屏状态时，显示通知的警告框下方的title

notification.alertAction = @"OPEN";

// 设置通知是否可显示Action

notification.hasAction = YES;

// 设置通过通知加载应用时显示的图片

notification.alertLaunchImage = @"";

// 设置通知内容

notification.alertBody = @"主人,妞妞想你了!";

// 设置显示在应用程序上红色徽标中的数字

notification.applicationIconBadgeNumber = 1;

// 设置userinfo，用于携带额外的附加信息。

NSDictionary *info = @{@"bys": @"key"};

notification.userInfo = info;

// 调度通知

[app scheduleLocalNotification:notification];  // ①

}

else

{

// 获取所有处于调度中本地通知数组

NSArray *localArray = [app scheduledLocalNotifications];

if (localArray)

{

for (UILocalNotification *noti in localArray)

{

NSDictionary *dict = noti.userInfo;

if (dict)

{

// 如果找到要取消的通知

NSString *inKey = [dict objectForKey:@"bys"];

if ([inKey isEqualToString:@"key"])

{

// 取消调度该通知

[app cancelLocalNotification:noti];  // ②

}

}

}

}

}

}