iOS中提供了2種推送通知
- 本地推送通知（Local Notification）
- 遠程推送通知（Remote Notification）
推送通知的作用
- 可以讓不在前臺運行的app，告知用戶app內部發生了什么事情
- 推送通知的呈現效果總結
- 用戶接收的推送通知，都會展示在“通知中心”
- 從屏幕頂部往下滑，就能調出“通知中心”
- 顯示橫幅還是UIAlertView，取決于用戶的設置
總結一下，推送通知有5種不同的呈現效果
- 在屏幕頂部顯示一塊橫幅（顯示具體內容）
- 在屏幕中間彈出一個UIAlertView（顯示具體內容）
- 在鎖屏界面顯示一塊橫幅（鎖屏狀態下，顯示具體內容）
- 更新app圖標的數字（說明新內容的數量）
- 播放音效（提醒作用）
** 推送通知的使用細節**
- 發出推送通知時，如果當前程序正運行在前臺，那么推送通知就不會被呈現出來
- 點擊推送通知后，默認會自動打開發出推送通知的app
- 不管app打開還是關閉，推送通知都能如期發出
本地推送
AppDelegate.m
#import "AppDelegate.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
/* UIUserNotificationTypeNone = 0, 無類型(不給用戶發通知)
UIUserNotificationTypeBadge = 1 << 0, 是否可以改變應用圖標右上角的提示數字
UIUserNotificationTypeSound = 1 << 1, 該通知是否會有聲音
UIUserNotificationTypeAlert = 1 << 2, 是否有彈出提示
*/
if ([UIDevice currentDevice].systemVersion.doubleValue >= 8.0) {
UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge | UIUserNotificationTypeAlert | UIUserNotificationTypeSound categories:nil];
[application registerUserNotificationSettings:settings];
}
if (launchOptions[UIApplicationLaunchOptionsLocalNotificationKey]) {
// 跳轉 UILabel *label = [[UILabel alloc] init];
label.frame = CGRectMake(0, 300, 300, 300);
label.backgroundColor = [UIColor redColor];
label.text = [NSString stringWithFormat:@"%@", launchOptions];
label.font = [UIFont systemFontOfSize:14];
label.numberOfLines = 0;
[self.window.rootViewController.view addSubview:label];
}
return YES;
}
/**
* 點擊通知打開應用的時候會執行該方法
* 應用在前臺的時候,收到通知也會執行該方法
*
* @param notification 通知
*/
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification{
UILabel *label = [[UILabel alloc] init];
label.frame = CGRectMake(0, 0, 300, 300);
label.backgroundColor = [UIColor redColor];
label.text = [NSString stringWithFormat:@"%@", notification]
label.font = [UIFont systemFontOfSize:14];
label.numberOfLines = 0;
[self.window.rootViewController.view addSubview:label];
// if (application.applicationState == UIApplicationStateBackground) {
//
// }
}
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
return YES;
}
@end
推送
#import "ViewController.h"
@interface ViewController ()
/**
* 點擊按鈕后添加本地通知
*/
- (IBAction)addLocalNote;
/**
* 移除通知(不常用)
*/
- (IBAction)removeLocalNote;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
}
/**
* 點擊按鈕后添加本地通知
*/
- (IBAction)addLocalNote {
/*
@property(nonatomic,copy) NSDate *fireDate;
@property(nonatomic,copy) NSTimeZone *timeZone;
@property(nonatomic) NSCalendarUnit repeatInterval;
@property(nonatomic,copy) NSCalendar *repeatCalendar;
@property(nonatomic,copy) CLRegion *region NS_AVAILABLE_IOS(8_0);
@property(nonatomic,assign) BOOL regionTriggersOnce NS_AVAILABLE_IOS(8_0);
@property(nonatomic,copy) NSString *alertBody;
@property(nonatomic) BOOL hasAction;
@property(nonatomic,copy) NSString *alertAction;
@property(nonatomic,copy) NSString *alertLaunchImage;
@property(nonatomic,copy) NSString *soundName;
UILocalNotificationDefaultSoundName @property(nonatomic) NSInteger applicationIconBadgeNumber;
@property(nonatomic,copy) NSDictionary *userInfo;
*/
// 1.創建一個本地通知
UILocalNotification *localNote = [[UILocalNotification alloc] init];
// 1.1.設置通知發出的時間
localNote.fireDate = [NSDate dateWithTimeIntervalSinceNow:5];
// 1.2.設置通知發出的內容
localNote.alertBody = @"吃飯了嗎?";
// 1.3.是否彈出提示框
localNote.hasAction = YES;
// 1.4.設置提示框
localNote.alertAction = @"趕緊查看";
// 1.5.設置啟動的圖片
localNote.alertLaunchImage = @"1111";
// 1.6.設置啟動的音效
localNote.soundName = UILocalNotificationDefaultSoundName;
// 1.7.設置應用圖標提醒的數字
localNote.applicationIconBadgeNumber = 999;
// 1.8.如果想將通知的信息傳遞過去,必須使用userInfo屬性
localNote.userInfo = @{@"msg" : @"吃飯了嗎", @"date" : localNote.fireDate};
// 2.調度通知
[[UIApplication sharedApplication] scheduleLocalNotification:localNote];
[[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
}
- (IBAction)removeLocalNote {
[[UIApplication sharedApplication] cancelAllLocalNotifications];
// [UIApplication sharedApplication] cancelLocalNotification:(UILocalNotification *)
}
@end
遠程推送
** AppDelegate.m**
#import "AppDelegate.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
if ([UIDevice currentDevice].systemVersion.doubleValue >= 8.0) {
// 1.向用戶請求可以給用戶推送消息
UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert categories:nil];
[application registerUserNotificationSettings:settings];
// 2.注冊遠程通知(拿到用戶的DeviceToken)
[application registerForRemoteNotifications];
} else {
[application registerForRemoteNotificationTypes:UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound];
}
if (launchOptions[UIApplicationLaunchOptionsRemoteNotificationKey]) {
// 頁面的跳轉
}
[application setApplicationIconBadgeNumber:0];
return YES;
}
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
// 將用戶的用戶名和deviceToken發送給服務器,讓服務器進行保存備份即可
NSLog(@"%@", deviceToken);
}
/**
* 當接受到遠程通知的時候會調用該方法
*
* @param userInfo 遠程通知的信息
*/
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
// 在這里可以跳轉的其他頁面
NSLog(@"%@", userInfo);
}
/**
* 如果接受到遠程通知時,想要后臺執行任務,則實現調用該方法
*
* @param userInfo
* @param completionHandler 后臺執行完之后要告知系統,是否更新成功
*/
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
{
NSLog(@"%@", userInfo);
completionHandler(UIBackgroundFetchResultNewData);
}
@end
