前言 ：公司项目-鲜特汇收银台APP，需要实现客户扫二维码付款后，后台推送通知，APP客户端收到通知之后语音播放：“鲜特汇到账xxx元”的功能。
PS:本项目使用的是极光推送。详细讲解过程：
1、极光SDK集成
极光推送SDK下载 ，下载好iOS版SDK直接将Lib文件夹拖入工程中，添加依赖库：libresolv.tbd。有疑问查看 官方集成文档。
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AppDelegate.m
1.1、配置 SDK
//
// AppDelegate.m
// JPushTest
//
// Created by 郭明健 on 2018/7/26.
// Copyright © 2018年 GuoMingJian. All rights reserved.
//
#import "AppDelegate.h"
#import "JPUSHService.h"
#import
//#define appkey @"xxxxx"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
//配置极光推送，appkey定义为宏，填自己极光应用对应的appkey
[JPUSHService setupWithOption:launchOptions
appKey:appkey
channel:nil
apsForProduction:NO
advertisingIdentifier:nil];
[JPUSHService setLogOFF];
//注册APNs
JPUSHRegisterEntity * entity = [[JPUSHRegisterEntity alloc] init];
entity.types = JPAuthorizationOptionAlert|JPAuthorizationOptionBadge|JPAuthorizationOptionSound;
[JPUSHService registerForRemoteNotificationConfig:entity delegate:self];
return YES;
}
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
NSString *deviceTokenStr = [self getDeviceToken:deviceToken];
NSLog(@"deviceToken：%@", deviceTokenStr);
[JPUSHService registerDeviceToken:deviceToken];
}
#pragma mark - private
- (NSString *)getDeviceToken:(NSData *)deviceToken
{
NSMutableString *deviceTokenStr = [NSMutableString string];
const char *bytes = deviceToken.bytes;
int iCount = (int)deviceToken.length;
for (int i = 0; i < iCount; i++)
{
[deviceTokenStr appendFormat:@"%02x", bytes[i]&0x000000FF];
}
return deviceTokenStr;
}
1.2、推送通知回调方法
#pragma mark - 远程通知
/**
APNs 新增 "content-available":1, (静默推送)
*/
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
{
[JPUSHService handleRemoteNotification:userInfo];
completionHandler(UIBackgroundFetchResultNewData);
}
#pragma mark - JPUSHRegisterDelegate
- (void)jpushNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(NSInteger options))completionHandler
{
//本地通知
completionHandler(UNNotificationPresentationOptionBadge|UNNotificationPresentationOptionSound|UNNotificationPresentationOptionAlert);
}
- (void)jpushNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void(^)())completionHandler
{
//点击通知回调
completionHandler();
}
#pragma mark -
- (void)applicationDidBecomeActive:(UIApplication *)application
{
[[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
}
- (void)applicationDidEnterBackground:(UIApplication *)application {
NSLog(@"App进入后台");
}
@end
2、到这里极光推送已经集成好了，可以通过极光控制台模拟推送通知了，当然你也可以使用 Easy APNs Provider工具来发送通知。
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3、入坑历程：
1、APP处于前台状态，推送什么的都没问题。一旦，APP退到后台，这时候推送通知过来，根本没有方法监听得到通知来了这个动作，就拿不到推送得内容。
为了解决这个问题，我开始想到的是静默推送。
静默推送设置：
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APNs添加key-value -> "content-available":1,
例子：
{
"aps" : {
"content-available" : 1,
"alert" : {
"title" : "通知",
"body" : "鲜特汇到账45元"
},
"badge" : 0,
"sound" : "default"
}
}
设置好之后，运行APP，当APP退到后台，此时推送通知过来会在已下方法监听到：
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
{
}
当APP退到后台，推送一条通知，在上面代理方法打个断点，处理好通知内容，然后执行语音播报代码：
//文字--语音播报
- (void)playMsg:(NSString *)msg
{
//NSLog(@"语音播报：%@", msg);
dispatch_async(dispatch_get_main_queue(), ^{
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.6 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
//后台播报
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
[[AVAudioSession sharedInstance] setActive:YES error:nil];
//
AVSpeechSynthesizer *avSpeech = [[AVSpeechSynthesizer alloc] init];
AVSpeechUtterance *avSpeechterance = [AVSpeechUtterance speechUtteranceWithString:msg];
AVSpeechSynthesisVoice *voiceType = [AVSpeechSynthesisVoice voiceWithLanguage:@"zh-CN"];
avSpeechterance.voice = voiceType;
avSpeechterance.volume = 1;
avSpeechterance.rate = 0.5;
avSpeechterance.pitchMultiplier = 1.1;
[avSpeech speakUtterance:avSpeechterance];
});
});
}
此时，APP退到后台也能语音播报，如果你以为这样大功告成那你就错了，这样非常容易被系统中断，导致语音根本没声音。报以下错：
[TTS] Failure starting audio queue alp!
[TTS] _BeginSpeaking: couldn't begin playback
围绕这个报错我可算是尝尽办法，什么后台任务，runloop常驻线程（怀疑APP挂起导致），开后台语音等等。然而并没有什么卵用！！！
最终是通过Notification Service解决的，大家了解一下：
Editor->Add Target
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给通知扩展取个名字（随你喜好取），bundle id就是你项目id.扩展名就可以了。扩展的版本兼容到10以上，毕竟通知扩展是iOS10推出的。
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注意APNs必须添加key-value -> "mutable-content":1, 才能监听到通知。完成到这里基本就弄好了。语音播报用系统的感觉声音怪怪的，所有用了百度的语音合成SDK。
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//
// NotificationService.m
// PushExtend
//
// Created by 郭明健 on 2018/7/26.
// Copyright © 2018年 GuoMingJian. All rights reserved.
//
#import "NotificationService.h"
#import "CommonMethod.h"
#import
#import "BDSSpeechSynthesizer.h"
//百度语音TTS：https://ai.baidu.com/docs#/TTS-iOS-SDK/4d8edeab
NSString* API_KEY = @"xxxxxxxx";
NSString* SECRET_KEY = @"xxxxxxxx";
#define kTime 0.6
@interface NotificationService ()
@property (nonatomic, strong) void (^contentHandler)(UNNotificationContent *contentToDeliver);
@property (nonatomic, strong) UNMutableNotificationContent *bestAttemptContent;
@end
@implementation NotificationService
- (void)didReceiveNotificationRequest:(UNNotificationRequest *)request withContentHandler:(void (^)(UNNotificationContent * _Nonnull))contentHandler {
self.contentHandler = contentHandler;
self.bestAttemptContent = [request.content mutableCopy];
// Modify the notification content here...
self.bestAttemptContent.title = [NSString stringWithFormat:@"%@ [modified]", self.bestAttemptContent.title];
//========================//
//配置百度语音
[self configureSDK];
NSMutableDictionary *userInfo = [NSMutableDictionary dictionaryWithDictionary:request.content.userInfo];
[self dealWithUserInfo:userInfo];
//=========================//
self.contentHandler(self.bestAttemptContent);
}
- (void)serviceExtensionTimeWillExpire {
// Called just before the extension will be terminated by the system.
// Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
self.contentHandler(self.bestAttemptContent);
}
#pragma mark - private
- (void)dealWithUserInfo:(NSDictionary *)userInfo
{
/*
根据后台 API 保存语音播报设置，
获取 Userdefault 决定是播报文字还是音频文件。
APP 跟扩展 Service 想公用 UserDefault必须用到 APP Group ID
*/
BOOL isPlayAudio = [CommonMethod getIsPlayAudio];
if (isPlayAudio)
{
dispatch_async(dispatch_get_main_queue(), ^{
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(kTime * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
//播放音频文件
NSURL *mediaURL = [[NSBundle mainBundle] URLForResource:@"test" withExtension:@"caf"];
//后台继续播放
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
[[AVAudioSession sharedInstance] setActive:YES error:nil];
//播放
AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:mediaURL error:nil];
[audioPlayer play];
});
});
}
else
{
NSString *msg = @"";
id content = userInfo[@"aps"][@"alert"];
if ([content isKindOfClass:[NSDictionary class]])
{
msg = content[@"body"];
}
dispatch_async(dispatch_get_main_queue(), ^{
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(kTime * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
//百度语音TTS
[[BDSSpeechSynthesizer sharedInstance] speakSentence:msg withError:nil];
});
});
}
}
#pragma mark - 百度语音TTS
- (void)configureSDK
{
[self configureOnlineTTS];
}
- (void)configureOnlineTTS
{
[[BDSSpeechSynthesizer sharedInstance] setApiKey:API_KEY withSecretKey:SECRET_KEY];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
}
@end
写到这里基本OK了，剩下的就是调试，调试步骤：
1、run宿主APP
2、run通知扩展Target
3、APP退到后台
4、推送通知
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iOS12.1 语音播报问题我已经解决了。没解决的慢慢折腾吧！！！（群号：群号:286380794）