本地通知？ [英] local notifications?
问题描述
我的应用程序主要是一个真正没有连接到互联网的服务器的客户端。它连接到Polycom编解码器并管理2个端点之间的视频通话。所以我的应用程序可以发送命令像结束调用，音量增加等等...
但是我的问题是这个。我需要某种通知，当一个来电发生和应用程序不在前台。
由于服务器没有互联网访问APNS /推送通知不会为我工作。我已经调查过这。这似乎让我的客户端运行，但是我不能做警告，因为我的应用程序是在后台。
My application is primarily a client for a server that really doesn't have a connection to the internet. It connects to a Polycom codec and manages the video calls between 2 endpoints. So my application can send commands like end call, volume up, etc... However my problem is this. I need some kind of notification when an incoming call happens and the application is not in the foreground. Since the server does not have internet access APNS/push notifications will not work for me. I have looked into doing something like this. Which does seem to keep my client running however I cannot do an alert since my application is in the background.
除了如何解决我的问题的基础我的问题：
So besides the basics of how to fix my problem my questions are:
我可以使用链接中列出的技术将我的应用程序带到前台（做类似下面的操作）。我可以从日志中看到，这段代码让我的代码运行。我知道我的while循环是不对的，最后我需要KVO，但无论如何不应该影响答案。 （我不明白的一件事是这是保持我的整个应用程序运行，而不是只是我在那里有类bcClient？）
Can I bring my application to the foreground using the technique listed in the link (doing something like what I'm doing below). I can see from the logs that this code keeps my code running. I know my while loop is not right and in the end I would need KVO but regardless that shouldn't effect the answer. (one thing I dont understand is this keeps my whole application running as opposed to just the class I have in there bcClient?)
- (void)applicationDidEnterBackground:(UIApplication *)application
{
[bcClient connect];
bgTask = [app beginBackgroundTaskWithExpirationHandler:expirationHandler];
// Start the long-running task and return immediately.
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
while(1) {
sleep(3);
NSLog(@"held join %d",bcClient.heldjoin);
if (bcClient.heldjoin == 602 || bcClient.heldjoin == 604 || bcClient.heldjoin == 513) {
NSLog(@"incoming call");
}
}
});
}
如果我无法将我的应用程序带到前台，通知本地（不需要APNS服务器）？
If I cannot bring my application to the foreground then is there anyways to push a notification locally (without the need for a APNS server)?
我有一个感觉这不是可能的，但我想我会问。
I have a feeling none of this is possible but I figured I would ask.
推荐答案
这是我的答案。这会使我的客户端应用程序在后台运行，并在来电时显示通知。
Here is my answer. This keeps my client application running in the background and shows a notification when a call comes in.
AppDelegate.h
@interface CameleonAppDelegate : NSObject <UIApplicationDelegate> {
CrestronClient *cClient;
CrestronControllerValues *CCV;
RootViewController *rootViewController;
CrestronValues *crestronValues;
UIBackgroundTaskIdentifier bgTask;
dispatch_block_t expirationHandler;
UIApplication* app;
BOOL showedCall;
}
@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (readonly, strong, nonatomic) NSManagedObjectContext *managedObjectContext;
@property (readonly, strong, nonatomic) NSManagedObjectModel *managedObjectModel;
@property (readonly, strong, nonatomic) NSPersistentStoreCoordinator *persistentStoreCoordinator;
- (void)saveContext;
- (NSURL *)applicationDocumentsDirectory;
-(void)save;
-(void)load;
- (void)backgroundHandler;
@end
AppDelegate.m（just didFinishLaunchingWithOptions 和 applicationDidEnterBackground ）
AppDelegate.m (just didFinishLaunchingWithOptions and applicationDidEnterBackground)
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
app = [UIApplication sharedApplication];
expirationHandler = ^{
[app endBackgroundTask:bgTask];
bgTask = UIBackgroundTaskInvalid;
bgTask = [app beginBackgroundTaskWithExpirationHandler:expirationHandler];
};
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSArray *keys = [NSArray arrayWithObjects:@"IPaddress", @"PortNumber",@"IPID", nil];
NSArray *objs = [NSArray arrayWithObjects:@"10.8.40.64", @"41794",@"3", nil];
//10.8.30.143 10.8.40.64
NSDictionary *dict = [NSDictionary dictionaryWithObjects:objs forKeys:keys];
[defaults registerDefaults:dict];
CCV = [CrestronControllerValues sharedManager];
[CCV setIpAddress:[defaults stringForKey:@"IPaddress"]];
[CCV setPortNumber:[defaults stringForKey:@"PortNumber"]];
[CCV setIPID:[defaults stringForKey:@"IPID"]];
cClient = [CrestronClient sharedManager];
rootViewController = [[RootViewController alloc]initWithNibName:@"RootViewController" bundle:nil];
self.window.rootViewController = rootViewController;
[self.window makeKeyAndVisible];
return YES;
}
- (void)applicationDidEnterBackground:(UIApplication *)application
{
showedCall = FALSE;
BOOL backgroundAccepted = [[UIApplication sharedApplication] setKeepAliveTimeout:600 handler:^{ [self backgroundHandler]; }];
if (backgroundAccepted)
{
NSLog(@"VOIP backgrounding accepted");
}
bgTask = [app beginBackgroundTaskWithExpirationHandler:^{
[app endBackgroundTask:bgTask];
bgTask = UIBackgroundTaskInvalid;
}];
// Start the long-running task
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
while (1) {
sleep(4);
//NSLog(@"BGTime left: %f", [UIApplication sharedApplication].backgroundTimeRemaining);
if ([rootViewController isIncomingCall] && showedCall != TRUE) {
UILocalNotification *localNotif = [[UILocalNotification alloc] init];
if (localNotif) {
localNotif.alertBody = [NSString stringWithFormat:@"Incoming Call."];
localNotif.alertAction = NSLocalizedString(@"Accept Call", nil);
localNotif.soundName = @"alarmsound.caf";
localNotif.applicationIconBadgeNumber = 1;
[application presentLocalNotificationNow:localNotif];
[localNotif release];
}
showedCall = TRUE;
}
}
});
}
- (void)backgroundHandler {
NSLog(@"### -->VOIP backgrounding callback");
bgTask = [app beginBackgroundTaskWithExpirationHandler:^{
[app endBackgroundTask:bgTask];
bgTask = UIBackgroundTaskInvalid;
}];
// Start the long-running task
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
while (1) {
NSLog(@"BGTime left: %f", [UIApplication sharedApplication].backgroundTimeRemaining);
[rootViewController isIncomingCall];
sleep(1);
}
});
}
这篇关于本地通知？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
