问题：
iOS没有收到来自GCM的任何远程通知，但找不到与此相关的任何信息。
第一次实施推送通知，不确定问题的原因是什么。
情况：
我目前正在使用iOS版本的应用程序，该应用程序使用GCM进行推送通知。 Android上收到的通知很正常，但在iOS上似乎没有接收到通知。
当我运行应用程序时，控制台向我显示一切正常，有令牌，连接到GCM并订阅主题
app [579：45511]注册令牌： bk3RNwTe3H0：CI2k_HHwgIpoDKCIZvvDMExUdFQ3P1pLTQ / 8T-5QNiXbYwZYEWiSFD-frQKlsV8lgI
app [579：45511]连接到GCM
app [579：45511]已经订阅了/ topics / global
但是，它没有收到任何通知，当我下载通知中心或拉出控制中心时，控制台中会出现以下消息
app [579：45511]无法连接到GCM：操作无法完成。 （com.google.gcm错误2001年。）
除了提到......之外，它并没有告诉我什么。
///缺少KeyPair kGGLInstanceIDOperationErrorCodeMissingKeyPair = 2001，
另一方面，当我使用多任务功能将其发送到后台并将其恢复时，我再次得到这个：
app [579：45511]连接到GCM
app [579：45511]已经订阅了/ topics / global
设定：
我已经按照GCM说明在iOS中进行了设置，甚至还提到了GcmExample.xcodeproj来实现（代码完全相同）。
为“必需的背景模式”设置info.plist - ＆gt; '应用程序下载内容以响应推送通知'
遇到另一个关于GCM和IP未被列入白名单的stackoverflow问题（现在找不到），但认为这不是问题。
代码：
#import "AppDelegate.h"
@interface AppDelegate ()
@property(nonatomic, strong) void (^registrationHandler) (NSString *registrationToken, NSError *error);
@property(nonatomic, assign) BOOL connectedToGCM;
@property(nonatomic, strong) NSString* registrationToken;
@property(nonatomic, assign) BOOL subscribedToTopic;
@end
NSString *const SubscriptionTopic = @"/topics/global";
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
// [START_EXCLUDE]
_registrationKey = @"onRegistrationCompleted";
_messageKey = @"onMessageReceived";
// Configure the Google context: parses the GoogleService-Info.plist, and initializes
// the services that have entries in the file
NSError* configureError;
[[GGLContext sharedInstance] configureWithError:&configureError];
if (configureError != nil) {
NSLog(@"Error configuring the Google context: %@", configureError);
}
_gcmSenderID = [[[GGLContext sharedInstance] configuration] gcmSenderID];
// [END_EXCLUDE]
// Register for remote notifications
UIUserNotificationType allNotificationTypes =
(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge);
UIUserNotificationSettings *settings =
[UIUserNotificationSettings settingsForTypes:allNotificationTypes categories:nil];
[[UIApplication sharedApplication] registerUserNotificationSettings:settings];
[[UIApplication sharedApplication] registerForRemoteNotifications];
// [END register_for_remote_notifications]
// [START start_gcm_service]
[[GCMService sharedInstance] startWithConfig:[GCMConfig defaultConfig]];
// [END start_gcm_service]
__weak typeof(self) weakSelf = self;
// Handler for registration token request
_registrationHandler = ^(NSString *registrationToken, NSError *error){
if (registrationToken != nil) {
weakSelf.registrationToken = registrationToken;
NSLog(@"Registration Token: %@", registrationToken);
[weakSelf subscribeToTopic];
NSDictionary *userInfo = @{@"registrationToken":registrationToken};
[[NSNotificationCenter defaultCenter] postNotificationName:weakSelf.registrationKey
object:nil
userInfo:userInfo];
} else {
NSLog(@"Registration to GCM failed with error: %@", error.localizedDescription);
NSDictionary *userInfo = @{@"error":error.localizedDescription};
[[NSNotificationCenter defaultCenter] postNotificationName:weakSelf.registrationKey
object:nil
userInfo:userInfo];
}
};
[[NSNotificationCenter defaultCenter] postNotificationName:_messageKey
object:nil
userInfo:nil];
return YES;
}
- (void)subscribeToTopic {
// If the app has a registration token and is connected to GCM, proceed to subscribe to the
// topic
if (_registrationToken && _connectedToGCM) {
[[GCMPubSub sharedInstance] subscribeWithToken:_registrationToken
topic:SubscriptionTopic
options:nil
handler:^(NSError *error) {
if (error) {
// Treat the "already subscribed" error more gently
if (error.code == 3001) {
NSLog(@"Already subscribed to %@",
SubscriptionTopic);
} else {
NSLog(@"Subscription failed: %@",
error.localizedDescription);
}
} else {
self.subscribedToTopic = true;
NSLog(@"Subscribed to %@", SubscriptionTopic);
}
}];
}
}
- (void)applicationWillResignActive:(UIApplication *)application {
// Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
// Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}
// [START disconnect_gcm_service]
- (void)applicationDidEnterBackground:(UIApplication *)application {
// Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
// If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
[[GCMService sharedInstance] disconnect];
// [START_EXCLUDE]
_connectedToGCM = NO;
// [END_EXCLUDE]
}
// [END disconnect_gcm_service]
- (void)applicationWillEnterForeground:(UIApplication *)application {
// Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
}
- (void)applicationDidBecomeActive:(UIApplication *)application {
// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
// Connect to the GCM server to receive non-APNS notifications
[[GCMService sharedInstance] connectWithHandler:^(NSError *error) {
if (error) {
NSLog(@"Could not connect to GCM: %@", error.localizedDescription);
} else {
_connectedToGCM = true;
NSLog(@"Connected to GCM");
// [START_EXCLUDE]
[self subscribeToTopic];
// [END_EXCLUDE]
}
}];
}
// [END connect_gcm_service]
- (void)applicationWillTerminate:(UIApplication *)application {
// Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}
// [START receive_apns_token]
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
// [END receive_apns_token]
// [START get_gcm_reg_token]
// Start the GGLInstanceID shared instance with the default config and request a registration
// token to enable reception of notifications
[[GGLInstanceID sharedInstance] startWithConfig:[GGLInstanceIDConfig defaultConfig]];
_registrationOptions = @{kGGLInstanceIDRegisterAPNSOption:deviceToken,
kGGLInstanceIDAPNSServerTypeSandboxOption:@YES};
[[GGLInstanceID sharedInstance] tokenWithAuthorizedEntity:_gcmSenderID
scope:kGGLInstanceIDScopeGCM
options:_registrationOptions
handler:_registrationHandler];
// [END get_gcm_reg_token]
}
// [START receive_apns_token_error]
- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {
NSLog(@"Registration for remote notification failed with error: %@", error.localizedDescription);
// [END receive_apns_token_error]
NSDictionary *userInfo = @{@"error" :error.localizedDescription};
[[NSNotificationCenter defaultCenter] postNotificationName:_registrationKey
object:nil
userInfo:userInfo];
}
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
NSLog(@"Notification received: %@", userInfo);
// This works only if the app started the GCM service
[[GCMService sharedInstance] appDidReceiveMessage:userInfo];
// Handle the received message
// [START_EXCLUDE]
[[NSNotificationCenter defaultCenter] postNotificationName:_messageKey
object:nil
userInfo:userInfo];
// [END_EXCLUDE]
}
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))handler {
NSLog(@"Notification received: %@", userInfo);
// This works only if the app started the GCM service
[[GCMService sharedInstance] appDidReceiveMessage:userInfo];
// Handle the received message
// Invoke the completion handler passing the appropriate UIBackgroundFetchResult value
// [START_EXCLUDE]
[[NSNotificationCenter defaultCenter] postNotificationName:_messageKey
object:nil
userInfo:userInfo];
handler(UIBackgroundFetchResultNoData);
// [END_EXCLUDE]
}
// [END ack_message_reception]
// [START on_token_refresh]
- (void)onTokenRefresh {
// A rotation of the registration tokens is happening, so the app needs to request a new token.
NSLog(@"The GCM registration token needs to be changed.");
[[GGLInstanceID sharedInstance] tokenWithAuthorizedEntity:_gcmSenderID
scope:kGGLInstanceIDScopeGCM
options:_registrationOptions
handler:_registrationHandler];
}
// [END on_token_refresh]
@end
更新
后端php代码发送GCM消息
//------------------------------
// Payload data you want to send
// to Android device (will be
// accessible via intent extras)
//------------------------------
$msg = addslashes($_POST["msg"]);
//------------------------------
// The recipient registration IDs
// that will receive the push
// (Should be stored in your DB)
//
// Read about it here:
// http://developer.android.com/google/gcm/
//------------------------------
//------------------------------
// Call our custom GCM function
//------------------------------
sendGoogleCloudMessage( $msg );
echo "send";
//------------------------------
// Define custom GCM function
//------------------------------
function sendGoogleCloudMessage( $msg )
{
//------------------------------
// Replace with real GCM API
// key from Google APIs Console
//
// https://code.google.com/apis/console/
//------------------------------
$apiKey = 'abc';
//------------------------------
// Define URL to GCM endpoint
//------------------------------
$url = 'https://android.googleapis.com/gcm/send';
//------------------------------
// Set CURL request headers
// (Authentication and type)
//------------------------------
$headers = array(
'Authorization: key=' . $apiKey,
'Content-Type: application/json'
);
//------------------------------
// Initialize curl handle
//------------------------------
$ch = curl_init();
//------------------------------
// Set URL to GCM endpoint
//------------------------------
curl_setopt( $ch, CURLOPT_URL, $url );
//------------------------------
// Set request method to POST
//------------------------------
curl_setopt( $ch, CURLOPT_POST, true );
//------------------------------
// Set our custom headers
//------------------------------
curl_setopt( $ch, CURLOPT_HTTPHEADER, $headers );
//------------------------------
// Get the response back as
// string instead of printing it
//------------------------------
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
//------------------------------
// Set post data as JSON
//------------------------------
$post_json_encode = '{"data":{"message":"' . $msg . '"},"to":"/topics/global"}';
curl_setopt( $ch, CURLOPT_POSTFIELDS, $post_json_encode );
//------------------------------
// Actually send the push!
//------------------------------
$result = curl_exec( $ch );
//------------------------------
// Error? Display it!
//------------------------------
if ( curl_errno( $ch ) )
{
echo 'GCM error: ' . curl_error( $ch );
}
//------------------------------
// Close curl handle
//------------------------------
curl_close( $ch );
//------------------------------
// Debug GCM response
//------------------------------
$arr_result = json_decode($result, true);
foreach ($arr_result as $name => $value) {
echo "<p>".$name .": ". $value ."</p>";
}
}
答案 0 :(得分：4)
您获得的错误2001不是kGGLInstanceIDOperationErrorCodeMissingKeyPair，而是kGCMServiceErrorCodeAlreadyConnected。后者意味着您已经连接到GCM。为了更好地调试这个，我会尝试向设备令牌发送显示通知，即发送此
$ post_json_encode =＆＃39; {＆＃34; notice＆＃34;：{＆＃34; body＆＃34;：＆＃34;＆＃39; 。 $ msg。 ＆＃39;＆＃34;}＆＃34;至＆＃34;：＆＃34; /主题/全球＆＃34;}＆＃39 ;;
理论上，当您的应用处于前台时，您应该连接到GCM，当您转到后台时，应断开连接。然后，当您到达前台时，可以再次重新连接。
data payload和notification payload适用于iOS和＆amp; Android系统。在iOS上，区别在于通过APNS发送通知有效负载，而通过GCM自己的连接发送数据有效负载，该连接仅在应用处于前台时才存在。在Android通知中，有效负载是最近添加的新显示通知内容。
答案 1 :(得分：0)
我在iOS上遇到了同样的问题。然后我在PushBots网站上找到了解决方案。它现在对我来说很好。
在XCode中转到目标＆gt;构建设置＆gt;代码签名身份 并确保它不是自动的并设置为链接到应用程序ID的配置文件匹配证书，例如