iPhone應用中APNS推送通知流程代碼實現案例是本文要介紹的內容，主要是如何來實現APNS的推送通知，具體內容來看本文詳細代碼。

1. 將app注冊notification裡面, 並從APNS上獲取測試機的deviceToken.  

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

 
    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound)];    

 
        // other codes here.      

 
 
    return YES;  

 
 
}  

 
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {  

    NSLog(@"deviceToken: %@", deviceToken);  
 
}  

 
- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {  

 
 
    NSLog(@"Error in registration. Error: %@", error);  

 
 
}  

 
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo  

 
 
{  

 
    NSLog(@" 收到推送消息 ： %@",[[userInfo objectForKey:@"aps"] objectForKey:@"alert"]);  

 
 
    if ([[userInfo objectForKey:@"aps"] objectForKey:@"alert"]!=NULL) {  

 
 
        UIAlertView* alert = [[UIAlertView alloc] initWithTitle:@"推送通知"  

 
 
                                                        message:[[userInfo objectForKey:@"aps"] objectForKey:@"alert"]  

 
 
                                                       delegate:self  

 
 
                                              cancelButtonTitle:@" 關閉"  

 
 
                                              otherButtonTitles:@" 更新狀態",nil];  

 
 
        [alert show];  

 
 
        [alert release];  

 
 
    }  

 
 
} 

 
 

啟動程序，將app注冊到通知項後，在console裡面找到打印的deviceToken：

 
 

 
 
deviceToken: <6974ac11 870e09fa 00e2238e 8cfafc7d 2052e342 182f5b57 fabca445 42b72e1b> 

 
 

2、生成app在服務端需要的許可證

（1）進入Provisioning Portal, 下載Certificates在development下的證書。

（2） 找到需要測試的app id,然後enable它在development下的Apple Push Notification service: Development Push SSL Certificate。需要輸入1）中的簽名證書才可以生成一個aps_developer_identity.cer.

（3) 雙擊aps_developer_identity.cer，會打開系統的key chain. 在My certificates下找到Apple Development Push Services。需要為certificate和它之下的private key各自export出一個.p12文件。(會出現設置密碼過程)

（4）需要將上面的2個.p12文件轉成.pem格式：

 
 

 
 
openssl pkcs12 -clcerts -nokeys -out cert.pem -in cert.p12  

 
 
openssl pkcs12 -nocerts -out key.pem -in key.p12 

 
 

（5）如果需要對 key不進行加密：

 
 

 
 
openssl rsa -in key.pem -out key.unencrypted.pem 

 
 

（6）然後就可以 合並兩個.pem文件, 這個ck.pem就是服務端需要的證書了。

 
 

 
 
cat cert.pem key.unencrypted.pem > ck.pem 

 
 

3、服務端push通知到ANPS. 在cocoachina找到了兩種方法:

（1）php驅動。需要將ck.pem和php腳本放到server 上。全部的php代碼是：

 
 

 
 
<?php  

 
 
$deviceToken = '6974ac11 870e09fa 00e2238e 8cfafc7d 2052e342 182f5b57 fabca445 42b72e1b';  

 
 
$pass = '123456';   // Passphrase for the private key (ck.pem file)  

 
 
   

 
 
// Get the parameters from http get or from command line  

 
 
$message = $_GET['message'] or $message = $argv[1] or $message = 'A test message from worldcup';  

 
 
$badge = (int)$_GET['badge'] or $badge = (int)$argv[2];  

 
 
$sound = $_GET['sound'] or $sound = $argv[3];  

 
 
   

 
 
// Construct the notification payload  

 
 
$body = array();  

 
 
$body['aps'] = array('alert' => $message);  

 
 
if ($badge)  

 
 
  $body['aps']['badge'] = $badge;  

 
 
if ($sound)  

 
 
  $body['aps']['sound'] = $sound;  

 
/* End of Configurable Items */  

 
$ctx = stream_context_create();  

 
 
stream_context_set_option($ctx, 'ssl', 'local_cert', 'ck.pem');    

 
 
// assume the private key passphase was removed.  

 
 
stream_context_set_option($ctx, 'ssl', 'passphrase', $pass);  

 
// connect to apns  

 
 
$fp = stream_socket_client('ssl://gateway.sandbox.push.apple.com:2195', $err, $errstr, 60, STREAM_CLIENT_CONNECT, $ctx);  

 
 
if (!$fp) {  

 
 
    print "Failed to connect $err $errstrn";  

 
 
    return;  

 
 
}  

 
 
else {  

 
 
   print "Connection OKn<br/>";  

 
 
}  

 
// send message  

$payload = json_encode($body);  

$msg = chr(0) . pack("n",32) . pack('H*', str_replace(' ', '', $deviceToken)) . pack("n",strlen($payload)) . $payload;  

print "Sending message :" . $payload . "n";    

 
fwrite($fp, $msg);  

fclose($fp);  

 
?> 

請 求一次 http://127.0.0.1/apns /apns.php?message=A%20test%20message%20from%20localhost&badge=2& sound=received5.caf就 會向APNS進行一次推送。我的請求結果如下：

 
 
Connection OK  
 
Sending message :{"aps":{"alert":"A test message from localhost","badge":2,"sound":"received5.caf"}} 

（2）pushMeBaby 驅動。將aps_developer_identity.cer導入到project裡面，改名為apns.cer。

小結：iPhone應用中APNS推送通知流程代碼實現案例的內容介紹完了，希望通過本文的學習能對你有所幫助！
作者：馮京寶