Implementation of simple push notifications (push Notification) on iOS

<span id="Label3"></p><p><p>http://blog.csdn.net/daydreamingboy/article/details/7977098</p></p><p><p></p></p>Implementation of simple push notifications (push Notification) on iOS<p><p></p></p><p align="left"><p align="left">According to this very good tutorial (http://www.raywenderlich.com/3443/apple-push-notification-services-tutorial-part-12), combine your own practice, write down a little note, For reference only:)</p></p><p><p>Due to the length of the space, I list a simple directory, as follows</p></p><p><p>1) Understanding the Apple push notification mechanism</p></p><p><p>2) Create App ID</p></p><p><p>3) Create a CSR file</p></p><p><p>4) Create Provisioning Profile</p></p><p><p>5) get device Token in Xcode project</p></p><p><p>6) Create A. Pem file</p></p><p><p>7) Write PHP server code, send notifications</p></p>1. Understanding the Apple push notification mechanism<p><p></p></p><p align="left"><p align="left"></p></p><p><p>From the flowchart above, you can see an app that can receive push notifications, which requires 3 things:</p></p><p><p></p></p> <ul> <ul> <li>App ID (uniquely identifies an app Program)</li> <li>Provisioning profile (app release requires it, so push notifications can only be tested on the real machine)</li> <li>Device Token (which is unique to the push notification Feature)</li> </ul> </ul><p><p></p></p><p><p>The server side that can push notifications is 2 things:</p></p><p><p></p></p> <ul> <ul> <li>SSL Certificate</li> <li>Private Key</li> </ul> </ul><p><p></p></p><p><p>(because I am not clear about the information encryption, so here does not explain)</p></p><p><p></p></p><p><p>It is important to note that the APNs (applepush Notification Service) Server completes the function of sending device token and notification content, and the 2 actions are passive, that is, the first action was initiated by the app, The second is the server that initiated the push Notification.</p></p><p><p>For me, there is so much to Understand. Below I follow the reference article for the Experiment.</p></p><p><p></p></p>2. Create app ID<p><p></p></p><p align="left"><p align="left">After clicking on the "New App ID" button, the following</p></p><p align="left"><p align="left"></p></p><p align="left"><p align="left">Description content can be arbitrary, bundle Identifier (app ID Suffix) must and the bundle Identifier when creating the app project, as follows</p></p><p align="left"><p align="left"></p></p><p align="left"><p align="left">Click "Submit", click on the left navigation "app ids" to find the newly created app ID, as follows</p></p><p align="left"><p align="left"></p></p><p align="left"><p align="left"></p></p><p><p>After clicking "Configure", the following</p></p><p><p></p></p><p align="left"><p align="left"></p></p><p><p>Tick "Enable for Apple Push Notification service" and then click the Red "Configure" button, where you only get the certificate for development temporarily. A dialog box POPs up, as follows</p></p><p><p></p></p><p align="left"><p align="left">After clicking "Continue", we will upload a CSR file as follows</p></p><p align="left"><p align="left"></p></p><p align="left"><p align="left"></p></p><p><p>Use the Keychain Access (keychainaccess) application below to create the required CSR file (. certsigningrequest File)</p></p><p><p></p></p>3. Create a CSR file<p><p>Keychain access is located in The/applications/utilities directory, open it as follows</p></p><p><p></p></p><p align="left"><p align="left">Then the popup window is as Follows.</p></p><p align="left"><p align="left"></p></p><p align="left"><p align="left">UserEmail address Feel free to write, Common name is the same, note tick "Save to disks", and then click "Continue". Quickly generate the required files to find it.</p></p><p align="left"><p align="left"></p></p><p align="left"><p align="left"></p></p><p align="left"><p align="left">Go back to the page below and upload the Helloremotenotification.certsigningrequest file that you just created with Keychainaccess.</p></p><p><p></p></p><p align="left"><p align="left"></p></p><p><p>Soon the required certificate will be ok, as follows</p></p><p><p></p></p><p align="left"><p align="left"></p></p><p><p>Click "Continue" and then click "done".</p></p><p><p></p></p><p align="left"><p align="left"></p></p><p><p>Found the status above is enabled, and more "Download" button, click on it, Download a file called "aps_development.cer". Double-click to open it,</p></p><p><p></p></p><p align="left"><p align="left">Locate the private key named "helloremotenotification" in the "Keys" column (note that private key, not public key), Right-click on it and select "Export" Helloremotenotification "..." to export A. P12 file (requires a password) as follows (3 files in Total)</p></p><p align="left"><p align="left"></p></p><p align="left"><p align="left"></p></p><p><p>The following starts with The. P12 file that you just created, creating a profile provision file</p></p><p><p></p></p>4. Create a Provisioningprofile file<p><p></p></p><p align="left"><p align="left"></p></p><p><p>In the, click on the "New profile" button, as follows</p></p><p><p></p></p><p align="left"><p align="left"></p></p><p><p>Fill in "profile Name", tick "Certificate", "App id" to select the correct ID that we created previously, i.e. pushnotification; the last association needs to test the real device. Click "Submit", as follows</p></p><p><p></p></p><p align="left"><p align="left"></p></p><p><p>Can see more than one provisioning profile file, Click the "Download" button to download it, then we produced a total of 4 files, as follows</p></p><p><p></p></p><p align="left"><p align="left"></p></p><p><p>Double-click the "pushnotification.mobileprovision" file, or drag it into Xcode.</p></p><p><p></p></p><p align="left"><p align="left"></p></p><p><p>In xcode, Locate the code signing entry, for example, to drag a debug configuration powertrain into the provisioning profile corresponding iphone Developer.</p></p><p><p></p></p>5. Get device Token in Xcode project<p><p></p></p><p align="left"><p align="left"></p></p><p><p>In the Application:didfinishlaunchingwithoptions: method, register to use remote Notification.</p></p><p><p></p></p><p align="left"><p align="left"></p></p><p><p>Add 2 methods, application:didregisterforremotenotificationswithdevicetoken: and Application: Didfailtoregisterforremotenotificationswitherror: used to obtain device token and print Errors. Run our built helloremotenotification project, if the above steps are correct, you should print out device Token, as follows</p></p><p><p></p></p><p align="left"><p align="left"></p></p><p><p>There may also be errors such as</p></p><p><p></p></p><p align="left"><p align="left"></p></p><p><p></p></p>6. Create A. Pem file<p><p></p></p> <ul> <ul> <li>Convert an existing. cer file to A. Pem file</li> <li>Convert existing. p12 files to. Pem file (password required)</li> <li>finally, Merge the above 2. Pem files into 1. PEM files (you need to enter a new Password)</li> </ul> </ul><p><p></p></p><p align="left"><p align="left"></p></p><p align="left"><p align="left"></p></p><p align="left"><p align="left">Aps_development.cer->helloremotenotification.pem (renamed as Helloremotenotificationcert.pem Below)</p></p><p><p>Helloremotenotification.p12-> Helloremotenotificationkey.pem</p></p><p><p></p></p><p align="left"><p align="left"></p></p><p><p>Helloremotenotification.pem +helloremotenotificationkey.pem merged into CK2.PEM</p></p><p><p></p></p>7, Write PHP server code, send notifications<strong><strong>[php]</strong></strong>View Plaincopy <ol class="dp-c" start="1"> <li class="alt"><li class="alt"><?php</li></li> <li><li></li></li> <li class="alt"><li class="alt"><span class="comment">Put your device token here (without spaces):</span></li></li> <li><li><span class="vars">$deviceToken = <span class="string">' Device token> ' of the <xcode console output; </span></span></li></li> <li class="alt"><li class="alt"></li></li> <li><li><span class="comment">Put your private key ' s passphrase here:</span></li></li> <li class="alt"><li class="alt"><span class="vars">$passphrase = <span class="string">' < last password entered > '; </span></span></li></li> <li><li></li></li> <li class="alt"><li class="alt"><span class="comment">Put your alert message here:</span></li></li> <li><li><span class="vars">$message = <span class="string">' My first push notification! '; </span></span></li></li> <li class="alt"><li class="alt"></li></li> <li><li><span class="comment">////////////////////////////////////////////////////////////////////////////////</span></li></li> <li class="alt"><li class="alt"></li></li> <li><li><span class="vars">$ctx = Stream_context_create ();</span></li></li> <li class="alt"><li class="alt">Stream_context_set_option (<span class="vars">$ctx, <span class="string">' SSL ', <span class="string">' Local_cert ', <span class="string">' Ck2.pem '); </span></span></span></span></li></li> <li><li>Stream_context_set_option (<span class="vars">$ctx, <span class="string">' SSL ', <span class="string">' passphrase ', <span class="vars">$passphrase); </span></span></span></span></li></li> <li class="alt"><li class="alt"></li></li> <li><li><span class="comment">Open a connection to the APNS server</span></li></li> <li class="alt"><li class="alt"><span class="vars">$fp = Stream_socket_client (</span></li></li> <li><li><span class="string">' ssl://gateway.sandbox.push.apple.com:2195 ', <span class="vars">$err,</span> </span></li></li> <li class="alt"><li class="alt"><span class="vars">$errstr, stream_client_connect|.  stream_client_persistent, <span class="vars">$ctx); </span></span></li></li> <li><li></li></li> <li class="alt"><li class="alt"><span class="keyword">If (! <span class="vars"> $fp)</span></span></li></li> <li><li><span class="func">exit (<span class="string">"Failed to Connect: $err $errstr".  php_eol); </span></span></li></li> <li class="alt"><li class="alt"></li></li> <li><li><span class="func">Echo <span class="string">' Connected to APNS '.  php_eol; </span></span></li></li> <li class="alt"><li class="alt"></li></li> <li><li><span class="comment">Create the payload body</span></li></li> <li class="alt"><li class="alt"><span class="vars">$body [<span class="string">' aps '] = <span class="keyword">Array (</span> </span></span></li></li> <li><li><span class="string">' alert ' = <span class="vars">$message,</span> </span></li></li> <li class="alt"><li class="alt"><span class="string">' sound ' = ' <span class="string">default '</span> </span></li></li> <li><li>);</li></li> <li class="alt"><li class="alt"></li></li> <li><li><span class="comment">Encode the payload as JSON</span></li></li> <li class="alt"><li class="alt"><span class="vars">$payload = Json_encode (<span class="vars">$body); </span></span></li></li> <li><li></li></li> <li class="alt"><li class="alt"><span class="comment">Build the binary notification</span></li></li> <li><li><span class="vars">$msg = CHR (0). pack (' n ', ' + '). pack (' <span class="func"><span class="string"><span class="string">h* ', <span class="vars">$deviceToken). Pack (<span class="string">' n ', <span class="func">strlen (<span class="vars">$payload)).  <span class="vars">$payload; </span></span></span></span></span></span></span></span></span></li></li> <li class="alt"><li class="alt"></li></li> <li><li><span class="comment">Send it to the server</span></li></li> <li class="alt"><li class="alt"><span class="vars">$result = fwrite (<span class="vars">$fp, <span class="vars">$msg, <span class="func">strlen (<span class="vars">$msg)); </span></span></span></span></span></li></li> <li><li></li></li> <li class="alt"><li class="alt"><span class="keyword">If (! <span class="vars"> $result)</span></span></li></li> <li><li><span class="func">echo <span class="string">' Message not delivered '.  php_eol; </span></span></li></li> <li class="alt"><li class="alt"><span class="keyword">Else</span></li></li> <li><li><span class="func">Echo <span class="string">' Message successfully delivered '.  php_eol; </span></span></li></li> <li class="alt"><li class="alt"></li></li> <li><li><span class="comment">Close the connection to the server</span></li></li> <li class="alt"><li class="alt">Fclose (<span class="vars">$fp); </span></li></li> </ol><p><p>Note: Modify the following two lines of code</p></p><p align="left"><p align="left"></p></p><strong><strong>[php]</strong></strong>View Plaincopy <ol class="dp-c" start="1"> <ol class="dp-c" start="1"> <li class="alt"><span class="vars">$deviceToken = <span class="string">' Device token> ' of the <xcode console output; </span></span></li> <li></li> <li class="alt"><span class="comment">Put your private key ' s passphrase here:</span></li> <li><span class="vars">$passphrase = <span class="string">' < last password entered > '; </span></span></li> <li class="alt">......</li> <li>......</li> <li class="alt">Stream_context_set_option (<span class="vars">$ctx, <span class="string">' SSL ', <span class="string">' Local_cert ', <span class="string">' Ck2.pem '); </span></span></span></span></li> </ol> </ol><p><p></p></p><p><p>Run the above PHP script, as follows</p></p><p><p></p></p><p align="left"><p align="left"></p></p><p><p>You can see the push notifications received on the ipad, as below, to show that the practice is successful!</p></p><p><p></p></p><p align="left"><p align="left"></p></p><p><p></p></p><p><p>Resources:</p></p><p><p>1, http://www.raywenderlich.com/3443/apple-push-notification-services-tutorial-part-12</p></p><p><p>Implementation of simple push notifications (push Notification) on iOS</p></p></span>