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copied!<p>I write a PhoneGap plug-in use <a href="http://developers.facebook.com/docs/reference/api/" rel="nofollow">Graph API</a> to post photos from iPhone/iPad to Facebook. This plug-in can also post photo with Facebook place id (means it can <strong>Checkin Facebook with photo</strong>) and works fine on iOS 6.0.</p> <p>It's based on PhoneGap 2.1 and <a href="https://github.com/davejohnson/phonegap-plugin-facebook-connect" rel="nofollow">phonegap-plugin-facebook-connect</a>, and <strong>not need</strong> any middle host, maybe it can solve your problem ;)</p> <p>First, the <strong>PhotoCheckin.h</strong> is...</p> <pre><code>#import <Foundation/Foundation.h> #import "Facebook.h" #import "FBConnect.h" #import <Cordova/CDV.h> @interface PhotoCheckin : CDVPlugin <FBDialogDelegate> - (void) sendPost:(CDVInvokedUrlCommand*)command; @end </code></pre> <p>Second, <strong>PhotoCheckin.m</strong> as follow.</p> <pre><code>#import "PhotoCheckin.h" #import "FBSBJSON.h" @implementation PhotoCheckin - (void) sendPost:(CDVInvokedUrlCommand*)command { UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:[command.arguments objectAtIndex:0]]]]; NSString* message = [command.arguments objectAtIndex:1]; NSString* place_id = [command.arguments objectAtIndex:2]; NSLog(@"%@",message); NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:image, @"source",message,@"message",place_id, @"place", nil]; if (FBSession.activeSession.isOpen) { [FBRequestConnection startWithGraphPath:@"me/photos" parameters:params HTTPMethod:@"POST" completionHandler:^(FBRequestConnection *connection, id result, NSError *error) { NSString *resultStr = nil; if (error) { //resultStr = [NSString stringWithFormat:@"error: domain = %@, code = %d",error.domain, error.code]; resultStr = [[CDVPluginResult resultWithStatus:CDVCommandStatus_JSON_EXCEPTION messageAsString:[NSString stringWithFormat:@"error: domain = %@, code = %d",error.domain, error.code]] toErrorCallbackString:command.callbackId]; }else{ //resultStr = [NSString stringWithFormat:@"Posted action, id: %@",[result objectForKey:@"id"]]; resultStr = [[CDVPluginResult resultWithStatus:CDVCommandStatus_OK messageAsString:[NSString stringWithFormat:@"Posted action, id: %@",[result objectForKey:@"id"]]] toSuccessCallbackString:command.callbackId]; } //[[[UIAlertView alloc] initWithTitle:@"Check-in Result" message:resultStr delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil] show]; [self writeJavascript:resultStr]; }]; }else{ NSLog(@"no active session"); NSArray *permissions = [[NSArray alloc] initWithObjects:@"publish_stream",nil]; // more "permissions strings" at http://developers.facebook.com/docs/authentication/permissions/ // OPEN Session [FBSession openActiveSessionWithPermissions:permissions allowLoginUI:YES completionHandler:^(FBSession *session, FBSessionState status, NSError *error) { if (FB_ISSESSIONOPENWITHSTATE(status)) { [[[UIAlertView alloc] initWithTitle:@"Got FB session!" message:@"please check-in again." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil] show]; }else{ [self writeJavascript:[[CDVPluginResult resultWithStatus:CDVCommandStatus_JSON_EXCEPTION messageAsString:[NSString stringWithFormat:@"error: domain = %@, code = %d",error.domain, error.code]] toErrorCallbackString:command.callbackId]]; /*[[[UIAlertView alloc] initWithTitle:@"Login Fail" message:[NSString stringWithFormat: @"error: domain = %@, code = %d", error.domain, error.code] delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil] show];*/ } }]; } } @end </code></pre> <p>Notes: this method will callback when posted, some code lines were commented out, which can make alert to users.</p> <p>Third, the <strong>PhotoCheckin.js</strong> as follow.</p> <pre><code>var PhotoCheckin = { sendPost: function(photo_uri, message, place_id, success, fail) { return Cordova.exec(success, fail, "PhotoCheckin", "sendPost", [photo_uri, message, place_id]); } } </code></pre> <p>Finally, when we went to use the plug-in, we write js as follow. (in .html/.js)</p> <pre><code>PhotoCheckin.sendPost(photo_uri, message, place_id, function(result){ navigator.notification.confirm( 'message: '+result, null, 'Photo Posted', 'OK' ); }, function(error){ navigator.notification.confirm( 'message: '+error, null, 'Photo Fail', 'OK' ); } ); </code></pre> <p>Notes: <strong>photo_uri</strong> is the photo's uri (e.g. file:///...), <strong>message</strong> is user's comment and <strong>place_id</strong> is the place id in Facebook (e.g. 106522332718569).</p> <p>And like other plug-ins, we must to edit <em>Resources/Cordova.plist</em>, add <strong>photoCheckin</strong> as key and <strong>PhotoCheckin</strong> as value in plugins. And put <strong>PhotoCheckin.h</strong>&<strong>PhotoCheckin.m</strong> to folder named <em>Plugins</em>, include <strong>PhotoCheckin.js</strong> file in your js code.</p> <p>have fun! from 台灣 :)</p>

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