APNS : Pushing tweets to iPhone

see here :
http://arstechnica.com/apple/guides/2009/04/pushing-tweets-to-your-iphone-with-apple-push-notifications.ars

You can modify it to get the RSS feed as well. see code sample here

pushtweet.m Select all


while (1 > 0)
{

TreeNode *root = [[XMLParser sharedInstance] parseXMLFromURL: [NSURL URLWithString:URL_STRING]];
TreeNode *found = nil;
for (TreeNode *node in [root children])
{
if (![[node key] isEqualToString:@"channel"]) continue;
if ([[node key] isEqualToString:@"channel"])
{
found = nil;
for (TreeNode *node2 in [node children]) {
// [node2 dump];
if ([[node2 key] isEqualToString:@"item"]) {
found = node2;
break;
}
}
if (found) break;
}
}

if (found)
{
NSString *testString = [NSString stringWithFormat:@"%@:%@", [found leafForKey:@"title"], [found leafForKey:@"link"]];
NSString *prevString = [NSString stringWithContentsOfFile:TWEET_FILE encoding:NSUTF8StringEncoding error:nil];
if (![prevString isEqualToString:testString])
{
// Update with the new tweet information
NSLog(@"\nNew RSS title from %@:\n \"%@\"\n\"%@\"\n", [found leafForKey:@"title"], [[found leafForKey:@"description"] substringToIndex:30], [found leafForKey:@"link"]);

// Save the unmessed tweet to the ~/.tweet file
[testString writeToFile:TWEET_FILE atomically:YES encoding:NSUTF8StringEncoding error:nil];

// handle reserved stuff. There's got to be a better way to escape
testString = [testString stringByReplacingOccurrencesOfString:@"\"" withString:@"\\\""];
testString = [testString stringByReplacingOccurrencesOfString:@"'" withString:@""];
testString = [testString stringByReplacingOccurrencesOfString:@":" withString:@"-"];
testString = [testString stringByReplacingOccurrencesOfString:@"{" withString:@"("];
testString = [testString stringByReplacingOccurrencesOfString:@"}" withString:@")"];

// push it
system([PUSH_CMD UTF8String]);
}
}

[NSThread sleepForTimeInterval:(double) delay];
if (SHOW_TICK) printf("tick\n");
}


There is also a Mac Xcode project sample on how to push from Desktop App here
http://stefan.hafeneger.name/download/PushMeBabySource.zip