delegate中，版本不同，回调方法不同。

//for ios version below 4.2

- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url

{

	NSLog(@"url description: %@ \n",[url description]);

	if( [viewController.weibo handleOpenURL:url] )

		return TRUE;

	

	return TRUE;

}



//for ios version is or above 4.2

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation

{

	NSLog(@"url description: %@ \n",[url description]);

	if( [viewController.weibo handleOpenURL:url] )

		return TRUE;

	

	return TRUE;

}