[[XBPushChat sharedInstance] registerPush]; // register push notification, support all iOS
[[XBPushChat sharedInstance] setHost:@"http://ciplustest.libre.com.vn"]; // setup host of PushChat+

- (void)applicationWillResignActive:(UIApplication *)application
{
    [[XBPushChat sharedInstance] setPresence:0];
}

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    [[XBPushChat sharedInstance] setPresence:0];
}

- (void)applicationWillEnterForeground:(UIApplication *)application
{
    [[XBPushChat sharedInstance] setPresence:1];
}

- (void)applicationDidBecomeActive:(UIApplication *)application
{
    [[XBPushChat sharedInstance] setPresence:1];
}

- (void)applicationWillTerminate:(UIApplication *)application
{
    [[XBPushChat sharedInstance] setPresence:0 synchronous:YES];
}

#pragma mark - Push Delegate

- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
    [[XBPushChat sharedInstance] didReceiveToken:deviceToken];
}

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
    [[XBPushChat sharedInstance] didReceiveRemoteNotification:userInfo];
}

- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error
{
    [[XBPushChat sharedInstance] didFailToRegisterForRemoteNotification:error];
}

[[XBPushChat sharedInstance] setSender_id:99]; // 99 is your userid
```objc

4. Fetch your history
```objc
[[XBPushChat sharedInstance] fetchAllRequest]; //get all history
//or 
[[XBPushChat sharedInstance] fetchRequestWith:100]; //get all message between you and user 100

[[XBPushChat sharedInstance] setPresence:1]; //1 is online. 0 is offline