i've a chat view,i'm chating with someone and when i enter in background,and once again enter in foreground all message have been removed(refresh),how can i got same chat message.
- (void)applicationWillEnterForeground:(UIApplication *)application
{
// Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
[[UIApplication sharedApplication] cancelAllLocalNotifications];
application.applicationIconBadgeNumber = 0;
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
SPHViewController *chatView = [[SPHViewController alloc] initWithNibName:#"SPHViewController" bundle:nil];
chatView.strCallerName = [NSString stringWithFormat:#"%#",strSelectedCallerName];
self.window.rootViewController = chatView;
[self.window makeKeyAndVisible];
}
You are basically resetting the app state every time the app enters foreground. That's not the place to instantiate your view controller and set the app's main window. You need to do that in your applicationDidFinishLaunching:
Related
SO I am creating an iOS app that involves allowing the user to be able to receive push notifications. I already have the following code in my appDelegate didFinishLaunchingWithOptions.
if ([application respondsToSelector:#selector(isRegisteredForRemoteNotifications)])
{
// iOS 8 Notifications
[application registerUserNotificationSettings: [UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];
[application registerForRemoteNotifications];
}
So far so good, however, i would like to create an initial view controller that only shows on first launch, it will hopefully explain and justify to the user why it need the ability to send the user push notifications, they can then press continue and it will ask them by executing the code above. This would hopefully only happen on the first launch. Any suggestions?
Thanks
I think you can do something like this
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.backgroundColor = [UIColor whiteColor];
BOOL userHasOnboarded = [[NSUserDefaults standardUserDefaults] boolForKey:#"isFirstTime"];
if (userHasOnboarded) {
[self setupNormalRootViewControllerAnimated:YES];
}
else {
self.window.rootViewController = [self PushExplanation];
}
[self.window makeKeyAndVisible];
return YES;
}
- (void)setupNormalRootViewControllerAnimated:(BOOL)animated {
UIViewController *mainVC = [UIViewController new];
mainVC.title = #"Home View Controller";
if (animated) {
[UIView transitionWithView:self.window duration:0.5 options:UIViewAnimationOptionTransitionCrossDissolve animations:^{
self.window.rootViewController = [[UINavigationController alloc] initWithRootViewController:mainVC];
} completion:nil];
}
else {
self.window.rootViewController = [[UINavigationController alloc] initWithRootViewController:mainVC];
}
}
In your PushExplanation method you can show the UIviewController you want to show once and then in the same UIViewController you can ask for Push Notifications like this
[[UIApplication sharedApplication] registerForRemoteNotificationTypes:
(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];
Hope this help you
This is trivial.
Add a boolean flag haveDisplayedFirstVC to NSUserDefaults. Read it at startup. If it's false, you need to display your first time VC.
In that case, if you're using storyboards, use instantiateViewControllerWithIdentifier: to load a view controller from your storyboard. If you're using nibs, use initWithNibName:bundle:
Once you've created and configured the view controller, display it on top of your standard interface's VC using `presentViewController:animated:completion:' but with animated = NO. That way it will appear on top of your normal interface as the app starts up. (Or animate it onto the screen, whichever you prefer.)
Add the status (Bool) in NSUserDefault and Firsttime check if the key is there or not .
If there is no value,then display your initial viewcontroller and change the status to yes(probably).
Next time normal page will load.
I have not started any of facebook view or method in appDidFinishLoadingWithOptions: but stil when I start app at first, then stop and restart it, it hangs. If i press the pause button i can see the stack trace shown in image.
This code in method applicationDidBecomeActive was creating the issue. Anyone know what can be a possible reason. Removing this solved my issue.
- (void)applicationDidBecomeActive:(UIApplication *)application {
if (FBSession.activeSession.state == FBSessionStateCreatedOpening) {
[FBSession.activeSession close]; // so we close our session and start over
}
if (FBSession.activeSession.isOpen) {
}
}
Actually you have to navigate the page to another view controller so try this.
-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor];
UIViewController *splashController = [[UIViewController alloc]init];
UINavigationController *detailednewscontroller=[[UINavigationController alloc]initWithRootViewController:splashController];
[self.window setRootViewController:detailednewscontroller];
[self.window makeKeyAndVisible];
return YES;
}
Hey I'm new to iPhone and I have been trying to use an Apple push notification. Basically, what I want to do is that when user clicks on the received push notification message, then i need to open a specific view controller, it is working for me. I have added custom data with key parameter "type" to my payload JSON.
here is my payload JSON :
{"aps":{"alert":"This is testing message","type":"Notify","badge":1,"sound":"default"}}
here is my code :
#synthesize viewControllerNotify;
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
[[UIApplication sharedApplication] cancelAllLocalNotifications];
[[UIApplication sharedApplication] registerForRemoteNotificationTypes:
(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];
screenBounds = [[UIScreen mainScreen] bounds];
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
if (launchOptions != nil) {
//Launched from push notification
NSDictionary *userInfo = [launchOptions valueForKey:#"UIApplicationLaunchOptionsRemoteNotificationKey"];
NSDictionary *apsInfo = [userInfo objectForKey:#"aps"];
NSMutableString *notificationType = [apsInfo objectForKey:#"type"];
//For redirect to the view
if([notificationType isEqualToString:#"Notify"]){
//Notify updates
UpdatesViewController *uvc1 = [[UpdatesViewController alloc] initWithNibName:#"UpdatesViewController" bundle:nil];
self.viewControllerNotify = uvc1;
}
else if([notificationType isEqualToString:#"Voting"] || [notificationType isEqualToString:#"QA"]){
//Voting & QA
VotingQAViewController *votingQAViewController = [[VotingQAViewController alloc] initWithNibName:#"VotingQAViewController" bundle:nil];
self.viewControllerNotify = votingQAViewController;
}
else if([notificationType isEqualToString:#"Survey"] || [notificationType isEqualToString:#"Quiz"]){
//Survey & Quizzes
SurveysViewController *surveysViewController = [[SurveysViewController alloc] initWithNibName:#"SurveysViewController" bundle:nil];
self.viewControllerNotify = surveysViewController;
}
UINavigationController *nav=[[UINavigationController alloc]initWithRootViewController:self.viewControllerNotify];
self.window.rootViewController = nav;
[nav setNavigationBarHidden:YES];
}
else{
//Normal Launch
if(screenBounds.size.height == 568) {//iPhone5
splashViewController = [[SplashViewController alloc] initWithNibName:#"SplashViewController_5" bundle:nil];
}
else{
splashViewController = [[SplashViewController alloc] initWithNibName:#"SplashViewController" bundle:nil];
}
UINavigationController *nav=[[UINavigationController alloc]initWithRootViewController:splashViewController];
self.window.rootViewController = nav;
[nav setNavigationBarHidden:YES];
}
[self.window makeKeyAndVisible];
return YES;
}
- (void)application:(UIApplication*)application didReceiveRemoteNotification:(NSDictionary*)userInfo
{
NSDictionary *aps = (NSDictionary *)[userInfo objectForKey:#"aps"];
int badge = [[aps objectForKey:#"badge"] intValue];
NSMutableString *notificationType = [aps objectForKey:#"type"];
NSLog(#"Number of badge is = %d", badge);
NSLog(#"notification type is = %#", notificationType);
//For redirect to the view
if([notificationType isEqualToString:#"Notify"]){
//Notify updates
UpdatesViewController *uvc1 = [[UpdatesViewController alloc] initWithNibName:#"UpdatesViewController" bundle:nil];
self.viewControllerNotify = uvc1;
}
else if([notificationType isEqualToString:#"Voting"] || [notificationType isEqualToString:#"QA"]){
//Voting & QA
VotingQAViewController *votingQAViewController = [[VotingQAViewController alloc] initWithNibName:#"VotingQAViewController" bundle:nil];
self.viewControllerNotify = votingQAViewController;
}
else if([notificationType isEqualToString:#"Survey"] || [notificationType isEqualToString:#"Quiz"]){
//Survey & Quizzes
SurveysViewController *surveysViewController = [[SurveysViewController alloc] initWithNibName:#"SurveysViewController" bundle:nil];
self.viewControllerNotify = surveysViewController;
}
[[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
[[UIApplication sharedApplication] cancelAllLocalNotifications];
UINavigationController *nav=[[UINavigationController alloc]initWithRootViewController:self.viewControllerNotify];
self.window.rootViewController = nav;
[nav setNavigationBarHidden:YES];
[self.window makeKeyAndVisible];
}
My question is: Is this the correct way to redirect to the view controller when push notification is received?
Using the above code, it is redirecting to the view controller class on behalf on Notification type (custom key of notification payload json) successfully in forground and background mode but that redirected View Controller back button is not working. I don't know where i am doing wrong here. If anyone knows then please help me. Thanks.
Better You can post the notification using NSNotificationCentre in didReceiveRemoteNotification and receive the notification on the other classes. So that you can push the required view controller from the current view controller (need not to set as root view controller). Then the back button will works.
For Ex.
[[NSNotificationCenter defaultCenter] postNotificationName:kMesssagePushNotification object:nil userInfo:userInfo];
The back button is not working, because you are setting the target view as a root view. You should instead construct the full navigation stack, i.e. usually, if you have a navigation view controller as a root view controller, you should create that first and then construct all the view controllers that are between the root and your leaf view.
For example, if MainViewController would be your normal start view and the back button from UpdatesViewController should lead to MainViewController you would do:
MainViewController *mainVC = [[MainViewController alloc] initWithNibName:#"MainViewController" bundle:nil];
UpdatesViewController *updatesVC = [[UpdatesViewController alloc] initWithNibName:#"UpdatesViewController" bundle:nil];
UINavigationController *navVC=[[UINavigationController alloc]initWithRootViewController:mainVC];
[navVC setViewControllers:#[mainVC, updatesVC] animated:NO];
self.window.rootViewController = navVC;
There are two chances that you will access the notification data.
If you receive the notification when your app isn't on, then click the notification and you will get the notification data in the following function:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
use
launchOptions[UIApplicationLaunchOptionsRemoteNotificationKey]
to access the notification data and open the view controller you expected.
If you receive the notification when your app is on, but your app can be in background or foreground. If it is the former case, you will receive the notification in notification center, your app will invoke the following function after you click the notification:
-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
If it is the later case, you app will directly invoke the function before. And you can distinguish them using the flowing code:
UIApplicationState state = [[UIApplication sharedApplication] applicationState];
if (state == UIApplicationStateBackground || state == UIApplicationStateInactive){
//notification is received when your app is in background
//open the view controller you expected
}else if(state == UIApplicationStateActive){
//notification is received when your app is in foreground
//do nothing
}
sorry for my pool English, hope it helps~
I want to send a request to server when the app is selected in home screen, before the login screen is displayed.
Thanks in advance
there were no springboard icon tap method or home screen icon selection method for any app that you can detect but when your app icon is being tapped on spring board then at the time of launching your app below method called first so you can write your code for sending request to server there :-
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
// Override point for customization after application launch.
self.viewController = [[[ViewController alloc] initWithNibName:#"ViewController" bundle:nil] autorelease];
self.window.rootViewController = self.viewController;
[self.window makeKeyAndVisible];
return YES;
}
Here is my situation:
I have a TaskListViewController(UITableView) which need Internet.
So I used AFNetworking to do some login work(with demo account and password) before the TaskList is showed.
Now I need to let the user set their account and password.
So I just want to present a Modal View(ZTCUserSettingsViewController) before login.
And I cost a lot time, it still doesn't work.
Is there any way to solve this?
Thank you.
ZTCAPIClient : AFHTTPClient
ZTCTaskListViewController : UITableViewController
code
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[[AFNetworkActivityIndicatorManager sharedManager] setEnabled:YES];
[ZTCAPIClient login];
UITableViewController *viewController = [[ZTCTaskListViewController alloc] initWithStyle:UITableViewStylePlain];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:viewController];
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor];
self.window.rootViewController = nav;
[self.window makeKeyAndVisible];
return YES;
}
I don't see where your sample code attempts to present the modal view controller. Perhaps it happens inside of -[ZTCAPIClient login].
Generally speaking, you can't present a modal view controller until after the presenting view controller's view is in the view hierarchy. For your specific question, this means your program needs to present the modal sometime after the line that reads [self.window makeKeyAndVisible];. It will not work if your program tries to present the modal view controller before, in fact, you'll probably see an error message logged to the debug console.
On a side note, you should be careful not to make your program do too much in -application:didFinishLaunchingWithOptions:. If your program takes too long, the system may kill your app the iOS App Programming Guide states:
Your application:willFinishLaunchingWithOptions: and
application:didFinishLaunchingWithOptions: methods should always be as
lightweight as possible to reduce your app’s launch time. Apps are
expected to launch and initialize themselves and start handling events
in less than 5 seconds. If an app does not finish its launch cycle in
a timely manner, the system kills it for being unresponsive. Thus, any
tasks that might slow down your launch (such as accessing the network)
should be executed asynchronously on a secondary thread.
When launching into the foreground, the system also calls the
applicationDidBecomeActive: method to finish the transition to the
foreground. Because this method is called both at launch time and when
transitioning from the background, use it to perform any tasks that
are common to the two transitions.
Here is my final solution:
launch up:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[[AFNetworkActivityIndicatorManager sharedManager] setEnabled:YES];
UINavigationController *nav = [[UINavigationController alloc] init];
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor];
self.window.rootViewController = nav;
[self.window makeKeyAndVisible];
//important!
[ZTCAPIClient registerUserInfo];
return YES;
}
in ZTCAPIClient.m:
+ (void) registerUserInfo {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSString *account = [defaults stringForKey:#"account"];
if(!account) {
// load default value
[self performSelector:#selector(registerDefaultsFromSettingsBundle)];
ZTCUserSettingsViewController *userSettingsView = [[ZTCUserSettingsViewController alloc] init];
UINavigationController *usersSettingsNav = [[UINavigationController alloc] initWithRootViewController:userSettingsView];
[[[[[UIApplication sharedApplication] delegate] window] rootViewController] presentModalViewController:usersSettingsNav animated:NO];
} else {
DLog(#"**********************");
if ([ZTCAPIClient loginWithAccount:[defaults stringForKey:#"account"] Password:[defaults stringForKey:#"password"] Mode:[defaults stringForKey:#"requestType"] BaseURL:[defaults stringForKey:#"url"]]) {
DLog(#"Log in SUCCESS");
UITableViewController *viewController = [[ZTCTaskListViewController alloc] initWithStyle:UITableViewStylePlain];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:viewController];
[[[[UIApplication sharedApplication] delegate] window] setRootViewController:nav];
} else {
DLog(#"Log in FAIL");
ZTCUserSettingsViewController *userSettingsView = [[ZTCUserSettingsViewController alloc] init];
UINavigationController *usersSettingsNav = [[UINavigationController alloc] initWithRootViewController:userSettingsView];
[[[[[UIApplication sharedApplication] delegate] window] rootViewController] presentModalViewController:usersSettingsNav animated:NO];
}
}
}