i want to add Airdrop sharing to my spritekit game
It dosent work using this code:
UIActivityViewController *controller = [[UIActivityViewController alloc] initWithActivityItems:objectsToShare applicationActivities:nil];
[self presentViewController:controller animated:YES completion:nil]
I am thinking the issue is where you have the code you posted. You possibly have it in viewDidLoad of your UIViewController.
Do this in your UIViewController :
-(void)viewDidAppear:(BOOL)animated
{
// assuming you are creating objectsToShare here or before this point
UIActivityViewController *controller = [[UIActivityViewController alloc] initWithActivityItems:objectsToShare applicationActivities:nil];
[self presentViewController:controller animated:YES completion:nil]
}
I believe the issue is that the view is not fully configured when you are trying to add your UIActivityViewController.
I believe that the bounds and some other properties of the view are not yet properly configured in the viewDidLoad method, which results in a failure to display it.
Related
Does Gluon Mobile have any guidance on implementing a share button? My goal is to be able to share a string containing a link to different apps on the phone. At the moment, I need this only for the iOS implementation. I was able to find this link that provides a simple way to do this in Objective-C:
- (IBAction)shareButton:(UIBarButtonItem *)sender
{
NSString *textToShare = #"Look at this awesome website for aspiring iOS Developers!";
NSURL *myWebsite = [NSURL URLWithString:#"http://www.codingexplorer.com/"];
NSArray *objectsToShare = #[textToShare, myWebsite];
UIActivityViewController *activityVC = [[UIActivityViewController alloc] initWithActivityItems:objectsToShare applicationActivities:nil];
NSArray *excludeActivities = #[UIActivityTypeAirDrop,
UIActivityTypePrint,
UIActivityTypeAssignToContact,
UIActivityTypeSaveToCameraRoll,
UIActivityTypeAddToReadingList,
UIActivityTypePostToFlickr,
UIActivityTypePostToVimeo];
activityVC.excludedActivityTypes = excludeActivities;
[self presentViewController:activityVC animated:YES completion:nil];
}
Looking at the GoNative application example on the Gluon website, it seems like I can use the above code snippet where needed as the native iOS code. Do I have to update the ios build gradle to account for the UIActivity class mentioned in the first link above?
Update*
I have been able to get this to work based on help in this question here.
However when trying to install the native library, I get this error which is understandable as self is unknown in the scope of the code. How would I be able to do this? Instantiate a popover or dialog and pass the activityVC to it?
/Users/ashishsharma/NetBeansProjects/konfamdbranch/src/ios/native/Share.m:25:6: error: use of undeclared identifier 'self' [self presentViewController:activityVC animated:YES completion:nil];
So I was able to solve this using examples on the internet (shown above) along with going through the existing code for the Barcode Scan Service. The issue I was experiencing with the above code was that the present view controller could not be found. However, looking at the bit bucket source for Barcode Scan, I was able to get the root view with the following code:
if(![[UIApplication sharedApplication] keyWindow])
{
NSLog(#"key window was nil");
return;
}
// get the root view controller
UIViewController *rootViewController = [[[UIApplication sharedApplication] keyWindow] rootViewController];
if(!rootViewController)
{
NSLog(#"rootViewController was nil");
return;
}
Then in the code snippet I placed in the question, replace self with rootViewController:
[rootViewController presentViewController:activityVC animated:YES completion:nil];
This leads to the modified code snippet:
#import <UIKit/UIKit.h>
#include "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/JavaVM.framework/Versions/A/Headers/jni.h"
JNIEXPORT void JNICALL Java_com_gluonhq_charm_down_plugins_ios_IOSShareService_shareMessage
(JNIEnv *env, jclass jClass, jstring jMessage) {
if(![[UIApplication sharedApplication] keyWindow])
{
NSLog(#"key window was nil");
return;
}
// get the root view controller
UIViewController *rootViewController = [[[UIApplication sharedApplication] keyWindow] rootViewController];
if(!rootViewController)
{
NSLog(#"rootViewController was nil");
return;
}
NSString *textToShare = #"Check out this site!";
NSURL *myWebsite = [NSURL URLWithString:#"http://www.google.com/"];
NSArray *objectsToShare = #[textToShare, myWebsite];
UIActivityViewController *activityVC = [[UIActivityViewController alloc] initWithActivityItems:objectsToShare applicationActivities:nil];
NSArray *excludeActivities = #[UIActivityTypeAirDrop,
UIActivityTypePrint,
UIActivityTypeAssignToContact,
UIActivityTypeSaveToCameraRoll,
UIActivityTypeAddToReadingList,
UIActivityTypePostToFlickr,
UIActivityTypePostToVimeo];
activityVC.excludedActivityTypes = excludeActivities;
[rootViewController presentViewController:activityVC animated:YES completion:nil];
}
Note I followed the GoNative application to generate my objective-c/ios files correctly.
This leads to a minimal functionality share implementation only because I don't have Facebook installed on the IPhone simulator.
I have a plus button in my primary view controller of a UISplitViewController and i want to present something modally in my detail view, just like apple does when adding a new contact in address book in iPad. I have tried everything but nothing. I managed to do it but when i am trying to embed my presented view controller into a UINavigation controller then my presented controller covers the full screen. Any suggestions? Here is my code:
UINavigationController *navController = [self.splitViewController.viewControllers lastObject];
DetailTableViewController *controller = (DetailTableViewController *)navController.topViewController;
controller.definesPresentationContext = YES;
controller.providesPresentationContextTransitionStyle = YES;
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
EditTableViewController *etvc = (EditTableViewController *)[storyboard instantiateViewControllerWithIdentifier:#"EditTableViewController"];
UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:etvc];
etvc.patient = patient;
if (IDIOM == IPAD)
{
etvc.modalPresentationStyle = UIModalPresentationCurrentContext;
[controller presentViewController:nav animated:YES completion:nil];
} else {
[self presentViewController:nav animated:YES completion:nil];
}
I just successfully solved this problem by creating a custom segue whose implementation is:
- (void)perform
{
UIViewController *ctrl = self.sourceViewController;
UIViewController *dest = self.destinationViewController;
dest.modalPresentationStyle = UIModalPresentationCurrentContext;
[ctrl presentViewController:dest animated:YES completion:nil];
}
I'm seeing the behavior I want by invoking this segue from my detail view controller on the modal view I want to overlay it.
I think where your code is going haywire is here:
etvc.modalPresentationStyle = UIModalPresentationCurrentContext;
I think it should be:
nav.modalPresentationStyle = UIModalPresentationCurrentContext;
Though I haven't tested it.
Note that the Apple docs suggest that modalPresentationStyle is ignored on the iPhone (or on "horizontally compact devices"), so your "IS_IPAD" check may be redundant.
Hope this helps!
In my app, the rotation works fine in iOS7 but not working in iOS8.
As you can see, the status bar rotates, but the view controller does not.
I found the issue is caused by main storyboard setting, but I have no idea why it cased the issue. I just removed main storyboard setting in project file and everything works fine in iOS8.
Following is my codes to load storyboard.
[self setMainStoryboard:[UIStoryboard storyboardWithName:#"MainStoryboard-ipad" bundle:nil]];
UIViewController *vc = [mainStoryboard instantiateInitialViewController];
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
[self.window setRootViewController:vc];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
Maybe I used the wrong way to load storyboard?
I fix the problem, but I think this might not be a good solution. It's just a workaround. Anyway, here is what I have done. If you run into the same problem, you can try removing main storyboard setting in your target.
That's it, no further steps. Everything is fine after I remove main storyboard setting. Maybe the way I load main storyboard is incorrect or there is something wrong with my setting of storyboard.
Following is the codes I used to load storyboard:
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Storyboard" bundle:nil];
UIViewController *vc = [storyboard instantiateInitialViewController];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:vc];
// Override point for customization after application launch.
[self.window setRootViewController:nav];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
If anyone know the correct way to use main storyboard, please give me some feedback. Thanks!
So I had a full working solution in iOS7 that displays a LoginViewController via presentViewController in the AppDelegate's didFinishLaunching.
Basically I am doing something like this:
UIViewController *backgroundViewController = ...
self.window.rootViewController = backgroundViewController;
[self.window makeKeyAndVisible];
[self.window.rootViewController presentViewController:loginViewController
animated:NO ...]
In iOS8 I see a jump. First I see the backgroundViewController then after about 1 second or so the login appears.
So, how can I prevent this jump in iOS8?
I am seeing that are a ton of developers with this kind of problem but still didn't find a solution.
Also a hack (for now), but just one line of code
Add the view of the view controller you're presenting to the window before presentation
UIViewController *viewController = [[UIViewController alloc] init];
[viewController.view setBackgroundColor:[UIColor greenColor]];
// Temporary iOS8 fix for 'presentation lag' on launch
[self.window addSubview:viewController.view];
[self.window.rootViewController presentViewController:viewController animated:NO completion:nil];
If you are presenting a navigation controller than add the navigation controller's view instead of its top view controller.
I have a quick hacky fix:
//Make a screenshot of the ViewController first, or use a real image if you want
__block UIImageView *fakeImageView = [[UIImageView alloc] initWithImage:image];
fakeImageView.frame = vc.view.frame;
[self.view addSubview:fakeImageView];
[self presentViewController:vc animated:animated completion:^{
[fakeImageView removeFromSuperview];
fakeImageView = nil;
}];
It is not good for long term, but can quickly fix this issue without changing too much code.
Waiting for better solutions.
You can set the window to an instance of a temporary controller.
self.window.backgroundColor = [UIColor whiteColor]; //do some styling etc.
self.window.rootViewController = [LoginViewController new];
[self.window makeKeyAndVisible];
From the set controller (LoginViewController) you can push your real login controller with the desired transition. Once the login sequence is over you can make a transition from the login controller to the default application root view controller.
[UIView transitionWithView:[AppGlobal sharedApp].applicationWindow
duration:0.75
options:UIViewAnimationOptionTransitionFlipFromLeft
animations:^{
[AppGlobal sharedApp].applicationWindow.rootViewController = [AppRootViewController new];
} completion:nil];
I have also faced the same problem in iOS8 and I found this solution:
ABCViewController *obj = [[ABCViewController alloc] initWithNibName:#"ABCViewController" bundle:nil];
CATransition *transition = [CATransition animation];
transition.duration = 0.4;
transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
transition.type = kCATransitionMoveIn;
transition.subtype = kCATransitionFromBottom;
transition.delegate = self;
[self.navigationControler.view.layer addAnimation:transition forKey:nil];
[appDelegate.navigationControler obj animated:NO];
obj = nil;
I hope this solution can help you!
This should work:
call [loginViewController view]
Before presenting it.
Someone gave me this code, is it correct? if so how do i use it? I am a noob so can you explain in simpler terms for me? Thanks guys :)
- (IBAction)OpenActionSheetButton:(id)sender {
UIActionSheet *actionsheet = [[UIActionSheet alloc]initWithTitle:#"There is no going back,
are you sure???" delegate:self cancelButtonTitle:#"Cancel"
destructiveButtonTitle:#"Continue" otherButtonTitles:nil, nil];
[actionsheet showInView:self.view];}
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:
(NSInteger)buttonIndex
{
if(buttonIndex == 0)
{
UIViewController *controller = [self.storyboard
instantiateViewControllerWithIdentifier:#"storyboardViewIdentifier"];
//storyboardViewIdentifier is the ViewController identifier you specify in the
storyboard
//PUSH
[self.navigationController pushViewController:controller animated:YES];
//Modal
[self presentViewController:controller animated:YES completion:Nil];
}
}
I'm not sure with the case with storyboard, but with the case of XIB, I need to set UINavigationController object as rootviewcontroller, so that I can push from one viewcontroller to another, I think in storyboard it may be the same, if so, see these answers, first and second to set navigation controller as rootviewcontroller in storyboard environment.