iOS Question Share to social media functionality - Help with inline objC

henrywood · Apr 13, 2015

Hey !

I am trying to integrate social sharing functionality in my app through Objective C.

Could someone validate the methology - in particular the Objective C code ?

I would like to get an event in B4i when the user has completed sharing.

UPDATED: 09-05-2015: THIS VERSION DOES NOT WORK - PLEASE SEE POST #101 FOR A WORKING VERSION:
https://www.b4x.com/android/forum/t...elp-with-inline-objc.52849/page-6#post-336177

A BIG THANK YOU TO ALL WHO HELPED ME WITH THIS CODE !

Here is my code:

B4X:

'Code module

Sub Process_Globals
   'These global variables will be declared once when the application starts.
   'Public variables can be accessed from all modules.

End Sub


#If OBJC

- (IBAction)shareToSocialMedia:(NSString *)txt (NSString *)url: (NSString *)image
{
   //NSString *text = @"How to add Facebook and Twitter sharing to an iOS app";
   NSString *text = txt;
   //NSURL *url = [NSURL URLWithString:@"http://roadfiresoftware.com/2014/02/how-to-add-facebook-and-twitter-sharing-to-an-ios-app/"];
   NSURL *url = [NSURL URLWithString:url];
   //UIImage *image = [UIImage imageNamed:@"roadfire-icon-square-200"];
   UIImage *image = [UIImage imageNamed:image];

   UIActivityViewController *controller =
   [[UIActivityViewController alloc]
   initWithActivityItems:@[text, url, image]
   applicationActivities:nil];

  controller.excludedActivityTypes = @[UIActivityTypePostToWeibo,
  UIActivityTypeMessage,
  UIActivityTypeMail,
  UIActivityTypePrint,
  UIActivityTypeCopyToPasteboard,
  UIActivityTypeAssignToContact,
  UIActivityTypeSaveToCameraRoll,
  UIActivityTypeAddToReadingList,
  UIActivityTypePostToFlickr,
  UIActivityTypePostToVimeo,
  UIActivityTypePostToTencentWeibo,
  UIActivityTypeAirDrop];

   [self presentViewController:controller animated:YES completion:^{
     [self sharedone];
   }];
}

- (void)sharedone:
{
   int status = 1;
   [B4IObjectWrapper raiseEvent:self :@"onsharingdone:" :@[@((int)status)]];
   //[B4IObjectWrapper raiseEventFromDifferentThread:self :@"onsharingdone:" :@[@((int)status)]];

}

#end if

Sub onSharingDone(Status As Int)
   Log("onSharingDone: Status = " & Status)
End Sub

Sub ShareToSocialMedia(txt As String, theURL As String, imageFile As String)

   Dim NativeMe As NativeObject = Me
   NativeMe.RunMethod("shareToSocialMedia:", Array As Object(txt, theURL, imageFile))

End Sub

Pendrush · May 9, 2015

This is a way better

B4X:

 [popup presentPopoverFromRect:CGRectMake(SBview.Left + SBview.Width/2, SBview.Top+SBview.Height,0,SBview.Height)inView:topView permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

henrywood · May 9, 2015

edited the code a bit please try now

henrywood · May 9, 2015

screenshots please ?

Pendrush · May 9, 2015

B4X:

Sub Process_Globals
  Private myPage As Page
End Sub


#IF OBJC

#define SCREEN_WIDTH ((([UIApplication sharedApplication].statusBarOrientation ==UIInterfaceOrientationPortrait)||([UIApplication sharedApplication].statusBarOrientation ==UIInterfaceOrientationPortraitUpsideDown))?[[UIScreen mainScreen] bounds].size.width :[[UIScreen mainScreen] bounds].size.height)

#define SCREEN_HEIGHT ((([UIApplication sharedApplication].statusBarOrientation ==UIInterfaceOrientationPortrait)||([UIApplication sharedApplication].statusBarOrientation ==UIInterfaceOrientationPortraitUpsideDown))?[[UIScreen mainScreen] bounds].size.height :[[UIScreen mainScreen] bounds].size.width)

- (void)share2SocialMedia:(NSString *)txt :(NSString *)theurl :(NSString *)theimg :(UIView *)SBview
{
  //NSString *text = @"How to add Facebook and Twitter sharing to an iOS app";
  NSString *text = txt;
  //NSURL *url = [NSURL URLWithString:@"http://roadfiresoftware.com/2014/02/how-to-add-facebook-and-twitter-sharing-to-an-ios-app/"];
  NSURL *url = [NSURL URLWithString:theurl];
  //UIImage *image = [UIImage imageNamed:@"roadfire-icon-square-200"];
  UIImage *image;

  if([theimg hasPrefix:@"http://"] || [theimg hasPrefix:@"https://"] ) {
  image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:theimg]]];
  } else {
  image = [UIImage imageNamed:theimg];
  }

  UIActivityViewController *controller =
  [[UIActivityViewController alloc]
  initWithActivityItems:@[text, url, image]
  applicationActivities:nil];

  controller.excludedActivityTypes = @[UIActivityTypePostToWeibo,
  UIActivityTypeMessage,
  UIActivityTypeMail,
  UIActivityTypePrint,
  UIActivityTypeCopyToPasteboard,
  UIActivityTypeAssignToContact,
  UIActivityTypeSaveToCameraRoll,
  UIActivityTypeAddToReadingList,
  UIActivityTypePostToFlickr,
  UIActivityTypePostToVimeo,
  UIActivityTypePostToTencentWeibo,
  UIActivityTypeAirDrop];

  [controller setCompletionHandler:^(NSString*activityType, BOOL completed) {

  // Raise the event for B4i
  if (completed) {
  [self.bi raiseEvent:nil event:@"activity_completed::" params:@[@((BOOL)completed),(activityType)]];
  } else {

  NSString *activity = @"";
  [self.bi raiseEvent:nil event:@"activity_completed::" params:@[@((BOOL)completed),(activity)]];
  }
  }];

  //if iPhone
  if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) {
  [(self._mypage).object presentViewController:controller animated:YES completion:nil];

  } else { //if iPad
  // Change Rect to position Popover
  UIPopoverController *popup = [[UIPopoverController alloc] initWithContentViewController:controller];
  UIWindow *window = [[UIApplication sharedApplication] keyWindow];
  UIView *topView = window.rootViewController.view;
  [popup presentPopoverFromRect:CGRectMake(SBview.Left + SBview.Width/2, SBview.Top+SBview.Height, 0, SBview.Height)inView:topView permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
  }
}

#End If



Sub activity_completed(status As Boolean, T As String)

  'If Main.DEBUG Then
  '  Utils.Log_("onSharingDone: Status = " & status & " - Type: " & T & " - Will look for callback: ShareModule_SharingCompleted in " & myPage.Title)
  'End If

' If SubExists(myPage, "ShareModule_SharingCompleted", 2) = True Then
' CallSub3(myPage, "ShareModule_SharingCompleted", status, T)
' End If

End Sub

Sub ShareToSocialMedia(p As Page, txt As String, theURL As String, imageFileOrURL As String, shareButton As Button)

  myPage = p
  Dim v As View = shareButton

  Dim NativeMe As NativeObject = Me
  NativeMe.RunMethod("share2SocialMedia::::", Array As Object(txt, theURL, imageFileOrURL, v))

End Sub

This code give output as on images

The more is button down,m the more is popup away from button
image 2 - first button click
image 1 - second button click

I will now test your code, and post results.

henrywood · May 9, 2015

I think yours is better

Pendrush · May 9, 2015

With your code

Pendrush · May 9, 2015

Yes, my is better, but something is still wrong.
The more button is down, pop-up share get more away from button, same distance is on portrait and in landscape.
With button.top=0 share start in half of button height.
As I move button down, pop-up share get more and more distance from button.

Pendrush · May 9, 2015

Also.. when I comment line in designer AutoScaleAll, there is change, but also popup get more away from button as button.top get higher.
For some reason coordinate Y not calculated right and I don't know why.
Coordinate X work as expected in CGRectMake.

henrywood · May 9, 2015

Shouldn't it be like this instead:

B4X:

[popup presentPopoverFromRect:CGRectMake(SBview.Left + SBview.Width/2, SBview.Top+SBview.Height, SCREEN_WIDTH/2, SCREEN_HEIGHT/4)inView:topView permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

Pendrush · May 9, 2015

Nope. to much down and too much right.
For some reason coordinate Y not calculated right and I don't know why.
Coordinate X work as expected in CGRectMake.

Pendrush · May 9, 2015

Button.top and Button.height
None of them is not calculated right
Width and Left work as expected.

Pendrush · May 9, 2015

For some reason

B4X:

[popup presentPopoverFromRect:CGRectMake(SBview.Left + SBview.Width/2, SBview.Top+SBview.Height+65, 0, 0)inView:topView permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

this work as expected, probably height of nav bar?

henrywood · May 9, 2015

what about:

B4X:

[popup presentPopoverFromRect:CGRectMake(SBview.Left + SBview.Width/2, SBview.Top+SBview.Height,
((SCREEN_WIDTH - (SBview.Left + SBview.Width))/2) , ((SCREEN_HEIGHT - (SBview.Top + SBview.Height))))inView:topView permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

Pendrush · May 9, 2015

No. Too mach below. Height and width must be 0, as in stackoverflow solution.
navbar height is 64 points, that is problem, If we add +64 on height, everything work as expected.
We need a way to return navbar height and then add it to button.top+button.height+navbar.height

http://stackoverflow.com/questions/20160933/what-is-the-height-of-navigation-bar-in-ios-7

henrywood · May 9, 2015

Maybe try this:

B4X:

#IF OBJC

#define SCREEN_WIDTH ((([UIApplication sharedApplication].statusBarOrientation ==UIInterfaceOrientationPortrait)||([UIApplication sharedApplication].statusBarOrientation ==UIInterfaceOrientationPortraitUpsideDown))?[[UIScreen mainScreen] bounds].size.width :[[UIScreen mainScreen] bounds].size.height)
#define SCREEN_HEIGHT ((([UIApplication sharedApplication].statusBarOrientation ==UIInterfaceOrientationPortrait)||([UIApplication sharedApplication].statusBarOrientation ==UIInterfaceOrientationPortraitUpsideDown))?[[UIScreen mainScreen] bounds].size.height :[[UIScreen mainScreen] bounds].size.width)

- (void)share2SocialMedia:(NSString *)txt :(NSString *)theurl :(NSString *)theimg :(UIView *)SBview
{
  //NSString *text = @"How to add Facebook and Twitter sharing to an iOS app";
  NSString *text = txt;
  //NSURL *url = [NSURL URLWithString:@"http://roadfiresoftware.com/2014/02/how-to-add-facebook-and-twitter-sharing-to-an-ios-app/"];
  NSURL *url = [NSURL URLWithString:theurl];
  //UIImage *image = [UIImage imageNamed:@"roadfire-icon-square-200"];
  UIImage *image;

  if([theimg hasPrefix:@"http://"] || [theimg hasPrefix:@"https://"] ) {
  image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:theimg]]];
  } else {
  image = [UIImage imageNamed:theimg];
  }

  UIActivityViewController *controller =
  [[UIActivityViewController alloc]
  initWithActivityItems:@[text, url, image]
  applicationActivities:nil];

  controller.excludedActivityTypes = @[UIActivityTypePostToWeibo,
  UIActivityTypeMessage,
  UIActivityTypeMail,
  UIActivityTypePrint,
  UIActivityTypeCopyToPasteboard,
  UIActivityTypeAssignToContact,
  UIActivityTypeSaveToCameraRoll,
  UIActivityTypeAddToReadingList,
  UIActivityTypePostToFlickr,
  UIActivityTypePostToVimeo,
  UIActivityTypePostToTencentWeibo,
  UIActivityTypeAirDrop];

  [controller setCompletionHandler:^(NSString*activityType, BOOL completed) {

  // Raise the event for B4i
  if (completed) {
     [self.bi raiseEvent:nil event:@"activity_completed::" params:@[@((BOOL)completed),(activityType)]];
  } else {

   NSString *activity = @"";
     [self.bi raiseEvent:nil event:@"activity_completed::" params:@[@((BOOL)completed),(activity)]];
  }
  }];

  //if iPhone
  if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) {
     [(self._mypage).object presentViewController:controller animated:YES completion:nil];

  } else { //if iPad
  // Change Rect to position Popover
     UIPopoverController *popup = [[UIPopoverController alloc] initWithContentViewController:controller];
     UIWindow *window = [[UIApplication sharedApplication] keyWindow];
     UIView *topView = window.rootViewController.view;
     UINavigationController navCtl = window.rootViewController.navigationController;
     CGFloat navBarHeight = navCtl.navigationBar.frame.size.height;
     CGFloat statusBarHeight = navCtl.statusBar.frame.size.height;
     CGFloat extra = 0;

     if ([UIApplication sharedApplication].statusBarHidden == NO)
     {
          extra += statusBarHeight 
     }
     if (navCtl.navigationBarHidden == NO)
     {
          extra += navBarHeight 
     }


     //[popup presentPopoverFromRect:CGRectMake(SCREEN_WIDTH/2, SCREEN_HEIGHT/4, 0, 0)inView:topView permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
     //[popup presentPopoverFromRect:CGRectMake(SBview.Left + SBview.Width/2, SBview.Top+SBview.Height,0,SBview.Height)inView:topView permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
   [popup presentPopoverFromRect:CGRectMake(SBview.Left + SBview.Width/2, SBview.Top+SBview.Height+extra, 0, 0)inView:topView permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
  }
}

#End If

Pendrush · May 9, 2015

if navbar is hidden

B4X:

    NavControl.NavigationBarVisible = False

Then we need to add +20 instead of +64

Pendrush · May 9, 2015

error: property 'navigationController' not found on object of type 'b4i_modshare *'
CGFloat navBarHeight = self.navigationController.navigationBar.frame.size.height;
^
1 error generated.

Pendrush · May 9, 2015

Status bar height is obviously 20 points and navbar is 44 points.

Pendrush · May 9, 2015

A lot of things changed... Please check code in Main also in Module.
Working as expected with and without NavBar, also working on iPhone as on iPad.

henrywood · May 9, 2015

Tried to edit the code in post #75

Could you please try my version - It gets the height of navigationBar and statusBar in objc and checks the status of the bars as well when it calculates the offset to be added (see post 75)

iOS Question Share to social media functionality - Help with inline objC

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