Fixed Bugs and Made Changes

[Deleted user]

Hey, I know there is some official means of doing this but I'm not familiar with git really...

Anyway I made some changes I think are pretty good including the bug fix mentioned in previous

   UIDeviceOrientation deviceOrientation = [[UIDevice currentDevice] orientation];
   NSDictionary *dimensions = @{ @"width": @(frameSize.width), @"height": @(frameSize.height),      @"orientation": @(deviceOrientation) };
   NSLog(@"%@", dimensions);
   [_bridge.eventDispatcher sendDeviceEventWithName:@"orientationDidChange" body:dimensions];

I now include the actual device orientation in the dictionary. I also fixed the issue with sending the wrong width / height (it was flipped around).

Then I receive the orientation in the event receiver and parse it. I also send the new data in the handler.

 onOrientationDidChange(handler) {
     var main = this;
     return RCTDeviceEventEmitter.addListener(
       'orientationDidChange',
       function(newDimensions) {
         main.updateProps(newDimensions.width, newDimensions.height);
         var orientation = main.updateOrientation(newDimensions.orientation);
         handler(newDimensions.width, newDimensions.height, orientation);
       }
     );
   }

I parse the orientation to return easier to work with object:

 updateOrientation(orientation) {
     var o = {};
     switch (orientation) {
       case 1:
         o = {
           current: 'portrait',
           idle: false,
           facing: ''
         };
         break;
       case 2:
         o = {
           current: 'portrait',
           idle: false,
           facing: ''
         };
        break;
       case 3:
         o = {
           current: 'landscape',
           idle: false,
           facing: ''
         };
         break;
       case 4:
         o = {
           current: 'landscape',
            idle: false,
           facing: ''
         };
         break;
       case 5:
         o = {
           current: this.orientation.current,
           idle: true,
           facing: 'up'
         };
         break;
       case 6:
         o = {
           current: this.orientation.current,
           idle: true,
           facing: 'down'
         };
         break;
     }
     console.log('Orientation Updated');
     console.log(o);
     this.orientation = o;
     return o;
   }

And now my handler receives:
NEW ORIENTATION DISCOVERED!
index.ios.js:22 Height: 716
index.ios.js:23 Width: 414
index.ios.js:24 Orientation:
index.ios.js:25 Object {current: "portrait", idle: true, facing: "up"}

[eliagrady]

Tried your fix - worked like a charm! Thank you!
I've made a pull request to the repo with your suggested changes, so everyone can enjoy your fix!

[Deleted user]

Awesome, thanks.

[0x0ece]

Hi, I've tried master (as these changes aren't versioned yet) and it works fine when I develop and reload the app, but not on when I launch the app for the first time.

I can't really figure out what the issue is, it appears that [UIScreen mainScreen].applicationFrame returns the wrong data (and now I understand the crazy swap of width and height).

However, googling around, it seems that UIDeviceOrientationDidChangeNotification is deprecated in favor of viewWillTransitionToSize:
http://stackoverflow.com/questions/26069874/what-is-the-right-way-to-handle-orientation-changes-in-ios-8
Maybe it's worth exploring the new style?

[0x0ece]

Hi again,

I did additional tests, and I believe that viewWillTransitionToSize is the right way to go. It also works on slide over (multitasking) on ipad/ios9.

All I did to test is to implement a viewcontroller, and use it in my AppDelegate:

- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id <UIViewControllerTransitionCoordinator>)coordinator
{
  UIDeviceOrientation deviceOrientation = [[UIDevice currentDevice] orientation];
  NSDictionary *dimensions = @{ @"width": @(size.width), @"height": @(size.height), @"orientation": @(deviceOrientation) };

  NSLog(@"%@", dimensions);

  [super viewWillTransitionToSize:size withTransitionCoordinator:coordinator];
}

Unfortunately I have no idea how to send an event to js, here I need your help :)

[0x0ece]

Last comment for today, promised. I made it work with a hack: I created the controller, sent a notification, and used this module to listen to my own notification instead of UIDeviceOrientationDidChangeNotification.

I asked on SO, if I can find a better/cleaner solution, I'll post a PR:
http://stackoverflow.com/questions/33469009/implement-native-controller-in-react-native

[kkjdaniel]

Merged. #16