I am very new to Unity / Vuforia scripting and really need help.
I have composed a whole Timeline in unity but cannot trigger an event ... there are still code errors ...
In the DefaultTrackableEventHandler script, I understand that you have to attach a piece of code that allows these events to be triggered but I haven't been able to do this for 48 hours. Help from the community would be very useful. please.
Here is the scenario:
When launching the application a video should appear. When the target is found, the video should stop to leave room for the Timeline which is triggered automatically, since the target has been found. If the user loses the target then the Timeleine will have to stop and the starting video will have to start again.
Someone could help me with this problem that has taken my head for 48 hours ...
thank you so much
Looks like you have to write scripts that contains differents functions that manage all those points. One script that starts and stops your video (2 different functions), and a other that starts and stops your timeline. (Don't forget to hide the video when you stop it)
Once you have those scripts you can attach them to a object and then, use them in DefaultTrackableEventHandler. (You add you function to the right event by clicking the + button, dragging your object with the script and choosing the right function to use).
Screenshot of DefaultTrackableEventHandler
Related
I hope, I can formulate my question correctly and understandable.
When I write an Android App in Kotlin, I normally have a button to close the app and for example finish it with writing a file or something like that.
Now, sometimes I don't finish it with the button, but swipe it out. Then, the file is not wirtten..
Is there a Kotlin statement to catch the "swipe out" and perform some code? When I Inflate another view, at the end I have a dismiss-statement or dismiss.listener and can do some code.
example:
dialog.dismiss() or popupwindow.dismiss()
So question: is there a dismiss.app or something like that?
When your app's Activity is destroyed (either by the user swiping it away, or the system killing the app to free up some resources) it goes through the usual lifecycle steps, ending with onDestroy.
These steps also get pushed to any lifecycle-aware components that are observing that activity's lifecycle, including Fragments (like a DialogFragment) - so that will also get an onDestroy() call. Fragments can be destroyed at other times too, but you can look at the activity's lifecycle to see what's going on there if you need to.
But really, as a general rule you want to save data in something like onStop(), when the activity/fragment is going to stop being visible, i.e. it's going into the background. That's a good time to make sure you've saved all your important data and state, because the user may not be coming back, and you can't be sure onDestroy will be neatly called (e.g. there could be a crash, or the phone might suddenly lose power).
Don't rely on persisting data with the onSaveInstanceState() callback though - that's intended for saving UI state, and if the user backs out of the app / swipes it away, that's counted as a fresh start for the next time they load the app, so onSaveInstanceState won't be called (since the UI state isn't being saved). Use onStop instead (or onPause if you like - have a look at those links for more info on what the difference is)
I am working on integrating Media Player into my MFC dialog box.The dialog box is created from a dll which wraps libvlc.My problem is after I set the output window to a static control in dialog and play the media it works fine.But other API calls like getting length and getting time fails if I call it from my methods.But as soon as I introduce a Sleep(100),everything seems to work.I am wondering what could be the issue.What i want to do is play video between user provided timeline(i.e. if user want only 5 minutes of video out of 15 minutes length between time A to time B).
The sleep seems to work fine but there is always an unwanted delay in playback that I do not want.Please if somebody can give pointers on how to achieve this.
The Sleep works if I have worker threads running in my application.But if I handle the working through the libVLC event handler it works fine without Sleep.Seems like I am missing a very fundamental logic here but since this works for now,I will go with this. Thank you all.
I am trying to make an application that will "trigger" when a certain image is shown on screen. I have the app streaming the camera to the screen inside the app using AVCaptureSession. Now i was wondering how to make some sort of EventHandler for each frame of the video, in which i will check to see if the image contains one of my triggers. Does anyone know the best way to handle this? I could not find any resources on an OnFrame EventHandler for AVCaptureSession.
This is the tutorial i followed for showing the camera on screen
https://github.com/messier16/FullCameraPage/blob/master/FullCameraApp.iOS/CameraPageRenderer.cs
Any advice is awesome. Thank you!
I ended up doing a while loop inside of overriden ViewWillAppear() to grab the frame consistently
Sorry if it looks like a noob question, but i'm new to titanium so some concepts are foreign to me.
I have a script called entry.js which is called from details.js using require('entry.js').
Now within entry.js i play a sound, depending on what entry is selected.
var player = Ti.Media.createSound({url:"/sounds/0"+e.id+".mp3"});
player.play();
That part is ok. The problem is when i go back to the details screen, and select another entry, the new sound overlaps the old one.
So i need a global value or object that i can pass down to entry.js to make sure if the sound is playing or not.
But if i declare a global TI.Media object in details.js i get an error in entry.js:
Cant find variable player
So the question is, how do i detect in a sub javascript file that an instance of audio is already running?
You can check whether the audio is playing using the isPlaying() method or try to stop the playing music when you get back to the details screen. You can use stop() method to stop the sound. It will stops playing the audio and resets the playback position to the beginning of the clip.
If you want to create a global variable or pass variable from one window to another, refer the following links
Passing parameters from currentWindow to the new window in Titanium
Passing variable between windows
I've written a Blackberry appliation with the Blackberry JDE, running on a 9000 simulator. I tested it a week or so ago and loaded it on a Blackberry 9000 phone, and everything worked just fine. Sometime between then and now, though, something went wrong.
My code does the whole moving arrow "loading things from the internet" or whatever thing, but no screens pop up. My original screen, which is just a MainScreen with a RichTextField doesn't load at all. This screen, at least, has most likely not changed in the passing week, so if something broke, it would be in one of the later screens/lines of code that it shouldn't even be getting to yet!
Is it possible that my .jad or .cod file are corrupted somehow? I noticed that when I first put code on my machine, I just stuck in the .cod file that Eclipse provided me. Then, last week, the .cod file it gave me didn't work, because it was ACTUALLY a zip file with a two .cod files inside of it. Using the .cod file with the same name as the .cod file they were in succesfully loaded my app. I did the same this time, and I don't get invalid cod file errors or anything, but the app is still as broken.
Is there some direction I should be looking? Is the issue likely to be in my code, the cod file, the phone, or somewhere completely else?
-Jenny
Edit: I've narrowed it down to the problem only occuring if I attempt to load a particular screen. My problem is that this screen is nearly identical to another screen that IS working just fine on the actual device. Both screens are generated from the same method (which makes a webservice call and gets XML back and parses it to populate the fields of the screen). The only difference is that the screen that is breaking is going to a different URL. This URL DOES work (both from a browser and from the simulated device), so I"m at a loss. The application doesn't seem to crash, (it's still running in the background), it just doesn't attempt to display anymore.
Edit:
Okay, I'm seeing some tunneling errors immediately after I load my app, (but before I execute any of my networking code). When i do execute my networking code, it works just fine, unless it happens to be for my "Rental" section. I commented out all calls to that, and made my menu item for Rentals simply make a print statement. The code behaves identically (it freezes, or displays a white screen after selecting the button). All other menu items work (including those that call threads or network methods). And the rentals menu sucessfully executes in the simulator.
private MenuItem _rentals = new MenuItem("My Rentals", 110,
10) {
public void run() {
//if the last thing I did was a rental
//just show the screen
//else, reload rentals
System.out.println("Rentals was selected");
displayError("Rentals was pressed");
// if(rental){
// System.out.println("It's a rental!");
// popScreen(getActiveScreen());
// pushScreen(_offeringsScreen);
// }else{
// System.out.println("Getting Rentals from scratch");
// RentalsThread _rThread = new RentalsThread();
// _rThread.start();
// }
}};
I'm at a complete loss here: The device debugger doesn't seem to even register me selecting the menu item, and not a single line of code executes! It just freezes! I'll try putting back in my RentalsThread call in the start of my program (which was also freezing) just to see if I can tease apart the problem with the Rentals Thread (which makes the Rental Screen), and the problem with the Rentals menu item.
Okay, I think I have this figured out.
1.) My code was still behaving identically even after commenting out everything because I wasn't rebuilding the .COD files (they automatically rebuild if you try to run it in the simulator, but don't when you're generating a .ALX file, for some reason).
2.) The code I had for generating the Rental Screen was adding things to said screen. Apparently this is all well and good on the simulator, but on the real device it's required that you do all graphics manipulation (even for graphics not yet displayed) in an event thread (I used invokeAndWait).
So, now everything seems to be working just fine. There wasn't anything wrong with my networking (nor did I think there was, because my other networking screen works just fine). I still don't know why I get all those weird tunneling network things before I start, but it doesn't seem to affect anything yet.
See also:
BlackBerry UI Threading - The Very Basics
BlackBerry threading model
several suggestions:
if you have some background work with resources like file IO or networking, app just may stuck there... provide error handling and try to debug app from device!
code signing, check latest code update for API which require signing. But since there are no errors this is doubtful.
To debug on device, run Blackberry Device Manager, attach phone to usb, in eclipse select project, Context Menu -> Debug As -> Blackberry Device.
See A50 How to Debug and Optimize
UPDATE I see "Tunnel failed" exception, so it's like network connection problem...
See tunnel failed in blackberry bold. why?
How to Configure Full Internet Access On BlackBerry
UPDATE Support - Application stops responding when opening a connection