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reen not changed now you can build deploy and enjoy your new splash screen uuups there s still the old splash screen go back to xcode there s the new storyboard splash screen attention you probably run into a some years old ios bug where ios doesn t detect the new splash screen and takes an old one from cache take a look at this discussion in most cases this helps for me delete app from iphone ipad reboot device install app again sometimes even this doesn t work but the most important thing apple is happy and you ll get no problems uploading your app to appstore because you re using a storyboard even if ios is still using the old one from cache tweet share on tumblr print opens in new window print like loading in mobile development qt for mobile tips and tricks qt world summit 2019 conference app october 21 2019 leave a comment qt world summit app at the app stores 2019 10 21 can take some time until all is published to the stores qtws 2019 conference app is now available at the stores android 5 0 or greater for phones and tablets from google play store ios 11 0 or greater for iphone or ipads from apple app store sourcecode at github https github com ekke c2gqtws_x some screenshots schedule speakers session detail room venue qtws2019 in tokyo xxx tweet share on tumblr print opens in new window print like loading in conference2go conferences mobile development qt for mobile qt world summit 2018 conference app october 2 2018 4 comments qt world summit app at the app stores qtws 2018 conference app is now available at the stores hint training day sessions are missed yet but will follow soon you ll get them automatically from built in update service android 4 3 or greater for phones and tablets from google play store ios 10 0 or greater for iphone or ipads from apple app store sourcecode at github https github com ekke c2gqtws_x some screenshots schedule speakers session detail room xxx tweet share on tumblr print opens in new window print like loading in conference2go conferences mobile development qt for mobile ios 11 and xcode 9 in qt 5 9 x projects october 6 2017 3 comments just updated xcode and ios getting an error like this missing info plist value a value for the info plist key cfbundleiconname is missing in the bundle xxxxxxxxxxxxxxx apps built with ios 11 or later sdk must supply app icons in an asset catalog and must also provide a value for this info plist key for more information see http help apple com xcode mac current dev10510b1f7 starting with xcode 9 your app icons must be provided as part of your asset catalog don t worry qtcreator helps you to manage this thx jakepetroules and cpluke for your help at qtmob create asset catalog for your app icons the only thing you need is an app icon in 1024 1024 px open this free service https www appicon build drag your appicon onto this site and get an email with all recommended sizes something like this appicon appiconset contents json png contents json contains all instructions xcode needs to know howto use your icon files hint for me this worked only using safari not from firefox add appicons to your qt project i m always using a project structure like this projectfolder ios info plist png remove all your app icon png and create a new folder images xcassets and place your appicon appiconset folder into the images xcassets folder projectfolder ios info plist images xcassets appicon appiconset contents json png edit your info plist remove these keys key cfbundleiconfile key key cfbundleicons key edit yourproject pro remove the lines where you added your icons to the bundle data and insert under ios qmake_asset_catalogs pwd ios images xcassets qmake_asset_catalogs_app_icon appicon the first entry points to your images xcassets folder the second one tells qmake that your appiconset is prefixed with appicon that s all now you can compile and run your project using xcode9 on ios11 devices hint perhaps you already used an asset catalog before and still getting an error there s a new appicon size of 1024 1024 required size 1024x1024 idiom ios marketing filename icon app 1024x1024 1x png scale 1x ignore in one of my projects suddenly at root of the project this file was created asset_catalog_compiler info plist this is a temporary intermediate file so it s safe to add it to your gitignore tweet share on tumblr print opens in new window print like loading in mobile development qt for mobile tips and tricks no limits howto make a complex real life mobile business app october 5 2017 leave a comment since more then 30 years i m developing business solutions for smp and enterprise where the last 8 years i m focused on mobile app development there are many challenges to master while developing mobile apps for different platforms android ios windows 10 mobile blackberry10 and there are many frameworks out there to do this angular ionic react native xamarin qt the decision about the right framework for more complicated and complex mobile business apps isn t easy you ll find small example apps and all looks good then you start with your project and some weeks or months later you reach the limits performance goes down app becomes instable and you re in real trouble i went through all of this and finally found the best framework for my apps qt yes qt is an old framework and exists since more then 20 years but qt 2017 isn t the same as qt 1990 qt covers development for desktop mobile or embedded apps and provides qtquick qtwidgets and the new qtquickcontrols2 qtquickcontrols2 are not an update of qtquick but a complete new framework and from my experiences last 2 years i must say you can develop very performant stable mobile apps with no limits most of my business applications are running hidden at customer site and i cannot talk about that s the reason why i m developing example apps and from time to time conference apps last year i developed the qt world summit conference app this year the conference app is built by v play another way to develop mobile apps with qt christian feldbacher is talking about v play app s at qt world summit profsys ambulant outbound services profsys stationär inbound services this doesn t mean that i was lazy i was heavy working on one of my more complex mobile business apps profsys an app to support care services outbound and inbound and i m glad to present this app at qt world summit 2017 in berlin knowing that thousands of care services employees are running the app successfully for their daily work is great there will be two sessions roland wienen ceo ic sys success with mobile first in a real business case my session no limits how to make a more complicated mobile business app roland will talk about the business aspects and i will talk about the development and give some tips and tricks see what can be done with qtquickcontrols2 for mobile app development looking foward to meet you at qtworldsummit2017 in berlin or at w jax in munich where i m talking about bluetooth le and mobile business apps tweet share on tumblr print opens in new window print like loading in business apps mobile development qt for mobile ekkes bt le example app june 29 2017 4 comments bluetooth le for mobile business apps as you know i m developing mobile business apps for enterprises and smbs there are many use cases where bluetooth le btle devices can help to streamline the workflow last years i already have done some bt le powered apps on blackberry 10 in the meantime blackberry devices are running android and most of my enterprise customers are moving from bb10 to android some to ios some both thanks to qtquickcontrols2 i found my way into android and ios development using qt after some weeks of exploring and developing i m happy what can be done with qt for bt le apps on android and ios a big thx to all the qt developers there are also some bluetooth le example apps avilable http doc qt io qt 5 qtbluetooth index html examples what was missed a real life app built with qtquickcontrols2 to help others and to be able to demo features to customers i decided to develop a btle example app and to make it open source at github the good thing to have this app it s now easier for me to test the features inside a special app instead inside more complex mobile business apps i m normaly working on ekkes btle example finds bt le devices nearby lets you explore services and characteristics and try out read write notify covers all errors and signals to get a robust app if you run into an issue please let me know for known device types addimat lock nfc reader heartrate monitor remembers last used device address to auto connect after restart app allows to connect to more then one bt le devices per ex get notifications from lock and nfc reader at the same time provides settings for battery level and more enables mapping of users persons to lock key or nfc tag manages detailed states connect all needed services characteristics available disconnect easy re connect i ll divide this article into 2 parts documentation and screenshots howto use the app analyzing app project structure and src and howto port bt functionality into your own app the 2nd part will take some time because i m heavy loaded with customer projects meet ekke at conferences i ll speak about more complex mobile business apps at qt world summit 2017 in berlin you are from germany don t miss my talk at w jax bluetooth le in mobile business apps thx john and martin before starting with the first part i have to thank john murray and martin woolley john and martin helped me to master first steps into bluetooth and nfc on blackberry 10 cascades qt 4 8 download from the stores run on android 4 3 or greater for phones and tablets from google play store run on ios 8 2 or greater for iphone or ipads from apple app store run on amazon fire os from amazon app store here s the link to german amazon app store ekkes btle example app this app uses same customized qtquickcontrols2 as my other demo apps also same images and follows same project rules besides the drawer navigation there s a bottom navigation bar for easy access to the most important parts of the app here s the drawer wondering about the gray area where normaly it s only dimmed so you can see what s behind this is because of workarounding a qt 5 9 bug app features and devices scanner discover devices nearby explore services and characteristics heartrate heartrate monitor lock waiter lock with magentic keys nfc tag nfc reader via bt le help page about page main goal of this app is to help other devs with qt bt le for mobile all sources are available at github ekkes btle example app is also my workbench testing new device types and howto integrate into my apps as first i included a heartrate monitor because i could compare what happens from existing qt bt le example apps then i added addimat lock probably you have seen something like this at restaurants where waiters log in out at cash register using magnetic keys some of my customers are using addimat lock for teams sharing an android tablet or ipad each key has a unique id and is mapped to the user now switching between users is fast and secure most locks are only connected via usb or rs232 so i was happy to find addimat with bluetooth le custom services hint it s important to use a custom service and not connect as a hid like bt keyboards because then under ios the virtual keyboard disappears more info on addimat can be found here as next i added a nfc reader nfc tags are used per ex to identify attendees of conferences events trainings nfc works well on most android smartphones with an integrated nfc chip but when it comes to tablets even high end tablets as goggle pixel c miss the nfc chip ios devices have a nfc chip integrated but apple blocked acces for developers in the past starting with ios11 developers get partly access to nfc tags you can read ndef records etc but in all business apps i developed last years where nfc was used to identify persons or locations only the uuid was used so for some customers looking for a way to register from a mobile device perhaps an extra nfc reader conencted via bluetooth le is the only solution finally i found a device with some help from csg nfc reader can be customized and integrated into custom cases android ios smartphones tablets the app is running on android smartphones and android tablets screenshot from google pixel c tablet using nfc reader you add nfc to high end google pixel c tablet screenshot amazon fire hd8 tablet ekkes btle example also is running on ios screenshot from iphone and screenshot from ipad mini2 discover and explore bt le devices hint beacons are not supported yet have to learn howto deal with beacons from qt selecting first time the scanner ekkes btle example app discovers all bt le devices nearby while searching for devices there s a progress view see fire hd 8 screenshot above your devices isn t listed switch it off and on this helps in most cases then hit theblue button to discover again and add devices currently not listed tap on the red x button to clear the list and start again in the list you get rssi name mac address and current state from the list you can connect or disconnect devices tapping on a row will give you a popup menu first option select is only available for known device types heartrate lock nfc reader tapping on select will select this device as your default device store mac address in settings open the special page and do a connect explore services opens a detail page wit all the services connect disconnect does exactly this explore services here are all services found for addimat lock you get the name and service uuid tap on a row to see the characteristics of this service characteristics battery level characteristics from addimat lock battery level value can be read characteristics of addimat custom services custom characteristics can be read to get the current value or you can subscribe for notifications tap on a row to see the details or to interact tap on the red r button to read the current value tap on the red n button to subscribe to the values there s a switch if all values should be collected or if you only want to see the last one ekkes btle example app displays values as string hex or int please take a look at the documentation of your device or bluetooth gatt service sometime values are not human readable and must be analyzed by some business logic if a characteristic has write permissions you ll see a w button tapping on the w allows you to enter string or hex values and to write to the device heartrate monitor selecting a hr device a special page opens the header shows you name mac address and state and you can connect initialize services or disconnect from there the play button subscribes notifications and you ll see the hr values addimat lock manager addimat manager page works similar attention addimat lock can work as hid or as bt le with custom service ios doesn t know about the custom bt le service so every time y...
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