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I have a problem regarding scammers in my app:
In the private chat between users, users may feel comfortable sending nudes or other sensitive information
The other user is a scammer and might screenshot the information and will re-sell it else where or use it to blackmail the user in some capacity.
I can detect screen recordings and if there is an active capturing in progress can hide content
However with screenshots I can only detect the screenshot after the fact but not beforehand to black out content.
Are there any known code patterns or SDKs that assist with this?
iOS doesn't allow it, There are no observers for screenshots before being taken. And you can't do anything about it, Because it's just not possible to stop someone from taking screenshots, both physically and digitally. You might want to look into other solutions to protect user data.
The only SDK I know of is ScreenShieldKit
There's this answer that provides an alternative, but I've not had a chance to test it out.
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I have some program that I want to do face verification by previously stored people faces in app data, and use the device's camera to get the current person standing in front of it, to make the program log the user in.
I have found some code but I don't know how to use it, it uses OpenCVSharp.
Can anyone tell me how to do this verification in Xamarin Forms?
P.S:- I've found some resources that Aren't Free, such as EmguCV, I want something that is free.
You can use Azure Cognitive service
https://azure.microsoft.com/en-gb/services/cognitive-services/computer-vision/
It has a free tier(more than enough if you have less than 100 users I'd say) to use.
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Now I'm going to create audio player app on my Iphone
So, I was looking for some information about building music app with Swift.
There were many information but, I could not find one thing it is how can I show song lyrics on my phone.
Although already there are many music app that supported to show lyrics but I need customized app only for me. So I have to build music app only for me.
I just want to play and pause song and show playlist and show lyrics.
Maybe are there reference? If there are reference. Please inform me.
#D Why, It's hard to tell what aspect of development you might be asking about specifically. I've been there before myself--wanting to hash out some high level ideas-- so I'd like to help out.
I'd say start with finding a song lyrics database; something like mldb.org. The programmableweb.com contains APIs that may already exist for what you have in mind. Next, check out the dev communities (ObjC, RubyMotion, etc.) for audiobooks, etc. Here's an example out of Code Project that's pretty old already, but it will give you an idea.
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Are there any official documents regarding Sidebars / Navigation Drawers or whatever they may call them, written by Apple? I know that there are no official Sidebar component - I am just looking for any mentioning of Sidebars in official Apple documents (whatever it may say). Want to know how Apple sees these sidebars and if they express any opinion about how and when to use them
The most official response I can find from Apple is in one of their WWDC talks where they explicitly mention Hamburger menus (or sidebars):
"Their value is greatly overstated and they have huge usability downsides".
https://developer.apple.com/videos/play/wwdc2014-211/
(around 31 mins)
There is nothing in the Human Interface guidelines about Hamburger menus, which in itself should imply that Apple doesn't rate them. As is stated in the video
"Typically we don’t provide design advice about the things that we don’t offer".
So although these UI elements may make sense for your app, Apple recommends other approaches to designing your UI and menus.
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I know this is not a technical question but I don't know where to ask elsewhere.
I use the very cool toolkit called trigger.io to develop apps for both android and ios. Now I would like to use something like a database to display data in my app.
Firstly I found a realtime backend called firebase: http://www.firebase.com/
Nice but it takes a while until one gets access to it since it is still in beta.
Then I found a cloud service called Kinvey: http://www.kinvey.com/ Also interesting, but it is free as long as only 200 users download the app.
So do you know any alternatives to store data and use it for my app?
That would be very helpful,
thanks enne
Sure. Parse is an easy option. Basic plan to get start is $0 a month.
Also, there is nothing stopping you from bundling (or download and saving and caching) a json file for use in your trigger.io app.
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I'm working on an iOS application where I'd like to be able to display stores with their respective logos. I've spent a while looking for an API that does this and I can't find anything besides XigniteLogos. Unfortunately this is outside of my budget - is there a free solution available?
This is a very interesting question.
My first thought was that you could try doing a Google Image search. I know Google has a service called Goggles which can recognize logos, so searching the other way must be possible using Google.
I did a sample search on Google Images for "General Mills logo" (I guess I am hungry for breakfast right now) and the first result that was returned was from SeekLogo.com
I am not sure what SeekLogo is, or if they have an API, but they may be exactly what you're looking for. If not, you could try a Google images search and use the first result... (Google does have an image search AIP but... it's been deprecated? The announcement of that says that the documentation / community may have solutions which are still supported...)