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Its just plain cumbersome to try out CGRect values for subview frames etc on paper and then on code and on the simulator. Get the wrong and you have to try it all over again. And so on.
Is there any tool out there for the iPad which simulates the screen XY system and on which we might try out placing views on coordinates and see how the layout looks like?
Thanks!
You should definitely invest some time on Interface Builder. Since you are developing for fixed sceen-size devices, you actually dont need advanced layout managers like the ones in Android or Qt. What you need most of the time is good alignment and spacing, and Interface Builder is perfect for that. I know, it feels like hard-coding everything, and it bothers you if you are a clean-code junkie, but that's the efficient way to go for iOS devices. For unknown number of items, or unknown length text which shouldn't be clipped, just use UITableVeiw's so it scrolls and shows the whole content properly.
The vendor (Apple) exploits fixed screen-size situation to the bone (that's why iPhone4 has exactly twice the resolution on both axis), so why wouldn't you?
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So, I have been been looking a lot into this topic and the internet seems to be rather vague and divided. I have found that a lot of people handle different screen sizes and aspect ratios by using certain scripts to scale and anchor game objects.
Some people say that you should have assets of different sizes, and enable/disable them based on the screen size. While this method (to me) seems more efficient, it feels like this is suggested less than the other method.
So I would like to ask what the best method is. (Or if there is such a thing as the "best")
The best way is by using a Canvas Scaler and making good use of the anchor-point of the UI elements in your scene and using Layout Groups, this way they will fit nicely into almost all of the aspect ratios.
A few videos covering these topics:
Jimmy Vegas
Unity 3D With Scott
Cat Trap Studios
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Does anyone know where I can get a raw version of the Notes paper background? Preferably in PSD format?
In the past I’ve used a screenshot from my iPhone, however, now there’s an #3x version (and I have the 5s) the quality may be affected. I’ve tried making them myself in Photoshop but it’s nowhere near as good.
Alternatively, if anyone has an iPhone 6 or above and can send me an #3x version of the Notes background, it’d be much appreciated!
Thanks as always
Here You Go! The Paper backgrounds from iOS Notes App.
Maybe just get it from the macOS Notes app! Just go to it in Finder, right-click, then click "show package contents." Now go to the "resources" folder. The background image might be there!
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I am planing to develop an app like Word Lens. Can any one suggest a good library that I can use? or any one explain technology behind the Word Lens App? is it reel time image matching or OCR? I know some image processing library like OpenCv, tesseract...Any help is greatly appreciated...
I'm one of the creators of Word Lens. Although there are some OCR libraries out there (like tesseract), we decided to make our own in order to get better results and performance. Our general algorithm goes like this:
copy the image from the camera and get its grayscale component
level out the image so the text stands out clearly against the background
draw boxes around things that look like characters & sentences
do OCR: match the pixels in each box against a database of characters -- this is actually pretty hard!
collect the characters into words, look up in a dictionary (this is hard too, because there will be mistakes in the OCR)
draw the results back onto the image
Image matching by itself is not good enough, because of the huge variety of fonts, words, and languages out there.
OpenCV is a great library to get up and running with, and to learn more about computer vision in general. I would recommend building off their examples, and playing around there. Have fun!
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I have an image on my device which I capture from camera. The image has readable text. I want to convert that image into text i.e. get the text of image and display it.
I went through Tesseract demo, but not all the text of image is converted into text. I know that there are few paid SDK's like ABBY SDK available for this, but I was looking for some free source.
Are there other SDKs available for the same?
See this for how to do something quick on iOS with Tesseract. I doubt you will get the accuracy you want though. So far I haven't found a good opensource solution because the iPhone camera is not well suited to this problem. There are a few online API options that do better.
Oh and one word of advice, don't pay for anything without trying it in your situation :)
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are there any image effects (e.g. lomo, watercolor, sketch ...etc) libries can be used on mobile device and suitable for mobile device?
There are libraries like JJIL, simple-iphone-image-processing, JH labs, imageMagick porting to iphone and opencv have been mentioned in various previous posts.
I want libraries that I don't need to care about the algorithm of effect, but lots of libraries mentioned above are this type of libraries.
What I need are libraries that already have done effects functions and I just call the functions to apply effects on photos (It is ok to set parameters and attributes by myself when I use it).
Are there any more suggestions?
Free is good, commercial would be fine.
Thank you.
You could try the effects API from Aviary. Here: http://developers.aviary.com/
I never used it though, so I can't say if that's exactly what you are looking for.
Potentially worth your while:
OpenCV
Simple iPhone Image Processing