ios Archives - while (true) { }

15 April 202114 April 2021

Debug (and control) your Robotic Arm with iOS

This is my work in progress ~50cm Robotic Arm with 6 AXIS Servo motors, an Arduino and a RaspberryPi (for image recognition in phase 2):

Arduino Robotic Arm 6AXIS iOS controlled

While writing the C++ code in Arduino I found I needed a way to send easily and fast commands to Arduino with my iPhone using Bluetooth.

Basically I need to control my robotic arm using an external device instead of running and running again the code on the Arduino board.

For this reason: I’ve attached a BLE board to Arduino and I have created a simple app (completely written in SwiftUI 😍😎) that use BLE connection to connect to Arduino BLE board and send string commands that are parsed and executed.

Commands sended are like:

15 February 202112 February 2021

iOS – Fake GPS position: how to use and prevent

Very often a lots of iOS applications use your gps position to retrieve data or to lock / unlock contents positions based.

With Android you can use lots of apps called Fake GPS or similar that allow you to change your real gps position with a mocked one.

On Android development side this can be blocked checking via code the:

16 November 202013 October 2020

iOS – Data Leakage: App background cache

Today I want to share a simple way to retrieve user data from a native iOS cache image, automatically generated when your app goes in background.

You can retrieve this kind of informations if your phone was lost or Jailbreaked or connecting it to your pc and open an old backup. You can use tools like iBackup Viewer and more…

Let’s see how it works!

13 October 202012 October 2020

Remove alpha channel from png images

Every time you upload a screenshot on the App Store for a new app submission, you receive from Apple this error message:

“Images can’t contain alpha channels or transparencies.”

7 September 202022 July 2020

Swift – Useful NotificationName extension

Very often you should use a notification name in your code and every time you miss something, you write the wrong name and so on…

I want to simplify the coding like, so I use this solution. Easy and simple for me and I want to share:

27 July 202022 July 2020

Swift – Identify misspelled words and errors in phrases

A simple tutorial for find and identify the wrong typed words of the user in your application using the UITextChecker framework and the NatualLanguage framework.

Final result:

28 June 202016 June 2020

Swift – Native OCR reader

Starting from iOS 11, Apple introduces a new framework called Vision.

The Vision framework performs face and face landmark detection, text detection, barcode recognition, image registration, and general feature tracking. Vision also allows the use of custom Core ML models for tasks like classification or object detection.
https://developer.apple.com/documentation/vision

Today we implement with few lines of code one of the simplest features of this beautiful framework, the OCR reader.

14 June 20203 June 2020

Create your own XCode template

Very often you create a new class or a new view controller and customize it before start coding.

Every time you select from XCode, New File, the file type and add it to your project, like this:

17 May 20207 May 2020

Hacking “Laica Body Touch” weight scale with iOS

I have bought a new weight scale that works with or without a smartphone.

There is a proprietary app, called Laica Body Touch.

Problem with this app are:

15 March 20206 March 2020

CoreML – Twitter sentiment analysis

Today a post about the new Apple framework – CoreML – a machine learning framework to use your trained data-model inside iOS apps.

https://developer.apple.com/machine-learning/core-ml/

Documentation: https://developer.apple.com/documentation/coreml

The example of today is about machine learning to identify the mood of a collection of tweets (#apple, @apple, #covid-19, #love, etc…).