Develop Reference

How to read a game memory on android

I want to make something that you can compare to an esp for an android game, but nothing commercial or anything, just want to experiment. I want to know the location of lets say ghosts from pacman, or the bal in pinball, or even airplanes in a flying game.
How do I start with this? I've read some things about how memory works and some functions to actually get it. But I dont know how to FIND the addresses. Also I dont know how to use them in a if statement for example.
For find the memory on Windows is simple on windows with cheatengine programm but on android i have no idea.
Can someone point me in the right direction here?

To develop your own android game you need to learn java or kotlin programming language firstly.
If you want to automize an app which is not your own read it's license agreements and don't do something which is not allowed. You can checkout programms which are used for testautomisation. I can recomment NOX emulator which can also automise clicks or Appium if you need more complex automisation. Appium needs programming skills as well though.
There are also a lot of other options for (test)automisation of all kind of apps/programms.

Is it possible to scan Logical Gates from a handrawn image

I am thinking of a project for my university the teachers liked it but I am not sure if its even possible.
I am trying to make an andriod app.
What I want to do is take a picture of a hand drawn logic circuit (having the AND, OR, NOT ... gates) recognize the gates, and make a circuit in the moblie and run it on all possible inputs
Example of logical circuit ( assume its hand drawn )
For this I will have to make a simulator on mobile, that I dont think is the hard part. The problem is how could recognize the gates from a picture.
I found out that theres a edge detection plugin in java but still I dont think its enought to recognize the gates. Please share any algorithm or any technique or tools that I can use to make this thing.
This is actually for my FYP, I cant find any good ideas and have to present this on thursday.

you will need to do some kind of object recognition the easiest way (conceptually) to identify gates is to simply do a correlation between the image and a bank of gates, or an "alphabet" You run the gate template over the entire image and look for the highest correlation, this means it matches the template closely and you likely found your gate of interest. here are a few interesting s0 posts
Simple text reader (OCR) in Matlab
MATLAB Optical character recognition - need help
On it's own this could be a daunting task, but you can simplify the problem by adding constraints.
For instance the user must draw on graph paper and they can only have one gate per grid. This ensures you won't have to check a large variety of sizes for each gate
If you use graph paper with colored lines (like blue) and the user is only allowed to use a non-blue pen/pencil, you MAY be able to easily remove the grid when processing the image by filtering out the blue channel, and still have a clean image to process with.
of course there are more advanced methods than correlation, but as I said before, conceptually, this model is very easy to understand. Hope that helps
edit
I just realized both my examples were in matlab, the important point here is the logic/process used, not the exact code.

Handwritten text dictionary

I don't know if I am asking the right question even: Is there an Apple/Android app that allow non-native English speakers to draw a word and look up its meaning at the same time? I high value any suggestions/responses to my question. Thanks

The Google Translate application can do this for you. There is a squiggly line at the lower right of the window on startup that lets you draw there and get a translation or description.
I believe that the same application did that for iOS as well. It can even use the camera to translate what it sees for you instead of writing it down and getting a translation if it is in front of you or in written material.

Want my app to export data into html file

It's late and my brain can't even think of the proper things to search for to find the help I need.
Here's what I'm aiming for:
My app takes in a bunch of data from the user. Specifically sizes for windows and doors around a house. My app takes all that data and determines how much material is required, etc.
Here's where I'm stuck:
What I'd like to do is turn that all into a fancy looking report and offer the user the ability to print it. I figured the easiest way to do that would be to generate a report using HTML (or PDF) and have it open up in a web browser, which already has print capabilities.
Can anyone tell me if this seems like a good strategy for what I'm trying accomplish? And if so, point me in the right direction (or to the exact same questions that's already been answered somewhere on this forum).
Thanks.

open source user-security/password scheme

I've read numerous discussions lately about different forms of security for mobile devices outside of the typical password/pin code setup.
The articles talk about recognizing the touchscreen as a human input device and that security measures in apps ought to evolve for that as well.
One such concept involved a graphical keylock like one you would see on a safe. The would have to use multiple fingers to twist it to the correct combination. I haven't done any OpenGL stuff so I wouldn't really know how to develop that, has it been done, is it open source?
I did read this: Security Beyond a Username/Password? , but I am looking for other opinions.
Thanks for any suggestions and resources. Also please post resources instead of voting to close if it comes down to that.

I cann't say for all mobile devices, but iOS SDK provides UIGestureRecognizer class, you may create a subclass that UIGestureRecognizer that recognizes a distinctive gesture, character or some kind of gesture combination (in your case). I assume another mobile technologies also have similar methods to recognize keylock characters.
Hope it help you.