Hi everyone, This is my work: handyCalc.
It spent me 4 months with 30000+ lines of code.



You can visit the tutorial site http://handycalc.wordpress.com to see more screenshots.

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handyCalc v0.2 released:
Now we can plot graphs

Fix two serious bugs in core math and UI input.

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handyCalc v0.3 released:
- Great improvement in solving equations, based on Newton method, now solves much faster and finds more roots. (the math core now implements the derivative)
- Improved graph animation, which is more smooth and does not blink now.
- Several improvements.


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handyCalc 0.32, the first release on Android Market, in 2008-12-3.
Applications -> Productivity



still no new features, but improvements. more stable and more efficiency.
more info at http://handycalc.wordpress.com

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And also three custom widgets used in this project with a tutorial is posted in Novice Tutorial:
[Custom Widget] - HandyFlipper: makes everything flip
[Custom Widget] - MyGridLayout: Divide to grid and layout it
Nesting XML Layouts

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This post is the origin, where handyCalc is first published. i'll keep it updated.

Great cal. This so banned in Calculus tests... lol
Great graphic design, layout, animation ... addition graphs would be nice.
I think they need one of this for iPhone too, so I can use it while wait for the "real" android hardwares. But anyway, I don't see why you not going to be on top ten of winning list.

Owesome :)
Is it possible to try it somehow? (a download?)

Wowzers that's really good.

Only thing would be you need to document the equation part so users know what to type.

duanng wrote:Great cal. This so banned in Calculus tests... lol
Great graphic design, layout, animation ... addition graphs would be nice.
I think they need one of this for iPhone too, so I can use it while wait for the "real" android hardwares. But anyway, I don't see why you not going to be on top ten of winning list.

I would like to develop on iPhone, too. But I haven't got a mac. And yet I still can't afford it.
I'm a college student studying civil engineering. And I'm about to go to work in a company in shanghai at the end of June.

Owesome
Is it possible to try it somehow? (a download?)

At this time, I'm not going to release the package because of the ADC.
But It will be released. And it will be free to use. Maybe I will put it to open source since I do not have much time working on it.
There are a lot of Widgets that might be useful in my code. I will put them to the Toturial in this forum if i have time.
And now I'm just tired. too tired. After I submit that package, I don't want to open eclipse or the emulator anymore.

Only thing would be you need to document the equation part so users know what to type.

There are some instructions in the blog handycalc.wordpress.com. If you think it's too hard to understand, please tell me.
And I'm considering a pure text input mode which does not need much learning if you have learned any of the programming language.

mmin18 wrote:And now I'm just tired. too tired. After I submit that package, I don't want to open eclipse or the emulator anymore.

But unlike me you completed your entry so it was worth it

mmin18 wrote:Only thing would be you need to document the equation part so users know what to type.

There are some instructions in the blog handycalc.wordpress.com. If you think it's too hard to understand, please tell me.
And I'm considering a pure text input mode which does not need much learning if you have learned any of the programming language.[/quote] I think the documentation is good. Great work best of luck.

Impressive

Would be really cool if it will be free

Real cool
Good luck

It's cool. Ideal program for schoolchildren and students Great

download released:

http://www.trackdroid.com/info/mmin/handycalc/0-1

http://rapidshare.com/files/107641182/h ... c.apk.html

WOW, definitely that is the nicest looking calculator I have ever seen.
Great UI job. And the functionalities are just as amazing. You really deserve a price.

Damn this is smooth !! For v0.1 I'd say perfect

I love to write unit-conversions textual! Maybe extract that functionality to a single app for 'non-technical' people

Regards,
plusminus

Btw: getting your app via Trackdroid didn't work, did you add the .apk to the "root-package".

Hey, i posted three topics in Novice tutorials which introduced the custom widgets which i used in handyCalc. hope it will be helpful for you to build your app.

[Custom Widget] - HandyFlipper: makes everything flip

[Custom Widget] - MyGridLayout: Divide to grid and layout it

Nesting XML Layouts

BTW: i fixed that problems in trackdroid apk and now you can update handyCalc from trackdroid.com.

Hi mmin18,

Thank you for putting tother 3 great tutorials!
I particularly enjoyed HandyFlipper one

mmin18 wrote:Hey, i posted three topics in Novice tutorials which introduced the custom widgets which i used in handyCalc. hope it will be helpful for you to build your app.

[Custom Widget] - HandyFlipper: makes everything flip

[Custom Widget] - MyGridLayout: Divide to grid and layout it

Nesting XML Layouts

BTW: i fixed that problems in trackdroid apk and now you can update handyCalc from trackdroid.com.

KUDOS