Rewrite graphing so that it can handle all equations, not just the narrow subset of functions. Example: x^2+y^2=1. Suggested algorithm is marching squares.

The Calculator can't handle negative Numbers in Matrix Multiplications: e.g. [[1,2][3,4]]x[[-1,2][2,-1]] gives the result: [[NaN,NaN][NaN,NaN]]

-unverified, reported from app store

in adaition, the buttons for default mode, and zoom are not working aswell.

As the included calculator in the Developer Preview already has, a quick settings tile would be nice for quick access.

Can please add a possibility to show a decimal number as fraction?
For example 0,25 = 1/4

When I view the matrices panel of the calculator app, and press the comma key, the view switches to the simple calculation view and no matrix calculation is possible.

Propose that the matrix separator be set to a semicolon ';', to make it completely separate from the decimal point, which in the Netherlands and other parts of the world is a comma ','.

When dragging the Calculator icon down to delete it, if Cyanogenmod expanded desktop is activated, the circle with cross is shown too far down (see screenshot)

As a user of the testing version on Google play, I just got a notification that this app wants new permissions.
Suddenly this looks less like a calculator and more like spyware. In one update, you've added internet access, location reporting, account/data access, and filesystem access. And yet, your change notes fail to mention a reason for any of these. As someone concerned with privacy, I would appreciate some kind of explanation.

Looking at your repository, it would be nice to see your default branch switched over to the only active branch you have, and it would be even nicer to see downloadable releases (or at least tags that match your play store releases) and a changelog.

It would be nice if the app could calculate x mod y.

However, this functionality is only needed by people like computer scientists, who require this kind of special calculations.
So I propose to disable it by default and provide a switch in settings menu to enable it.

If enabled, the "mod" could be the long-press-function of the division button.
Another option is to add an additional button to the advanced display.

Try x^2+y^2=1. It should be a perfect circle, but as you can see...

Also try x^2+4y^2=1...

I have version 4.3 which I have been using happily since 2014 in blissful unawareness of later versions - thanks for a great app!

Now, having just installed CM 12.1 on a spare device, I expected to see the same old calculator but I didn't.

So it looks some of the nice functions (e.g. matrix) in 4.3 disappeared with the merge with lollipop code and the CM version diverged from this one shortly after (nov 2014?).

If I sideload my 4.3 apk, the Google Play Store wants to update it to 5.1.1 (but I've set the Play Store not to update).

I'm confused because 4.3 (com.android2.calculator3) appears richer (therefore better?) than the latest here (com.android2.calculator3 version 5.1.1) and the latest bundled with CM (com.android.calculator2 version 5.1.1-eb9065775b).

So I just wonder what's happening.

• What are the differences between the version here and the one on CM?
• Is the functional line in 4.3 going to be reinstated at some point and is that going to become the CM standard.

I'm not complaining, just interested. Thanks for the great app.

(4.3 is accessible on F-Droid for anyone interested)

I'd like it if the buttons that were on display could be configured so I could have a calculator with all and only the functions I actually use available at once. Thanks.

I noticed the text from the buttons from the orange panel is hard to read, unless I squeeze my eyes or look closely. Then I tried Google calculator and found no issue there. Why?

Well, I could try blaming the background color, but I have no way to support this argument.

After some investigation, I discovered the lines used to draw each character are slightly wider in the Google calculator. Could that be because of different font weights? (Such as light/medium/bold.) No, that's not the case. The issue is slightly smaller font sizes in this calculator, when compared to Google's.

On a computer screen, where pixels are larger, both sizes seem visible enough. However, on a phone OLED screen, one size is more readable than the other.

On the calculator app, we have this key layout:
https://lh4.ggpht.com/hyeVjYhhjUBEX15vgG1whZXBSMdAYX8VLrpdfOdJ7xDtGHVgz6c4ZfTd3tS_Krzvibk=h900

The problem is most calculators look like this:
http://i1.ppfry.com/media/catalog/product/c/a/800x880/casio-hand-held-calculator-hl-4a-casio-hand-held-calculator-hl-4a-0y9hnd.jpg

You can see the 0 is on the left, while the dot is between the = and the 0. It's the same on a numeric pad on a computer : 0 on the left, dot on the right.

Since the calculator app is doing the opposite, it's quite confusing. Could it be possible a add an option to select the preferred layout?

I'm having a hard time figuring out where I can find the graph feature.
The app description says you can swipe left and right to access more panels but there's only one at the right with the same options as the standard calculator except for a plus that creates a bar at the bottom that leads to one more panel with with some letters (no x and y though).

Copying display shifts only parts of the app downwards on older phones

Could you write the origin of the libraries being used? I can guess where most of the come from except for slider.jar

Tangent lines, integrals, increased text size, stats (min, max, intercepts)

There doesn't appear to be a % button any more, and as I can't find any settings or options panel any more either, I can't see a way to get it back.

Steps to reproduce:
-Add a widget to lockscreen
-Copy text (so that "paste" will show up in an EditText)
-Go to the lockscreen and minimize the page with the calculator widget
-Hold down on the EditText until the cursor + paste appears
-Click paste
-CyanogenMod reboots

When there are fewer history list items than the screen (eg 1~10), dismissing them leaves a blank space at the top of the display

Customizable number of digits before switching to scientific format is requsted.

Not everyone uses comas as separations. Should load the separator from an xml file probably.

Floating calc is cropped on most phones while in landscape

My phone (LG Optimus Dynamic II model L39C Tracfone) has the old-school 320x480 display resolution. This is a 3:2 ratio instead of the newer 16:9 or 16:10 screens. The issue is that the wrong elements are trying to scale down, causing a visual mess. The text box padding and history bar should scale, and the font as well. Instead I get a squashed graph, ridiculously huge history bar, and the button text overlapping. I'd attach a screenshot but I am sending this from my phone. I might try to attach one later.

I also hate the new icon.

Opening the floating calculator while on a white background makes the display hard to see

At least in CM repo.

Regards

When I swipe to left to open functions panel then press back button, app force closes. Here is a logcat:

java.lang.RuntimeException: Cannot animate in collapsed state
at com.xlythe.calculator.material.view.CalculatorPadView$DisplayAnimator.onUpdate(CalculatorPadView.java:540)
at com.xlythe.calculator.material.view.CalculatorPadView$DisplayAnimator$1.onAnimationUpdate(CalculatorPadView.java:523)
at android.animation.ValueAnimator.animateValue(ValueAnimator.java:1463)
at android.animation.ValueAnimator.setCurrentFraction(ValueAnimator.java:642)
at android.animation.ValueAnimator.setCurrentPlayTime(ValueAnimator.java:589)
at android.animation.ValueAnimator.start(ValueAnimator.java:1106)
at android.animation.ValueAnimator.start(ValueAnimator.java:1117)
at com.xlythe.calculator.material.view.CalculatorPadView.collapse(CalculatorPadView.java:414)
at com.xlythe.calculator.material.view.CalculatorPadView.collapse(CalculatorPadView.java:396)
at com.xlythe.calculator.material.BasicCalculator.onBackPressed(BasicCalculator.java:425)
at com.xlythe.calculator.material.GraphingCalculator.onBackPressed(GraphingCalculator.java:306)
at android.app.Activity.onKeyUp(Activity.java:2488)
at android.view.KeyEvent.dispatch(KeyEvent.java:2685)
at android.app.Activity.dispatchKeyEvent(Activity.java:2741)
at android.support.v7.app.AppCompatActivity.dispatchKeyEvent(AppCompatActivity.java:547)
at android.support.v7.view.WindowCallbackWrapper.dispatchKeyEvent(WindowCallbackWrapper.java:57)
at android.support.v7.app.AppCompatDelegateImplBase$AppCompatWindowCallbackBase.dispatchKeyEvent(AppCompatDelegateImplBase.java:315)
at com.android.internal.policy.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:2317)
at android.view.ViewRootImpl$ViewPostImeInputStage.processKeyEvent(ViewRootImpl.java:4131)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4093)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3646)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3699)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3665)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3791)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3673)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3848)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3646)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3699)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3665)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3673)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3646)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3699)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3665)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3791)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3673)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3848)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3646)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3699)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3665)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3673)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3646)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3699)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3665)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3791)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3673)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3848)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3646)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5926)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5900)
at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5861)
at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:6029)
at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185)
at android.os.MessageQueue.nativePollOnce(Native Method)
at android.os.MessageQueue.next(MessageQueue.java:331)
at android.os.Looper.loop(Looper.java:218)
at android.app.ActivityThread.main(ActivityThread.java:5526)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:102)

first i should tank your .
i see matrix classes and layouts in source code but where is in UI ?
i change
switch (v.getId()) {
case R.id.btn_advanced:
layout = advancedPad;
break;
case R.id.btn_hex:
layout = matrixPad;
break;
case R.id.btn_matrix:
layout = matrixPad;
break;
case R.id.btn_close:
// Special case. This button just closes the tray.
showFab();
hideTray();
return;
}
this code to see matrix page , but seems it is not ready ?

On the bases "tab", there's plenty of room to add AND, OR, XOR, and NOT operators, which would make this calculator pretty much perfect for me for everyday use.

Find a library or write one that solves 2 variable equations

Tangent of 90 in Degrees shows up "1.633124e16" instead of infinity/Error.

History widget, scientific widget. These can either be as separate widgets (that you'd add side by side) or one widget with a button to flip between views.

I have the F-Droid build of Calculator 4.3 on my phone and Avast! Mobile just started identifying it as containing a Trojan today. It has been on my phone since July without a previous report. I have also reported this to F-Droid. The specific notice is, "Trojan detected - Android:Revtcp-A [Trj]". I have no idea if this is a false positive or an actual problem.

light themed app icon
grey delete buttons for tablets

Hello and greetings.
Calculator is offered in the F-Droid repository. But with the update from version 3.4.2 to version 4.3 an additional theme store was introduced. Isn't this kind of proprietary software now?

It should get marked with a F-Droid warning now, sorry.

Also its file size really inflated quite a bit because of that. And the widget responds awfully slow now. 3.4.2 is the much better version.

I propose switching "BORRAR" to "DEL" (or "CE") and "AC" for clear.

Example would be cos, sin, etc inside of the matrix

Hello,

What does the paid content do, and what is it actually?

There's no description for it.

The older Holo version of this calculator shows the alternate function at the top-right of each button, in a darker color.

Google Calculator has a INV button that switches sin/cos/tan/ln/log/√ to their inverse forms, and highlight the new functions in bold.

The current calculator has support for alternate functions for some of the buttons by long-tapping them, but there is no indication that such feature is available. At the first glance, a new user will assume the calculator is missing features such as asin.

The new Google Calculator has a much improved UI over previous versions, displaying all primary functions on a single screen:

I would love to see this implemented in my favourite calculator! I use parentheses all the time, and swiping back and forth so much is a real nuisance. Thanks for your continued work on this great, open source product.

Edit: Resized image

Add a page to write and store custom functions. Examples would be Fahrenheit to Celsius, Miles to Kilometers, or factoring a polynomial.

When you're in bin, 2,3,4,5,6,7,8,9 all look clickable, even though they're not. Add a button background that makes it obvious they're disabled.

Some blue bubboe appears in the input field and the app. buzzes when "CLR" is tapped.

By the way the "CLR" button appears randomly, usually "УДАЛИТЬ" is instead of that button.

This would also include spaces every 2 characters in hex and spaces every 4 characters in binary. Include it as an option in settings, defaulted to off. Biggest issue is that the delete key would mess up comas big time. Maybe include them in onDraw? Use the dec-hex-bin code to get numbers out of the equation, and then split at the decimal.

If you calculate an irrational number, such as pi or the square root of 2, the calculator only gives you 6 decimal places of precision. This probably isn't a huge deal for casual use, but it seems like a very arbitrary limitation to have in 2016. Here is a demonstration of this app vs the stock android app, using the square root of 2.

Using the Xlythe app first:

Calculate SQRT(2) and hit [=]

The UI only shows 6 decimal places. To test if this is just a UI issue or a calculation issue, we can multiply that result by SQRT(2) and see what the result is:

2.000001

Now the same process with the stock android app in Android 7.0:

16 decimal places, lets see how it carries over.

2, the correct answer