Android Chart – Developer Challenges

Info

Author

Testing and Issues

You can test this app and submit issues during the testing period of the Android Chart contest.

Entries with serious issues will not be able to win the contest, but even minor issues might be important for overall results.

Voting

2712

Issues

Fair Quokka Apr 28, 2019 at 18:28

— Overall speed is slightly above average (+).
— The design does not comply with the guidelines.
— Bonus goal is completed (+), however pie chart has some issues, parts of animations are also missing.

Samsung Galaxy J7, Android 8.1.0

Desert Gorilla Apr 20, 2019 at 19:25

The UI is quite far from provided mocks:
- Strange blue color in day mode.
- Title and date range are misaligned. Small zoom icon.
- Range selector shown in details mode of chart #4.
- It is not possible to fully expand range selector in all the charts.

Bold Pigeon Apr 21, 2019 at 06:17

I decided to show range selector in details mode of chart #4 due to usability reasons. Three lines are absolutely indistinctive without it.
You can fully expand range selector on the majority of devices, but you took your screenshot on the emulator with a nonstandard dpi setting. Chart unit (point, bar, etc.) is restricted to have at least 1dp width. Try to use real device or to rotate your emulator if you want to expand range selector to the entire timeline.

Fearless Cry Apr 17, 2019 at 21:49

Static date range, but must change with range selector

Bold Pigeon Apr 17, 2019 at 22:40

Absolutely. I made wrong conclusion after watching video_2.mp4. I was absolutely sure that the header should display the entire timeline unless you're not on the pie chart screen. Stupid mistake.

Eager Wolf May 1, 2019 at 16:12

Speed is good, apart from graph #5, which is slow on filtering ('Apples') and too crisp. Incorrect design, black background in day theme on Android 5.0.1.

Impossible to set maximum time range.

Samsung Galaxy S4, Android 5.0.1

Fancy Starfish Apr 17, 2019 at 13:28

The yellow series is not scaled to the full chart height.

Nexus 5 / Android 6.0.1

Bold Pigeon Apr 17, 2019 at 13:56

You can choose any scaling factor by scaling gesture.

Fearless Cry Apr 17, 2019 at 21:45

Poor perfomance on histogram

0:06

Mi A2 Lite

Bold Pigeon Apr 18, 2019 at 18:03

I want to ask testers to take a look on some useful features I've implemented in my app. First, every chart supports gestures for scrolling and scaling. You may also tap timeline bar to scroll. Charts 1,2,3 have extra zoom level. Details window has animated date and values.

Fearless Cry Apr 17, 2019 at 21:46

Weird selection animation

0:10

Bold Pigeon Apr 17, 2019 at 22:41

Not an issue.

Giant Fly Apr 19, 2019 at 06:23

Not bad app, you are in my 'vote up' list. Vote up mine, if it's good enough

One Plus X

Classy Elk Apr 20, 2019 at 08:28

+++ gestures and horizontal orientation
- needs scroll for buttons in horizontal orientation
and charts are not expanded on left right paddings as it is in design mockups.
Your app is the best. I wish you to win.

Bold Pigeon Apr 20, 2019 at 12:18

Thank you very much.

Desert Gorilla Apr 21, 2019 at 13:07

Sorry, forgot to mention my device for previous issue, it is actually a very real Nexus 5 with vanilla Android 6.0.1 and standard dpi, 360x640dp, I'm sure there are other real devices with same issue.
But I can now confirm that the range selector can be expanded on my other test device, so it is indeed a device-specific issue.

Bold Pigeon Apr 23, 2019 at 12:39

So, let me sum up.

I had been confused about how to show selected range and implemented it incorrectly.

No one mentioned that, but I also missed an 'All' option from chart 3.

My app doesn't exactly match the design provided (especially for daytime theme).

It also has noncritical performance issue while displaying details window over the stacked chart.

Sturdy Pony Apr 24, 2019 at 01:09

Date range changing is not smooth

0:12

SGS5 / 6.0.1

Bold Pigeon Apr 24, 2019 at 02:21

Not an issue.

Sturdy Pony Apr 24, 2019 at 01:11

There is no 'Pears' button in the third chart

0:13

SGS5 / 6.0.1

Bold Pigeon Apr 24, 2019 at 02:22

Thank you. It is a layout issue that is difficult to reproduce on bigger screens.