Important

• average fuel consumption
• average kilometres/miles per litre
• total tracked distance
• period of registred expenses/fillups (i.e. tracking for 1year and 3months)

Total

• total number of fill ups
• total number of expenses
• total fuel volume
• total price (fuel + fillups)
• total fuel price
• total expense price

Average per distance

• average total price per kilometer 100kilometers
• average fuel price per kilometer 100kilometers
• average expense price per kilometer 100kilometers

Average per time

• average total costs per week

• average total costs per month

• average total costs per year

• average fuel costs per week

• average fuel costs per month

• average fuel costs per year

• average expense costs per week

• average expense costs per month

• average expense costs per year

• average distance per day

• average distance per week

• average distance per month

• average distance per year

Average fuel

• average fuel cost per litre
• average fuel volume per fillup
• average fuel cost per fillup

Extreme values

• Best fuel consumption
• Worst fuel consumption
• Cheapest fuel price per litre
• Most expensive fuel price per litre
• Largest distance between two fill ups
• Smallest distance between two fill ups

create card view

button in statistics fragment
start activity with tab swipe views

It shows text Add Expense

add proper date formatting according to Locale to:

• edit screens
• list screens

e.g. 05/20/2015 20.5.2015

Let user to take a picture of fuel dispenser and parse picture to find - price per volume, volume, total price

Do not show graphs button on same place as add button on other screens.
Align graphs button with action bar. Remove Actionbar menu in this screen

Some units are wrong. Use vehicle getters to get proper units.
Handle fuel consumption for american/uk cars.

1 Open car with UK currency
2 open fill ups
3 I see - volume 7.32 GAL, unit price p 118.1/l, total price 39.32 libra.

I expect it should be 7.32 * 1.181 != 39.32

Display message saying there is no entry when recycler view list is empty

When permission is granted, show image options

• linechart - consumption in time
• piechart* - ratio between fillups & expenses (price)
• linechart - price per litre in time
• columnchart - average consumption per month
• columnchart - monthly expenses

add few more currencies and proper number formatting, e.g.:

• price
  • 1.050,00 EUR
  • 1 050 Kč (no decimal)
• price per litre
  • 1,052 Eur/litre (3 decimal)
  • 30,26 Kč/litre (2 decimal)

Find other way - it is not convenient to pass context to every method that needs read resource (for example).
It can cause memory leak
https://stackoverflow.com/questions/987072/using-application-context-everywhere

Create 3 vehicles

• one with no fill up and no expense - to test everything works when no values are inserted
• one with few (3?) fill ups and expenses - to test computed values are correct
• one with many (300?) fillups/expenses - to test performance

because of two 'unit' attributes

• volume unit
• distance unit

When createing car, make a choice between imperial and metric units
metric - km, litres, l/100km
imperial - miles, galons, mile per gallon

Use strategy pattern?

To avoid problems with l/100km - miles/gallon always compute consumption in both ways - show user l/100km and also km/l - than only string change is required (no other computations)

when you choose

• gallons_UK, gallons_US = miles
• litres = kilometres

1. go to vehicle detail
2. tap statistics
3. rotate screen
   both 'plus' & 'detail' button appears

..to prevent memory leaks

continuous integration build and deploying public APK file for actual dwnload

show only last 10 fillups/expenses

• reload on demand

Chart from #24

add other volume units

Consistent naming of layouts, for example
activity_vehicle_add
activity_vehicle_update
...
fragment_fillup_list
...
dialog_vehicle_add

Related to #1

modify the way how to delete or reassign picture of vehicle on EditVehicle screen

bad for performance

improve screen from fuel app 1

Support

• update of old fill up,
• create old fill up

When computing fuel consumption

• look for closest full fill up older than currently added/edited
• look for closest full fill up newer than currently added/edited (incl. currently added/edited)
• update consumption of all fill ups between two full fill ups found above