Add symbols for all units in converter

app/src/main/kotlin/com/simplemobiletools/calculator/helpers/converters/AreaConverter.kt

@@ -6,74 +6,88 @@ object AreaConverter : Converter {
     override val nameResId: Int = R.string.unit_area
     override val imageResId: Int = R.drawable.ic_box_vector
 
-    sealed class Unit(nameResId: Int, factor: Double) : Converter.Unit(nameResId, factor) {
+    sealed class Unit(nameResId: Int, formatResId: Int, factor: Double) : Converter.Unit(nameResId, formatResId, factor) {
         data object SquareKilometer : Unit(
             nameResId = R.string.unit_area_square_kilometer,
+            formatResId = R.string.unit_area_square_kilometer_format,
             factor = 1000000.0
         )
 
         data object SquareMeter : Unit(
             nameResId = R.string.unit_area_square_meter,
+            formatResId = R.string.unit_area_square_meter_format,
             factor = 1.0
         )
 
         data object SquareCentimeter : Unit(
             nameResId = R.string.unit_area_square_centimeter,
+            formatResId = R.string.unit_area_square_centimeter_format,
             factor = 0.0001
         )
 
         data object SquareMillimeter : Unit(
             nameResId = R.string.unit_area_square_millimeter,
+            formatResId = R.string.unit_area_square_millimeter_format,
             factor = 0.000001
         )
 
         data object SquareMile : Unit(
             nameResId = R.string.unit_area_square_mile,
+            formatResId = R.string.unit_area_square_mile_format,
             factor = 2_589_988.110336
         )
 
         data object SquareYard : Unit(
             nameResId = R.string.unit_area_square_yard,
+            formatResId = R.string.unit_area_square_yard_format,
             factor = 0.83612736
         )
 
         data object SquareFoot : Unit(
             nameResId = R.string.unit_area_square_foot,
+            formatResId = R.string.unit_area_square_foot_format,
             factor = 0.09290304
         )
 
         data object SquareInch : Unit(
             nameResId = R.string.unit_area_square_inch,
+            formatResId = R.string.unit_area_square_inch_format,
             factor = 0.00064516
         )
 
         data object SquareMil : Unit(
             nameResId = R.string.unit_area_square_mil,
+            formatResId = R.string.unit_area_square_mil_format,
             factor = 0.00000000064516
         )
 
         data object SquareRod : Unit(
             nameResId = R.string.unit_area_square_rod,
+            formatResId = R.string.unit_area_square_rod_format,
             factor = 25.29285264
         )
 
         data object Acre : Unit(
             nameResId = R.string.unit_area_acre,
+            formatResId = R.string.unit_area_acre_format,
             factor = 4_046.8564224
         )
 
         data object Are : Unit(
             nameResId = R.string.unit_area_are,
+            formatResId = R.string.unit_area_are_format,
             factor = 100.0
         )
 
         data object Dunam : Unit(
             nameResId = R.string.unit_area_dunam,
+            formatResId = R.string.unit_area_dunam_format,
             factor = 1000.0
         )
 
         data object Hectare : Unit(
             nameResId = R.string.unit_area_hectare,
+            formatResId = R.string.unit_area_hectare_format,
             factor = 10_000.0
         )
     }

app/src/main/kotlin/com/simplemobiletools/calculator/helpers/converters/Base.kt

@@ -1,5 +1,8 @@
 package com.simplemobiletools.calculator.helpers.converters
 
+import android.content.Context
+import com.simplemobiletools.calculator.R
+
 interface Converter {
     companion object {
         val ALL = listOf(
@@ -24,6 +27,7 @@ interface Converter {
 
     open class Unit(
         val nameResId: Int,
+        val formatResId: Int,
         val factor: Double
     ) {
 
@@ -32,6 +36,14 @@ interface Converter {
         open fun fromBase(value: Double) = value / factor
 
         fun withValue(value: Double) = ValueWithUnit(value, this)
+
+        fun format(context: Context, value: String) = context.getString(formatResId, value)
+
+        fun getNameWithSymbol(context: Context) = context.getString(
+            R.string.unit_name_with_symbol_format,
+            context.getString(nameResId),
+            format(context, "").trim()
+        )
     }
 }
 

app/src/main/kotlin/com/simplemobiletools/calculator/helpers/converters/Converters.kt

@@ -1,19 +0,0 @@
-package com.simplemobiletools.calculator.helpers.converters
-
-object Converters {
-    val ALL = listOf(LengthConverter)
-
-    object Mass
-
-    object Temperature
-
-    object Speed
-
-    object Time
-
-    object Fuel
-
-    object Energy
-
-    object Pressure
-}

app/src/main/kotlin/com/simplemobiletools/calculator/helpers/converters/LengthConverter.kt

@@ -6,129 +6,154 @@ object LengthConverter : Converter {
     override val nameResId: Int = R.string.unit_length
     override val imageResId: Int = R.drawable.ic_height_vector
 
-    sealed class Unit(nameResId: Int, factor: Double) : Converter.Unit(nameResId, factor) {
+    sealed class Unit(nameResId: Int, formatResId: Int, factor: Double) : Converter.Unit(nameResId, formatResId, factor) {
         data object Kilometer : Unit(
             nameResId = R.string.unit_length_kilometer,
+            formatResId = R.string.unit_length_kilometer_format,
             factor = 1000.0
         )
 
         data object Hectometer : Unit(
             nameResId = R.string.unit_length_hectometer,
+            formatResId = R.string.unit_length_hectometer_format,
             factor = 100.0
         )
 
         data object Decameter : Unit(
             nameResId = R.string.unit_length_decameter,
+            formatResId = R.string.unit_length_decameter_format,
             factor = 10.0
         )
 
         data object Meter : Unit(
             nameResId = R.string.unit_length_meter,
+            formatResId = R.string.unit_length_meter_format,
             factor = 1.0
         )
 
         data object Decimeter : Unit(
             nameResId = R.string.unit_length_decimeter,
+            formatResId = R.string.unit_length_decimeter_format,
             factor = 0.1
         )
 
         data object Centimeter : Unit(
             nameResId = R.string.unit_length_centimeter,
+            formatResId = R.string.unit_length_centimeter_format,
             factor = 0.01
         )
 
         data object Millimeter : Unit(
             nameResId = R.string.unit_length_millimeter,
+            formatResId = R.string.unit_length_millimeter_format,
             factor = 0.001
         )
 
         data object Micrometer : Unit(
             nameResId = R.string.unit_length_micrometer,
+            formatResId = R.string.unit_length_micrometer_format,
             factor = 0.000001
         )
 
         data object Nanometer : Unit(
             nameResId = R.string.unit_length_nanometer,
+            formatResId = R.string.unit_length_nanometer_format,
             factor = 0.000000001
         )
 
         data object Picometer : Unit(
             nameResId = R.string.unit_length_picometer,
+            formatResId = R.string.unit_length_picometer_format,
             factor = 0.000000000001
         )
 
         data object Angstrom : Unit(
             nameResId = R.string.unit_length_angstrom,
+            formatResId = R.string.unit_length_angstrom_format,
             factor = 1e-10
         )
 
         data object Mile : Unit(
             nameResId = R.string.unit_length_mile,
+            formatResId = R.string.unit_length_mile_format,
             factor = 1_609.344
         )
 
         data object Chain : Unit(
             nameResId = R.string.unit_length_chain,
+            formatResId = R.string.unit_length_chain_format,
             factor = 20.1168
         )
 
         data object Yard : Unit(
             nameResId = R.string.unit_length_yard,
+            formatResId = R.string.unit_length_yard_format,
             factor = 0.9144
         )
 
         data object Foot : Unit(
             nameResId = R.string.unit_length_foot,
+            formatResId = R.string.unit_length_foot_format,
             factor = 0.3048
         )
 
         data object Mil : Unit(
             nameResId = R.string.unit_length_mil,
+            formatResId = R.string.unit_length_mil_format,
             factor = 0.0000254
         )
 
         data object Inch : Unit(
             nameResId = R.string.unit_length_inch,
+            formatResId = R.string.unit_length_inch_format,
             factor = 0.0254
         )
 
         data object Fathom : Unit(
             nameResId = R.string.unit_length_fathom,
+            formatResId = R.string.unit_length_fathom_format,
             factor = 1.852
         )
 
         data object Cable : Unit(
             nameResId = R.string.unit_length_cable,
+            formatResId = R.string.unit_length_cable_format,
             factor = 185.2
         )
 
         data object NauticalMile : Unit(
             nameResId = R.string.unit_length_nautical_mile,
+            formatResId = R.string.unit_length_nautical_mile_format,
             factor = 1_852.0
         )
 
         data object Link : Unit(
             nameResId = R.string.unit_length_link,
+            formatResId = R.string.unit_length_link_format,
             factor = 0.201168
         )
 
         data object Rod : Unit(
             nameResId = R.string.unit_length_rod,
+            formatResId = R.string.unit_length_rod_format,
             factor = 5.0292
         )
 
         data object AstronomicalUnit : Unit(
             nameResId = R.string.unit_length_astronomical_unit,
+            formatResId = R.string.unit_length_astronomical_unit_format,
             factor = 1.495979e+11
         )
 
         data object Parsec : Unit(
             nameResId = R.string.unit_length_parsec,
+            formatResId = R.string.unit_length_parsec_format,
             factor = 3.0857e+16
         )
 
         data object LightYear : Unit(
             nameResId = R.string.unit_length_light_year,
+            formatResId = R.string.unit_length_light_year_format,
             factor = 9.4607e+15
         )
     }

app/src/main/kotlin/com/simplemobiletools/calculator/helpers/converters/MassConverter.kt

@@ -6,74 +6,88 @@ object MassConverter : Converter {
     override val nameResId: Int = R.string.unit_mass
     override val imageResId: Int = R.drawable.ic_scale_vector
 
-    sealed class Unit(nameResId: Int, factor: Double) : Converter.Unit(nameResId, factor) {
+    sealed class Unit(nameResId: Int, formatResId: Int, factor: Double) : Converter.Unit(nameResId, formatResId, factor) {
         data object Gram : Unit(
             nameResId = R.string.unit_mass_gram,
+            formatResId = R.string.unit_mass_gram_format,
             factor = 0.001
         )
 
         data object Kilogram : Unit(
             nameResId = R.string.unit_mass_kilogram,
+            formatResId = R.string.unit_mass_kilogram_format,
             factor = 1.0
         )
 
         data object Milligram : Unit(
             nameResId = R.string.unit_mass_milligram,
+            formatResId = R.string.unit_mass_milligram_format,
             factor = 0.000001
         )
 
         data object Microgram : Unit(
             nameResId = R.string.unit_mass_microgram,
+            formatResId = R.string.unit_mass_microgram_format,
             factor = 0.000000001
         )
 
         data object Tonne : Unit(
             nameResId = R.string.unit_mass_tonne,
+            formatResId = R.string.unit_mass_tonne_format,
             factor = 1_000.0
         )
 
         data object Pound : Unit(
             nameResId = R.string.unit_mass_pound,
+            formatResId = R.string.unit_mass_pound_format,
             factor =  0.45359237
         )
 
         data object Ounce : Unit(
             nameResId = R.string.unit_mass_ounce,
+            formatResId = R.string.unit_mass_ounce_format,
             factor = 0.028349523125
         )
 
         data object Grain : Unit(
             nameResId = R.string.unit_mass_grain,
+            formatResId = R.string.unit_mass_grain_format,
             factor = 0.00006479891
         )
 
         data object Dram : Unit(
             nameResId = R.string.unit_mass_dram,
+            formatResId = R.string.unit_mass_dram_format,
             factor = 0.0017718451953125
         )
 
         data object Stone : Unit(
             nameResId = R.string.unit_mass_stone,
+            formatResId = R.string.unit_mass_stone_format,
             factor = 6.35029318
         )
 
         data object LongTon : Unit(
             nameResId = R.string.unit_mass_long_ton,
+            formatResId = R.string.unit_mass_long_ton_format,
             factor = 1_016.0469088
         )
 
         data object ShortTon : Unit(
             nameResId = R.string.unit_mass_short_ton,
+            formatResId = R.string.unit_mass_short_ton_format,
             factor = 907.18474
         )
 
         data object Carat : Unit(
             nameResId = R.string.unit_mass_carat,
+            formatResId = R.string.unit_mass_carat_format,
             factor = 0.0002051965483
         )
 
         data object CaratMetric : Unit(
             nameResId = R.string.unit_mass_carat_metric,
+            formatResId = R.string.unit_mass_carat_metric_format,
             factor = 0.0002
         )
     }

app/src/main/kotlin/com/simplemobiletools/calculator/helpers/converters/TemperatureConverter.kt

@@ -6,10 +6,11 @@ object TemperatureConverter : Converter {
     override val nameResId: Int = R.string.unit_temperature
     override val imageResId: Int = R.drawable.ic_thermostat_vector
 
-    sealed class Unit(nameResId: Int, factor: Double) : Converter.Unit(nameResId, factor) {
+    sealed class Unit(nameResId: Int, formatResId: Int, factor: Double) : Converter.Unit(nameResId, formatResId, factor) {
 
         data object Celsius : Unit(
             nameResId = R.string.unit_temperature_celsius,
+            formatResId = R.string.unit_temperature_celsius_format,
             factor = 1.0
         ) {
             const val KELVIN_OFFSET = 273.15
@@ -20,6 +21,7 @@ object TemperatureConverter : Converter {
 
         data object Delisle : Unit(
             nameResId = R.string.unit_temperature_delisle,
+            formatResId = R.string.unit_temperature_delisle_format,
             factor = 2.0 / 3
         ) {
             private const val KELVIN_OFFSET = 373.15
@@ -31,6 +33,7 @@ object TemperatureConverter : Converter {
 
         data object Fahrenheit : Unit(
             nameResId = R.string.unit_temperature_fahrenheit,
+            formatResId = R.string.unit_temperature_fahrenheit_format,
             factor = 9.0 / 5
         ) {
             private const val CELSIUS_OFFSET = 32
@@ -42,6 +45,7 @@ object TemperatureConverter : Converter {
 
         data object Newton : Unit(
             nameResId = R.string.unit_temperature_newton,
+            formatResId = R.string.unit_temperature_newton_format,
             factor = 100.0 / 33
         ) {
             private const val KELVIN_OFFSET = Celsius.KELVIN_OFFSET
@@ -53,11 +57,13 @@ object TemperatureConverter : Converter {
 
         data object Rankine : Unit(
             nameResId = R.string.unit_temperature_rankine,
+            formatResId = R.string.unit_temperature_rankine_format,
             factor = 5.0 / 9
         )
 
         data object Reaumur : Unit(
             nameResId = R.string.unit_temperature_reaumur,
+            formatResId = R.string.unit_temperature_reaumur_format,
             factor =  5.0 / 4
         ) {
             private const val KELVIN_OFFSET = Celsius.KELVIN_OFFSET
@@ -69,6 +75,7 @@ object TemperatureConverter : Converter {
 
         data object Romer : Unit(
             nameResId = R.string.unit_temperature_romer,
+            formatResId = R.string.unit_temperature_romer_format,
             factor = 40.0 / 21
         ) {
             private const val KELVIN_OFFSET = Celsius.KELVIN_OFFSET
@@ -81,6 +88,7 @@ object TemperatureConverter : Converter {
 
         data object GasMark : Unit(
             nameResId = R.string.unit_temperature_gas_mark,
+            formatResId = R.string.unit_temperature_gas_mark_format,
             factor = 25.0
         ) {
             private const val FAHRENHEIT_OFFSET = 250
@@ -92,6 +100,7 @@ object TemperatureConverter : Converter {
 
         data object Kelvin : Unit(
             nameResId = R.string.unit_temperature_kelvin,
+            formatResId = R.string.unit_temperature_kelvin_format,
             factor = 1.0
         )
     }

app/src/main/kotlin/com/simplemobiletools/calculator/helpers/converters/TimeConverter.kt

@@ -6,7 +6,7 @@ object TimeConverter : Converter {
     override val nameResId: Int = R.string.unit_time
     override val imageResId: Int = com.simplemobiletools.commons.R.drawable.ic_clock_vector
 
-    sealed class Unit(nameResId: Int, factor: Double) : Converter.Unit(nameResId, factor) {
+    sealed class Unit(nameResId: Int, formatResId: Int, factor: Double) : Converter.Unit(nameResId, formatResId, factor) {
         companion object {
             private const val MINUTE = 60.0
             private const val HOUR = 60.0 * MINUTE
@@ -16,116 +16,139 @@ object TimeConverter : Converter {
 
         data object Hour : Unit(
             nameResId = R.string.unit_time_hour,
+            formatResId = R.string.unit_time_hour_format,
             factor = HOUR
         )
 
         data object Minute : Unit(
             nameResId = R.string.unit_time_minute,
+            formatResId = R.string.unit_time_minute_format,
             factor = MINUTE
         )
 
         data object Second : Unit(
             nameResId = R.string.unit_time_second,
+            formatResId = R.string.unit_time_second_format,
             factor = 1.0
         )
 
         data object Millisecond : Unit(
             nameResId = R.string.unit_time_millisecond,
+            formatResId = R.string.unit_time_millisecond_format,
             factor = 0.001
         )
 
         data object Microsecond : Unit(
             nameResId = R.string.unit_time_microsecond,
+            formatResId = R.string.unit_time_microsecond_format,
             factor = 0.000001
         )
 
         data object Nanosecond : Unit(
             nameResId = R.string.unit_time_nanosecond,
+            formatResId = R.string.unit_time_nanosecond_format,
             factor = 0.000000001
         )
 
         data object Picosecond : Unit(
             nameResId = R.string.unit_time_picosecond,
+            formatResId = R.string.unit_time_picosecond_format,
             factor = 0.000000000001
         )
 
         data object Day : Unit(
             nameResId = R.string.unit_time_day,
+            formatResId = R.string.unit_time_day_format,
             factor = DAY
         )
 
         data object Week : Unit(
             nameResId = R.string.unit_time_week,
+            formatResId = R.string.unit_time_week_format,
             factor = DAY * 7
         )
 
         data object MonthFull : Unit(
             nameResId = R.string.unit_time_month_full,
+            formatResId = R.string.unit_time_month_full_format,
             factor = DAY * 30
         )
 
         data object MonthHollow : Unit(
             nameResId = R.string.unit_time_month_hollow,
+            formatResId = R.string.unit_time_month_hollow_format,
             factor = DAY * 29
         )
 
         data object MonthSynodic : Unit(
             nameResId = R.string.unit_time_month_synodic,
+            formatResId = R.string.unit_time_month_synodic_format,
             factor = DAY * 29.530589
         )
 
         data object MonthGregorianAverage : Unit(
             nameResId = R.string.unit_time_month_gregorian_average,
+            formatResId = R.string.unit_time_month_gregorian_average_format,
             factor = DAY * 30.346875
         )
 
         data object YearLeap : Unit(
             nameResId = R.string.unit_time_year_leap,
+            formatResId = R.string.unit_time_year_leap_format,
             factor = DAY * 366
         )
 
         data object YearGregorian : Unit(
             nameResId = R.string.unit_time_year_gregorian,
+            formatResId = R.string.unit_time_year_gregorian_format,
             factor = GREGORIAN_YEAR
         )
 
         data object YearJulian : Unit(
             nameResId = R.string.unit_time_year_julian,
+            formatResId = R.string.unit_time_year_julian_format,
             factor = DAY * 365.25
         )
 
         data object Jiffy : Unit(
             nameResId = R.string.unit_time_jiffy,
+            formatResId = R.string.unit_time_jiffy_format,
             factor = 1 / 60.0
         )
 
         data object Moment : Unit(
             nameResId = R.string.unit_time_moment,
+            formatResId = R.string.unit_time_moment_format,
             factor = 90.0
         )
 
         data object Fortnight : Unit(
             nameResId = R.string.unit_time_fortnight,
+            formatResId = R.string.unit_time_fortnight_format,
             factor = DAY * 7 * 2
         )
 
         data object Decade : Unit(
             nameResId = R.string.unit_time_decade,
+            formatResId = R.string.unit_time_decade_format,
             factor = GREGORIAN_YEAR * 10
         )
 
         data object Century : Unit(
             nameResId = R.string.unit_time_century,
+            formatResId = R.string.unit_time_century_format,
             factor = GREGORIAN_YEAR * 100
         )
 
         data object Millennium : Unit(
             nameResId = R.string.unit_time_millennium,
+            formatResId = R.string.unit_time_millennium_format,
             factor = GREGORIAN_YEAR * 1000
         )
 
         data object AtomicUnit : Unit(
             nameResId = R.string.unit_time_atomic_unit,
+            formatResId = R.string.unit_time_atomic_unit_format,
             factor = 0.00000000000000002418884254
         )
     }

app/src/main/kotlin/com/simplemobiletools/calculator/helpers/converters/VolumeConverter.kt

@@ -6,159 +6,190 @@ object VolumeConverter : Converter {
     override val nameResId: Int = R.string.unit_volume
     override val imageResId: Int = R.drawable.ic_drop_vector
 
-    sealed class Unit(nameResId: Int, factor: Double) : Converter.Unit(nameResId, factor) {
+    sealed class Unit(nameResId: Int, formatResId: Int, factor: Double) : Converter.Unit(nameResId, formatResId, factor) {
         data object CubicMeter : Unit(
             nameResId = R.string.unit_volume_cubic_meter,
+            formatResId = R.string.unit_volume_cubic_meter_format,
             factor = 1.0
         )
 
         data object CubicDecimeter : Unit(
             nameResId = R.string.unit_volume_cubic_decimeter,
+            formatResId = R.string.unit_volume_cubic_decimeter_format,
             factor = 0.001
         )
 
         data object CubicCentimeter : Unit(
             nameResId = R.string.unit_volume_cubic_centimeter,
+            formatResId = R.string.unit_volume_cubic_centimeter_format,
             factor = 0.000001
         )
 
         data object CubicMillimeter : Unit(
             nameResId = R.string.unit_volume_cubic_millimeter,
+            formatResId = R.string.unit_volume_cubic_millimeter_format,
             factor = 0.000000001
         )
 
         data object Liter : Unit(
             nameResId = R.string.unit_volume_liter,
+            formatResId = R.string.unit_volume_liter_format,
             factor = 0.001
         )
 
         data object Centiliter : Unit(
             nameResId = R.string.unit_volume_centiliter,
+            formatResId = R.string.unit_volume_centiliter_format,
             factor = 0.0001
         )
 
         data object Deciliter : Unit(
             nameResId = R.string.unit_volume_deciliter,
+            formatResId = R.string.unit_volume_deciliter_format,
             factor = 0.00001
         )
 
         data object Milliliter : Unit(
             nameResId = R.string.unit_volume_milliliter,
+            formatResId = R.string.unit_volume_milliliter_format,
             factor = 0.000001
         )
 
         data object AcreFoot : Unit(
             nameResId = R.string.unit_volume_acre_foot,
+            formatResId = R.string.unit_volume_acre_foot_format,
             factor = 1_233.48183754752
         )
 
         data object CubicYard : Unit(
             nameResId = R.string.unit_volume_cubic_yard,
+            formatResId = R.string.unit_volume_cubic_yard_format,
             factor = 0.764554857984
         )
 
         data object CubicFoot : Unit(
             nameResId = R.string.unit_volume_cubic_foot,
+            formatResId = R.string.unit_volume_cubic_foot_format,
             factor = 0.028316846592
         )
 
         data object CubicInch : Unit(
             nameResId = R.string.unit_volume_cubic_inch,
+            formatResId = R.string.unit_volume_cubic_inch_format,
             factor = 0.000016387064
         )
 
         data object BarrelUS : Unit(
             nameResId = R.string.unit_volume_barrel_us,
+            formatResId = R.string.unit_volume_barrel_us_format,
             factor = 0.119240471196
         )
 
         data object GallonUS : Unit(
             nameResId = R.string.unit_volume_gallon_us,
+            formatResId = R.string.unit_volume_gallon_us_format,
             factor = 0.003785411784
         )
 
         data object QuartUS : Unit(
             nameResId = R.string.unit_volume_quart_us,
+            formatResId = R.string.unit_volume_quart_us_format,
             factor = 0.000946352946
         )
 
         data object PintUS : Unit(
             nameResId = R.string.unit_volume_pint_us,
+            formatResId = R.string.unit_volume_pint_us_format,
             factor = 0.000473176473
         )
 
         data object GillUS : Unit(
             nameResId = R.string.unit_volume_gill_us,
+            formatResId = R.string.unit_volume_gill_us_format,
             factor = 0.00011829411825
         )
 
         data object FluidOunceUS : Unit(
             nameResId = R.string.unit_volume_fluid_ounce_us,
+            formatResId = R.string.unit_volume_fluid_ounce_us_format,
             factor = 0.00003
         )
 
         data object DropUS : Unit(
             nameResId = R.string.unit_volume_drop_us,
+            formatResId = R.string.unit_volume_drop_us_format,
             factor = 0.00000008214869322916
         )
 
         data object TeaspoonUS : Unit(
             nameResId = R.string.unit_volume_teaspoon_us,
+            formatResId = R.string.unit_volume_teaspoon_us_format,
             factor = 0.000005
         )
 
         data object TablespoonUS : Unit(
             nameResId = R.string.unit_volume_tablespoon_us,
+            formatResId = R.string.unit_volume_tablespoon_us_format,
             factor = 0.000015
         )
 
         data object CupUS : Unit(
             nameResId = R.string.unit_volume_cup_us,
+            formatResId = R.string.unit_volume_cup_us_format,
             factor = 0.00024
         )
 
         data object BarrelImperial : Unit(
             nameResId = R.string.unit_volume_barrel_imperial,
+            formatResId = R.string.unit_volume_barrel_imperial_format,
             factor = 0.16365924
         )
 
         data object GallonImperial : Unit(
             nameResId = R.string.unit_volume_gallon_imperial,
+            formatResId = R.string.unit_volume_gallon_imperial_format,
             factor = 0.00454609
         )
 
         data object QuartImperial : Unit(
             nameResId = R.string.unit_volume_quart_imperial,
+            formatResId = R.string.unit_volume_quart_imperial_format,
             factor = 0.0011365225
         )
 
         data object PintImperial : Unit(
             nameResId = R.string.unit_volume_pint_imperial,
+            formatResId = R.string.unit_volume_pint_imperial_format,
             factor = 0.00056826125
         )
 
         data object GillImperial : Unit(
             nameResId = R.string.unit_volume_gill_imperial,
+            formatResId = R.string.unit_volume_gill_imperial_format,
             factor = 0.0001420653125
         )
 
         data object FluidOunceImperial : Unit(
             nameResId = R.string.unit_volume_fluid_ounce_imperial,
+            formatResId = R.string.unit_volume_fluid_ounce_imperial_format,
             factor = 0.0000284130625
         )
 
         data object DropImperial : Unit(
             nameResId = R.string.unit_volume_drop_imperial,
+            formatResId = R.string.unit_volume_drop_imperial_format,
             factor = 0.0000000986564670138
         )
 
         data object TeaspoonImperial : Unit(
             nameResId = R.string.unit_volume_teaspoon_imperial,
+            formatResId = R.string.unit_volume_teaspoon_imperial_format,
             factor = 0.00000591938802083
         )
 
         data object TablespoonImperial : Unit(
             nameResId = R.string.unit_volume_tablespoon_imperial,
+            formatResId = R.string.unit_volume_tablespoon_imperial_format,
             factor = 0.0000177581640625
         )
     }

app/src/main/kotlin/com/simplemobiletools/calculator/views/ConverterView.kt

@@ -6,6 +6,7 @@ import android.content.res.ColorStateList
 import android.util.AttributeSet
 import android.view.View
 import android.widget.LinearLayout
+import android.widget.TextView
 import androidx.core.widget.TextViewCompat
 import com.simplemobiletools.calculator.R
 import com.simplemobiletools.calculator.databinding.ViewConverterBinding
@@ -13,6 +14,7 @@ import com.simplemobiletools.calculator.helpers.COMMA
 import com.simplemobiletools.calculator.helpers.DOT
 import com.simplemobiletools.calculator.helpers.NumberFormatHelper
 import com.simplemobiletools.calculator.helpers.converters.Converter
+import com.simplemobiletools.calculator.helpers.converters.ValueWithUnit
 import com.simplemobiletools.commons.dialogs.RadioGroupDialog
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.models.RadioItem
@@ -55,7 +57,7 @@ class ConverterView @JvmOverloads constructor(
         topUnit = converter.defaultTopUnit
         bottomUnit = converter.defaultBottomUnit
 
-        binding.topUnitText.text = "0"
+        binding.topUnitText.setFormattedUnitText(topUnit!!.withValue(0.0))
         updateBottomValue()
         updateUnitLabels()
     }
@@ -79,8 +81,8 @@ class ConverterView @JvmOverloads constructor(
     }
 
     fun clear() {
-        binding.topUnitText.text = "0"
+        binding.topUnitText.setFormattedUnitText(topUnit!!.withValue(0.0))
-        binding.bottomUnitText.text = "0"
+        binding.bottomUnitText.setFormattedUnitText(bottomUnit!!.withValue(0.0))
     }
 
     fun numpadClicked(id: Int) {
@@ -102,7 +104,7 @@ class ConverterView @JvmOverloads constructor(
     }
 
     private fun decimalClicked() {
-        var value = binding.topUnitText.text.toString()
+        var value = binding.topUnitText.text.removeUnit()
         if (!value.contains(decimalSeparator)) {
             when (value) {
                 "0" -> value = "0$decimalSeparator"
@@ -110,30 +112,31 @@ class ConverterView @JvmOverloads constructor(
                 else -> value += decimalSeparator
             }
 
-            binding.topUnitText.text = value
+            binding.topUnitText.text = topUnit?.format(context, value)
         }
     }
 
     private fun zeroClicked() {
-        val value = binding.topUnitText.text
+        val value = binding.topUnitText.text.removeUnit()
         if (value != "0" || value.contains(decimalSeparator)) {
             addDigit(0)
         }
     }
 
     private fun addDigit(digit: Int) {
-        var value = binding.topUnitText.text.toString()
+        var value = binding.topUnitText.text.removeUnit()
         if (value == "0") {
             value = ""
         }
 
         value += digit
         value = formatter.addGroupingSeparators(value)
-        binding.topUnitText.text = value
+        binding.topUnitText.text = topUnit!!.format(context, value)
     }
 
     private fun switch() {
         ::topUnit.swapWith(::bottomUnit)
+        updateTopValue()
         updateBottomValue()
         updateUnitLabels()
     }
@@ -143,10 +146,14 @@ class ConverterView @JvmOverloads constructor(
         binding.bottomUnitName.text = bottomUnit?.nameResId?.let { context.getString(it) }
     }
 
+    private fun updateTopValue() {
+        binding.topUnitText.setFormattedUnitText(topUnit!!.withValue(binding.topUnitText.getValue()))
+    }
+
     private fun updateBottomValue() {
         converter?.apply {
-            val converted = convert(topUnit!!.withValue(formatter.removeGroupingSeparator(binding.topUnitText.text.toString()).toDouble()), bottomUnit!!).value
+            val converted = convert(topUnit!!.withValue(binding.topUnitText.getValue()), bottomUnit!!).value
-            binding.bottomUnitText.text = formatter.doubleToString(converted)
+            binding.bottomUnitText.setFormattedUnitText(bottomUnit!!.withValue(converted))
         }
     }
 
@@ -156,11 +163,21 @@ class ConverterView @JvmOverloads constructor(
             this.groupingSeparator = groupingSeparator
             formatter.decimalSeparator = decimalSeparator
             formatter.groupingSeparator = groupingSeparator
-            binding.topUnitText.text = "0"
+            binding.topUnitText.setFormattedUnitText(topUnit!!.withValue(0.0))
-            binding.bottomUnitText.text = "0"
+            binding.bottomUnitText.setFormattedUnitText(bottomUnit!!.withValue(0.0))
         }
     }
 
+    private fun TextView.setFormattedUnitText(value: ValueWithUnit<*>) {
+        text = value.unit.format(context, formatter.doubleToString(value.value))
+    }
+
+    private fun TextView.getValue(): Double {
+        return formatter.removeGroupingSeparator(text.removeUnit()).toDouble()
+    }
+
+    private fun CharSequence.removeUnit() = filter { it.isDigit() || it == '.' || it == ',' }.toString()
+
     private fun <T> KMutableProperty0<T>.swapWith(other: KMutableProperty0<T>) {
         this.get().also {
             this.set(other.get())
@@ -171,7 +188,7 @@ class ConverterView @JvmOverloads constructor(
     private fun View.setClickListenerForUnitSelector(propertyToChange: KMutableProperty0<Converter.Unit?>, otherProperty: KMutableProperty0<Converter.Unit?>) {
         setOnClickListener {
             val items = ArrayList(converter!!.units.mapIndexed { index, unit ->
-                RadioItem(index, context.getString(unit.nameResId), unit)
+                RadioItem(index, unit.getNameWithSymbol(context), unit)
             })
             RadioGroupDialog(context as Activity, items, converter!!.units.indexOf(propertyToChange.get())) {
                 val unit = it as Converter.Unit
@@ -179,6 +196,7 @@ class ConverterView @JvmOverloads constructor(
                     switch()
                 } else if (unit != propertyToChange.get()) {
                     propertyToChange.set(unit)
+                    updateTopValue()
                     updateBottomValue()
                 }
                 updateUnitLabels()

app/src/main/res/values/donottranslate.xml

@@ -2,6 +2,124 @@
 <resources>
     <string name="package_name">com.simplemobiletools.calculator</string>
 
+    <string name="unit_name_with_symbol_format">%s (%s)</string>
+    <string name="unit_length_kilometer_format">%s km</string>
+    <string name="unit_length_hectometer_format">%s hm</string>
+    <string name="unit_length_decameter_format">%s dam</string>
+    <string name="unit_length_meter_format">%s m</string>
+    <string name="unit_length_decimeter_format">%s dm</string>
+    <string name="unit_length_centimeter_format">%s cm</string>
+    <string name="unit_length_millimeter_format">%s mm</string>
+    <string name="unit_length_micrometer_format">%s μm</string>
+    <string name="unit_length_nanometer_format">%s nm</string>
+    <string name="unit_length_picometer_format">%s pm</string>
+    <string name="unit_length_angstrom_format">%s Å</string>
+    <string name="unit_length_mile_format">%s mi</string>
+    <string name="unit_length_chain_format">%s ch</string>
+    <string name="unit_length_yard_format">%s yd</string>
+    <string name="unit_length_foot_format">%s ft</string>
+    <string name="unit_length_mil_format">%s mil</string>
+    <string name="unit_length_inch_format">%s in</string>
+    <string name="unit_length_fathom_format">%s fathom</string>
+    <string name="unit_length_cable_format">%s cable</string>
+    <string name="unit_length_nautical_mile_format">%s NM</string>
+    <string name="unit_length_link_format">%s lnk</string>
+    <string name="unit_length_rod_format">%s rd</string>
+    <string name="unit_length_astronomical_unit_format">%s au</string>
+    <string name="unit_length_parsec_format">%s pc</string>
+    <string name="unit_length_light_year_format">%s ly</string>
+    <string name="unit_area_square_kilometer_format">%s km²</string>
+    <string name="unit_area_square_meter_format">%s m²</string>
+    <string name="unit_area_square_centimeter_format">%s cm²</string>
+    <string name="unit_area_square_millimeter_format">%s mm²</string>
+    <string name="unit_area_square_mile_format">%s sq mi</string>
+    <string name="unit_area_square_yard_format">%s sq yd</string>
+    <string name="unit_area_square_foot_format">%s sq ft</string>
+    <string name="unit_area_square_mil_format">%s sq mil</string>
+    <string name="unit_area_square_inch_format">%s sq in</string>
+    <string name="unit_area_square_rod_format">%s sq rd</string>
+    <string name="unit_area_acre_format">%s ac</string>
+    <string name="unit_area_are_format">%s a</string>
+    <string name="unit_area_dunam_format">%s dunam</string>
+    <string name="unit_area_hectare_format">%s ha</string>
+    <string name="unit_volume_cubic_meter_format">%s m³</string>
+    <string name="unit_volume_cubic_decimeter_format">%s dm³</string>
+    <string name="unit_volume_cubic_centimeter_format">%s cm³</string>
+    <string name="unit_volume_cubic_millimeter_format">%s mm³</string>
+    <string name="unit_volume_liter_format">%s l</string>
+    <string name="unit_volume_centiliter_format">%s cl</string>
+    <string name="unit_volume_deciliter_format">%s dl</string>
+    <string name="unit_volume_milliliter_format">%s ml</string>
+    <string name="unit_volume_acre_foot_format">%s ac ft</string>
+    <string name="unit_volume_cubic_yard_format">%s yd³</string>
+    <string name="unit_volume_cubic_foot_format">%s ft³</string>
+    <string name="unit_volume_cubic_inch_format">%s in³</string>
+    <string name="unit_volume_barrel_us_format">%s fl bl (US)</string>
+    <string name="unit_volume_gallon_us_format">%s gal (US)</string>
+    <string name="unit_volume_quart_us_format">%s qt (US)</string>
+    <string name="unit_volume_pint_us_format">%s pt (US fl)</string>
+    <string name="unit_volume_gill_us_format">%s gi (US)</string>
+    <string name="unit_volume_fluid_ounce_us_format">%s US fl oz</string>
+    <string name="unit_volume_drop_us_format">%s gtt</string>
+    <string name="unit_volume_teaspoon_us_format">%s tsp</string>
+    <string name="unit_volume_tablespoon_us_format">%s tbsp</string>
+    <string name="unit_volume_cup_us_format">%s c (US)</string>
+    <string name="unit_volume_barrel_imperial_format">%s bl (imp)</string>
+    <string name="unit_volume_gallon_imperial_format">%s gal (imp)</string>
+    <string name="unit_volume_quart_imperial_format">%s qt (imp)</string>
+    <string name="unit_volume_pint_imperial_format">%s pt (imp)</string>
+    <string name="unit_volume_gill_imperial_format">%s gi (imp)</string>
+    <string name="unit_volume_fluid_ounce_imperial_format">%s fl oz (imp)</string>
+    <string name="unit_volume_drop_imperial_format">%s gtt</string>
+    <string name="unit_volume_teaspoon_imperial_format">%s tsp</string>
+    <string name="unit_volume_tablespoon_imperial_format">%s tbsp</string>
+    <string name="unit_mass_gram_format">%s g</string>
+    <string name="unit_mass_kilogram_format">%s kg</string>
+    <string name="unit_mass_milligram_format">%s mg</string>
+    <string name="unit_mass_microgram_format">%s μm</string>
+    <string name="unit_mass_tonne_format">%s t</string>
+    <string name="unit_mass_pound_format">%s lb</string>
+    <string name="unit_mass_ounce_format">%s oz</string>
+    <string name="unit_mass_grain_format">%s gr</string>
+    <string name="unit_mass_dram_format">%s dr</string>
+    <string name="unit_mass_stone_format">%s st</string>
+    <string name="unit_mass_long_ton_format">%s ton</string>
+    <string name="unit_mass_short_ton_format">%s sh tn</string>
+    <string name="unit_mass_carat_format">%s kt</string>
+    <string name="unit_mass_carat_metric_format">%s ct</string>
+    <string name="unit_temperature_celsius_format">%s°C</string>
+    <string name="unit_temperature_delisle_format">%s°De</string>
+    <string name="unit_temperature_fahrenheit_format">%s°F</string>
+    <string name="unit_temperature_newton_format">%s°N</string>
+    <string name="unit_temperature_rankine_format">%s°R</string>
+    <string name="unit_temperature_reaumur_format">%s°Ré</string>
+    <string name="unit_temperature_romer_format">%s°Rø</string>
+    <string name="unit_temperature_gas_mark_format">%s GM</string>
+    <string name="unit_temperature_kelvin_format">%s K</string>
+    <string name="unit_time_hour_format">%s h</string>
+    <string name="unit_time_minute_format">%s m</string>
+    <string name="unit_time_second_format">%s s</string>
+    <string name="unit_time_millisecond_format">%s ms</string>
+    <string name="unit_time_microsecond_format">%s µs</string>
+    <string name="unit_time_nanosecond_format">%s ns</string>
+    <string name="unit_time_picosecond_format">%s ps</string>
+    <string name="unit_time_day_format">%s d</string>
+    <string name="unit_time_week_format">%s wk</string>
+    <string name="unit_time_month_full_format">%s mo</string>
+    <string name="unit_time_month_hollow_format">%s mo</string>
+    <string name="unit_time_month_synodic_format">%s mo</string>
+    <string name="unit_time_month_gregorian_average_format">%s mo</string>
+    <string name="unit_time_year_leap_format">%s y</string>
+    <string name="unit_time_year_gregorian_format">%s y</string>
+    <string name="unit_time_year_julian_format">%s y</string>
+    <string name="unit_time_jiffy_format">%s j</string>
+    <string name="unit_time_moment_format">%s moment</string>
+    <string name="unit_time_fortnight_format">%s fn</string>
+    <string name="unit_time_decade_format">%s dec</string>
+    <string name="unit_time_century_format">%s c</string>
+    <string name="unit_time_millennium_format">%s millennium</string>
+    <string name="unit_time_atomic_unit_format">%s a.u.</string>
+
     <!-- Release notes -->
     <string name="release_28">Allow customizing the bottom navigation bar color</string>
     <string name="release_18">Added a toggle for preventing the phone from sleeping, enabled by default</string>