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Simple-Calculator
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fixing another usecase of percentage

This commit is contained in:
tibbi 2021-11-15 20:37:36 +01:00
parent 0a6a49c17c
commit 14bb42c832
1 changed files with 34 additions and 15 deletions
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19
app/src/main/kotlin/com/simplemobiletools/calculator/helpers/CalculatorImpl.kt
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@ -93,6 +93,9 @@ class CalculatorImpl(calculator: Calculator, private val context: Context) {
}
if (lastKey == DIGIT || lastKey == DECIMAL) {
if (lastOperation != "" && operation == PERCENT) {
handlePercent()
} else {
// split to multiple lines just to see when does the crash happen
secondValue = when (operation) {
PLUS -> getSecondValue()
@ -113,6 +116,7 @@ class CalculatorImpl(calculator: Calculator, private val context: Context) {
}
}
}
}
lastKey = operation
lastOperation = operation
@ -138,6 +142,20 @@ class CalculatorImpl(calculator: Calculator, private val context: Context) {
return false
}
// handle percents manually, it doesn't seem to be possible via net.objecthunter:exp4j. "%" is used only for modulo there
// handle cases like 10+200% here
private fun handlePercent() {
var result = calculatePercentage(baseValue, getSecondValue(), lastOperation)
if (result.isInfinite() || result.isNaN()) {
result = 0.0
}
showNewFormula("${baseValue.format()}${getSign(lastOperation)}${getSecondValue().format()}%")
inputDisplayedFormula = result.format()
showNewResult(result.format())
baseValue = result
}
fun handleEquals() {
if (lastKey == EQUALS) {
calculateResult()
@ -203,6 +221,7 @@ class CalculatorImpl(calculator: Calculator, private val context: Context) {
}
// handle percents manually, it doesn't seem to be possible via net.objecthunter:exp4j. "%" is used only for modulo there
// handle cases like 10%200 here
val result = if (sign == "%") {
val second = secondValue / 100f
ExpressionBuilder("${baseValue.format()}*${second.format()}").build().evaluate()