val editText = EditText(applicationContext)

editText.apply {
    failWithMessageIf(errorMessage = "Text must not be blank", condition = { it.toString().isBlank() })
    failIf { it.toString().length > 30 }
    failWithMessageIf(errorMessage = "Text must be less than 30 characters", condition = { !it.toString().isDigitsOnly() })
}

editText
    .failWithMessageIf(errorMessage = "Text must not be blank", condition = { it.toString().isBlank() })
    .failIf { !it.toString().isDigitsOnly() }
    .failWithMessageIf(errorMessage = "Text must be less than 30 characters", condition = { it.toString().length > 30 })

editText
    .failWithMessageIf(errorMessage = "Must not be blank", editTextCondition = EditTextCondition.IS_BLANK_OR_EMPTY)

    IS_EMPTY,
    IS_BLANK_OR_EMPTY,
    NOT_VALID_EMAIL,
    NOT_LETTERS_ONLY,
    NOT_NUMBERS_ONLY,
    NOT_LETTERS_OR_NUMBERS_ONLY,
    CONTAINS_SPECIAL_CHARACTERS

if (editText.validationPassed()) {
    // This will return either true or false based on the failures defined
}

editText
    .validate(
        onValidationPassed = {
            // Code to execute if all the validation has passed
        },
        onValidationFailed = {
            // Code to execute if any validation has failed.
        }
    )

onValidationFailed = { errorMessages ->
    // Any failed validation messages are returned here so we can set error messages however we like
    errorMessages.firstOrNull()?.let { firstErrorMessage ->
        // Show Error Toast
        Toast.makeText(applicationContext, firstErrorMessage, Toast.LENGTH_LONG).show()

        // Show error snackbar
        Snackbar.make(findViewById(android.R.id.content), firstErrorMessage, Snackbar.LENGTH_INDEFINITE).show()

        // Show edit text error
        editText.error = firstErrorMessage
    }
}

if(editText1.validationPassed() && editText2.validationPassed() && editText3.validationPassed()) {
            ...
        }

// Varargs of EditTexts using EditTextValidation helper class
EditTextValidation.validationPassed(editText1, editText2, editText3) // Boolean - True or False

// Collection of EditTexts using EditTextValidation helper class
EditTextValidation.validationPassed(listOf(editText1, editText2, editText3)) // Boolean - True or False

// Varargs of EditTexts using EditTextValidation helper class
EditTextValidation.validate(editText1, editText2, editText3,
            onValidationPassed = {
                ...
            },
            onValidationFailed = { failedEditTexts ->
                ...
            })

// Collection of EditTexts using EditTextValidation helper class
EditTextValidation.validate(listOf(editText1, editText2, editText3),
            onValidationPassed = {
                ...
            },
            onValidationFailed = { failedEditTexts ->
                ...
            })

// Set of EditTexts using Collection Extension Method
setOf(editText1, editText2, editText3).validationPassed() // Boolean - True or False

// List of EditTexts using Collection Extension Method
listOf(editText1, editText2, editText3).validationPassed() // Boolean - True or False

// Set of EditTexts using Collection Extension Method
setOf(editText1, editText2, editText3).validate(
            onValidationPassed = {
                ...
            },
            onValidationFailed = { failedEditTexts ->
                ...
            })
            
// List of EditTexts using Collection Extension Method
listOf(editText1, editText2, editText3).validate(
            onValidationPassed = {
                ...
            },
            onValidationFailed = { failedEditTexts ->
                ...
            })

onValidationFailed = { failedEditTexts ->
                failedEditTexts.forEach { failedEditText ->
                    failedEditText.failedValidationMessages.forEach { failedValidationMessage ->
                        failedEditText.error = failedValidationMessage
                    }
                }
            }