A lightweight, simplified form validation library for Android

<?xml version="1.0" encoding="utf-8" ?>
<resources xmlns:app="http://schemas.android.com/apk/res-auto">

    <formField
        app:id="@id/inputUsername"
        app:required="true"
        app:minSize="3"
        app:maxSize="25" />

    <formField
        app:id="@id/inputEmail"
        app:email="true" />

    <formField
        app:id="@id/inputPhone"
        app:required="true"
        app:phoneNumber="true" />

    <formField
        app:id="@id/inputPassword"
        app:required="true"
        app:minSize="3"
        app:maxSize="25" />

</resources>

<me.ibrahimsn.lib.FreyaForm
    android:id="@+id/freya"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:config="@xml/form_app">

    <com.google.android.material.textfield.TextInputLayout
        android:id="@+id/inputEmail"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="12dp">

        <com.google.android.material.textfield.TextInputEditText
            android:inputType="textEmailAddress"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="Email Address"/>

    </com.google.android.material.textfield.TextInputLayout>

    <com.google.android.material.textfield.TextInputLayout
        android:id="@+id/inputPassword"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:passwordToggleEnabled="true"
        android:layout_marginBottom="16dp">

        <com.google.android.material.textfield.TextInputEditText
            android:inputType="textPassword"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="Password"/>

    </com.google.android.material.textfield.TextInputLayout>

</me.ibrahimsn.lib.FreyaForm>

val freya = findViewById<FreyaForm>(R.id.freya)
val submitButton = findViewById<Button>(R.id.submit)

/*
 * Listens if the whole form is valid
 */
freya.onValidationChangeListener = {
    Log.d(TAG, "Is form valid: $it")
}

/*
 * Listens for form validation errors after validate()
 */
freya.onErrorListener = {
    Log.d(TAG, "Validation errors: $it")
}

submitButton.setOnClickListener {
    Log.d(TAG, "Is form valid: ${freya.validate()} values: ${freya.values}")
}

/*
 * Listens for validation changes of any form field
 */
freya.onFieldValidationChangeListener = {
    when (it.error) {
        is Ruler.Required -> {
            it.setError("This field is required.")
        }
        is Ruler.Email -> {
            it.setError("Please enter a valid email address.")
        }
        is Ruler.PhoneNumber -> {
            it.setError("Please enter a valid phone number.")
        }
        is Ruler.MinSize -> {
            it.setError("This field must contain at least ${it.error?.param} characters.")
        }
        is Ruler.MaxSize -> {
            it.setError("This field must contain at most ${it.error?.param} characters.")
        }
        is Ruler.Regex -> {
            it.setError("Please provide a valid data.")
        }
    }
}

val values: Map<Int, Any?> = freya.values

freya.setup(
    mapOf(
        R.id.inputUsername to "Thomas"
    )
)

allprojects {
	repositories {
		...
		maven { url 'https://jitpack.io' }
	}
}

dependencies {
    implementation 'com.github.ibrahimsn98:freya:1.0.0'
}