Validato
Validato is Android real-time validation library. It automatically starts validation when lifecycle owner is started and stops when owner is stopped.
How to add to your project
Add repository to your root-level build.gradle
allprojects {
repositories {
...
maven { url 'https://jitpack.io' }
}
}
Add the dependency (version = 1.1.1)
dependencies {
implementation 'com.github.rigo-ptz:Validato:Version'
}
How to use
Usual usage in activity or in presenter looks like this:
val validators = listOf(
name.isNotEmpty(),
surname.isNotEmpty(),
email.isValidEmail()
)
ValidationObserver(
lifecycleOwner = this,
validators = validators,
skipFirstEvents = false
) {
// Do something here
btn.isEnabled = it
}
where, for example, "isNotEmpty"
fun TextView.isNotEmpty(
onError: ((String, View) -> Unit)? = null,
onSuccess: ((String, View) -> Unit)? = null
): LiveData<Boolean> {
val subject = MutableLiveData<Boolean>().apply { value = false }
this.doAfterTextChanged {
subject.value = it.isNotEmpty()
if (it.isNotEmpty()) onSuccess?.invoke(it, this) else onError?.invoke(it, this)
}
return subject
}
Validation rules
Create method (or extension function) that returns LiveData and put it into the list!