validable

Validable is an extensible library that simplifies text field validation for Jetpack Compose by providing abstraction and reusable validation logic.

This is what it looks like :

@Composable  
fun MyScreen() { 
 
     val emailField = remember { EmailValidable() }

    // pass all fields to the withValidable method
    val validator = rememberValidator(emailField)


    TextField(  
	    value = emailField.value,
	    onValueChange = { emailField.value = it }, // update the text  
	    isError = emailField.hasError(), // check if the field is not valid    
	)  
  
	AnimatedVisibility(visible = emailField.hasError()) {
	
	    Text(
                text = emailField.errorMessage ?: "",
            	modifier = Modifier.fillMaxWidth(),
            	style = LocalTextStyle.current.copy(color = MaterialTheme.colors.error)
	    )
        
	}  
	
	Button(
        // a state to check if all fields are valid, without submitting the form
        enabled = validator.isValid,
        onClick = { 
            validator.validate { 
                // will be executed if all fields are valid 
                Toast.makeText(context, "All fields are valid", Toast.LENGTH_SHORT).show()
            } 
        }
    ) { 
		Text(text = "Submit") 
	}  
}  

Gradle setup

Include the validable dependency in your module build.gradle or build.gradle.kts :

dependencies {
    implementation("tech.devscast:validable:<version>")
}

The latest version is

For full documentation, check out https://devscast.github.io/validable

Contributing

We'd love contributions !

We will also try to tag any issues on our issue tracker that we'd love help with, so if you just want to dip in, go have a look.

If you do want to contribute to this project, we have a code of conduct.