Answers for "textfield material ui only numbers"

uitextfield numbers only

//class ViewController: UIViewController, UITextInputTraits {

@IBOutlet weak var textFieldKeyboardType: UITextField!{
    didSet{
        textFieldKeyboardType.keyboardType = UIKeyboardType.NumberPad
    }
}
var keyboardType: UIKeyboardType { 
    get{ 
        return textFieldKeyboardType.keyboardType
    } 
    set{ 
        if newValue != UIKeyboardType.NumberPad{
            self.keyboardType = UIKeyboardType.NumberPad
        }
    } 
}

text field material ui max input for number

<TextField
    required
    id="required"
    label="Required"
    defaultValue="Hello World"
    onInput = {(e) =>{
        e.target.value = Math.max(0, parseInt(e.target.value) ).toString().slice(0,12)
    }}/>