tcomb-form-native

问题 I'am new in react native , and i'am using tcomb-form library to create forms for my app. I want to add a default values to some of my fields, means when they first appear they must have values by default. This is what i tried so far but the field still appears empty : this.Position = t.struct({ PosName: FormFields.String, }); fields:{ PosName: { placeholder: "Name der Position", error: "Dieses Feld ist erforderlich", label: "Name der Position", value: "some text here ", template: Template },