config.json

{
   "endpoint" : "webapp" , 
   "method" : "POST",
   "schema": [
        {
            "type" : "edittext",
            "hint" : "App Name",
            "id" : "appname",
            "regex" : "[a-zA-Z0-9]",
            "maxLength" : "15",
            "minLength" : "8",
            "default_value" : "Gamoss",
            "isRequired" : true,
            "note" : "Don't include any special characters"
        } ,
        {
            "type" : "textview",
            "size" : "16sp",
            "text" : "Programming is love if you know",
            "gravity" : "start"
        } ,
        {
            "type" : "button" , 
            "action" : "pickImage" ,
            "text" : "Pick App Icon" ,
            "id" : "icon" 
        }
   ] 
}