swift4.0 省市区、日期、性别选择器
一、swift日期选择器很简单
datePicker.datePickerMode = UIDatePickerMode.date datePicker=UIDatePicker.init(frame:CGRect.init(x:0, y:44, width:kScreenWidth, height:pickerH-44))
datePicker.locale=Locale.init(identifier:"zh_CN")
datePicker.backgroundColor = UIColor.white
datePicker.addTarget(self, action:#selector(BHJPickerView.dateSelected(_:)), for:UIControlEvents.valueChanged)
datePicker.setDate(Date(), animated:true)
二、性别选择器
genderPicker=UIPickerView.init(frame:CGRect.init(x:0, y:44, width:kScreenWidth, height:pickerH-44))
genderPicker.delegate=self
genderPicker.dataSource=self
genderPicker.backgroundColor = UIColor.white
dataArray=NSMutableArray.init(array: ["男","女"])
self.pickerView(genderPicker, didSelectRow:0, inComponent:0)
三、地址选择器
首先读取本地省、市、区文件
let path =Bundle.main.path(forResource:"city", ofType:"json")
let url =URL(fileURLWithPath: path!)
let addressData =NSData.init(contentsOf: url)
let addressDic = try! JSONSerialization.jsonObject(with: addressData! as Data, options: JSONSerialization.ReadingOptions.mutableContainers) as! NSArray
let dic = addressDic.object(at:0)as!NSDictionary
let provinceArray = dic["childs"]as!NSArray
for I in0.. let provinceDic = provinceArray.object(at: i)as!NSDictionary let provinceM =AddressModel.init() provinceM.region_name= (provinceDic["region_name"]as?String) provinceM.region_id= (provinceDic["region_id"]as!String) provinceM.agency_id= (provinceDic["agency_id"]as?String) provinceM.parent_id= (provinceDic["parent_id"]as!String) provinceM.region_type= (provinceDic["region_type"]as!String) provinceM.childs= (provinceDic["childs"]as! [NSDictionary]) self.dataArray.add(provinceM) 然后执行UIPickerView的协议代理: /// 返回列 /// /// -ParameterpickerView: pickerView /// -Returns: 列 funcnumberOfComponents(in pickerView:UIPickerView) ->Int{ switch isAddress{ case true: return 3 default: return 1 } } /// 返回对应列的行数 /// /// -Parameters: /// - pickerView: pickerView /// - component: 列 /// -Returns: 行 funcpickerView(_pickerView:UIPickerView, numberOfRowsInComponent component:Int) ->Int{ switch isAddress{ case true: if component ==0{ return dataArray.count }elseifcomponent ==1{ return cityArray.count }else{ return districtArray.count } default: return dataArray.count } } /// 返回对应行的title /// /// -Parameters: /// - pickerView: pickerView /// - row: 行 /// - component: 列 /// -Returns: title funcpickerView(_pickerView:UIPickerView, titleForRow row:Int, forComponent component:Int) ->String? { var title ="" switch isAddress{ case true: if component ==0{ let provinceM =dataArray[row]as!AddressModel title = provinceM.region_name??"未知" return title }else if component ==1{ let cityModel =cityArray[row]as!AddressModel title = cityModel.region_name??"未知" return title }else{ let areaModel =districtArray[row]as!AddressModel title = areaModel.region_name??"未知" return title } default: title =dataArray[row]as!String return title } } /// 选择列、行 /// /// -Parameters: /// - pickerView: pickerView /// - row: 行 /// - component: 列 func pickerView(_pickerView:UIPickerView, didSelectRow row:Int, inComponent component:Int) { switch isAddress{ case true: if component ==0{ let provinceM =dataArray[row]as!AddressModel let cityDicArray = provinceM.childs! cityArray.removeAllObjects() for j in 0..cityDicArray.count letcityDic = cityDicArray[j] letcityM =AddressModel.init() cityM.region_name= (cityDic["region_name"]as?String) cityM.region_id= (cityDic["region_id"]as!String) cityM.agency_id= (cityDic["agency_id"]as?String) cityM.parent_id= (cityDic["parent_id"]as!String) cityM.region_type= (cityDic["region_type"]as!String) cityM.childs= (cityDic["childs"]as! [NSDictionary]) cityArray.add(cityM) } // 默认选择当前省的第一个城市对应的区县 self.pickerView(pickerView, didSelectRow:0, inComponent:1) selectedProvince= provinceM }else if component ==1{ let cityModel =cityArray[row]as!AddressModel let areaArray = cityModel.childs! districtArray.removeAllObjects() for j in 0.. letareaDic = areaArray[j] letareaModel =AddressModel.init() areaModel.region_name= (areaDic["region_name"]as?String) areaModel.region_id= (areaDic["region_id"]as!String) areaModel.agency_id= (areaDic["agency_id"]as?String) areaModel.parent_id= (areaDic["parent_id"]as!String) areaModel.region_type= (areaDic["region_type"]as!String) districtArray.add(areaModel) } selectedCity= cityModel self.pickerView(pickerView, didSelectRow:0, inComponent:2) }else{ let areaModel =districtArray[row]as!AddressModel selectedDistrict= areaModel } pickerView.reloadAllComponents() default: selectedGender=dataArray[row]as!String } } 代码地址：https://github.com/bhjmoshang/BHJPickerView.git