iOS/swift之UIPickView
宋嘉懿
1.********************UIPickView****************
/**
UIPickView、省市区
需要注意的问题：同时滑动两列崩溃，解决办法：判断后执行
使用：
let provincepick = LYBUIPickView.init(frame: CGRect(x: 10, y: 0, width: WIDTH, height: 300))
provincepick.provinceCityAreaBlock={
(province,city,area)in
print("\(province)---\(city)---\(area)")
}
view.addSubview(provincepick)
*/
import UIKit
class LYBUIPickView: UIView,UIPickerViewDelegate,UIPickerViewDataSource {
var pickerView:UIPickerView!
var modelArr:[LYBprovinceModel]?//所有数据的模型数组
var provincemodel:LYBprovinceModel?//省模型
var citymodel:LYBCityModel?//市模型
var provinceStr:String?=""//省
var cityStr:String?=""//市
var area:String?=""//区
//定义一个闭包把省市区数据传出去
var provinceCityAreaBlock:(_ province:String,_ city:String,_ area:String)->()={(province:String,city:String,area:String)->()in}
override init(frame: CGRect) {
super.init(frame:frame)
createDatePickview(frame: frame)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
//确认或取消按钮
@objc func sureOrcanceBtnClick(sender:UIButton){
switch sender.tag {
case 20://取消
self.removeFromSuperview()
break
case 21:
self.provinceCityAreaBlock(provinceStr!,cityStr!,area!)
self.removeFromSuperview()
break
default: break
}
}
//解析省市区数据
func parseDate(){
let path=Bundle.main.path(forResource: "shengshiquxianarea.plist", ofType: nil)
let proviceDataArr:NSArray = NSArray(contentsOfFile:path!)!
modelArr=([LYBprovinceModel].deserialize(from: proviceDataArr) as! [LYBprovinceModel])
// print("\(modelArr?.first?.cities?.first?.areas)")
}
//设置默认的省市区字符串
func setDefaultProvinceCityArea(){
provincemodel=modelArr![0]//默认选中第一个省的模型
provinceStr=provincemodel?.state//省名称
if((provincemodel?.cities?.count)!>0){
cityStr=provincemodel?.cities?.first?.city//城市，默认先选第一个
if((provincemodel?.cities?.first?.areas?.count)!>0){
area = provincemodel?.cities?.first?.areas?.first//区，默认先选第一个
}
}
}
func createDatePickview(frame: CGRect){
parseDate()
setDefaultProvinceCityArea()//设置默认的省市区
//取消和确定按钮
let buttonView=UIView.init(frame: CGRect.init(x: 0, y: 0, width: WIDTH, height: 50))
addSubview(buttonView)
let cancelBtn=UIButton.init(frame: CGRect.init(x: 20, y: 0, width: 100, height: 50))
cancelBtn.setTitle("取消", for: UIControl.State.normal)
cancelBtn.tag=20
cancelBtn.addTarget(self, action: #selector(sureOrcanceBtnClick), for: UIControl.Event.touchUpInside)
buttonView.addSubview(cancelBtn)
let sureBtn=UIButton.init(frame: CGRect.init(x: WIDTH-150, y: 0, width: 100, height: 50))
sureBtn.setTitle("确定", for: UIControl.State.normal)
sureBtn.tag=21
sureBtn.addTarget(self, action: #selector(sureOrcanceBtnClick), for: UIControl.Event.touchUpInside)
buttonView.addSubview(sureBtn)
//初始化UIPickerView
pickerView = UIPickerView.init(frame: CGRect(x:0, y:50, width:WIDTH, height:frame.size.height-50))
pickerView.dataSource = self
pickerView.delegate = self
//设置选择框的默认值
pickerView.selectRow(0,inComponent:0,animated:true)
addSubview(pickerView)
}
//设置选择框的列数为3列,继承于UIPickerViewDataSource协议
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 3
}
//设置选择框的行数，继承于UIPickerViewDataSource协议
func pickerView(_ pickerView: UIPickerView,
numberOfRowsInComponent component: Int) -> Int {
if component==0 {
return (modelArr?.count)!
}else if(component==1){
let provincenum=pickerView.selectedRow(inComponent: 0)//第一列选中的行号
provincemodel=modelArr![provincenum]//选中的省的模型
return (provincemodel!.cities?.count)!
}else if(component==2){
let citynum=pickerView.selectedRow(inComponent: 1)//第2列选中的行号
if((provincemodel?.cities?.count)!>citynum){
citymodel=provincemodel?.cities![citynum]//选中的城市模型
}
return (citymodel?.areas?.count)!
}
return 0
}
//设置选择框各显示的内容，继承于UIPickerViewDelegate协议
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int,
forComponent component: Int) -> String? {
if(component==0){
provincemodel=modelArr![row]
return provincemodel?.state
}else if(component==1){
if((provincemodel?.cities?.count)!>row){
citymodel=provincemodel?.cities![row]//选中的城市模型
}
return citymodel!.city
}else if(component==2){
if(citymodel!.areas!.count>row){
return citymodel!.areas![row];
}
}
return ""
}
// //自定义返回每一行返回的内容，如果设置了这个自定义的，上面的titlefor view就被覆盖了
// func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {
//
// return UIView.init()
// }
//选中某一行
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if component==0 {
let provinceIndex=pickerView.selectedRow(inComponent: 0)//第一列选中的行号
provincemodel=modelArr![provinceIndex]//选中的省的模型
provinceStr=provincemodel?.state//省
if((provincemodel?.cities?.count)!>0){
pickerView.reloadComponent(1)
pickerView.selectRow(0, inComponent: 1, animated: true)
cityStr=provincemodel?.cities?.first?.city//城市，默认先选第一个
area=""//如果是澳门国外等没有第三列，在这里置为空，要不然就会显示最有一个数据
if((provincemodel?.cities?.first?.areas?.count)!>0){
area = provincemodel?.cities?.first?.areas?.first//区，默认先选第一个
}
pickerView.reloadComponent(2)
}
}else if(component==1){
let citynum=pickerView.selectedRow(inComponent: 1)//第1列选中的行号
citymodel=provincemodel?.cities![citynum]//选中的城市模型
cityStr=citymodel?.city//选中的城市
pickerView.reloadComponent(2)
area=""//如果是澳门国外等没有第三列，在这里置为空，要不然就会显示最有一个数据
if((citymodel?.areas?.count)!>0){
area=citymodel?.areas?.first
pickerView.selectRow(0, inComponent: 2, animated: true)
}
}else if(component==2){
let areaIndx=pickerView.selectedRow(inComponent: 2)//第2列选中的行号
let citynum=pickerView.selectedRow(inComponent: 1)//第1列选中的行号
citymodel=provincemodel?.cities![citynum]//选中的城市模型
if((citymodel?.areas?.count)!>0){
area=citymodel?.areas![areaIndx]
}
}
self.provinceCityAreaBlock(provinceStr!,cityStr!,area!)
// print("\(provinceStr)---\(cityStr)---\(area)")
}
}
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