在之前没有使用过UIPickerView，最近有个项目需要写一个日期选择器和性别选择器，查阅了资料，大多数都是用UIPickerView来完成效果，于是就找了一个日期选择器的demo，效果如下：
感觉效果还行，于是在写性别选择器的时候，自己也封装了一个，需要用的时候稍微修改一下就ok了，效果如下：
使用时需要#import "ZGSexPickerView.h"和遵循协议ZGSexPickerViewDelegate
代码：
//ZGSexPickerView.h
#import <UIKit/UIKit.h>
@class ZGSexPickerView;//向前引用
@protocol ZGSexPickerViewDelegate <NSObject>
@optional
/**
返回选择的时间字符串
@param pickerView pickerView
@param sexString 性别字符串
*/
- (void)pickerView:(ZGSexPickerView *)pickerView didSelectSexString:(NSString *)sexString;
@end
@interface ZGSexPickerView : UIView
@property (nonatomic, weak) id<ZGSexPickerViewDelegate> delegate;
- (void)show;
@end
//ZGSexPickerView.m
#import "ZGSexPickerView.h"
@interface ZGSexPickerView () <UIPickerViewDataSource,UIPickerViewDelegate>
@property (nonatomic, strong) NSArray *sexArray;
@property (nonatomic, strong) UIToolbar *toolBar;
@property (nonatomic, strong) UIPickerView *pickerView;
@property (nonatomic, strong) NSString *sex;
@property (nonatomic, strong) UIView *screenView;
@end
@implementation ZGSexPickerView
- (instancetype)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
self.backgroundColor = [UIColor clearColor];
[self initializeUserInterface];
}
return self;
}
#pragma mark - 初始化界面
- (void)initializeUserInterface {
self.sexArray = @[@"保密",@"男",@"女"];
self.sex = @"保密";
//pickerView
//初始化一个PickerView
_pickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 44, kScreenWidth, self.frame.size.height)];
//指定Picker的代理
_pickerView.backgroundColor = [UIColor whiteColor];
_pickerView.dataSource = self;
_pickerView.delegate = self;
//是否要显示选中的指示器(默认值是NO)
_pickerView.showsSelectionIndicator = NO;
[self addSubview:self.pickerView];
//toolBar
_toolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, kScreenWidth, 44)];
_toolBar.barStyle = UIBarStyleBlackTranslucent;
// 设置UIToolbar背景色
_toolBar.barTintColor = [UIColor colorWithRed:239.0/255.0
green:239.0/255.0
blue:244.0/255.0
alpha:1.0];
// 取消按钮
UIBarButtonItem *leftItem = [[UIBarButtonItem alloc] initWithTitle:@" 取消"
style:UIBarButtonItemStylePlain
target:self
action:@selector(removePickView)];
[leftItem setTitleTextAttributes:@{NSFontAttributeName: [UIFont systemFontOfSize:14]}
forState:UIControlStateNormal];
[leftItem setTintColor:[UIColor grayColor]];
UIBarButtonItem *centerSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
// 确定按钮
UIBarButtonItem *rightItem = [[UIBarButtonItem alloc] initWithTitle:@"确定 "
style:UIBarButtonItemStyleDone
target:self
action:@selector(doneBtnClicked)];
[rightItem setTitleTextAttributes:@{NSFontAttributeName: [UIFont systemFontOfSize:14]}
forState:UIControlStateNormal];
// 设置字体颜色
//[rightItem setTintColor:[UIColor colorWithRed:67.0/255.0 green:199.0/255.0 blue:203.0/255.0 alpha:1.0]];
_toolBar.items = @[leftItem,centerSpace,rightItem];
[self addSubview:self.toolBar];
}
/**
移除PickerView
*/
- (void)removePickView
{
[self.screenView removeFromSuperview];
}
/**
确定
*/
- (void)doneBtnClicked
{
[self.delegate pickerView:self didSelectSexString:self.sex];
[self removePickView];
}
- (void)show
{
_screenView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, kScreenWidth, kScreenHeigth)];
_screenView.backgroundColor = [UIColor colorWithRed:0/255.0
green:0/255.0
blue:0/255.0
alpha:0.3];
[_screenView addSubview:self];
[[UIApplication sharedApplication].keyWindow addSubview:_screenView];
}
- (void)layoutSubviews {
[super layoutSubviews];
}
//返回列数
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView{
return 1;
}
//每列行数
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component{
return self.sexArray.count;
}
//组件宽度
-(CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component{
return kScreenWidth;
}
//每行组件高度
-(CGFloat)pickerView:(UIPickerView *)pickerView rowHeightForComponent:(NSInteger)component{
return 40;
}
//组件每行的标题
-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component{
return self.sexArray[row];
}
//选中行的事件处理
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
self.sex = self.sexArray[row];
// [pickerView selectedRowInComponent:0];
}
#pragma mark - Action
#pragma mark - 懒加载
@end
使用方法
-(void)showSexpickerView{
ZGSexPickerView *pickerView = [[ZGSexPickerView alloc] initWithFrame:(CGRectMake(0, kScreenHeigth - 216, kScreenWidth, 216))];
pickerView.delegate = self;
[pickerView show];
}
-(void)pickerView:(ZGSexPickerView *)pickerView didSelectSexString:(NSString *)sexString{
NSLog(@"选择性别:%@",sexString);
}
新增Swift版：
import UIKit
class ZGJPickerView: UIView {
//数据源数组
//类型自行处理,此处暂定为可变数组
var dataArray: NSMutableArray = {
return NSMutableArray()
}()
//默认选中的字符
var currentStr = ""
private var screenView = UIView()
override func drawRect(rect: CGRect) {
self.creatUI()
}
}
//MARK: - 界面
extension ZGJPickerView{
func creatUI(){
//pickerView
let pickerView = UIPickerView(frame: CGRectMake(0, 44, kScreen_W, self.frame.size.height))
pickerView.backgroundColor = UIColor.whiteColor()
pickerView.dataSource = self
pickerView.delegate = self
//是否要显示选中的指示器(默认值是NO)
pickerView.showsSelectionIndicator = false
self.addSubview(pickerView)
//toolBar
let toolBar = UIToolbar(frame: CGRectMake(0, 0, kScreen_W, 44))
toolBar.barStyle = UIBarStyle.BlackTranslucent
// 设置UIToolbar背景色
toolBar.barTintColor = UIColor(red: 239.0/255.0, green: 239.0/255.0, blue: 244.0/255.0, alpha: 1.0)
// 取消按钮
let leftItem = UIBarButtonItem(title: " 取消", style: UIBarButtonItemStyle.Plain, target: self, action: #selector(ZGJPickerView.removePickView))
leftItem.setTitleTextAttributes([NSFontAttributeName:UIFont.systemFontOfSize(17)], forState: .Normal)
leftItem.tintColor = UIColor.grayColor()
let centerSpace = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: self, action: nil)
// 确定按钮
let rightItem = UIBarButtonItem(title: "确定 ", style: UIBarButtonItemStyle.Done, target: self, action: #selector(ZGJPickerView.doneBtnClicked))
rightItem.setTitleTextAttributes([NSFontAttributeName:UIFont.systemFontOfSize(17)], forState: .Normal)
toolBar.items = [leftItem,centerSpace,rightItem]
self.addSubview(toolBar)
}
}
//MARK: - 点击事件
extension ZGJPickerView{
func removePickView(){
self.screenView.removeFromSuperview()
}
func doneBtnClicked()
{
//做什么自行处理
self.removePickView()
}
func show(){
screenView.frame = CGRectMake(0, 0, kScreen_W, kScreen_H)
screenView.backgroundColor = UIColor(red: 0, green: 0, blue: 0, alpha: 0.3)
screenView.addSubview(self)
UIApplication.sharedApplication().keyWindow?.addSubview(screenView)
}
}
//MARK: UIPickerView协议
extension ZGJPickerView:UIPickerViewDataSource,UIPickerViewDelegate{
//返回列数
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
return 1
}
//返回行数
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return 5//dataArray.count
}
//组件宽度
func pickerView(pickerView: UIPickerView, widthForComponent component: Int) -> CGFloat {
return kScreen_W
}
//每行组件高度
func pickerView(pickerView: UIPickerView, rowHeightForComponent component: Int) -> CGFloat {
return 40
}
//组件每行的标题
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
return "标题"
}
//选中行的事件处理
func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
//row:列 component:组
//自行处理,如dataArray[row]...
}
}
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