本文实例为大家分享了简单封装的iOS下拉选择菜单代码,供大家参考,具体内容如下
// // OrderListDownMenu.h#import <UIKit/UIKit.h>@protocol OrderListDownMenuDelegate <NSObject>- (void)OrderListDownMenu:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath;@endtypedef void(^Dismiss)(void);@interface OrderListDownMenu : UIView<UITableViewDataSource, UITableViewDelegate>@property (nonatomic, strong) UITableView *tableView; @property (nonatomic, assign) id<OrderListDownMenuDelegate> delegate; @property (nonatomic, strong) NSArray *arrData; @property (nonatomic, strong) NSArray *arrImgName; @property (nonatomic, copy) Dismiss dismiss;- (instancetype)initWithDataArr:(NSArray *)dataArr origin:(CGPoint)origin width:(CGFloat)width rowHeight:(CGFloat)rowHeight;- (void)dismissWithCompletion:(void (^)(OrderListDownMenu *object))completion;@end
#import "OrderListDownMenu.h"#define TopToView 63.0f #define rightToView kScreenWidth - 15.0f #define LeftToView kScreenWidth - 145.0 - 10.0f #define CellLineEdgeInsets UIEdgeInsetsMake(0, -80, 0, 0) #define kScreenWidth[UIScreen mainScreen].bounds.size.width #define kScreenHeight[UIScreen mainScreen].bounds.size.height@interface OrderListDownMenu()@property (nonatomic, assign) CGPoint origin; @property (nonatomic, assign) CGFloat rowHeight;@end@implementation OrderListDownMenu- (instancetype)initWithDataArr:(NSArray *)dataArr origin:(CGPoint)origin width:(CGFloat)width rowHeight:(CGFloat)rowHeight {self = [super initWithFrame:CGRectMake(0, 0, kScreenWidth, kScreenHeight)]; if (self) { if (rowHeight <= 0) { rowHeight = 50; }// 设置背景颜色 self.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.2]; self.origin = origin; self.rowHeight = rowHeight; self.arrData = [dataArr copy]; self.tableView = [[UITableView alloc] initWithFrame:CGRectMake(origin.x + LeftToView, origin.y + TopToView, width, rowHeight * dataArr.count) style:UITableViewStylePlain]; _tableView.dataSource = self; _tableView.delegate = self; [self addSubview:_tableView];_tableView.backgroundColor = [UIColor whiteColor]; _tableView.layer.cornerRadius = 2; _tableView.bounces = NO; _tableView.layer.cornerRadius = 8; _tableView.separatorColor = [UIColor colorWithWhite:0.3 alpha:1]; _tableView.separatorStyle = UITableViewCellSelectionStyleNone; [_tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cell"];if ([self.tableView respondsToSelector:@selector(setSeparatorInset:)]) { [self.tableView setSeparatorInset:CellLineEdgeInsets]; }if ([self.tableView respondsToSelector:@selector(setLayoutMargins:)]) { [self.tableView setLayoutMargins:CellLineEdgeInsets]; } } return self; }- (void)layoutSubviews { [super layoutSubviews]; }- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return self.arrData.count; }- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { return self.rowHeight; }- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"]; cell.textLabel.textColor = THEME_COLOR_GRAY_1; cell.textLabel.font = [UIFont systemFontOfSize:15]; cell.textLabel.text = self.arrData[indexPath.row];if (self.arrImgName.count > indexPath.row) { cell.imageView.image = [UIImage imageNamed:self.arrImgName[indexPath.row]]; cell.imageView.contentMode = UIViewContentModeScaleAspectFit; }UILabel *label = [[UILabel alloc] init]; label.frame = CGRectMake(0, 49, _tableView.frame.size.width, 0.5); label.backgroundColor = THEME_SEPARATOR_COLOR; [cell.contentView addSubview:label];return cell; }- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {if([self.delegate respondsToSelector:@selector(OrderListDownMenu:didSelectRowAtIndexPath:)]){ [self.delegate OrderListDownMenu:tableView didSelectRowAtIndexPath:indexPath]; }[tableView deselectRowAtIndexPath:indexPath animated:YES]; [self dismissWithCompletion:nil]; }- (void)dismissWithCompletion:(void (^)(OrderListDownMenu *object))completion {__weak __typeof(self) weakSelf = self; [UIView animateWithDuration:0.2 animations:^{ weakSelf.alpha = 0; weakSelf.tableView.frame = CGRectMake(weakSelf.origin.x + LeftToView + 145, weakSelf.origin.y + TopToView, 0, 0); } completion:^(BOOL finished) { [weakSelf removeFromSuperview]; if (completion) { completion(weakSelf); } if (weakSelf.dismiss) { weakSelf.dismiss(); } }]; }- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {UITouch *touch = [touches anyObject]; if (![touch.view isEqual:self.tableView]) { [self dismissWithCompletion:nil]; } }- (void)drawRect:(CGRect)rect {//[colors[serie] setFill];//拿到当前视图准备好的画板CGContextRef context = UIGraphicsGetCurrentContext();//利用path进行绘制三角形CGContextBeginPath(context);//标记CGContextMoveToPoint(context,rightToView - 13, 53);//设置起点CGContextAddLineToPoint(context, rightToView - 21, TopToView);CGContextAddLineToPoint(context, rightToView - 4, TopToView);CGContextClosePath(context);//路径结束标志,不写默认封闭 [self.tableView.backgroundColor setFill]; //设置填充色[self.tableView.backgroundColor setStroke]; //设置边框颜色CGContextDrawPath(context,kCGPathFillStroke);//绘制路径path }@end
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。