iOS下拉选择菜单简单封装
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> @protocolOrderListDownMenuDelegate<NSObject> -(void)OrderListDownMenu:(UITableView*)tableViewdidSelectRowAtIndexPath:(NSIndexPath*)indexPath; @end typedefvoid(^Dismiss)(void); @interfaceOrderListDownMenu: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)Dismissdismiss; -(instancetype)initWithDataArr:(NSArray*)dataArrorigin:(CGPoint)originwidth:(CGFloat)widthrowHeight:(CGFloat)rowHeight; -(void)dismissWithCompletion:(void(^)(OrderListDownMenu*object))completion; @end
#import"OrderListDownMenu.h"
#defineTopToView63.0f
#definerightToViewkScreenWidth-15.0f
#defineLeftToViewkScreenWidth-145.0-10.0f
#defineCellLineEdgeInsetsUIEdgeInsetsMake(0,-80,0,0)
#definekScreenWidth[UIScreenmainScreen].bounds.size.width
#definekScreenHeight[UIScreenmainScreen].bounds.size.height
@interfaceOrderListDownMenu()
@property(nonatomic,assign)CGPointorigin;
@property(nonatomic,assign)CGFloatrowHeight;
@end
@implementationOrderListDownMenu
-(instancetype)initWithDataArr:(NSArray*)dataArrorigin:(CGPoint)originwidth:(CGFloat)widthrowHeight:(CGFloat)rowHeight{
self=[superinitWithFrame:CGRectMake(0,0,kScreenWidth,kScreenHeight)];
if(self){
if(rowHeight<=0){
rowHeight=50;
}
//设置背景颜色
self.backgroundColor=[UIColorcolorWithRed:0green:0blue:0alpha:0.2];
self.origin=origin;
self.rowHeight=rowHeight;
self.arrData=[dataArrcopy];
self.tableView=[[UITableViewalloc]initWithFrame:CGRectMake(origin.x+LeftToView,origin.y+TopToView,width,rowHeight*dataArr.count)style:UITableViewStylePlain];
_tableView.dataSource=self;
_tableView.delegate=self;
[selfaddSubview:_tableView];
_tableView.backgroundColor=[UIColorwhiteColor];
_tableView.layer.cornerRadius=2;
_tableView.bounces=NO;
_tableView.layer.cornerRadius=8;
_tableView.separatorColor=[UIColorcolorWithWhite:0.3alpha:1];
_tableView.separatorStyle=UITableViewCellSelectionStyleNone;
[_tableViewregisterClass:[UITableViewCellclass]forCellReuseIdentifier:@"cell"];
if([self.tableViewrespondsToSelector:@selector(setSeparatorInset:)]){
[self.tableViewsetSeparatorInset:CellLineEdgeInsets];
}
if([self.tableViewrespondsToSelector:@selector(setLayoutMargins:)]){
[self.tableViewsetLayoutMargins:CellLineEdgeInsets];
}
}
returnself;
}
-(void)layoutSubviews{
[superlayoutSubviews];
}
-(NSInteger)tableView:(UITableView*)tableViewnumberOfRowsInSection:(NSInteger)section{
returnself.arrData.count;
}
-(CGFloat)tableView:(UITableView*)tableViewheightForRowAtIndexPath:(NSIndexPath*)indexPath{
returnself.rowHeight;
}
-(UITableViewCell*)tableView:(UITableView*)tableViewcellForRowAtIndexPath:(NSIndexPath*)indexPath{
UITableViewCell*cell=[tableViewdequeueReusableCellWithIdentifier:@"cell"];
cell.textLabel.textColor=THEME_COLOR_GRAY_1;
cell.textLabel.font=[UIFontsystemFontOfSize:15];
cell.textLabel.text=self.arrData[indexPath.row];
if(self.arrImgName.count>indexPath.row){
cell.imageView.image=[UIImageimageNamed:self.arrImgName[indexPath.row]];
cell.imageView.contentMode=UIViewContentModeScaleAspectFit;
}
UILabel*label=[[UILabelalloc]init];
label.frame=CGRectMake(0,49,_tableView.frame.size.width,0.5);
label.backgroundColor=THEME_SEPARATOR_COLOR;
[cell.contentViewaddSubview:label];
returncell;
}
-(void)tableView:(UITableView*)tableViewdidSelectRowAtIndexPath:(NSIndexPath*)indexPath{
if([self.delegaterespondsToSelector:@selector(OrderListDownMenu:didSelectRowAtIndexPath:)]){
[self.delegateOrderListDownMenu:tableViewdidSelectRowAtIndexPath:indexPath];
}
[tableViewdeselectRowAtIndexPath:indexPathanimated:YES];
[selfdismissWithCompletion:nil];
}
-(void)dismissWithCompletion:(void(^)(OrderListDownMenu*object))completion{
__weak__typeof(self)weakSelf=self;
[UIViewanimateWithDuration:0.2animations:^{
weakSelf.alpha=0;
weakSelf.tableView.frame=CGRectMake(weakSelf.origin.x+LeftToView+145,weakSelf.origin.y+TopToView,0,0);
}completion:^(BOOLfinished){
[weakSelfremoveFromSuperview];
if(completion){
completion(weakSelf);
}
if(weakSelf.dismiss){
weakSelf.dismiss();
}
}];
}
-(void)touchesBegan:(NSSet<UITouch*>*)toucheswithEvent:(UIEvent*)event{
UITouch*touch=[touchesanyObject];
if(![touch.viewisEqual:self.tableView]){
[selfdismissWithCompletion:nil];
}
}
-(void)drawRect:(CGRect)rect{
//[colors[serie]setFill];
//拿到当前视图准备好的画板
CGContextRefcontext=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.backgroundColorsetFill];//设置填充色
[self.tableView.backgroundColorsetStroke];//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毛票票。