ios 下拉菜单Menu
2024-05-29 02:47:24
ios 下拉菜单Menu
看了很多的demo，看到思路大致相同。手动模仿写一个。
DropdownMenu.h
#import <UIKit/UIKit.h>@class DropdownMenu;@protocol LHDropdownMenuDelegate <NSObject>
@optional// 当选择某个选项时调用
- (void)dropdownMenu:(DropdownMenu *)menu didSelectOptionAtIndex:(NSUInteger)index optionTitle:(NSString *)title;
// 当下拉菜单将要显示时调用
- (void)dropdownMenuWillShow:(DropdownMenu *)menu;
// 当下拉菜单已经显示时调用
- (void)dropdownMenuDidShow:(DropdownMenu *)menu;
// 当下拉菜单将要收起时调用
- (void)dropdownMenuWillHidden:(DropdownMenu *)menu;
// 当下拉菜单已经收起时调用
- (void)dropdownMenuDidHidden:(DropdownMenu *)menu;@end@protocol DropdownMenuDataSource <NSObject>@required
/*list的内容代理*/
- (NSUInteger)numberOfOptionsInDropdownMenu:(DropdownMenu *)menu;- (CGFloat)dropdownMenu:(DropdownMenu *)menu heightForOptionAtIndex:(NSUInteger)index;- (NSString *)dropdownMenu:(DropdownMenu *)menu titleForOptionAtIndex:(NSUInteger)index;
@optional
- (UIImage *)dropdownMenu:(DropdownMenu *)menu iconForOptionAtIndex:(NSUInteger)index;
@end
@interface DropdownMenu : UIView<UITableViewDataSource,UITableViewDelegate>@property (nonatomic, weak) id <DropdownMenuDataSource> dataSource;
@property (nonatomic, weak) id <LHDropdownMenuDelegate> delegate;/*Menu标题*///标题
@property (nonatomic,copy) NSString * title;
//背景色
@property (nonatomic,strong) UIColor * titleBgColor;
//字体大小
@property (nonatomic,strong) UIFont * titleFont;
//字体颜色
@property (nonatomic,strong) UIColor * titleColor;
//文本的Alignment
@property (nonatomic) NSTextAlignment titleAlignment;@property (nonatomic) UIEdgeInsets titleEdgeInsets;
//图标
@property (nonatomic,strong) UIImage * rotateIcon;
//图标大小
@property (nonatomic,assign) CGSize rotateIconSize;
//
@property (nonatomic,assign) CGFloat rotateIconMarginRight; // default: 7.5
//图标的颜色
@property (nonatomic,strong) UIColor * rotateIconTint;/*-------list*/
//列表的颜色
@property (nonatomic,strong) UIColor * optionBgColor;
//列表文本的大小
@property (nonatomic,strong) UIFont * listOptionFont;
//列表文本的颜色
@property (nonatomic,strong) UIColor * listOptionTextColor;
//列表文本的Alignment
@property (nonatomic) NSTextAlignment listOptionTextAlignment;
//列表文本的每行显示
@property (nonatomic) NSInteger listOptionNumberOfLines;
//列表的图标 default:(15,15)
@property (nonatomic,assign) CGSize listOptionIconSize;
//列表图标右边距 default: 15
@property (nonatomic,assign) CGFloat listOptionIconMarginRight;
//列表分割线的显色 default: white
@property (nonatomic,strong) UIColor * listOptionLineColor;
//列表分割线导读 default: 0.5
@property (nonatomic,assign) CGFloat listOptionLineHeight;/*选项列表的最大高度。超出最大高度后，选项可滚动 （optionsListLimitHeight <= 0 时，下拉列表将显示所有选项）*/
@property (nonatomic,assign) CGFloat optionsListLimitHeight; // default: 0
@property (nonatomic,assign) BOOL showsVerticalScrollIndicatorOfOptionsList; // default: YES// 下拉动画时间 default: 0.25
@property (nonatomic,assign) CGFloat animateTime;- (void)reloadOptionsData;- (void)showDropDown; // 下拉菜单显示- (void)hideDropDown; // 下拉菜单隐藏@endDropdownMenu.m
#import "DropdownMenu.h"@interface DropdownMenu() <UIGestureRecognizerDelegate>@property (nonatomic, strong) UIButton *mainBtn; // 菜单按钮
@property (nonatomic, strong) UIImageView * arrowMark; // 尖头图标
@property (nonatomic, strong) UITableView *optionsList; // 下拉列表
@property (nonatomic, strong) UIView *floatView;
@property (nonatomic, strong) UIView *coverView;@end@implementation DropdownMenu{BOOL _isOpened;
}- (id)initWithFrame:(CGRect)frame{self = [super initWithFrame:frame];if (self) {[self initProperties];[self initViews];[self initFrame:self.frame];}return self;
}- (void)awakeFromNib {[super awakeFromNib];[self initProperties];[self initViews];[self initFrame:self.frame];
}- (void)layoutSubviews {if (_isOpened) return;CGFloat width = self.frame.size.width;CGFloat height = self.frame.size.height;[_floatView setFrame:CGRectMake(_floatView.frame.origin.x, _floatView.frame.origin.y, width, height)];[_mainBtn setFrame:CGRectMake(0, 0, width, height)];[_arrowMark setFrame:CGRectMake(width -self.rotateIconMarginRight -self.rotateIconSize.width, (height -self.rotateIconSize.height)/2, self.rotateIconSize.width, self.rotateIconSize.height)];[_optionsList setFrame:CGRectMake(0, height, width, _optionsList.frame.size.height)];
}#pragma mark - Init ，default默认
- (void)initProperties{_title = @"Please Select";_titleBgColor = [UIColor colorWithRed:64/255.f green:151/255.f blue:255/255.f alpha:1];_titleFont = [UIFont boldSystemFontOfSize:15];_titleColor = [UIColor whiteColor];_titleAlignment = NSTextAlignmentLeft;_titleEdgeInsets = UIEdgeInsetsMake(0, 10, 0, 10);_rotateIcon = nil;_rotateIconSize = CGSizeMake(15, 15);_rotateIconMarginRight = 7.5;_rotateIconTint = [UIColor blackColor];_optionBgColor = [UIColor colorWithRed:64/255.f green:151/255.f blue:255/255.f alpha:0.5];_listOptionFont = [UIFont systemFontOfSize:13];_listOptionTextColor = [UIColor blackColor];_listOptionTextAlignment = NSTextAlignmentCenter;_listOptionNumberOfLines = 0;_listOptionIconSize = CGSizeMake(0, 0);_listOptionIconMarginRight = 15;_listOptionLineColor = [UIColor whiteColor];_listOptionLineHeight = 0.5f;_animateTime = 0.25f;_optionsListLimitHeight = 0;_isOpened = NO;
}- (void)initViews{self.layer.masksToBounds = YES;_floatView = [[UIView alloc] initWithFrame:self.bounds];_floatView.layer.masksToBounds = YES;[self addSubview:_floatView];// 主按钮 显示在界面上的点击按钮_mainBtn = [UIButton buttonWithType:UIButtonTypeCustom];[_mainBtn addTarget:self action:@selector(clickMainBtn:) forControlEvents:UIControlEventTouchUpInside];_mainBtn.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;_mainBtn.titleEdgeInsets = UIEdgeInsetsMake(0, 15, 0, 0);_mainBtn.selected = NO;[_floatView addSubview:_mainBtn];// 旋转尖头_arrowMark = [[UIImageView alloc] init];[_arrowMark setTintColor:self.rotateIconTint];[_mainBtn addSubview:_arrowMark];// 下拉列表TableView_optionsList = [[UITableView alloc] init];_optionsList.delegate = self;_optionsList.dataSource = self;_optionsList.separatorStyle = UITableViewCellSeparatorStyleNone;_optionsList.scrollEnabled = NO;[_floatView addSubview:_optionsList];
}- (void)initFrame:(CGRect)frame {CGFloat width = frame.size.width;CGFloat height = frame.size.height;[_floatView setFrame:CGRectMake(0, 0, width, height)];[_mainBtn setFrame:CGRectMake(0, 0, width, height)];[_arrowMark setFrame:CGRectMake(width -self.rotateIconMarginRight -self.rotateIconSize.width, (height -self.rotateIconSize.height)/2, self.rotateIconSize.width, self.rotateIconSize.height)];[_optionsList setFrame:CGRectMake(0, height, width, _optionsList.frame.size.height)];
}#pragma mark - Action Methods
- (void)reloadOptionsData{[self.optionsList reloadData];
}
- (void)clickMainBtn:(UIButton *)button{if(button.selected == NO) {[self showDropDown];}else {[self hideDropDown];}
}- (void)showDropDown{ /* 显示下拉列表 */_isOpened = YES;// 变更menu图层CGPoint newPosition = [self getScreenPosition];_floatView.frame = CGRectMake(newPosition.x, newPosition.y, _floatView.bounds.size.width, _floatView.bounds.size.height);_floatView.layer.borderColor = self.layer.borderColor;_floatView.layer.borderWidth = self.layer.borderWidth;_floatView.layer.cornerRadius = self.layer.cornerRadius;[self.coverView addSubview:_floatView];// cell delegateif ([self.delegate respondsToSelector:@selector(dropdownMenuWillShow:)]) {[self.delegate dropdownMenuWillShow:self]; // 将要显示回调代理}// 刷新下拉列表数据[self reloadOptionsData];// 菜单高度计算CGFloat listHeight = 0;if (self.optionsListLimitHeight <= 0) { // 当未设置下拉菜单最小展示高度NSUInteger count = [self.dataSource numberOfOptionsInDropdownMenu:self];for (int i = 0; i < count; i++) {CGFloat cHeight = [self.dataSource dropdownMenu:self heightForOptionAtIndex:i];listHeight += cHeight;}_optionsList.scrollEnabled = NO;} else {listHeight = self.optionsListLimitHeight;_optionsList.scrollEnabled = YES;}// 执行展开动画__weak typeof(self) weakSelf = self;[UIView animateWithDuration:self.animateTime animations:^{UIView *floatView = weakSelf.floatView;UIButton *mainBtn = weakSelf.mainBtn;UITableView *listView = weakSelf.optionsList;floatView.frame = CGRectMake(floatView.frame.origin.x, floatView.frame.origin.y, floatView.frame.size.width, mainBtn.frame.size.height + listHeight);weakSelf.arrowMark.transform = CGAffineTransformMakeRotation(M_PI);listView.frame = CGRectMake(listView.frame.origin.x, listView.frame.origin.y, listView.frame.size.width, listHeight);}completion:^(BOOL finished) {if ([self.delegate respondsToSelector:@selector(dropdownMenuDidShow:)]) {[self.delegate dropdownMenuDidShow:self]; // 已经显示回调代理}}];_mainBtn.selected = YES;
}- (void)hideDropDown{ // 隐藏下拉列表// call delegateif ([self.delegate respondsToSelector:@selector(dropdownMenuWillHidden:)]) {[self.delegate dropdownMenuWillHidden:self]; // 将要隐藏回调代理}// 执行关闭动画__weak typeof(self) weakSelf = self;[UIView animateWithDuration:self.animateTime animations:^{UIView *floatView = weakSelf.floatView;UIButton *mainBtn = weakSelf.mainBtn;weakSelf.arrowMark.transform = CGAffineTransformIdentity;weakSelf.floatView.frame = CGRectMake(floatView.frame.origin.x, floatView.frame.origin.y, floatView.frame.size.width, mainBtn.frame.size.height);}completion:^(BOOL finished) {weakSelf.optionsList.frame = CGRectMake(weakSelf.optionsList.frame.origin.x, weakSelf.optionsList.frame.origin.y, weakSelf.frame.size.width, 0);// 变更menu图层weakSelf.floatView.frame = weakSelf.floatView.bounds;[self addSubview:weakSelf.floatView];[weakSelf.coverView removeFromSuperview];weakSelf.coverView = nil;self->_isOpened = NO;if ([self.delegate respondsToSelector:@selector(dropdownMenuDidHidden:)]) {[self.delegate dropdownMenuDidHidden:self]; // 已经隐藏回调代理}}];_mainBtn.selected = NO;
}#pragma mark - Utility Methods
- (CGPoint)getScreenPosition {return [self.superview convertPoint:self.frame.origin toView:[self getCurrentKeyWindow]];
}- (UIWindow *)getCurrentKeyWindow {return [UIApplication sharedApplication].keyWindow;
}#pragma mark - UITableView Delegate
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {return [self.dataSource numberOfOptionsInDropdownMenu:self];
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {return [self.dataSource dropdownMenu:self heightForOptionAtIndex:indexPath.row];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {static NSString *CellIdentifier = @"MenuOptionListCell";UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];if (cell == nil) {//---------------------------下拉选项样式，可在此处自定义-------------------------cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];cell.selectionStyle = UITableViewCellSelectionStyleNone;cell.backgroundColor = self.optionBgColor;UILabel * titleLabel = [[UILabel alloc] init];titleLabel.font = self.listOptionFont;titleLabel.textColor = self.listOptionTextColor;titleLabel.numberOfLines = self.listOptionNumberOfLines;titleLabel.textAlignment = self.listOptionTextAlignment;titleLabel.tag = 999;[cell addSubview:titleLabel];UIImageView * icon = [[UIImageView alloc] init];icon.tag = 888;[cell addSubview:icon];UIView * line = [[UIView alloc] initWithFrame:CGRectMake(0, 0, cell.frame.size.width, self.listOptionLineHeight)];line.backgroundColor = self.listOptionLineColor;line.tag = 777;[cell addSubview:line];}CGFloat cHeight = [self.dataSource dropdownMenu:self heightForOptionAtIndex:indexPath.row];UILabel * titleLabel = [cell viewWithTag:999];titleLabel.text = [self.dataSource dropdownMenu:self titleForOptionAtIndex:indexPath.row];;titleLabel.frame = CGRectMake(15, 0, self.frame.size.width - 15 -self.listOptionIconSize.width -self.listOptionIconMarginRight, cHeight);UIImageView * icon = [cell viewWithTag:888];if ([self.dataSource respondsToSelector:@selector(dropdownMenu:iconForOptionAtIndex:)]){icon.image = [self.dataSource dropdownMenu:self iconForOptionAtIndex:indexPath.row];}icon.frame = CGRectMake(self.frame.size.width -self.listOptionIconSize.width -self.listOptionIconMarginRight, (cHeight - self.listOptionIconSize.height)/2, self.listOptionIconSize.width, self.listOptionIconSize.height);UIView *line = [cell viewWithTag:777];line.frame = CGRectMake(0, 0, cell.frame.size.width, self.listOptionLineHeight);line.backgroundColor = self.listOptionLineColor;return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];UILabel * titleLabel = [cell viewWithTag:999];self.title = titleLabel.text;if ([self.delegate respondsToSelector:@selector(dropdownMenu:didSelectOptionAtIndex:optionTitle:)]) {[self.delegate dropdownMenu:self didSelectOptionAtIndex:indexPath.row optionTitle:titleLabel.text];}[self hideDropDown];
}#pragma mark - UIGestureRecognizerDelegate
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {if ([NSStringFromClass([touch.view class]) isEqualToString:@"UITableViewCellContentView"]) {return NO;}return YES;
}#pragma mark - Get Methods
- (BOOL)showsVerticalScrollIndicatorOfOptionsList {return _optionsList.showsVerticalScrollIndicator;
}- (UIView *)coverView {UIWindow *window = [self getCurrentKeyWindow];if (_coverView == nil) {_coverView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, window.bounds.size.width, window.bounds.size.height)];_coverView.backgroundColor = [UIColor clearColor];[window addSubview:_coverView];UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hideDropDown)];tap.delegate = self;[_coverView addGestureRecognizer:tap];}return _coverView;
}#pragma mark - Set Methods
- (void)setFrame:(CGRect)frame {[super setFrame:frame];[self initFrame:frame];
}- (void)setRotateIconSize:(CGSize)rotateIconSize {_rotateIconSize = rotateIconSize;[self.arrowMark setFrame:CGRectMake(self.mainBtn.bounds.size.width -self.rotateIconMarginRight -rotateIconSize.width, (self.mainBtn.bounds.size.height -rotateIconSize.height)/2, rotateIconSize.width, rotateIconSize.height)];
}- (void)setRotateIcon:(UIImage *)rotateIcon {_rotateIcon = rotateIcon;[self.arrowMark setImage:rotateIcon];
}- (void)setRotateIconMarginRight:(CGFloat)rotateIconMarginRight {_rotateIconMarginRight = rotateIconMarginRight;[self.arrowMark setFrame:CGRectMake(self.mainBtn.bounds.size.width -rotateIconMarginRight -self.rotateIconSize.width, (self.mainBtn.bounds.size.height -self.rotateIconSize.height)/2, self.rotateIconSize.width, self.rotateIconSize.height)];
}
- (void)setRotateIconTint:(UIColor *)rotateIconTint {_rotateIconTint = rotateIconTint;self.arrowMark.tintColor = rotateIconTint;
}- (void)setTitle:(NSString *)title{_title = title;[self.mainBtn setTitle:title forState:UIControlStateNormal];
}
- (void)setTitleBgColor:(UIColor *)titleBgColor{_titleBgColor = titleBgColor;[self.mainBtn setBackgroundColor:titleBgColor];[self.arrowMark setBackgroundColor:titleBgColor];
}
- (void)setTitleFont:(UIFont *)titleFont{_titleFont = titleFont;self.mainBtn.titleLabel.font = titleFont;
}
- (void)setTitleColor:(UIColor *)titleColor{_titleColor = titleColor;[self.mainBtn setTitleColor:titleColor forState:UIControlStateNormal];
}
- (void)setTitleAlignment:(NSTextAlignment)titleAlignment{_titleAlignment = titleAlignment;if (titleAlignment == NSTextAlignmentLeft) {self.mainBtn.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;} else if (titleAlignment == NSTextAlignmentCenter) {self.mainBtn.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;} else if (titleAlignment == NSTextAlignmentRight) {self.mainBtn.contentHorizontalAlignment = UIControlContentHorizontalAlignmentRight;}
}- (void)setShowsVerticalScrollIndicatorOfOptionsList:(BOOL)showsVerticalScrollIndicatorOfOptionsList {_optionsList.showsVerticalScrollIndicator = showsVerticalScrollIndicatorOfOptionsList;
}- (void)setTitleEdgeInsets:(UIEdgeInsets)titleEdgeInsets{_titleEdgeInsets = titleEdgeInsets;self.mainBtn.titleEdgeInsets = titleEdgeInsets;
}/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {// Drawing code
}
*/@end在需要的文件里添加并遵循代理<DropdownMenuDataSource,LHDropdownMenuDelegate>
/*创建菜单数组及设置
*/
- (void)viewDidLoad
{_menu1OptionTitles = @[@"Option1",@"Option2",@"Option3",@"Option4",@"Option5"];menu1 = [[DropdownMenu alloc] init];[menu1 setFrame:CGRectMake(20, 120, 100, 30)];menu1.dataSource = self;menu1.delegate = self;menu1.title = @"Please";menu1.titleBgColor = [UIColor colorWithRed:64/255.f green:151/255.f blue:255/255.f alpha:1];[self.view addSubview:menu1];}#pragma mark - DropdownMenu DataSource
- (NSUInteger)numberOfOptionsInDropdownMenu:(DropdownMenu *)menu{return _menu1OptionTitles.count;}
- (CGFloat)dropdownMenu:(DropdownMenu *)menu heightForOptionAtIndex:(NSUInteger)index{return 30;}
- (NSString *)dropdownMenu:(DropdownMenu *)menu titleForOptionAtIndex:(NSUInteger)index{return _menu1OptionTitles[index];}
- (UIImage *)dropdownMenu:(DropdownMenu *)menu iconForOptionAtIndex:(NSUInteger)index{return [UIImage imageNamed:_menu1OptionTitles[index]];}#pragma mark - LMJDropdownMenu Delegate
- (void)dropdownMenu:(DropdownMenu *)menu didSelectOptionAtIndex:(NSUInteger)index optionTitle:(NSString *)title{NSLog(@"你选择了(you selected)：menu1，index: %ld - title: %@", index, title);}- (void)dropdownMenuWillShow:(DropdownMenu *)menu{NSLog(@"--将要显示");}
- (void)dropdownMenuDidShow:(DropdownMenu *)menu{NSLog(@"--已经显示");}- (void)dropdownMenuWillHidden:(DropdownMenu *)menu{NSLog(@"--将要隐藏");}
- (void)dropdownMenuDidHidden:(DropdownMenu *)menu{NSLog(@"--已经隐藏");}ios 下拉菜单Menu相关推荐
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