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已经封装好
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导入这个文件就可以使用
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.h文件
#import <UIKit/UIKit.h>
//需自定义按钮请修改此类
@interface WMMenuButton : UIButton
@end
//需自定义数据模型请更改此类
@interface chdModel : NSObject
@property (nonatomic,copy) NSString *text;
@property BOOL isSub;
@property BOOL isSelect;
@end
//需自定义下拉cell请更改此类
@interface chdMenuCell : UITableViewCell
@property (nonatomic,retain) UIView *bgView;
@property (nonatomic,retain) UIView *point;
@property (nonatomic,retain) UILabel *textL;
@end
@protocol chdMenuDelegate <NSObject>
- (void)selectColum:(NSInteger)colum Row:(NSInteger)row Model:(chdModel*)model;
@end
@interface WMMenu : UIView<UITableViewDataSource,UITableViewDelegate>
- (void)initWithFrame:(CGRect)frame showOnView:(UIView*)view AllDataArr:(NSMutableArray*)arr showArr:(NSMutableArray *)showArr;
//使某列某行被选中,默认均选中第0行。 可调用此方法更改默认。
- (void)selectClum:(NSInteger)colum Row:(NSInteger)row;
@property (nonatomic,retain) NSMutableArray *AllDataArr;
@property (nonatomic,retain) NSMutableArray *showArr;
@property (nonatomic,weak) __weak id<chdMenuDelegate>delegate;
@end
- .m文件
#import "WMMenu.h"
#import "UIView+WMExtension.h"
#define CHD_SCREEN_WIDTH ([[UIScreen mainScreen] bounds].size.width)
#define CHD_SCREEN_HEIGHT ([[UIScreen mainScreen] bounds].size.height)
static const CGFloat cellHeight = 40.0f;
@implementation WMMenuButton
- (CGRect)imageRectForContentRect:(CGRect)contentRect
{
return CGRectMake(CGRectGetWidth(contentRect) - 20,(CGRectGetHeight(contentRect) - 7)/2, 12, 7);
}
- (CGRect)titleRectForContentRect:(CGRect)contentRect
{
return CGRectMake(0, 0, CGRectGetWidth(contentRect) - 15, CGRectGetHeight(contentRect));
}
@end
@implementation chdModel
@end
@implementation chdMenuCell
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
if ([super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
self.bgView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, CHD_SCREEN_WIDTH, cellHeight)];
[self.contentView addSubview:_bgView];
self.point = [[UIView alloc] initWithFrame:CGRectMake(10, (cellHeight - 3)/2.0, 3, 3)];
self.point.layer.masksToBounds = YES;
self.point.layer.cornerRadius = 1.5;
[self.bgView addSubview:_point];
self.textL = [[UILabel alloc] initWithFrame:CGRectMake(CGRectGetMaxX(_point.frame)+5, 0,300, cellHeight)];
self.textL.font = [UIFont systemFontOfSize:12.0f];
[self.bgView addSubview:_textL];
}
return self;
}
@end
@implementation WMMenu
{
UITableView *ChdTable;
NSInteger currentSelect;
CGRect orginalFrame;
BOOL isShow;
UIView *bgView;
}
- (void)initWithFrame:(CGRect)frame showOnView:(UIView*)view AllDataArr:(NSMutableArray*)arr showArr:(NSMutableArray *)showArr
{
if ([super initWithFrame:frame]) {
self.AllDataArr = arr;
self.showArr = showArr;
if (!showArr) {
self.showArr = arr;
}
for (int i=0; i<arr.count; i++) {
WMMenuButton *button = [[WMMenuButton alloc] initWithFrame:CGRectMake(i*(CGRectGetWidth(frame)/arr.count), 0, CGRectGetWidth(frame)/arr.count, CGRectGetHeight(frame))];
button.tag = 100 + i;
[button addTarget:self action:@selector(buttonClick:) forControlEvents:UIControlEventTouchUpInside];
NSArray *temp = self.showArr[i];
chdModel *model = [temp firstObject];
[button setTitle:model.text forState:UIControlStateNormal];
button.titleLabel.textAlignment = NSTextAlignmentCenter;
button.backgroundColor = [UIColor whiteColor];
button.layer.borderColor = [UIColor grayColor].CGColor;
button.layer.borderWidth = 0.4;
// 设置箭头图片
[button setImage:[UIImage imageNamed:@"up1"] forState:UIControlStateNormal];
button.imageView.transform = CGAffineTransformMakeRotation(M_PI);
[button setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
[self addSubview:button];
[view addSubview:self];
//
currentSelect = 0;
[self selectClum:i Row:0];
}
ChdTable = [[UITableView alloc] initWithFrame:CGRectMake(0, CGRectGetHeight(self.frame), CHD_SCREEN_WIDTH, CHD_SCREEN_HEIGHT - CGRectGetMaxY(self.frame))];
orginalFrame = CGRectMake(0, CGRectGetMaxY(frame), CHD_SCREEN_WIDTH, 0);
ChdTable.delegate = self;
ChdTable.dataSource = self;
ChdTable.hidden = YES;
//ChdTable.backgroundColor = [UIColor redColor];
bgView = [[UIView alloc] initWithFrame:orginalFrame];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] init];
[tap addTarget:self action:@selector(bgViewClick:)];
[bgView addGestureRecognizer:tap];
bgView.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.3];
[view addSubview:bgView];
if ([ ChdTable respondsToSelector:@selector(setSeparatorInset:)]) {
[ChdTable setSeparatorInset:UIEdgeInsetsMake(0, 0, 0, 0)];
}
if ([ChdTable respondsToSelector:@selector(setLayoutMargins:)]) {
[ChdTable setLayoutMargins:UIEdgeInsetsMake(0, 0, 0, 0)];
}
[view addSubview:ChdTable];
self.backgroundColor = [UIColor orangeColor];
}
}
- (void)bgViewClick:(UITapGestureRecognizer*)tap
{
[self hideCurrent];
bgView.frame = orginalFrame;
}
- (void)selectClum:(NSInteger)colum Row:(NSInteger)row
{
//默认选中第一个
NSArray *temp = self.AllDataArr[colum];
for (int i=0; i<temp.count; i++) {
chdModel *model = temp[i];
if (i == row) {
model.isSelect = YES;
}else{
model.isSelect = NO;
}
}
//[ChdTable reloadData];
NSArray *arr = self.subviews;
WMMenuButton *btn = (WMMenuButton*)arr[colum];
chdModel *model = self.showArr[colum][row];
[btn setTitle:model.text forState:UIControlStateNormal];
}
- (void)buttonClick:(WMMenuButton*)button
{
if (button.tag - 100 == currentSelect) {
if (isShow) {
[self hideCurrent];
}else{
[self showIndex:button.tag - 100];
}
isShow = !isShow;
}else{
[self showIndex:button.tag - 100];
isShow = YES;
}
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [_AllDataArr[currentSelect] count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *chdResuseID = @"CHD_RESUSE";
chdMenuCell *cell = [tableView dequeueReusableCellWithIdentifier:chdResuseID];
if (cell == nil) {
cell = [[chdMenuCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:chdResuseID];
}
chdModel * model = [_AllDataArr[currentSelect] objectAtIndex:indexPath.row];
cell.textL.text = model.text;
if (model.isSub) {
cell.bgView.wm_x = 25;
}else{
cell.bgView.wm_x = 0;
}
if (model.isSelect) {
cell.textL.textColor = [UIColor blueColor];
}else{
cell.textL.textColor = [UIColor blackColor];
}
return cell;
}
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
if ([cell respondsToSelector:@selector(setSeparatorInset:)]) {
[cell setSeparatorInset:UIEdgeInsetsZero];
}
if ([cell respondsToSelector:@selector(setLayoutMargins:)]) {
[cell setLayoutMargins:UIEdgeInsetsZero];
}
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return cellHeight;
}
- (void)showIndex:(NSInteger)index
{
if (currentSelect != index) {
WMMenuButton *btn = self.subviews[currentSelect];
[UIView animateWithDuration:0.2 animations:^{
btn.imageView.transform = CGAffineTransformMakeRotation(M_PI);
}];
}
currentSelect = index;
[self realShow];
}
- (void)realShow
{
ChdTable.hidden = YES;
ChdTable.wm_height = cellHeight * [_AllDataArr[currentSelect] count];
[ChdTable reloadData];
bgView.wm_height = CHD_SCREEN_HEIGHT - CGRectGetMaxY(self.frame);
ChdTable.frame = orginalFrame;
ChdTable.hidden = NO;
WMMenuButton *btn = self.subviews[currentSelect];
[UIView animateWithDuration:0.2 animations:^{
if (cellHeight * [_AllDataArr[currentSelect] count]>CHD_SCREEN_HEIGHT-CGRectGetMaxY(self.frame)) {
ChdTable.wm_height = CHD_SCREEN_HEIGHT - CGRectGetMaxY(self.frame);
}else{
ChdTable.wm_height = cellHeight * [_AllDataArr[currentSelect] count];
}
btn.imageView.transform = CGAffineTransformMakeRotation(0);
}];
}
- (void)hideCurrent
{
WMMenuButton *btn = self.subviews[currentSelect];
[UIView animateWithDuration:0.2 animations:^{
ChdTable.frame = orginalFrame;
btn.imageView.transform = CGAffineTransformMakeRotation(M_PI);
}];
bgView.frame = orginalFrame;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
//************* 本段代码用于选择相同选项时不在回调，不需要可注掉 ****************
chdModel *modelLast = self.AllDataArr[currentSelect][indexPath.row];
if (modelLast.isSelect) {
[self hideCurrent];
isShow = NO;
return;
}
//************* 本段代码用于选择相同选项时不在回调，不需要可注掉 ****************
[self selectClum:currentSelect Row:indexPath.row];
[self hideCurrent];
isShow = NO;
chdModel *model = self.AllDataArr[currentSelect][indexPath.row];
if ([self.delegate respondsToSelector:@selector(selectClum:Row:)]) {
[self.delegate selectColum:currentSelect Row:indexPath.row Model:model];
}
NSLog(@"%@",model.text);
}
@end
- 使用实例
#import "ViewController.h"
#import "WMMenu.h"
#define CHD_SCREEN_WIDTH ([[UIScreen mainScreen] bounds].size.width)
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//列表展示的模型
NSMutableArray *arr = [NSMutableArray array];
for (int i =0; i<3; i++) {// 3 列
NSMutableArray *temp = [NSMutableArray array];//
NSInteger row = (i+1)*3;// 3 6 9 行
for (int j =0; j<row; j++) { //
chdModel *model = [[chdModel alloc] init];
model.text = [NSString stringWithFormat:@"第%@列---第%@行",@(i),@(j)];
if (( i == 2 && j >= 2 && j < 4) || ( i == 2 && j == 7)) {
model.isSub = YES;
}
[temp addObject:model];// ==组的row
}
[arr addObject:temp]; // == 组
}
//上边按钮展示的模型,此模型对text赋值即可.
NSMutableArray *ShowArr = [NSMutableArray array];
for (int i =0; i<3; i++) { // 3列
NSMutableArray *temp = [NSMutableArray array];
NSInteger row = (i+1)*3;
for (int j =0; j<row; j++) {
chdModel *model = [[chdModel alloc] init];
model.text = [NSString stringWithFormat:@"%@-%@",@(i),@(j)];
[temp addObject:model];
}
[ShowArr addObject:temp];
}
[[WMMenu alloc] initWithFrame:CGRectMake(0, 40,CHD_SCREEN_WIDTH, 40) showOnView:self.view AllDataArr:arr showArr:ShowArr];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
效果图
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