一个列表选择型textfield控件，只需设置控件位置并添加到所在视图即可，用法相当简单示例代码如下：在要用到类的.m文件里倒入DropDown.h文件，并创建控件全局属性，在合适方法中把控件添加到控件需要在的图层即可。

用法：

- (void)viewDidLoad{   

[super viewDidLoad];   

   _dropDown = [[DropDown alloc]initWithFrame:CGRectMake(80, self.view.bounds.size.height*0.5-70,KScreenWidth-160, KScreenHeight- 200)]; 

  NSArray *ar = @[@"1000",@"2000",@"3000",@"4000",@"5000",@"10000",@"20000",@"30000"];   

_dropDown.tableArray = ar;   

[self.view addSubview:_dropDown];  

}

- (void)touchesBegan:(NSSet*)touches withEvent:(UIEvent *)event {

[_dropDown resignFirstResponder];

}

DropDown控件的.h和.m文件 ------“直接粘贴即可”

DropDown.h文件

#import<UIKit/UIKit.h>

@interface DropDown:UIView<UITableViewDelegate,UITableViewDataSource,UITextFieldDelegate>

{

UITableView *tv;//下拉列表

NSArray *tableArray;//下拉列表数据

UITextField *textField;//文本输入框

BOOL showList;//是否弹出下拉列表

CGFloat tabheight;//table下拉列表的高度

CGFloat frameHeight;//frame的高度

}

@property (nonatomic,retain) UITableView *tv;

@property (nonatomic,retain) NSArray *tableArray;

@property (strong, nonatomic) NSDictionary *pickerDic;//获取文件里的字典

@property (strong, nonatomic) NSArray *provinceArray;//省、市

@property (nonatomic,retain) UITextField *textField;

@property (assign, nonatomic) BOOL showList;

-(void)dontshowlist;

@end

DropDown.m文件

#import "DropDown.h"

@implementation DropDown

@synthesize tv,tableArray,textField,showList;

---

-(id)initWithFrame:(CGRect)frame

{

if (frame.size.height<300) {

frameHeight =300;

}else{

frameHeight = frame.size.height;

}

tabheight = frameHeight-30;

frame.size.height = 30.0f;

self=[super initWithFrame:frame];

if(self){

showList = NO; //默认不显示下拉框

tv = [[UITableView alloc] initWithFrame:CGRectMake(0, 30, frame.size.width,300)];

tv.delegate = self;

tv.dataSource = self;

tv.separatorColor = [UIColor lightGrayColor];

tv.hidden = YES;

tv.contentOffset =CGPointMake(0, 64);

[self addSubview:tv];

textField = [[UITextField alloc] initWithFrame:CGRectMake(0, 0, frame.size.width, 30)];

textField.borderStyle=UITextBorderStyleRoundedRect;//设置文本框的边框风格

[textField addTarget:self action:@selector(dropdown) forControlEvents:UIControlEventAllTouchEvents];

textField.font = [UIFont systemFontOfSize:16];

textField.placeholder = @"请选择(长按)";

//设置textfield 不弹出键盘

textField.inputView=[[UIView alloc]initWithFrame:CGRectZero];

textField.backgroundColor = [UIColor colorWithRed:204/255.0 green:204/255.0 blue:204/255.0 alpha:1];

[self addSubview:textField];

NSString *path = [[NSBundle mainBundle] pathForResource:@"Address" ofType:@"plist"];

self.pickerDic = [[NSDictionary alloc] initWithContentsOfFile:path];

//省  市

self.provinceArray = [self.pickerDic allKeys];

tableArray = self.provinceArray;

}

return self;

}

//不展示列表

---

-(void)dontshowlist

{

showList = NO;

tv.hidden = YES;

CGRect sf = self.frame;

sf.size.height = 30;

self.frame = sf;

CGRect frame = tv.frame;

frame.size.height = 0;

tv.frame = frame;

}

---

-(void)dropdown

{

//    [tv reloadData];

[textField resignFirstResponder];

if (showList) {//如果下拉框已显示，什么都不做

[textField resignFirstResponder];

return;

}else {//如果下拉框尚未显示，则进行显示

[textField resignFirstResponder];

CGRect sf = self.frame;

sf.size.height = frameHeight;

//把dropdownList放到前面，防止下拉框被别的控件遮住

[self.superview bringSubviewToFront:self];

tv.hidden = NO;

showList = YES;//显示下拉框

tv.tableHeaderView.backgroundColor = [UIColor blackColor];

CGRect frame = tv.frame;

frame.size.height = 0;

tv.frame = frame;

frame.size.height = tabheight;

[UIView beginAnimations:@"ResizeForKeyBoard" context:nil];

[UIView setAnimationCurve:UIViewAnimationCurveLinear];

self.frame = sf;

tv.frame = frame;

[UIView commitAnimations];

}

}

---

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{

return [tableArray count];

}

---

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

static NSString *CellIdentifier = @"Cell";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

if (cell == nil) {

cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] ;

}

//cell.backgroundColor = [UIColor grayColor];

cell.textLabel.text = [tableArray objectAtIndex:[indexPath row]];

cell.textAlignment = UITextAlignmentCenter;

cell.textLabel.font = [UIFont systemFontOfSize:16.0f];

cell.accessoryType = UITableViewCellAccessoryNone;

cell.selectionStyle = UITableViewCellSelectionStyleGray;

return cell;

}

---

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath

{

return 35;

}

---

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

textField.text = [tableArray objectAtIndex:[indexPath row]];

showList = NO;

tv.hidden = YES;

CGRect sf = self.frame;

sf.size.height = 30;

self.frame = sf;

CGRect frame = tv.frame;

frame.size.height = 0;

tv.frame = frame;

NSString *string = [NSString stringWithFormat:@"%ld",(long)[indexPath row]];

NSDictionary *dict =[[NSDictionary alloc] initWithObjectsAndKeys:string,@"textOne",nil];

//创建通知

NSNotification *notification =[NSNotification notificationWithName:@"tongzhi" object:nil userInfo:dict];

//通过通知中心发送通知

[[NSNotificationCenter defaultCenter] postNotification:notification];

}

---

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

// Return YES for supported orientations

return (interfaceOrientation == UIInterfaceOrientationPortrait);

}

@end