单击UITextField时显示UIPickerView
我有一个屏幕上有很多文本字段。 对于一个特定的文本字段，我需要它显示一个select器，用户可以从中select状态名称，一旦用户通过点击状态名称select状态，select器应该消失。
我不太清楚如何做到这一点，我做了这个Nib文件。
这是我的头文件：
#import <UIKit/UIKit.h> #import "APIHelper.h" @interface AddNewAddressViewController : UIViewController <UIPickerViewDelegate, UIPickerViewDataSource, UITextFieldDelegate> { APIHelper *myAPIHelper; NSMutableData *responseData; NSURLConnection *theConnection; UIPickerView *picker; NSArray *stateNames; @public IBOutlet UIImageView *imageNewAddressBox; @public IBOutlet UIImageView *imageNewAddressBox1; @public IBOutlet UIImageView *imageNewAddressBox2; @public IBOutlet UIImageView *imageNewAddressBox3; @public IBOutlet UILabel *labelNewAddress; @public IBOutlet UILabel *labelStreetAddress; @public IBOutlet UILabel *labelStreetAddressTwo; @public IBOutlet UILabel *labelZipCode; @public IBOutlet UILabel *labelState; @public IBOutlet UILabel *labelCity; @public IBOutlet UILabel *labelPhoneNumber; @public IBOutlet UITextField *textFieldFullName; @public IBOutlet UITextField *textFieldStreetAddress; @public IBOutlet UITextField *textFieldPhoneNumber; @public IBOutlet UITextField *textFieldStreetAddressTwo; @public IBOutlet UITextField *textFieldCity; @public IBOutlet UITextField *textFieldState; @public IBOutlet UITextField *textFieldZipCode; @public IBOutlet UIButton *buttonNext; } @property (nonatomic, strong) IBOutlet UIPickerView *picker; @property (nonatomic, strong) NSArray *stateNames; @property (nonatomic, strong) IBOutlet UIImageView *imageNewAddressBox; @property (nonatomic, strong) IBOutlet UIImageView *imageNewAddressBox1; @property (nonatomic, strong) IBOutlet UIImageView *imageNewAddressBox2; @property (nonatomic, strong) IBOutlet UIImageView *imageNewAddressBox3; @property (nonatomic, strong) IBOutlet UILabel *labelNewAddress; @property (nonatomic, strong) IBOutlet UILabel *labelStreetAddress; @property (nonatomic, strong) IBOutlet UILabel *labelStreetAddressTwo; @property (nonatomic, strong) IBOutlet UILabel *labelZipCode; @property (nonatomic, strong) IBOutlet UILabel *labelState; @property (nonatomic, strong) IBOutlet UILabel *labelCity; @property (nonatomic, strong) IBOutlet UILabel *labelPhoneNumber; @property (nonatomic, strong) IBOutlet UITextField *textFieldFullName; @property (nonatomic, strong) IBOutlet UITextField *textFieldStreetAddress; @property (nonatomic, strong) IBOutlet UITextField *textFieldPhoneNumber; @property (nonatomic, strong) IBOutlet UITextField *textFieldStreetAddressTwo; @property (nonatomic, strong) IBOutlet UITextField *textFieldCity; @property (nonatomic, strong) IBOutlet UITextField *textFieldState; @property (nonatomic, strong) IBOutlet UITextField *textFieldZipCode; @property (nonatomic, strong) IBOutlet UIButton *buttonNext; -(IBAction)addressTextFieldShouldReturn:(id)sender; -(IBAction)nextPressed; @end 这里是我的.M文件：
#import "AddNewAddressViewController.h" @implementation AddNewAddressViewController @synthesize imageNewAddressBox; @synthesize imageNewAddressBox1; @synthesize imageNewAddressBox2; @synthesize imageNewAddressBox3; @synthesize labelNewAddress; @synthesize labelStreetAddress; @synthesize labelStreetAddressTwo; @synthesize labelZipCode; @synthesize labelState; @synthesize labelCity; @synthesize labelPhoneNumber; @synthesize textFieldFullName; @synthesize textFieldStreetAddress; @synthesize textFieldPhoneNumber; @synthesize textFieldStreetAddressTwo; @synthesize textFieldCity; @synthesize textFieldState; @synthesize textFieldZipCode; @synthesize buttonNext; @synthesize stateNames; @synthesize picker; - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; if (self) { // Custom initialization } return self; } - (void)viewDidLoad { self.stateNames = [[NSArray alloc] initWithObjects:@"Alabama", @"Alaska", @"Arizona", @"Arkansas", @"California", @"Colorado", @"Connecticut", @"Delaware", @"District of Columbia", @"Florida", @"Georgia", @"Guam", @"Hawaii", @"Idaho", @"Illinois", @"Indiana", @"Iowa", @"Kansas", @"Kentucky", @"Louisiana", @"Maine", @"Maryland", @"Massachusetts", @"Michigan", @"Minnesota", @"Mississippi", @"Missouri", @"Montana", @"Nebraska", @"Nevada", @"New Hampshire", @"New Jersey", @"New Mexico", @"New York", @"North Carolina", @"North Dakota", @"Ohio", @"Oklahoma", @"Oregon", @"Pennsylvania", @"Puerto Rico", @"Rhode Island", @"South Carolina", @"South Dakota", @"Tennessee", @"Texas", @"Utah", @"Vermont", @"Virginia", @"Virgin Islands", @"Washington", @"West Virginia", @"Wisconsin", @"Wyoming", nil]; [super viewDidLoad]; // Do any additional setup after loading the view from its nib. // clicking outside the textfields removes keyboard UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(addressTextFieldShouldReturn:)]; [self.view addGestureRecognizer:tap]; } - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; [self setTitle: @"Update Address Book"]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (void)viewDidUnload { [super viewDidUnload]; } -(IBAction)addressTextFieldShouldReturn:(id)sender { [textFieldFullName resignFirstResponder]; [textFieldStreetAddress resignFirstResponder]; [textFieldStreetAddressTwo resignFirstResponder]; [textFieldPhoneNumber resignFirstResponder]; [textFieldState resignFirstResponder]; [textFieldCity resignFirstResponder]; [textFieldZipCode resignFirstResponder]; [sender resignFirstResponder]; } #pragma mark - #pragma mark PickerView DataSource - (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView { return 1; } - (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component { return [stateNames count]; } - (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent: (NSInteger)component { return [stateNames objectAtIndex:row]; } @end
所以，我想要的是，当用户点击textFieldState时，从底部popup一个包含所有状态名称的select器，然后用户单击状态名称，该名称出现在textFieldState中。
任何帮助将不胜感激。 谢谢。
你可以使用TextFielđelegate，工作
#pragma mark- text delegate -(void)textFieldDidBeginEditing:(UITextField *)textField{ if (textField==txtMonth) { [txtMonth resignFirstResponder]; if (monthClick==0) { monthPicker.hidden=NO; monthPicker = [[AFPickerView alloc] initWithFrame:CGRectMake(98.0, 123.0, 126.0, 197.0)]; monthPicker.dataSource = self; monthPicker.delegate = self; [monthPicker reloadData]; if ([txtMonth.text isEqualToString:@""]) { txtMonth.text=[NSString stringWithFormat:@"%i",1]; } [self.view addSubview:monthPicker]; monthClick=1; } }
}
我认为你需要为UITextField实现委托方法
- (void)textFieldDidBeginEditing:(UITextField *)textField
方法被称为你设置uipicker的框架并显示它。