IOS的PickView作为TextField事件

最新推荐文章于 2024-04-07 09:32:10 发布

原创最新推荐文章于 2024-04-07 09:32:10 发布 · 1.2k 阅读

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#ios #uitextfield

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本文介绍如何在iOS应用中集成UITextField与UIPickerView，实现一个简单的选择输入框功能。通过设置代理方法和数据源，使用户能够在UITextField中通过UIPickerView选择预设选项。

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#import "ViewController.h"

@interface ViewController () <UITextFieldDelegate,UIPickerViewDataSource,UIPickerViewDelegate>
@property (weak, nonatomic) IBOutlet UITextField *myTextField;

@property (strong,nonatomic) UIPickerView *myPickerView;
@property (strong,nonatomic) UIToolbar *myToolBar;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    self.myPickerView=[[UIPickerView alloc]init];
    self.myToolBar=[[UIToolbar alloc] initWithFrame:CGRectMake(0.0, self.view.frame.size.height - self.myToolBar.frame.size.height - 44.0, self.view.frame.size.width, 44.0)];
    UIBarButtonItem *finishBtn=[[UIBarButtonItem alloc]initWithTitle:@"完成" style:UIBarButtonItemStyleDone target:self action:@selector(finishAction)];

    [self.myToolBar setItems:[NSArray arrayWithObject:finishBtn]];

    self.myPickerView.delegate=self;
    self.myPickerView.dataSource=self;
    self.myTextField.delegate=self;

    self.myTextField.inputView=self.myPickerView;
    self.myTextField.inputAccessoryView=self.myToolBar;

}

-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView{
    return 1;
}

-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component{
    return 5;
}

-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component{
    return @"xinxia,woxihuanni";
}

-(void)textFieldDidEndEditing:(UITextField *)textField{
    NSInteger row=[self.myPickerView selectedRowInComponent:0];
    self.myTextField.text=[NSString stringWithFormat:@"%ld",(long)row];
}

-(void)finishAction{
    [self.myTextField endEditing:YES];
}

@end