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我正在创建一个textField，点击后UIPickerView出现。 当我运行此代码时出现错误： Thread 1:Profram received signal:"SIGABRT"。Popup UIPickerView（iphone）
我对iPhone的开发很新，但负责人不在，我正在接受一个项目。
如果你可以让我知道什么是不对的......
这是ViewController.h的样子：
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController {
IBOutlet UIPickerView *picker;
IBOutlet UITextField *text;
}
- (IBAction)showPicker:(id)sender;
@end
和ViewController.m：
#import "ViewController.h"
@implementation ViewController
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
} else {
return YES;
}
}
- (void)showPicker {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.4];
[UIView setAnimationDelegate:self];
picker.center = CGPointMake(160, 240);
[UIView commitAnimations];
if (!self.navigationItem.rightBarButtonItem) {
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(done:)];
[self.navigationItem setRightBarButtonItem:doneButton animated:YES];
// [doneButton release];
}
}
- (void)hidePicker {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.4];
[UIView setAnimationDelegate:self];
picker.center = CGPointMake(160, 240);
[UIView commitAnimations];
[self.navigationItem setRightBarButtonItem:nil animated:YES];
}
- (void)done:(id)sender {
[self hidePicker];
[self.navigationItem setRightBarButtonItem:nil animated:YES];
}
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
[self showPicker];
return NO;
}