单击文本字段时，我正在使用 inputView 显示 pickerView 。然后我想用数字 1-100 填充选择器视图。我有一些我认为可以工作的代码，但是当我运行程序并单击 textField 时，它只会弹出一个空的选取器视图。还需要知道如何在工具栏上放置另一个按钮。我想在右侧有一个提交按钮来确认用户的选择（将完成更改为取消）我必须在界面构建器中使用选择器和按钮做些什么吗？因为我实际上在界面构建器中没有这些，因为它们是用代码制作的......
下面是我的 .h 和 .m 文件。
。H - -
@interface TestinputviewViewController : UIViewController <UITextFieldDelegate,UIPickerViewDataSource,UIPickerViewDelegate> {
IBOutlet UITextField *textField;
NSMutableArray *pickerViewArray;
}
-(IBAction) textFieldDidBeginEditing;
@end
.m---
#import "TestinputviewViewController.h"
@implementation TestinputviewViewController
-(IBAction)textFieldDidBeginEditing{
UIPickerView *myPickerView = [[UIPickerView alloc] init];
textField.inputView = myPickerView;
myPickerView.showsSelectionIndicator = YES;
myPickerView.delegate = self;
myPickerView.dataSource = self;
[myPickerView release];
UIToolbar *myToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0,0,320,44)];
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(inputAccessoryViewDidFinish)];
[myToolbar setItems:[NSArray arrayWithObject:doneButton] animated:NO];
textField.inputAccessoryView = myToolbar;
}
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)myPickerView {
return 1;
}
-(NSInteger)pickerView:(UIPickerView *) myPickerView numberOfRowsInComponent: (NSInteger)component {
return [pickerViewArray count];
}
-(NSString *)pikerView:(UIPickerView *) myPickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
return [pickerViewArray objectAtIndex:row];
}
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
pickerViewArray = [[NSMutableArray alloc] init];
for (int i = 1; i<=20; i++) {
NSString *myString = [NSString stringWithFormat:@"%d%",i];
[pickerViewArray addObject:myString];
}
}