Ios4 文本字段编辑上UIPickerView的多个源

到目前为止，我得到的是

@synthesize txtCountry,txtState;
int flgTextField;
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField { 
    [pickerView reloadAllComponents];

    // Make a new view, or do what you want here
    if(textField == txtCountry || textField == txtState){
        flgTextField = textField.tag;
        [UIView beginAnimations:nil context:NULL];
        //[pvState setFrame:CGRectMake(0.0f, 199.0f, 320.0f, 216.0f)];
        [UIView commitAnimations];  
        return NO;
    }
    else {
        return YES;
    }

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

- (NSInteger)pickerView:(UIPickerView *)thePickerView numberOfRowsInComponent:(NSInteger)component {

    if(flgTextField==1){
        return [arryCountry count];
    }
    else {
        return [arryState count];
    }

}

- (NSString *)pickerView:(UIPickerView *)thePickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {

    if(flgTextField==1){
        return [arryCountry objectAtIndex:row];
    }
    else{
        return [arryState objectAtIndex:row];
    }

}

 - (void)viewDidLoad {
     arryCountry = [[NSMutableArray alloc] init];
     arryState = [[NSMutableArray alloc] init];
     [arryCountry addObject:@" 100 "];
     [arryCountry addObject:@" 200 "];
     [arryCountry addObject:@" 400 "];
     [arryCountry addObject:@" 600 "];
     [arryCountry addObject:@" 1000 "];
     [arryState addObject:@" a "];
     [arryState addObject:@" b "];
     [arryState addObject:@" c "];
     [arryState addObject:@" d "];
     [arryState addObject:@" e "];
      [super viewDidLoad];
 }

在我的电脑里 及

@接口联系人：UIViewController{
IBOUTLE UITextField*txtCountry；
IBOUTLE UITextField*txtState；
NSMutableArray*arryCountry；
NSMUTABLEARRY*arryState；
UIPickerView*pickerView；
}
@不动产（非原子，保留）IBOutlet UITextField*txtCountry；
@属性（非原子，保留）IBOutlet UITextField*txtState；

在我的.h文件中

现在文本字段是不可编辑的，我需要一些帮助或指导，或者任何关于如何将UIPicker连接到多个源的教程，这些源可以在文本字段编辑时更改，因此我看没有人关心：）

我现在有3个文本字段，每当我触摸textField1或textField2时，选择器都会更改值，并且没有键盘。当我触摸textField3时，键盘出现，选择器隐藏。现在，如果我通过单击返回关闭键盘，然后单击textField1选择器再次出现，但如果我不通过单击按钮关闭键盘，选择器将停留在选择器上方。我需要的是当键盘是第一响应者（我在屏幕上看到它）时，如果我点击文本字段1，只看到选择器，就隐藏它

    int variabla;

        -(void)textFieldDidBeginEditing:(UITextField *)textField{
            [pickerView setHidden:YES];
            if (textField1.editing == YES) {
                [textField1 resignFirstResponder];
                [pickerView setHidden:NO];
                variabla = 1;
            }else if (textField2.editing == YES) {  
                [textField2 resignFirstResponder];
                [pickerView setHidden:NO];
                variabla = 2;
            }   
            NSLog(@"variabla %d",variabla); 
            [pickerView reloadAllComponents];
        }

        - (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView;
        {
            return 1;
        }
        - (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component;
        {
            if (variabla == 1) {
                return [pickerArray1 count];
            }else if (variabla == 2) {
                return [pickerArray2 count];
            }else {
                return 0;
            }   
        }
        - (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component;
        {   
            if (variabla == 1) {
                return [pickerArray1 objectAtIndex:row];        
            }else if (variabla == 2) {
                return [pickerArray2 objectAtIndex:row];
            }else {
                return 0;
            }   
        }
        - (void)textFieldShouldReturn:(UITextField *)textField{ 
            [textField resignFirstResponder];
        }
- (void)viewDidLoad {
    [super viewDidLoad];
    [pickerView setHidden:YES];
    pickerArray1 = [[NSMutableArray alloc] initWithObjects:@"0", @"1", @"2", nil];
    pickerArray2 = [[NSMutableArray alloc] initWithObjects:@"3", @"4", @"5", nil];
}

---

在textFieldShouldBeginEditing中，为什么对国家/地区和州字段返回NO？很抱歉，我没有看到您的回答，我已经修复了代码，下面是工作版本，我只需要一件事，当我按textField1时隐藏键盘：）

    int variabla;

        -(void)textFieldDidBeginEditing:(UITextField *)textField{
            [pickerView setHidden:YES];
            if (textField1.editing == YES) {
                [textField1 resignFirstResponder];
                [pickerView setHidden:NO];
                variabla = 1;
            }else if (textField2.editing == YES) {  
                [textField2 resignFirstResponder];
                [pickerView setHidden:NO];
                variabla = 2;
            }   
            NSLog(@"variabla %d",variabla); 
            [pickerView reloadAllComponents];
        }

        - (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView;
        {
            return 1;
        }
        - (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component;
        {
            if (variabla == 1) {
                return [pickerArray1 count];
            }else if (variabla == 2) {
                return [pickerArray2 count];
            }else {
                return 0;
            }   
        }
        - (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component;
        {   
            if (variabla == 1) {
                return [pickerArray1 objectAtIndex:row];        
            }else if (variabla == 2) {
                return [pickerArray2 objectAtIndex:row];
            }else {
                return 0;
            }   
        }
        - (void)textFieldShouldReturn:(UITextField *)textField{ 
            [textField resignFirstResponder];
        }
- (void)viewDidLoad {
    [super viewDidLoad];
    [pickerView setHidden:YES];
    pickerArray1 = [[NSMutableArray alloc] initWithObjects:@"0", @"1", @"2", nil];
    pickerArray2 = [[NSMutableArray alloc] initWithObjects:@"3", @"4", @"5", nil];
}