Ios7 pickerview未显示存储在数组中的数据

}

我想在picker视图中显示array的值，为此我使用3个数组和3个textfield，但picker视图不显示数据。

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非常感谢您的帮助。

在这方面，您无需每次都进行PickerView。进行首次pickerview并每次重新加载零部件

 // tell the picker the width of each row for a given component
  -(CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component       {
    int sectionWidth = 300;

   return sectionWidth;
}

 -(void)pickerDone:(id)sender
     {

        NSLog(@"Done Clicked");
         NSLog(@"Done Clicked%d",selectedTextfieldValue);
        myPickerView.hidden=YES;
        pickerToolbar.hidden=YES;

    }

  -(void)pickerCancel:(id)sender
    {

      NSLog(@"cancel");
      myPickerView.hidden=YES;
      pickerToolbar.hidden=YES;
   }
  @end

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可能这对其他明智的人有帮助访问这里&

请帮助任何人。这非常重要，因为我必须将从Web服务获取的值存储在数组中。。

         UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(pickerDone:)];
       [barItems addObject:doneBtn];



[pickerToolbar setItems:barItems animated:YES];


    myPickerView = [[UIPickerView alloc] init];
    myPickerView.showsSelectionIndicator = YES;
    CGRect pickerRect = myPickerView.bounds;
      myPickerView.bounds = pickerRect;
    myPickerView.frame = CGRectMake(0, 44, 320, 216);

     UIView* popoverView = [[UIView alloc] initWithFrame:CGRectMake(0, 44, 320, 300)];
     popoverView.backgroundColor = [UIColor whiteColor];
     [popoverView addSubview:myPickerView];

      [popoverView addSubview:pickerToolbar];
     [self.view addSubview:popoverView];
 }

   // tell the picker how many rows are available for a given component
  -(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:       (NSInteger)component
   {
      int count = 0;

       switch (selectedTextfieldValue)
     {
        case 1:
            count =namesArray.count;
             NSLog(@"%d",count);
              break;
          case 2:
               count =genderArray.count;
             NSLog(@"%d",count);

               break;
            case 3:
               count =ageArray.count;
        NSLog(@"%d",count);

        break;
    default:
           NSLog(@"default in  count");
        break;
    }

     return count;
  }

    // tell the picker how many components it will have
       -(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
      return 1;
     }

       // tell the picker the title for a given component
     -(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row  forComponent:(NSInteger)component {

       NSString *title;

      switch (selectedTextfieldValue) {
        case 1:
        title =namesArray[row];
        break;
        case 2:
        title =genderArray[row];
        break;
         case 3:
        title =ageArray[row];
        break;  
         default:
        NSLog(@"default");
        break;
}


 return title;

 // tell the picker the width of each row for a given component
  -(CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component       {
    int sectionWidth = 300;

   return sectionWidth;
}

 -(void)pickerDone:(id)sender
     {

        NSLog(@"Done Clicked");
         NSLog(@"Done Clicked%d",selectedTextfieldValue);
        myPickerView.hidden=YES;
        pickerToolbar.hidden=YES;

    }

  -(void)pickerCancel:(id)sender
    {

      NSLog(@"cancel");
      myPickerView.hidden=YES;
      pickerToolbar.hidden=YES;
   }
  @end

 -(void)textFieldDidBeginEditing:(UITextField *)textField
{
   [self.view endEditing:YES];
   if (textField==_text1)
 {
    _text1.delegate=self;
 } else if(textField==_text2) {
     _text2.delegate=self;
 } else {
    _text3.delegate=self;
  }
 selectedTextfieldValue=(int)textField.tag;
 [myPickerView reloadAllComponents];
}