UIActionSheet添加UIPickerView.

From: http://tsyouaschen.iteye.com/blog/972683

- (void)configurePickersAndActionSheets {
    CGRect pickerFrame;

    if ((self.interfaceOrientation == UIInterfaceOrientationPortrait) ||
        (self.interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)) {
        pickerFrame = CGRectMake(0, 180, 0, 0);
    } else {
        pickerFrame = CGRectMake(0,180,480,200);
    }
    self.areaActionSheet = [[[UIActionSheet alloc] initWithTitle:@"Area" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Use",NULL] autorelease];
    self.areaPicker = [[[UIPickerView alloc] initWithFrame:pickerFrame] autorelease];
    self.areaPicker.delegate = self;
    self.areaPicker.showsSelectionIndicator = YES;
    [self.areaActionSheet addSubview:areaPicker];
}

上面的代码就是横屏和纵屏的大小设置 

 if ((self.interfaceOrientation == UIInterfaceOrientationLandscapeLeft) ||
        (self.interfaceOrientation == UIInterfaceOrientationLandscapeRight)) {
        [actionSheet setBounds:CGRectMake(0, 0, 480, 480)];
    } else {
        [actionSheet setBounds:CGRectMake(0, 0, 320, 618)];
    }

此处用来设置actionsheet的大小  

具体的添加PickerView如下：

UIActionSheet 
*
menu 
=
 
[
[
UIActionSheet alloc
]
 


initWithTitle
:
[
currentData objectAtIndex
:
0
]
 


delegate
:
self
cancelButtonTitle
:
@
"Done"

destructiveButtonTitle
:
@
"Cancel"

otherButtonTitles
:
nil
]
;


 

UIPickerView *
pickerView =
 [
[
UIPickerView   alloc]
initWithFrame:
CGRectMake(
0,40,480,200)
]
;

pickerView.delegate 
=
 self;
pickerView.showsSelectionIndicator 
=
 
YES
;    
 


[
menu addSubview:
pickerView]
;
[
menu showInView:
self.view]
;
[
menu setBounds:
CGRectMake(
0,0,480, 320)
]
;

[
pickerView release]
;
[
menu release]
;

 

OK这个就完成了ActionSheet的操作，可能你还会有一个问题就是在UIPickerView如何设置显示下拉框的

字体大小，即改变显示数组中的字体大小: 

需要重写实现如下方法 

- (UIView
 *)pickerView:(UIPickerView
 *)pickerView 

	
	
	
viewForRow:(NSInteger
)row 

	
	
  forComponent:(NSInteger
)component 

	
	
   reusingView:(UIView
 *)view
{ 

 
        UILabel
 *pickerLabel = (UILabel
 *)view
;

       if
 ((pickerLabel == nil
) || ([pickerView class
] != [UILabel
 class
])) {

		
CGRect
 frame = CGRectMake
(0
, 0
, 270
, 32
);

		
pickerLabel = [[UILabel
 alloc
] initWithFrame
:frame];

		
pickerLabel.
textAlignment
 =
UITextAlignmentLeft;


		
pickerLabel.
backgroundColor = [
UIColor 
clearColor
];


		
pickerLabel.font
 = [UIFont
 boldSystemFontOfSize
:18
];

 

     if
 (component == kStateComponent
) {

		
pickerLabel.
textAlignment
 = 
UITextAlignmentCenter;


		
pickerLabel.text
 = [self
.states
 objectAtIndex
:row];

    }

   else
 if
(component == kZipComponent
){

	
       pickerLabel.
textAlignment
 =
UITextAlignmentLeft;


	
       pickerLabel.text
 = [self
.zips
 objectAtIndex
:row];

   }

   pickerLabel.textColor
 = [UIColor
 blackColor
];

   return
 pickerLabel; 

}

return 
0
;


}