UIActionSheet添加UIPickerView.

 今天写了一个ActionSheet添加的UIPickerView的程序，搜索了很多的资料

- (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;
}

 

 

这样就解决字体大小的问题了.