UIActionSheet的各种属性、方法及代理的使用

#import "ActionSheetTestViewController.h"
@implementation ActionSheetTestViewController
/*
Tasks
 
Creating Action Sheets
	– initWithTitle:delegate:cancelButtonTitle:destructiveButtonTitle:otherButtonTitles:  
	Setting Properties
	delegate  property  
	title  property  
	visible  property  
	actionSheetStyle  property  无例
Configuring Buttons
	– addButtonWithTitle:  
	numberOfButtons  property  
	– buttonTitleAtIndex:  
	cancelButtonIndex  property  
	destructiveButtonIndex  property  
	firstOtherButtonIndex  property  
Displaying
	– showFromTabBar:  
	– showFromToolbar:  
	– showInView:  
Dismissing
	– dismissWithClickedButtonIndex:animated:  
*/

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
	UILabel *numOfBtn = [[UILabel alloc]initWithFrame:CGRectMake(10.0, 10.0, 30.0, 30.0)];
	UILabel *titleOfBtn = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 10.0, 100.0, 30.0)];
	UILabel *cancelBtnIndex = [[UILabel alloc]initWithFrame:CGRectMake(200.0, 10.0, 30.0, 30.0)];
	UILabel *destructiveBtnIndex = [[UILabel alloc]initWithFrame:CGRectMake(10.0, 50.0, 30.0, 30.0)];
	UILabel *firstOtherBtnIndex = [[UILabel alloc]initWithFrame:CGRectMake(50.0, 50.0, 30.0, 30.0)];
	UIActionSheet *actionSheetTest = [[UIActionSheet alloc]initWithTitle:@"ActionSheetTest" 
								delegate:self
								cancelButtonTitle:@"CancelButton" 
								destructiveButtonTitle:@"RedButton" 
								otherButtonTitles:@"OtherButton1",@"OtherButton2",nil];
	//看actionSheet是否可见，这是一个只读属性
	BOOL a = actionSheetTest.visible;
	NSLog(@"%d",a);
	
	//不考虑指定索引的按钮的动作，可以设置是否有动画
	[actionSheetTest dismissWithClickedButtonIndex:0 animated:NO];
	
	//设置标题
	actionSheetTest.title = @"ActionSheetTitle";
	
	//通过给定标题添加按钮
	[actionSheetTest addButtonWithTitle:@"addButtonWithTitle"];
	
	//按钮总数
	numOfBtn.text = [NSString stringWithFormat:@"%d",actionSheetTest.numberOfButtons];
	
	//获取指定索引的标题
	titleOfBtn.text = [actionSheetTest buttonTitleAtIndex:4];
	
	//获取取消按钮的索引
	cancelBtnIndex.text = [NSString stringWithFormat:@"%d",actionSheetTest.cancelButtonIndex];
	
	//获取红色按钮的索引
	destructiveBtnIndex.text = [NSString stringWithFormat:@"%d",actionSheetTest.destructiveButtonIndex];
	
	//获取第一个其他按钮的索引
	firstOtherBtnIndex.text = [NSString stringWithFormat:@"%d",actionSheetTest.firstOtherButtonIndex];
	
	//设置actionSheet出现的方式
	[actionSheetTest showInView:self.view];//or [actionSheetTest showFromTabBar:] or [actionSheetTest showFromToolBar:]
	
	[self.view addSubview:numOfBtn];
	[self.view addSubview:titleOfBtn];
	[self.view addSubview:cancelBtnIndex];
	[self.view addSubview:destructiveBtnIndex];
	[self.view addSubview:firstOtherBtnIndex];
	
	[actionSheetTest release];
	[numOfBtn release];
	[titleOfBtn release];
	[cancelBtnIndex release];
	[destructiveBtnIndex release];
	[firstOtherBtnIndex release];
	
    [super viewDidLoad];
}

/*
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
*/
- (void)didReceiveMemoryWarning {
	// Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];
	
	// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
	// Release any retained subviews of the main view.
	// e.g. self.myOutlet = nil;
}

- (void)dealloc {
    [super dealloc];
}

#pragma mark -- UIActionSheetDelegate --
//根据被点击按钮的索引处理点击事件
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
	NSLog(@"clickedButtonAtIndex:%d",buttonIndex);
}
//ActionSheet已经消失时
- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex {
	NSLog(@"didDismissWithButtonIndex:%d",buttonIndex);
}
//ActionSheet即将消失时
- (void)actionSheet:(UIActionSheet *)actionSheet willDismissWithButtonIndex:(NSInteger)buttonIndex {
	NSLog(@"willDismissWithButtonIndex:%d",buttonIndex);
}
//
- (void)actionSheetCancel:(UIActionSheet *)actionSheet {
	NSLog(@"actionSheetCancel");
	
}
//ActionSheet已经显示时
- (void)didPresentActionSheet:(UIActionSheet *)actionSheet {
	NSLog(@"didPresentActionSheet%@",actionSheet);
}
//ActionSheet即将显示时
- (void)willPresentActionSheet:(UIActionSheet *)actionSheet {
	NSLog(@"willPresentActionSheet%@",actionSheet);
}

@end