【代码笔记】点击出现选择框

#import <UIKit/UIKit.h>

@interface RootViewController : UIViewController
<UIActionSheetDelegate>

@end

#import "RootViewController.h"

@interface RootViewController ()

@end

@implementation RootViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}

- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
}
//点击任何处，出现选择框
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UIActionSheet *actionsheet=[[UIActionSheet alloc]initWithTitle:@"Choose Source" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Photo album",@"Default photo", nil];
[actionsheet showInView:self.view];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}