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#pragma mark - touchMethod
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
    
    [super touchesBegan:touches withEvent:event];
    
    [self allEditActionsResignFirstResponder];
}

- (void)allEditActionsResignFirstResponder{
    [[self.view viewWithTag:Tag_UsernameTextField] resignFirstResponder];

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UIAlertView *alertView = [[UIAlertView alloc]
                          initWithTitle:@"Title"
                          message:@"message"
                          delegate:self
                          cancelButtonTitle:@"取消"
                          otherButtonTitles:@"确定", nil];
[alertView show];

#pragma marks -- UIAlertViewDelegate
//根据被点击按钮的索引处理点击事件  

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other:

• The iOS Design Cheat Sheet

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- (BOOL)isValidateEmail:(NSString *)email {
    NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
    NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
    return [emailTest evaluateWithObject:email];
}

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#warning - 手动创建 warning

#pragma mark - 类似类方法导航的标识
#pragma mark - tableView delegate

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// 根据 url 获取图片
UIImage *imageToSave = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:[dic objectForKey:@"userPic"]]]];

// 获取 Documents 文件夹目录
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *basePath = ([paths count] > 0) ? [paths objectAtIndex:0] : nil;

// 转换成 NSData 格式
NSData * binaryImageData = UIImagePNGRepresentation(imageToSave);

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//截取屏幕图片
UIGraphicsBeginImageContext(self.view.bounds.size);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *screenImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
//以png格式返回指定图片的数据
NSData *screenImageData = UIImagePNGRepresentation(screenImage);

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• 转到目标(空)文件夹，然后 clone 仓库：

$ git clone Git地址

• 验证是否 clone 成功：

$ ls

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1. In ViewControllerB.h, below the #import, but above @interface you specify the protocol.

@protocol adTapGestureCapturedDelegate <NSObject>
-(void)adTapGestureCaptured:(UITapGestureRecognizer *)gesture;
@end

2.next still in the ViewControllerB.h you need to setup a delegate property and synthesize in ViewControllerB.m.

@property (weak, nonatomic) id<adTapGestureCapturedDelegate> delegate;

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Just like UITextField, but there are some differences listed below.