iphone小技巧2

1:NSString 路径处理

 

-pathComponents 的作用是 —–   /Users/realjons/kukufun.txt 这个路径以斜线拆分成几个子串，并把他放到NSArray数组中。

NSString *kukufunPath = @”/Users/realjons/readme/kukufun/kukufun.txt”;

NSArray *theComponents = [kukufunPath pathComponents];

 

 

[tmpStr pathExtension ] isEqualToString:@"xml" ]

 

2：ipad的4个方向选择

 

-(void)viewDidLoad
{
    。。。。。。
   
    [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(rotateViewInterfaceOrientation)
                                                 name:UIDeviceOrientationDidChangeNotification
                                               object:nil];
       
}




- (void)rotateViewInterfaceOrientation {
   
   
   
    UIInterfaceOrientation tmpOri =self.interfaceOrientation;  
    if (UIDeviceOrientationIsPortrait(tmpOri))
    {
        //self.view.frame=CGRectMake(0, 0, 1004, 768);
    }
    else
       
    {
        //self.view.frame=CGRectMake(0, 0, 768, 1004);
    }
}

 

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

｛

      if (UIDeviceOrientationIsPortrait(interfaceOrientation))
    {
        //self.view.frame=CGRectMake(0, 0, 1004, 768);
    }
    else
       
    {
        //self.view.frame=CGRectMake(0, 0, 768, 1004);
    }

 

 return YES;

｝

 

NSString:   过滤空格，和回车符号

 

NSString *text = [textView.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];

NSString *returnChar = [[NSString alloc]initWithFormat:@"%C",0x000A];

 

 if (text == nil || [text isEqualToString:@""] || returnChar)

 

 

 

3: 判断是iphone还是ipad

if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)

{

nibTitle = @"PhoneContent";

   }

 

 

NSString *nibTitle = @"PadContent";

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)

{

nibTitle = @"PhoneContent";

    }

    [[NSBundle mainBundle] loadNibNamed:nibTitle owner:self options:nil];

 

旋转view

 

CGAffineTransform transform = self.view.transform;

    transform = CGAffineTransformRotate(transform, (90*M_PI)/180);

    self.view.transform = transform;