XCode的一些API

UI控件：
  设按钮标题：[but SetTitle @"" forState:UIControlStateNormal]; //注，好懒的设计，无语
  旋转：
-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation{
  return (interfaceOrientation == UIInterfaceOrientationPortrait ||
          interfaceOrientation == UIInterfaceOrientationLandScapeLeft);
}
绘图API：

 

-
 
(
void
)
drawRect
:(
CGRect
)
rect
{



    
CGContextRef
 bluecontext 
=
 
UIGraphicsGetCurrentContext
();
 

    
CGContextSetLineWidth
(
bluecontext
,
 
2.0
);


    

CGContextSetStrokeColorWithColor
(
bluecontext
,
 
[
UIColor
 blueColor
].
CGColor
);



    
CGContextMoveToPoint
(
bluecontext
,
 
1
,
 
1
);


    
CGContextAddLineToPoint
(
bluecontext
,
 
100
,
 
100
);


    
CGContextSetStrokeColorWithColor
(
bluecontext
,
 
[
UIColor
 redColor
].
CGColor
);


    
CGContextAddLineToPoint
(
bluecontext
,
 
200
,
 
100
);


    
CGContextStrokePath
(
bluecontext
);



}

类：
连接口   (IBOutlet)
连接方法 -(IBAction)