iOS - PopView简单弹出视图：

一、一个继承自UIViewController的类

#import <UIKit/UIKit.h>

@class PopupPanelView;

@interface RootViewController : UIViewController {

PopupPanelView *ppv;

UIButton *mainButton;

}

@property(nonatomic,retain)IBOutletPopupPanelView *ppv;

@property(nonatomic,retain)IBOutletUIButton *mainButton;

-(void)doPopupPanelView;

@end

#import "RootViewController.h"

#import "PopupPanelView.h"

@implementation RootViewController

@synthesize ppv,mainButton;

// Implement loadView to create a view hierarchy programmatically, without using a nib.

- (void)loadView {

[superloadView];

mainButton = [UIButtonbuttonWithType:UIButtonTypeRoundedRect];

[mainButtonsetFrame:CGRectMake(50,18,100,35)];

[mainButtonaddTarget:selfaction:@selector(doPopupPanelView)forControlEvents:UIControlEventTouchDown];

[mainButtonsetTitle:@"close"forState:UIControlStateNormal];

[self.viewaddSubview:mainButton];

ppv = [[PopupPanelViewalloc]initWithFrame:CGRectMake(50,50,100,300)];

[self.viewaddSubview:ppv];

}

-(void)doPopupPanelView{

if(ppv.isOpen){

[ppvviewClose];

[mainButtonsetTitle:@"open"forState:UIControlStateNormal];

}else{

[ppvviewOpen];

[mainButtonsetTitle:@"close"forState:UIControlStateNormal];

}

}

- (void)didReceiveMemoryWarning {

// Releases the view if it doesn't have a superview.

    [superdidReceiveMemoryWarning];

// 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 {

[mainButton release];

[ppvrelease];

    [super dealloc];

}

@end

二、一个继承自UIView的类。

#import <UIKit/UIKit.h>

#import <QuartzCore/QuartzCore.h>

@interface PopupPanelView : UIView {

CGRect rectForOpen;

CGRect rectForClose;

BOOL isOpen;

}

@property BOOL isOpen;

-(void)initForButtons;

-(void)buttonPressed:(UIButton *)button;

-(void)viewOpen;

-(void)viewClose;

@end

#import "PopupPanelView.h"

@implementation PopupPanelView

@synthesize isOpen;

- (id)initWithFrame:(CGRect)frame {

    if (self = [superinitWithFrame:frame]) {

        // Initialization code

isOpen = YES;

// rectForOpen = self.frame;

        rectForOpen = CGRectMake(50,90,200, 120);

rectForClose =CGRectMake(rectForOpen.origin.x ,rectForOpen.origin.y,rectForOpen.size.width,0);

        

[selfsetBackgroundColor:[UIColorlightGrayColor]];

[self.layersetCornerRadius:10.0];  //设置边角圆滑度

[selfsetClipsToBounds:YES];        //content and subviews are clipped to the bounds of the view

[selfinitForButtons];

}

    return self;

}

CGFloat btx = 20;

CGFloat bty = 50;

CGFloat btwidth = 60;

CGFloat byheight = 30;

//初始化该view上的button

-(void)initForButtons{

NSString *buttonName = nil;

UIButton *button = nil;

for(int i=0; i<5; i++){

buttonName = [[NSStringalloc]initWithFormat:@"bt0%d",i];

button = [UIButtonbuttonWithType:UIButtonTypeRoundedRect];

button.frame = CGRectMake(btx, bty, btwidth, byheight);

[button setTitle:buttonNameforState:UIControlStateNormal];

button.tag = i;

[button addTarget:selfaction:@selector(buttonPressed:)forControlEvents:UIControlEventTouchDown];

[self addSubview:button];

bty += 40;

[buttonName release];

}

bty = 50;//还原

}

-(void)buttonPressed:(UIButton *)button{

int tag = button.tag;

NSString *alertMessage = [[NSStringalloc]initWithFormat:@" %d号按钮被按下了...",tag];

UIAlertView *alert = nil;

alert = [[UIAlertViewalloc]initWithTitle:nilmessage:alertMessagedelegate:selfcancelButtonTitle:@"cancel"otherButtonTitles:nil,nil];

[alert show];

[alertMessage release];

}

-(void)viewOpen{

isOpen = YES;

[UIViewbeginAnimations:nilcontext:nil];

[UIViewsetAnimationDuration:0.4];

[UIViewsetAnimationCurve:UIViewAnimationCurveLinear];

[selfsetFrame:rectForOpen];

[UIViewcommitAnimations];

}

-(void)viewClose{

isOpen = NO;

[UIViewbeginAnimations:nilcontext:nil];

[UIViewsetAnimationDuration:0.4];

[UIViewsetAnimationCurve:UIViewAnimationCurveLinear];

[selfsetFrame:rectForClose];

[UIViewcommitAnimations];

}

- (void)drawRect:(CGRect)rect {

    // Drawing code

//如果要把添加button的这两行代码放到这里，那么drawRect方法只能画出按钮的边框，字体显示不出来

/*

[self addSubview:self.button];

[self addSubview:self.button1];

*/

}

- (void)dealloc {

    [super dealloc];

}

@end

两个类   做适当修改