First we will write a class that extends UIView to create a Custom PopUp
Create a Cocoa file and name it CustomPopUp
You should get two files CustomPopUp.h and CustomPopUp.m
CustomPopUp.h
#import <Foundation/Foundation.h>#import <UIKit/UIKit.h>@protocol ClickDelegates;@interface CustomPopUp : UIView{ UIView *childPopUp; id<ClickDelegates> _click_delegate; UIViewController *_parent; }@property (nonatomic, retain) id<ClickDelegates> _click_delegate;@property (nonatomic, retain) UIViewController *_parent;-(void) initAlertwithParent : (UIViewController *) parent withDelegate : (id<ClickDelegates>) theDelegate;-(IBAction)OnOKClick :(id) sender;-(void) hide;-(void) show;@end// Delegate@protocol ClickDelegates<NSObject>@optional-(void) okClicked;-(void) cancelClicked;@end |
CustomPopUp.m
#import "CustomPopUp.h"#import "Util.h"@implementation CustomPopUp{ float popUpX; CGRect popUpRect;}@synthesize _click_delegate, _parent;-(void) initAlertwithParent : (UIViewController *) parent withDelegate : (id<ClickDelegates>) theDelegate{ self._click_delegate = theDelegate; self._parent = parent; CGRect screenRect = [[UIScreen mainScreen] bounds]; CGFloat screenWidth = screenRect.size.width; CGFloat screenHeight = screenRect.size.height; CGRect rect = CGRectMake(0, 0, screenWidth, screenHeight); self.frame = rect; self.backgroundColor = [UIColor clearColor]; childPopUp = [UIView new]; float popUpHeight = screenHeight/3; popUpX = 20.0; popUpRect = CGRectMake(popUpX, (screenHeight - popUpHeight)/2, screenWidth - (popUpX * 2), popUpHeight); childPopUp.center = self.center; self.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.001, 0.001); [self setBorderOnly:childPopUp withBGColor:[UIColor orangeColor] withCornerRadius:5.0 andBorderWidth:0.0 andBorderColor:[UIColor greenColor] WithAlpha:1]; childPopUp.frame = popUpRect; [self addSubview:childPopUp]; [self addLabel]; [self addButton]; [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:0.2]; [UIView setAnimationDelegate:self]; [UIView setAnimationDidStopSelector:@selector(bounce1AnimationStopped)]; self.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.1, 1.1); [UIView commitAnimations]; }-(void) show{ [self._parent.view addSubview:self];}-(void) addLabel{ // Add Label UILabel *lblForDisplay=[[UILabel alloc]initWithFrame:CGRectMake(popUpX, popUpX, popUpRect.size.width - popUpX, popUpX)]; lblForDisplay.backgroundColor=[UIColor clearColor]; lblForDisplay.textColor=[UIColor blackColor]; lblForDisplay.text=@"This is a custom Alert"; [childPopUp addSubview:lblForDisplay]; }-(void) addButton{ // Add Button UIButton *okBtn = [[UIButton alloc]initWithFrame:CGRectMake(popUpX, childPopUp.frame.size.height - 50, popUpRect.size.width - 40, 40)]; okBtn.backgroundColor=[UIColor blueColor]; [self setBorderOnly:okBtn withBGColor:[UIColor greenColor] withCornerRadius:5.0 andBorderWidth:0.0 andBorderColor:[UIColor greenColor] WithAlpha:1]; [okBtn setTitle:@"OK" forState:UIControlStateNormal]; [okBtn addTarget:self action:@selector(OnOKClick:) forControlEvents:UIControlEventTouchDown]; [childPopUp addSubview:okBtn]; }-(IBAction)OnOKClick :(id) sender{ [_click_delegate okClicked]; }-(void) show : (UIViewController *) parent{ }-(void) hide{ [self removeFromSuperview]; }- (void)bounce1AnimationStopped { [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:.2]; [UIView setAnimationDelegate:self]; [UIView setAnimationDidStopSelector:@selector(bounce2AnimationStopped)]; self.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.9, 0.9); [UIView commitAnimations];}- (void)bounce2AnimationStopped { [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:.2]; self.transform = CGAffineTransformIdentity; [UIView commitAnimations];}-(void) setBorderOnly:(UIView *) theView withBGColor:(UIColor *) color withCornerRadius :(float) radius andBorderWidth :(float) borderWidth andBorderColor :(UIColor *) bgColor WithAlpha:(float) curAlpha{ theView.layer.borderWidth = borderWidth; theView.layer.cornerRadius = radius; theView.layer.borderColor = [color CGColor]; UIColor *c = [color colorWithAlphaComponent:curAlpha]; theView.layer.backgroundColor = [c CGColor];}@end |
I have a sample interface like this.
Now the ViewController.m
#import "ViewController.h"@interface ViewController ()@end@implementation ViewController{ CustomPopUp *mPopUp; }- (void)viewDidLoad { [super viewDidLoad]; //create delegate mPopUp = [CustomPopUp new]; [mPopUp initAlertwithParent:self withDelegate:self]; }-(void) okClicked{ [mPopUp hide]; }-(void) cancelClicked{ NSLog(@"Cancel");}-(IBAction)showAlert :(id)sender{ [mPopUp show];}-(IBAction)dummyClick :(id)sender{ NSLog(@"Click Dummy");}- (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning];}@end |
MAKE SURE YOU HOOK UP THE BUTTONS TO THEIR CORRESPONDING FUNCTIONS.
You can download the complete source code from here.