完美兼容iOS7自定义的AlertView
在适配iOS7时发现，7以下的自定义的AlertView不起作用，查了下文档，原来从iOS7开始，AlertView不能随便写了，所以就找到个替代AlertView的方法
#import <UIKit/UIKit.h> @interface CustomIOS7AlertView : UIView @property (nonatomic, retain) UIView *parentView; @property (nonatomic, retain) UIView *dialogView; @property (nonatomic, retain) UIView *containerView; @property (nonatomic, retain) UIView *buttonView; @property (nonatomic, assign) id delegate; @property (nonatomic, retain) NSMutableArray *buttonTitles; - (id)initWithParentView: (UIView *)_parentView; - (void)show; - (void)close; - (void)setButtonTitles: (NSMutableArray *)buttonTitles;
#import "CustomIOS7AlertView.h" @implementation CustomIOS7AlertView @synthesize parentView, containerView, dialogView, buttonView; @synthesize delegate; @synthesize buttonTitles; CGFloat static defaultButtonHeight = 50; CGFloat static defaultButtonSpacerHeight = 1; CGFloat static cornerRadius = 7; CGFloat buttonHeight = 0; CGFloat buttonSpacerHeight = 0; - (id)initWithParentView: (UIView *)_parentView { self = [super initWithFrame:_parentView.frame]; if (self) { parentView = _parentView; delegate = self; buttonTitles = [NSMutableArray arrayWithObject:@"Close"]; } return self; } // Create the dialog view, and animate opening the dialog - (void)show { dialogView = [self createContainerView]; dialogView.layer.opacity = 0.5f; dialogView.layer.transform = CATransform3DMakeScale(1.3f, 1.3f, 1.0); self.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0]; [self addSubview:dialogView]; [parentView addSubview:self]; [UIView animateWithDuration:0.2f delay:0.0 options:UIViewAnimationOptionCurveEaseInOut animations:^{ self.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.4f]; dialogView.layer.opacity = 1.0f; dialogView.layer.transform = CATransform3DMakeScale(1, 1, 1); } completion:NULL ]; } - (void)setDelegate: (id)_delegate { delegate = _delegate; } // Button has touched - (IBAction)customIOS7dialogButtonTouchUpInside:(id)sender { [delegate customIOS7dialogButtonTouchUpInside:self clickedButtonAtIndex:[sender tag]]; [self close]; } // Default button behaviour - (void)customIOS7dialogButtonTouchUpInside: (CustomIOS7AlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex { NSLog(@"Button Clicked! %d, %d", buttonIndex, [alertView tag]); [self close]; } // Dialog close animation then cleaning and removing the view from the parent - (void)close { dialogView.layer.transform = CATransform3DMakeScale(1, 1, 1); dialogView.layer.opacity = 1.0f; [UIView animateWithDuration:0.2f delay:0.0 options:UIViewAnimationOptionTransitionNone animations:^{ self.backgroundColor = [UIColor colorWithRed:0.0f green:0.0f blue:0.0f alpha:0.0f]; dialogView.layer.transform = CATransform3DMakeScale(0.6f, 0.6f, 1.0); dialogView.layer.opacity = 0.0f; } completion:^(BOOL finished) { for (UIView *v in [self subviews]) { [v removeFromSuperview]; } [self removeFromSuperview]; } ]; } - (void)setSubView: (UIView *)subView { containerView = subView; } // Creates the container view here: create the dialog, then add the custom content and buttons - (UIView *)createContainerView { if ([buttonTitles count] > 0) { buttonHeight = defaultButtonHeight; buttonSpacerHeight = defaultButtonSpacerHeight; } else { buttonHeight = 0; buttonSpacerHeight = 0; } if (containerView == NULL) { containerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 300, 150)]; } CGFloat dialogWidth = containerView.frame.size.width; CGFloat dialogHeight = containerView.frame.size.height + buttonHeight + buttonSpacerHeight; CGFloat screenWidth = [UIScreen mainScreen].bounds.size.width; CGFloat screenHeight = [UIScreen mainScreen].bounds.size.height; UIDeviceOrientation deviceOrientation = [[UIDevice currentDevice] orientation]; if (UIDeviceOrientationIsLandscape(deviceOrientation)) { CGFloat tmp = screenWidth; screenWidth = screenHeight; screenHeight = tmp; } // For the black background [self setFrame:CGRectMake(0, 0, screenWidth, screenHeight)]; // This is the dialog's container; we attach the custom content and the buttons to this one UIView *dialogContainer = [[UIView alloc] initWithFrame:CGRectMake((screenWidth - dialogWidth) / 2, (screenHeight - dialogHeight) / 2, dialogWidth, dialogHeight)]; // First, we style the dialog to match the iOS7 UIAlertView >>> CAGradientLayer *gradient = [CAGradientLayer layer]; gradient.frame = dialogContainer.bounds; gradient.colors = [NSArray arrayWithObjects: (id)[[UIColor colorWithRed:218.0/255.0 green:218.0/255.0 blue:218.0/255.0 alpha:1.0f] CGColor], (id)[[UIColor colorWithRed:233.0/255.0 green:233.0/255.0 blue:233.0/255.0 alpha:1.0f] CGColor], (id)[[UIColor colorWithRed:218.0/255.0 green:218.0/255.0 blue:218.0/255.0 alpha:1.0f] CGColor], nil]; gradient.cornerRadius = cornerRadius; [dialogContainer.layer insertSublayer:gradient atIndex:0]; dialogContainer.layer.cornerRadius = cornerRadius; dialogContainer.layer.borderColor = [[UIColor colorWithRed:198.0/255.0 green:198.0/255.0 blue:198.0/255.0 alpha:1.0f] CGColor]; dialogContainer.layer.borderWidth = 1; dialogContainer.layer.shadowRadius = cornerRadius + 5; dialogContainer.layer.shadowOpacity = 0.1f; dialogContainer.layer.shadowOffset = CGSizeMake(0 - (cornerRadius+5)/2, 0 - (cornerRadius+5)/2); // ^^^ // There is a line above the button UIView *lineView = [[UIView alloc] initWithFrame:CGRectMake(0, dialogContainer.bounds.size.height - buttonHeight - buttonSpacerHeight, dialogContainer.bounds.size.width, buttonSpacerHeight)]; lineView.backgroundColor = [UIColor colorWithRed:198.0/255.0 green:198.0/255.0 blue:198.0/255.0 alpha:1.0f]; [dialogContainer addSubview:lineView]; // ^^^ // Add the custom container if there is any [dialogContainer addSubview:containerView]; // Add the buttons too [self addButtonsToView:dialogContainer]; return dialogContainer; } - (void)addButtonsToView: (UIView *)container { CGFloat buttonWidth = container.bounds.size.width / [buttonTitles count]; for (int i=0; i<[buttonTitles count]; i++) { UIButton *closeButton = [UIButton buttonWithType:UIButtonTypeCustom]; [closeButton setFrame:CGRectMake(i * buttonWidth, container.bounds.size.height - buttonHeight, buttonWidth, buttonHeight)]; [closeButton addTarget:self action:@selector(customIOS7dialogButtonTouchUpInside:) forControlEvents:UIControlEventTouchUpInside]; [closeButton setTag:i]; [closeButton setTitle:[buttonTitles objectAtIndex:i] forState:UIControlStateNormal]; [closeButton setTitleColor:[UIColor colorWithRed:0.0f green:0.5f blue:1.0f alpha:1.0f] forState:UIControlStateNormal]; [closeButton setTitleColor:[UIColor colorWithRed:0.2f green:0.2f blue:0.2f alpha:0.5f] forState:UIControlStateHighlighted]; [closeButton.titleLabel setFont:[UIFont boldSystemFontOfSize:14.0f]]; [closeButton.layer setCornerRadius:cornerRadius]; [container addSubview:closeButton]; } } @end
用法：
CustomIOS7AlertView *alertView = [[CustomIOS7AlertView alloc] initWithParentView:self.view]; // Add some custom content to the alert view [alertView setContainerView:[self createDemoView]]; [alertView setButtonTitles:[NSMutableArray arrayWithObjects:@"Close1", @"Close2", @"Close3", nil]]; [alertView setDelegate:self]; // And launch the dialog [alertView show];
- (UIView *)createDemoView { UIView *demoView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 290, 200)]; UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 10, 270, 180)]; [imageView setImage:[UIImage imageNamed:@"demo"]]; [demoView addSubview:imageView]; return demoView; }
其他：完整的Demo下载
