自定义AlertView
（一）动画支持IOS7及以上
#import <UIKit/UIKit.h> @protocol ITTAlertViewDelegate <NSObject> @optional - (void)clickLeftButtonDelegate; - (void)clickRightButtonDelegate; @end @interface ITTAlertView : UIView @property (nonatomic,strong) id<ITTAlertViewDelegate> delegate; - (instancetype)initWithFrame:(CGRect)frame Title:(NSString *)title content:(NSString *)contentString leftButtonTitle:(NSString *)leftButtonTitle rightButtonTitle:(NSString *)rightButtonTitle; - (void)showAlertView; @end
（二）有弹跳动画，按钮有阴影
#import "ITTAlertView.h"
#define kAlertWidth 200
#define kAlertHeight 200
@interface ITTAlertView ()
{
UIView *alertView;
CGRect mainFrame;
}
@property (nonatomic,strong) UIView *backImageView;
@end
@implementation ITTAlertView
#define kTitleYOffset 15.0f
#define kTitleHeight 25.0f
#define kContentOffset 30.0f
#define kBetweenLabelOffset 20.0f
- (instancetype)initWithFrame:(CGRect)frame Title:(NSString *)title content:(NSString *)contentString leftButtonTitle:(NSString *)leftButtonTitle rightButtonTitle:(NSString *)rightButtonTitle
{
self = [super initWithFrame:frame];
if (self) {
[self initAlertViewFrame];
UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(kTitleYOffset, kContentOffset, kAlertWidth - 2 * kTitleYOffset, kTitleHeight)];
titleLabel.text = title;
titleLabel.textAlignment = NSTextAlignmentCenter;
[alertView addSubview:titleLabel];
UILabel *contentLabel = [[UILabel alloc] initWithFrame:CGRectMake(kTitleYOffset, kContentOffset + kTitleHeight, kAlertWidth - 2 * kTitleYOffset, kTitleHeight)];
contentLabel.text = contentString;
contentLabel.textAlignment = NSTextAlignmentCenter;
[alertView addSubview:contentLabel];
if (leftButtonTitle) {
CGFloat buttonWidth = (kAlertWidth - 2 * kTitleYOffset - kBetweenLabelOffset) / 2;
UIButton *leftButton = [[UIButton alloc] initWithFrame:CGRectMake(kTitleYOffset, kContentOffset + 3 * kTitleHeight, buttonWidth, 30.0f)];
[leftButton setTitle:leftButtonTitle forState:UIControlStateNormal];
[leftButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[leftButton setBackgroundColor:[UIColor blueColor]];
[leftButton addTarget:self action:@selector(clickLeftButton) forControlEvents:UIControlEventTouchUpInside];
[self setShadowStyle:leftButton];
[alertView addSubview:leftButton];
UIButton *rightButton = [[UIButton alloc] initWithFrame:CGRectMake(kTitleYOffset, kContentOffset + buttonWidth + kBetweenLabelOffset, buttonWidth, 30.0f)];
[rightButton setTitle:rightButtonTitle forState:UIControlStateNormal];
[rightButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[rightButton setBackgroundColor:[UIColor blueColor]];
[rightButton addTarget:self action:@selector(clickRightButton) forControlEvents:UIControlEventTouchUpInside];
[self setShadowStyle:rightButton];
[alertView addSubview:rightButton];
}
else {
UIButton *rightButton = [[UIButton alloc] initWithFrame:CGRectMake(kTitleYOffset, kContentOffset + 3 * kTitleHeight, kAlertWidth - 2 * kTitleYOffset, 30.0f)];
[rightButton setTitle:rightButtonTitle forState:UIControlStateNormal];
[rightButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[rightButton setBackgroundColor:[UIColor blueColor]];
[rightButton addTarget:self action:@selector(clickRightButton) forControlEvents:UIControlEventTouchUpInside];
[self setShadowStyle:rightButton];
[alertView addSubview:rightButton];
}
}
return self;
}
- (void)initAlertViewFrame {
self.frame = [self mainScreenFrame];
self.opaque = YES;
self.backgroundColor = [UIColor clearColor];
[self makeBackgroundView];
[self makeAlertPopupView];
[self moveAlertPopupView];
}
- (void)makeBackgroundView {
self.backImageView = [[UIView alloc] initWithFrame:[UIScreen mainScreen].bounds];
self.backImageView.backgroundColor = [UIColor blackColor];
self.backImageView.alpha = 0.6f;
[self addSubview:self.backImageView];
}
- (void)showAlertView {
[[UIApplication sharedApplication].keyWindow addSubview:self];
[self showAlertView4Animate];
}
- (void)makeAlertPopupView
{
CGRect frame = CGRectMake(0, 0, kAlertWidth, kAlertHeight);
CGRect screen = [self mainScreenFrame];
alertView = [[UIView alloc]initWithFrame:frame];
alertView.center = CGPointMake(CGRectGetWidth(screen) / 2, CGRectGetHeight(screen) / 2);
alertView.layer.masksToBounds = YES;
alertView.backgroundColor = [UIColor colorWithWhite:1.0f alpha:1.0f];
[self addSubview:alertView];
}
#pragma mark - View Animation Methods
- (void)moveAlertPopupView
{
CGRect screen = [self mainScreenFrame];
CATransform3D move = CATransform3DIdentity;
CGFloat initAlertViewYPosition = (CGRectGetHeight(screen) + CGRectGetHeight(alertView.frame)) / 2;
move = CATransform3DMakeTranslation(0, -initAlertViewYPosition, 0);
move = CATransform3DRotate(move, 40 * M_PI / 180, 0, 0, 1.0f);
alertView.layer.transform = move;
}
//弹出动画，带弹跳效果
- (void)showAlertView4Animate {
[UIView animateWithDuration:1.0 delay:0.0 usingSpringWithDamping:0.4f initialSpringVelocity:0.0 options:UIViewAnimationOptionCurveLinear animations:^{
CATransform3D move = CATransform3DIdentity;
alertView.layer.transform = move;
} completion:^(BOOL finished) {
}];
}
- (void)removeFromSuperview {
[self.backImageView removeFromSuperview];
self.backImageView = nil;
[UIView animateWithDuration:0.6 delay:0.0 usingSpringWithDamping:1.0 initialSpringVelocity:0.0 options:UIViewAnimationOptionCurveEaseInOut animations:^{
CATransform3D move = CATransform3DIdentity;
CGRect screen = [self mainScreenFrame];
CGFloat initAlertViewYPosition = (CGRectGetHeight(screen) + CGRectGetHeight(self.frame)) / 2;
move = CATransform3DMakeTranslation(0, initAlertViewYPosition, 0);
move = CATransform3DRotate(move, 40 * M_PI / 180, 0, 0, 1.0f);
alertView.layer.transform = move;
self.backImageView.alpha = 0.0;
} completion:^(BOOL finished) {
[super removeFromSuperview];
}];
}
- (CGRect)mainScreenFrame {
return [UIScreen mainScreen].bounds;
}
- (void)clickLeftButton {
[self removeFromSuperview];
if (self.delegate && [self.delegate respondsToSelector:@selector(clickLeftButtonDelegate)]) {
[self.delegate clickLeftButtonDelegate];
}
}
- (void)clickRightButton {
[self removeFromSuperview];
if (self.delegate && [self.delegate respondsToSelector:@selector(clickRightButtonDelegate)]) {
[self.delegate clickRightButtonDelegate];
}
}
- (void)setShadowStyle:(UIButton *)currentButton {
currentButton.layer.shadowOffset = CGSizeMake(1, 1);
currentButton.layer.shadowOpacity = 0.6f;
currentButton.layer.shadowRadius = 0.5;
}
@end