自定义UIAlertView

////  CustomIOS7AlertView.h//  CustomIOS7AlertView////  Created by Richard on 20/09/2013.//  Copyright (c) 2013 Wimagguc.////  Lincesed under The MIT License (MIT)//  http://opensource.org/licenses/MIT//#import <UIKit/UIKit.h>@protocol CustomIOS7AlertViewDelegate- (void)customIOS7dialogButtonTouchUpInside:(id)alertView clickedButtonAtIndex:(NSInteger)buttonIndex;@end@interface CustomIOS7AlertView : UIView<CustomIOS7AlertViewDelegate>@property (nonatomic, retain) UIView *parentView;    // The parent view this 'dialog' is attached to@property (nonatomic, retain) UIView *dialogView;    // 对话的容器视图@property (nonatomic, retain) UIView *containerView; // 容器对话框@property (nonatomic, retain) UIView *buttonView;    // 框底部的按钮按钮@property (nonatomic, assign) id<CustomIOS7AlertViewDelegate> delegate;@property (nonatomic, retain) NSArray *buttonTitles;@property (nonatomic, assign) BOOL useMotionEffects;@property (copy) void (^onButtonTouchUpInside)(CustomIOS7AlertView *alertView, int buttonIndex) ;- (id)init;/*! 反对：使用[CustomIOS7AlertView init]方法不通过（通知）父视图 */- (id)initWithParentView: (UIView *)_parentView __attribute__ ((deprecated));- (void)show;- (void)close;// 监听按钮点击- (IBAction)customIOS7dialogButtonTouchUpInside:(id)sender;// 点击对话框底部按钮- (void)setOnButtonTouchUpInside:(void (^)(CustomIOS7AlertView *alertView, int buttonIndex))onButtonTouchUpInside;// 设备方向改变- (void)deviceOrientationDidChange: (NSNotification *)notification;- (void)dealloc;@end////  CustomIOS7AlertView.m//  CustomIOS7AlertView////  Created by Richard on 20/09/2013.//  Copyright (c) 2013 Wimagguc.////  Lincesed under The MIT License (MIT)//  http://opensource.org/licenses/MIT//#import "CustomIOS7AlertView.h"#import <QuartzCore/QuartzCore.h>const static CGFloat kCustomIOS7AlertViewDefaultButtonHeight       = 50;const static CGFloat kCustomIOS7AlertViewDefaultButtonSpacerHeight = 1;const static CGFloat kCustomIOS7AlertViewCornerRadius              = 7;const static CGFloat kCustomIOS7MotionEffectExtent                 = 10.0;@implementation CustomIOS7AlertViewCGFloat buttonHeight = 0;CGFloat buttonSpacerHeight = 0;@synthesize parentView, containerView, dialogView, buttonView, onButtonTouchUpInside;@synthesize delegate;@synthesize buttonTitles;@synthesize useMotionEffects;- (id)initWithParentView: (UIView *)_parentView{    self = [self init];    if (_parentView) {        self.frame = _parentView.frame;        self.parentView = _parentView;    }    return self;}- (id)init{    self = [super init];    if (self) {        self.frame = CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height);        delegate = self;        useMotionEffects = false;        buttonTitles = @[@"Close"];        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(deviceOrientationDidChange:) name:UIDeviceOrientationDidChangeNotification object:nil];        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];    }    return self;}// Create the dialog view, and animate opening the dialog- (void)show{    dialogView = [self createContainerView];      dialogView.layer.shouldRasterize = YES;    dialogView.layer.rasterizationScale = [[UIScreen mainScreen] scale];      self.layer.shouldRasterize = YES;    self.layer.rasterizationScale = [[UIScreen mainScreen] scale];#if (defined(__IPHONE_7_0))    if (useMotionEffects) {        [self applyMotionEffects];    }#endif    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];    // Can be attached to a view or to the top most window    // Attached to a view:    if (parentView != NULL) {        [parentView addSubview:self];    // Attached to the top most window (make sure we are using the right orientation):    } else {        UIInterfaceOrientation interfaceOrientation = [[UIApplication sharedApplication] statusBarOrientation];        switch (interfaceOrientation) {            case UIInterfaceOrientationLandscapeLeft:                self.transform = CGAffineTransformMakeRotation(M_PI * 270.0 / 180.0);                break;                            case UIInterfaceOrientationLandscapeRight:                self.transform = CGAffineTransformMakeRotation(M_PI * 90.0 / 180.0);                break;            case UIInterfaceOrientationPortraitUpsideDown:                self.transform = CGAffineTransformMakeRotation(M_PI * 180.0 / 180.0);                break;            default:                break;        }        [self setFrame:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)];        [[[[UIApplication sharedApplication] windows] firstObject] 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     ];}// 按钮被按下- (IBAction)customIOS7dialogButtonTouchUpInside:(id)sender{    if (delegate != NULL) {        [delegate customIOS7dialogButtonTouchUpInside:self clickedButtonAtIndex:[sender tag]];    }    if (onButtonTouchUpInside != NULL) {        onButtonTouchUpInside(self, [sender tag]);    }}// 按钮默认的行为- (void)customIOS7dialogButtonTouchUpInside: (CustomIOS7AlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{    NSLog(@"Button Clicked! %d, %d", buttonIndex, [alertView tag]);    [self close];}// 对话框关闭动画，然后销毁并从父移除视图- (void)close{    CATransform3D currentTransform = dialogView.layer.transform;    CGFloat startRotation = [[dialogView valueForKeyPath:@"layer.transform.rotation.z"] floatValue];    CATransform3D rotation = CATransform3DMakeRotation(-startRotation + M_PI * 270.0 / 180.0, 0.0f, 0.0f, 0.0f);    dialogView.layer.transform = CATransform3DConcat(rotation, 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 = CATransform3DConcat(currentTransform, 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// 创建容器视图，添加对话框，添加上下文和按钮- (UIView *)createContainerView{    if (containerView == NULL) {        containerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 300, 150)];    }    CGSize screenSize = [self countScreenSize];    CGSize dialogSize = [self countDialogSize];    // For the black background    [self setFrame:CGRectMake(0, 0, screenSize.width, screenSize.height)];    // This is the dialog's container; we attach the custom content and the buttons to this one    UIView *dialogContainer = [[UIView alloc] initWithFrame:CGRectMake((screenSize.width - dialogSize.width) / 2, (screenSize.height - dialogSize.height) / 2, dialogSize.width, dialogSize.height)];    // 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];    CGFloat cornerRadius = kCustomIOS7AlertViewCornerRadius;    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);    dialogContainer.layer.shadowColor = [UIColor blackColor].CGColor;    dialogContainer.layer.shadowPath = [UIBezierPath bezierPathWithRoundedRect:dialogContainer.bounds cornerRadius:dialogContainer.layer.cornerRadius].CGPath;    // There is a line above the button    // 按钮上边的线    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    // 添加自定义容器视图    [dialogContainer addSubview:containerView];    // Add the buttons too    // 添加按钮    [self addButtonsToView:dialogContainer];    return dialogContainer;}// Helper function: add buttons to container// 添加俩个按钮带对话框上边- (void)addButtonsToView: (UIView *)container{    if (buttonTitles==NULL) { return; }    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:kCustomIOS7AlertViewCornerRadius];        [container addSubview:closeButton];    }}// Helper function: count and return the dialog's size 对话框的大小- (CGSize)countDialogSize{    CGFloat dialogWidth = containerView.frame.size.width;    CGFloat dialogHeight = containerView.frame.size.height + buttonHeight + buttonSpacerHeight;    return CGSizeMake(dialogWidth, dialogHeight);}// Helper function: count and return the screen's size计算并返回屏幕的大小- (CGSize)countScreenSize{    if (buttonTitles!=NULL && [buttonTitles count] > 0) {        buttonHeight       = kCustomIOS7AlertViewDefaultButtonHeight;        buttonSpacerHeight = kCustomIOS7AlertViewDefaultButtonSpacerHeight;    } else {        buttonHeight = 0;        buttonSpacerHeight = 0;    }    CGFloat screenWidth = [UIScreen mainScreen].bounds.size.width;    CGFloat screenHeight = [UIScreen mainScreen].bounds.size.height;    UIInterfaceOrientation interfaceOrientation = [[UIApplication sharedApplication] statusBarOrientation];    if (UIInterfaceOrientationIsLandscape(interfaceOrientation)) {        CGFloat tmp = screenWidth;        screenWidth = screenHeight;        screenHeight = tmp;    }    return CGSizeMake(screenWidth, screenHeight);}#if (defined(__IPHONE_7_0))// Add motion effects添加动画效果- (void)applyMotionEffects {    if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_6_1) {        return;    }    UIInterpolatingMotionEffect *horizontalEffect = [[UIInterpolatingMotionEffect alloc] initWithKeyPath:@"center.x"                                                                                                    type:UIInterpolatingMotionEffectTypeTiltAlongHorizontalAxis];    horizontalEffect.minimumRelativeValue = @(-kCustomIOS7MotionEffectExtent);    horizontalEffect.maximumRelativeValue = @( kCustomIOS7MotionEffectExtent);    UIInterpolatingMotionEffect *verticalEffect = [[UIInterpolatingMotionEffect alloc] initWithKeyPath:@"center.y"                                                                                                  type:UIInterpolatingMotionEffectTypeTiltAlongVerticalAxis];    verticalEffect.minimumRelativeValue = @(-kCustomIOS7MotionEffectExtent);    verticalEffect.maximumRelativeValue = @( kCustomIOS7MotionEffectExtent);    UIMotionEffectGroup *motionEffectGroup = [[UIMotionEffectGroup alloc] init];    motionEffectGroup.motionEffects = @[horizontalEffect, verticalEffect];    [dialogView addMotionEffect:motionEffectGroup];}#endif- (void)dealloc{    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIDeviceOrientationDidChangeNotification object:nil];    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];}// 处理设备方向的改变- (void)deviceOrientationDidChange: (NSNotification *)notification{    // If dialog is attached to the parent view, it probably wants to handle the orientation change itself 如果对话框附加到父视图，它可能要处理的方向变化本身    if (parentView != NULL) {        return;    }    UIInterfaceOrientation interfaceOrientation = [[UIApplication sharedApplication] statusBarOrientation];    CGFloat startRotation = [[self valueForKeyPath:@"layer.transform.rotation.z"] floatValue];    CGAffineTransform rotation;    switch (interfaceOrientation) {        case UIInterfaceOrientationLandscapeLeft:            rotation = CGAffineTransformMakeRotation(-startRotation + M_PI * 270.0 / 180.0);            break;        case UIInterfaceOrientationLandscapeRight:            rotation = CGAffineTransformMakeRotation(-startRotation + M_PI * 90.0 / 180.0);            break;        case UIInterfaceOrientationPortraitUpsideDown:            rotation = CGAffineTransformMakeRotation(-startRotation + M_PI * 180.0 / 180.0);            break;        default:            rotation = CGAffineTransformMakeRotation(-startRotation + 0.0);            break;    }    [UIView animateWithDuration:0.2f delay:0.0 options:UIViewAnimationOptionTransitionNone animations:^{                         dialogView.transform = rotation; } completion:^(BOOL finished){                         // fix errors caused by being rotated one too many times 修复旋转太多次引起的程序错误                         dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 0.5f * NSEC_PER_SEC), dispatch_get_main_queue(), ^{                             UIInterfaceOrientation endInterfaceOrientation = [[UIApplication sharedApplication] statusBarOrientation];                             if (interfaceOrientation != endInterfaceOrientation) {                                 // TODO user moved phone again before than animation ended: rotation animation can introduce errors here                             }                         });                     } ];}// Handle keyboard show/hide changes处理键盘显示和隐藏- (void)keyboardWillShow: (NSNotification *)notification{    CGSize screenSize = [self countScreenSize];    CGSize dialogSize = [self countDialogSize];    CGSize keyboardSize = [[[notification userInfo] objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;    UIInterfaceOrientation interfaceOrientation = [[UIApplication sharedApplication] statusBarOrientation];    if (UIInterfaceOrientationIsLandscape(interfaceOrientation)) {        CGFloat tmp = keyboardSize.height;        keyboardSize.height = keyboardSize.width;        keyboardSize.width = tmp;    }    [UIView animateWithDuration:0.2f delay:0.0 options:UIViewAnimationOptionTransitionNone animations:^{                         dialogView.frame = CGRectMake((screenSize.width - dialogSize.width) / 2, (screenSize.height - keyboardSize.height - dialogSize.height) / 2, dialogSize.width, dialogSize.height); } completion:nil ];}- (void)keyboardWillHide: (NSNotification *)notification{    CGSize screenSize = [self countScreenSize];    CGSize dialogSize = [self countDialogSize];    [UIView animateWithDuration:0.2f delay:0.0 options:UIViewAnimationOptionTransitionNone animations:^{                         dialogView.frame = CGRectMake((screenSize.width - dialogSize.width) / 2, (screenSize.height - dialogSize.height) / 2, dialogSize.width, dialogSize.height); } completion:nil ];}@end