模仿微信的Actionsheet
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最近需要写一个类似微信的actionsheet然后就模仿写了个，实现方法简单，下面是代码：
@class GKDActionSheet; typedef void(^GKDActionSheetBlock)(NSInteger buttonIndex); @protocol GKDActionSheetDelegate <NSObject> @optional /** * 新增一个协议方法 */ - (void)actionSheet:(GKDActionSheet *)actionSheet didClickedButtonAtIndex:(NSInteger)buttonIndex; @end @interface GKDActionSheet : UIView @property (nonatomic ,copy) GKDActionSheetBlock clickBlock; @property (nonatomic ,weak) id<GKDActionSheetDelegate> delegate; #pragma mark - 构造方法 /** * 初始化方法 * * @param buttonTitles 需要以数组形式传入 * @param cancleTitle 取消按钮的名称 * @param clicked 回调的block */ + (instancetype)sheetWithButtonTitles:(NSArray *)buttonTitles andCancleTitle:(NSString *)cancleTitle clicked:(GKDActionSheetBlock)clicked; - (instancetype)initWithButtonTitles:(NSArray *)buttonTitles andCancleTitle:(NSString *)cancleTitle clicked:(GKDActionSheetBlock)clicked; /** * 初始化方法 * * @param buttonTitles 传入参数数组 * @param cancleTitle 取消按钮 * @param redButtonIndex 红色字体按钮 * @param clicked 点击的回调 */ + (instancetype)sheetWithButtonTitles:(NSArray *)buttonTitles andCancleTitle:(NSString *)cancleTitle redButtonIndex:(NSInteger)redButtonIndex clicked:(GKDActionSheetBlock)clicked; - (instancetype)initWithButtonTitles:(NSArray *)buttonTitles andCancleTitle:(NSString *)cancleTitle redButtonIndex:(NSInteger)redButtonIndex clicked:(GKDActionSheetBlock)clicked; /** * 初始化方法 * * @param buttonTitles 参数数组 * @param cancleTitle 取消按钮 * @param redButtonIndex 红色按钮的索引 * @param delegate 协议 */ + (instancetype)sheetWithButtonTitles:(NSArray *)buttonTitles andCancleTitle:(NSString *)cancleTitle redButtonIndex:(NSInteger)redButtonIndex delegate:(id<GKDActionSheetDelegate>)delegate; - (instancetype)initWithButtonTitles:(NSArray *)buttonTitles andCancleTitle:(NSString *)cancleTitle redButtonIndex:(NSInteger)redButtonIndex delegate:(id<GKDActionSheetDelegate>)delegate; /** * 添加红色字体按钮 */ @property (nonatomic, assign)NSInteger redButtonIndex; /** * show的方法 */ - (void)show; - (void)showInView:(UIView *)view;
@property (nonatomic, copy) NSString *cancleTitle; @property (nonatomic, strong) NSMutableArray *buttonTitles; @property (nonatomic, strong) UIView *maskView; @property (nonatomic, strong) UIView *backgroundView; @property (nonatomic, strong) UIWindow *backgroundWindow; @end @implementation GKDActionSheet + (instancetype)sheetWithButtonTitles:(NSArray *)buttonTitles andCancleTitle:(NSString *)cancleTitle clicked:(GKDActionSheetBlock)clicked{ return [[self alloc] initWithButtonTitles:buttonTitles andCancleTitle:cancleTitle clicked:clicked]; } - (instancetype)initWithButtonTitles:(NSArray *)buttonTitles andCancleTitle:(NSString *)cancleTitle clicked:(GKDActionSheetBlock)clicked{ self = [super init]; if (self) { self.redButtonIndex = -1; self.cancleTitle = cancleTitle; self.buttonTitles = [[NSMutableArray alloc] initWithArray:buttonTitles]; self.clickBlock = clicked; } return self; } + (instancetype)sheetWithButtonTitles:(NSArray *)buttonTitles andCancleTitle:(NSString *)cancleTitle redButtonIndex:(NSInteger)redButtonIndex clicked:(GKDActionSheetBlock)clicked { return [[self alloc] initWithButtonTitles:buttonTitles andCancleTitle:cancleTitle redButtonIndex:redButtonIndex clicked:clicked]; } - (instancetype)initWithButtonTitles:(NSArray *)buttonTitles andCancleTitle:(NSString *)cancleTitle redButtonIndex:(NSInteger)redButtonIndex clicked:(GKDActionSheetBlock)clicked { self = [super init]; if (self) { self.redButtonIndex = redButtonIndex; self.cancleTitle = cancleTitle; self.buttonTitles = [[NSMutableArray alloc] initWithArray:buttonTitles]; self.clickBlock = clicked; } return self; } + (instancetype)sheetWithButtonTitles:(NSArray *)buttonTitles andCancleTitle:(NSString *)cancleTitle redButtonIndex:(NSInteger)redButtonIndex delegate:(id<GKDActionSheetDelegate>)delegate{ return [[self alloc]initWithButtonTitles:buttonTitles andCancleTitle:cancleTitle redButtonIndex:redButtonIndex delegate:delegate]; } - (instancetype)initWithButtonTitles:(NSArray *)buttonTitles andCancleTitle:(NSString *)cancleTitle redButtonIndex:(NSInteger)redButtonIndex delegate:(id<GKDActionSheetDelegate>)delegate{ self = [super init]; if (self) { self.redButtonIndex = redButtonIndex; self.cancleTitle = cancleTitle; self.buttonTitles = [[NSMutableArray alloc] initWithArray:buttonTitles]; self.delegate = delegate; } return self; } - (void)setUpMainView { UIView *maskView = [UIView new]; maskView.alpha = 0; maskView.userInteractionEnabled = NO; maskView.frame = CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height); maskView.backgroundColor = [UIColor blackColor]; [self addSubview:maskView]; UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismiss:)]; [maskView addGestureRecognizer:tap]; _maskView = maskView; UIView *backgroundView = [UIView new]; backgroundView.backgroundColor = [UIColor clearColor]; if (self.buttonTitles.count > 0) { for (int i = 0; i < self.buttonTitles.count; i++) { // 添加按钮 if(((NSString *)self.buttonTitles[i]).length == 0){ //为空的话就不显示 continue; } UIButton *btn = [UIButton new]; btn.tag = i; btn.backgroundColor = [UIColor whiteColor]; btn.titleLabel.font = [UIFont systemFontOfSize:17]; [btn setBackgroundImage:[self createImageWithColor:RGB(217, 217, 217)] forState:UIControlStateHighlighted]; [btn setTitle:self.buttonTitles[i] forState:UIControlStateNormal]; //红色文字 UIColor *titleColor = nil; if (i == self.redButtonIndex) { titleColor = DefalutMainColorRed; } else { titleColor = [UIColor blackColor]; } [btn setTitleColor:titleColor forState:UIControlStateNormal]; [btn addTarget:self action:@selector(didClickBtn:) forControlEvents:UIControlEventTouchUpInside]; CGFloat y = BTN_H * i; [btn setFrame:CGRectMake(0, y, SCREEN_W, BTN_H)]; [backgroundView addSubview:btn]; } } for (int i = 0; i < self.buttonTitles.count; i++) { // 分割线 if (i == 0) continue; UIView *line = [UIView new]; line.backgroundColor = [[UIColor lightGrayColor] colorWithAlphaComponent:0.6]; CGFloat y = i * BTN_H; line.frame = CGRectMake(0, y, SCREEN_W, DefaultLineWidth); [backgroundView addSubview:line]; } //放个取消按钮 UIButton *cancelBtn = [UIButton buttonWithType:UIButtonTypeCustom]; cancelBtn.tag = self.buttonTitles.count; cancelBtn.backgroundColor = [UIColor whiteColor]; cancelBtn.titleLabel.font = [UIFont systemFontOfSize:17]; [cancelBtn setTitle:self.cancleTitle forState:UIControlStateNormal]; [cancelBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]; [cancelBtn setBackgroundImage:[self createImageWithColor:RGB(217, 217, 217)] forState:UIControlStateHighlighted]; [cancelBtn addTarget:self action:@selector(didClickCancelBtn) forControlEvents:UIControlEventTouchUpInside]; CGFloat y = BTN_H * self.buttonTitles.count + 5.0f; cancelBtn.frame = CGRectMake(0, y, SCREEN_W, BTN_H); [backgroundView addSubview:cancelBtn]; CGFloat bottomH = BTN_H * self.buttonTitles.count + BTN_H + 5.0f; //放在屏幕下 [backgroundView setFrame:CGRectMake(0, SCREEN_H, SCREEN_W, bottomH)]; _backgroundView = backgroundView; self.frame = CGRectMake(0, 0, SCREEN_W, SCREEN_H); } - (void)didClickCancelBtn{ [UIView animateWithDuration:0.25 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{ //变下去 _maskView.alpha = 0; _maskView.userInteractionEnabled = NO; CGRect frame = _backgroundView.frame; frame.origin.y += frame.size.height; _backgroundView.frame = frame; } completion:^(BOOL finished) { if ([self.delegate respondsToSelector:@selector(actionSheet:didClickedButtonAtIndex:)]) { [self.delegate actionSheet:self didClickedButtonAtIndex:self.buttonTitles.count]; } __weak typeof(self) weakSelf = self; if (self.clickBlock) { self.clickBlock(weakSelf.buttonTitles.count); } self.backgroundWindow.hidden = YES; [self removeFromSuperview]; }]; } - (void)didClickBtn:(UIButton *)btn { [self dismiss:nil]; if ([self.delegate respondsToSelector:@selector(actionSheet:didClickedButtonAtIndex:)]) { [self.delegate actionSheet:self didClickedButtonAtIndex:btn.tag]; } if (self.clickBlock) { self.clickBlock(btn.tag); } } - (void)dismiss:(UITapGestureRecognizer *)tap { [UIView animateWithDuration:0.25 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{ //变下去 _maskView.alpha = 0; _maskView.userInteractionEnabled = NO; CGRect frame = _backgroundView.frame; frame.origin.y += frame.size.height; _backgroundView.frame = frame; } completion:^(BOOL finished) { self.backgroundWindow.hidden = YES; [self removeFromSuperview]; }]; } - (void)showInView:(UIView *)view { [self setUpMainView]; [self addSubview:self.backgroundView]; [view addSubview:self]; [UIView animateWithDuration:0.25 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{ //从下面冒出来 _maskView.alpha = 0.5; _maskView.userInteractionEnabled = YES; CGRect frame = _backgroundView.frame; frame.origin.y -= frame.size.height; _backgroundView.frame = frame; } completion:nil]; } - (void)show { [self setUpMainView]; self.backgroundWindow.hidden = NO; [self addSubview:self.backgroundView]; [self.backgroundWindow addSubview:self]; [UIView animateWithDuration:0.25 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{ //从下面冒出来 _maskView.alpha = 0.5; _maskView.userInteractionEnabled = YES; CGRect frame = _backgroundView.frame; frame.origin.y -= frame.size.height; _backgroundView.frame = frame; } completion:nil]; } //生成一个纯色图片 - (UIImage *)createImageWithColor:(UIColor *)color{ CGRect rect = CGRectMake(0.0f, 0.0f, 1.0f, 1.0f); UIGraphicsBeginImageContext(rect.size); CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSetFillColorWithColor(context, [color CGColor]); CGContextFillRect(context, rect); UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return image; } - (UIWindow *)backgroundWindow { if (!_backgroundWindow) { _backgroundWindow = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds]; _backgroundWindow.windowLevel = UIWindowLevelAlert; _backgroundWindow.backgroundColor = [UIColor clearColor]; _backgroundWindow.hidden = NO; } return _backgroundWindow; }
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