效果圖
前言: 在這篇文章中你可以學(xué)到什么? Masonry布局, Block 以及動畫, 俗稱的懶加載. (想了解的看一看). 0.-
tableViewCell布局篇--為方便大家查看, 我會盡量貼出全部代碼
/**< typedef block >*/
typedef void(^btnPulsBlock)(NSInteger count, BOOL animated);
@interface XTFoodCell : UITableViewCell
@property (nonatomic, strong) UIImageView *foodImage; // cyan
@property (nonatomic, strong) UILabel *nameLabel; // orange
@property (nonatomic, strong) UILabel *priceLabel; // gray
@property (nonatomic, strong) UIButton *btnMinus; // black
@property (nonatomic, strong) UIButton *btnPlus; // black
@property (nonatomic, strong) UILabel *orderCount; // red
@property (nonatomic, copy) btnPulsBlock block; // block
@property (nonatomic, strong) UIImageView *animateView; // 購物車圖標(biāo)
@property (nonatomic, assign) NSInteger numCount; // 計數(shù)器
@end
.m 實(shí)現(xiàn)篇
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
[self createSubviews];
}
return self;
}
- (void)createSubviews
{
[self.contentView addSubview:self.foodImage];
[self.contentView addSubview:self.nameLabel];
[self.contentView addSubview:self.priceLabel];
[self.contentView addSubview:self.btnMinus];
[self.contentView addSubview:self.btnPlus];
[self.contentView addSubview:self.orderCount];
}
- (UIImageView *)foodImage
{
if (!_foodImage) {
_foodImage = [[UIImageView alloc] init];
}
return _foodImage;
}
- (UILabel *)nameLabel
{
if (!_nameLabel) {
_nameLabel = [[UILabel alloc] init];
}
return _nameLabel;
}
- (UILabel *)priceLabel
{
if (!_priceLabel) {
_priceLabel = [[UILabel alloc] init];
}
return _priceLabel;
}
- (UIButton *)btnMinus
{
if (!_btnMinus) {
_btnMinus = [UIButton buttonWithType:UIButtonTypeCustom];
}
return _btnMinus;
}
- (UIButton *)btnPlus
{
if (!_btnPlus) {
_btnPlus = [UIButton buttonWithType:UIButtonTypeCustom];
}
return _btnPlus;
}
- (UILabel *)orderCount
{
if (!_orderCount) {
_orderCount = [[UILabel alloc] init];
}
return _orderCount;
}
UI布局篇--Masonry
- (void)layoutSubviews
{
[super layoutSubviews];
[_foodImage mas_makeConstraints:^(MASConstraintMaker *make) {
make.top.equalTo(self.contentView.mas_top).with.offset(5.0);
make.left.equalTo(self.contentView.mas_left).with.offset(5.0);
make.width.equalTo(@88.0);
make.height.equalTo(@88.0);
}];
self.foodImage.backgroundColor = [UIColor cyanColor];
[_nameLabel mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(self.foodImage.mas_right).with.offset(5.0);
make.top.equalTo(self.contentView.mas_top).with.offset(5.0);
make.right.equalTo(self.contentView.mas_right).with.offset(-5.0);
make.height.equalTo(@30);
}];
self.nameLabel.backgroundColor = [UIColor orangeColor];
[_priceLabel mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(_nameLabel);
make.width.equalTo(@50.0);
make.height.equalTo(@30);
make.bottom.equalTo(self.contentView.mas_bottom).with.offset(-5.0);
}];
self.priceLabel.backgroundColor = [UIColor lightGrayColor];
[_btnMinus mas_makeConstraints:^(MASConstraintMaker *make) {
make.centerX.equalTo(_nameLabel);
make.centerY.equalTo(self.contentView);
make.width.height.mas_equalTo(CGSizeMake(25, 25));
}];
self.btnMinus.backgroundColor = [UIColor blackColor];
[_orderCount mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(_btnMinus.mas_right).with.offset(10);
make.centerY.equalTo(self.contentView);
make.width.height.mas_equalTo(CGSizeMake(35, 25));
}];
self.orderCount.backgroundColor = [UIColor redColor];
[self.btnPlus mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.equalTo(_orderCount.mas_right).with.offset(10);
make.centerY.equalTo(self.contentView);
make.width.height.mas_equalTo(CGSizeMake(25, 25));
}];
self.btnPlus.backgroundColor = [UIColor blackColor];
[_btnMinus setTitle:@"減" forState:UIControlStateNormal];
[_btnMinus addTarget:self action:@selector(clickMin:) forControlEvents:UIControlEventTouchUpInside];
_btnMinus.hidden = YES;
[_btnPlus setTitle:@"加" forState:UIControlStateNormal];
[_btnPlus addTarget:self action:@selector(clickPuls:) forControlEvents:UIControlEventTouchUpInside];
}
btn點(diǎn)擊方法--
- (void)clickPuls:(UIButton *)btn
{
self.numCount += 1;
self.block(self.numCount, YES);
[self showOrderNums:self.numCount];
}
- (void)clickMin:(UIButton *)btn
{
self.numCount -= 1;
self.block(self.numCount, NO);
[self showOrderNums:self.numCount];
}
VC篇-- 這里給出cellForRowAtIndexPath中代碼
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
XTFoodCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier forIndexPath:indexPath];
// Block 回調(diào)
__weak __typeof(&*cell) weakCell = cell;
cell.block = ^(NSInteger nCount, BOOL boo){
CGRect parentRect = [weakCell convertRect:weakCell.btnPlus.frame toView:self.view];
if (boo) {
// 這里是動畫開始的方法
[self joinCartAnimationWithRect:parentRect];
}
else
{
}
};
return cell;
}
#pragma mark -加入購物車動畫
-(void) joinCartAnimationWithRect:(CGRect)rect
{
_endPoint_x = 35;
_endPoint_y = Screen_height - 35;
CGFloat startX = rect.origin.x;
CGFloat startY = rect.origin.y;
_path= [UIBezierPath bezierPath];
[_path moveToPoint:CGPointMake(startX, startY)];
//三點(diǎn)曲線
[_path addCurveToPoint:CGPointMake(_endPoint_x, _endPoint_y)
controlPoint1:CGPointMake(startX, startY)
controlPoint2:CGPointMake(startX - 180, startY - 200)];
_dotLayer = [CALayer layer];
_dotLayer.backgroundColor = [UIColor purpleColor].CGColor;
_dotLayer.frame = CGRectMake(0, 0, 20, 20);
_dotLayer.cornerRadius = 5;
[self.view.layer addSublayer:_dotLayer];
[self groupAnimation];
}
#pragma mark - 組合動畫
-(void)groupAnimation
{
CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:@"position"];
animation.path = _path.CGPath;
animation.rotationMode = kCAAnimationRotateAuto;
CABasicAnimation *alphaAnimation = [CABasicAnimation animationWithKeyPath:@"alpha"];
alphaAnimation.duration = 0.5f;
alphaAnimation.fromValue = [NSNumber numberWithFloat:1.0];
alphaAnimation.toValue = [NSNumber numberWithFloat:0.1];
alphaAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
CAAnimationGroup *groups = [CAAnimationGroup animation];
groups.animations = @[animation,alphaAnimation];
groups.duration = 0.8f;
groups.removedOnCompletion = NO;
groups.fillMode = kCAFillModeForwards;
groups.delegate = self;
[groups setValue:@"groupsAnimation" forKey:@"animationName"];
[_dotLayer addAnimation:groups forKey:nil];
[self performSelector:@selector(removeFromLayer:) withObject:_dotLayer afterDelay:0.8f];
}
- (void)removeFromLayer:(CALayer *)layerAnimation{
[layerAnimation removeFromSuperlayer];
}
CAAnimationDelegate--
#pragma mark - CAAnimationDelegate
- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag
{
if ([[anim valueForKey:@"animationName"]isEqualToString:@"groupsAnimation"]) {
CABasicAnimation *shakeAnimation = [CABasicAnimation animationWithKeyPath:@"transform.scale"];
shakeAnimation.duration = 0.25f;
shakeAnimation.fromValue = [NSNumber numberWithFloat:0.9];
shakeAnimation.toValue = [NSNumber numberWithFloat:1];
shakeAnimation.autoreverses = YES;
// 這里是下方的自定義View上面 放的btn. 自己隨便定義一個 0.-
[_shopCartView.btnBackImg.layer addAnimation:shakeAnimation forKey:nil];
}
基本就是全部代碼了. Demo下載
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說明: 以下文章均在簡書平臺發(fā)布. 可點(diǎn)擊我的主頁查看全部. O.-
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