之前公司一直在搞直播,需要弄送礼物动画,当时也不知道怎么做,本人也是小白一个,在网上找demo学习,现在把我学到的总结一下.
效果图:
Snip20161227_15.png
送鲜花参考http://www.jianshu.com/p/ca1e7cdafa48
送豪车是用关键帧动画,关键帧动画可以参考http://www.jianshu.com/p/a071bba99a1b
下面是代码:
- (void)animation {
[UIView animateKeyframesWithDuration:4.0f delay:0.2 options:0 animations:^{
__block CGPoint center = self.center;
[UIView addKeyframeWithRelativeStartTime:0 relativeDuration:1.0/4 animations:^{
self.transform = CGAffineTransformMakeScale(2, 2);
}];
[UIView addKeyframeWithRelativeStartTime:0 relativeDuration:1.5/4 animations:^{
self.center = (CGPoint){center.x + [UIScreen mainScreen].bounds.size.width / 2 - 50, center.y + 200};
}];
[UIView addKeyframeWithRelativeStartTime:1.5/4 relativeDuration:2.5/4 animations:^{
self.center = (CGPoint){center.x + center.x + [UIScreen mainScreen].bounds.size.width / 2 - 40, center.y + 210};
}];
[UIView addKeyframeWithRelativeStartTime:2.5/4 relativeDuration:3.5/4 animations:^{
self.center = (CGPoint){center.x + [UIScreen mainScreen].bounds.size.width -50, center.y + 260};
}];
[UIView addKeyframeWithRelativeStartTime:3.5/4 relativeDuration:4.0/4 animations:^{
self.center = (CGPoint){center.x + [UIScreen mainScreen].bounds.size.width + 50, center.y + 270};
}];
} completion:^(BOOL finished) {
NSLog(@"删除动画");
[self removeFromSuperview];
}];
}
直播点赞,粒子动画,代码:
-(CAEmitterLayer *)emitterLayer {
if (_emitterLayer == nil) {
_emitterLayer = [CAEmitterLayer layer];
//发射器在xy轴上的位置
_emitterLayer.emitterPosition = CGPointMake(self.view.frame.size.width - 50, self.view.frame.size.height - 50);
//发射器的尺寸大小
_emitterLayer.emitterSize = CGSizeMake(20, 20);
//渲染模式
_emitterLayer.renderMode = kCAEmitterLayerUnordered;
_emitterLayer.emitterShape = kCAEmitterLayerPoint;
//创建保存粒子的数组
NSMutableArray *array = [NSMutableArray array];
//创建粒子
for (int i = 0; i < 10; ++i) {
//发射单元
CAEmitterCell *stepCell = [CAEmitterCell emitterCell];
//粒子创建速率 默认1/s
stepCell.birthRate = 1;
//粒子存活时间
stepCell.lifetime = arc4random_uniform(4) + 1;
//粒子的生存时间容差
stepCell.lifetimeRange = 1.5;
//粒子的内容
UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"good%d_30x30",i]];
stepCell.contents = (id)image.CGImage;
//粒子的名字
stepCell.name = [NSString stringWithFormat:@"%d",i];
//粒子的运动速率
stepCell.velocity = arc4random_uniform(100) + 100;
//粒子速度的容差
stepCell.velocityRange = 80;
//粒子在xy平面的发射角度
stepCell.emissionLongitude = M_PI + M_PI_2;
//粒子发射角度容差
stepCell.emissionRange = M_PI_2/6;
//缩放比例
stepCell.scale = 0.3;
//添加到数组中
[array addObject:stepCell];
}
//将粒子数组放入发射器中
_emitterLayer.emitterCells = array;
//将发射器添加到父类视图
[self.view.layer addSublayer:_emitterLayer];
}
return _emitterLayer;
}
在下小白一个,以此在记录个人的成长,希望跟大家一起共同学习.
