iOS 移动view的点击事件

要点：

• 1.Layer动画
• 2.hitTest:方法

改进的地方：

• view内各个子view的点击判断。

代码：

1.给移动view添加Layer动画

    JHBarrageView *view = [[JHBarrageView alloc] init];
    view.frame = CGRectMake(kScreenWidth, 200, 200, 50);
    [self.view addSubview:view];
    _barrageView = view;
    
    CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"position.x"];
    animation.toValue = @(view.jh_w*0.5);
    animation.duration = 10;
    animation.repeatCount = 0;
    animation.fillMode = kCAFillModeForwards;
    animation.removedOnCompletion = NO;
    animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
    [_barrageView.layer addAnimation:animation forKey:@"move"];

2.view的父类添加点击事件

    [self.view addGestureRecognizer:({
        [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(jhTap:)];
    })];

3.点击事件判断处理

- (void)jhTap:(UITapGestureRecognizer *)tap
{
    CGPoint clickPoint =  [tap locationInView:self.view];
    //判断点是否在移动的layer中，这个可以注释掉
    //if ([_barrageView.layer.presentationLayer hitTest:clickPoint]) {
        //转换点到移动view的动画layer中
        CGPoint p = [_barrageView.layer.presentationLayer convertPoint:clickPoint fromLayer:self.view.layer];
        //再进行判断
        if (CGRectContainsPoint(_barrageView.header.layer.presentationLayer.frame, p)) {
            _clickLabel.text = @"点击了头像";
        }
        else if (CGRectContainsPoint(_barrageView.nameLabel.layer.presentationLayer.frame, p)) {
            _clickLabel.text = @"点击了名字";
        }
        else if (CGRectContainsPoint(_barrageView.textLabel.layer.presentationLayer.frame, p)) {
            _clickLabel.text = @"点击了内容";
        }
    //}
}

参考：

参考一：ios捕捉移动view的点击事件
参考二：iOS 为移动中的UIView(UIButton )添加点击事件