// 可以拖动tag
tagView.enableMove = YES; 
// 启用点击
tagView.enableTapGesture = YES;
// 启用长按
tagView.enableLongGesture = YES;

// 设置标签朝向
tagView.direction = AJTagDirectionLeft; 
// 背景色
tagView.backgroundColor = color;
// 标签原点颜色
tagView.pointColor = color;
// 标签原点阴影颜色
tagView.pointShadowColor = color;
// 标签字体
tagView.font = [UIFont systemFontOfSize:18];
// 单独设置text
tagView.text = @"test";

// 给tag添加自定义点击事件
self.imageView.userInteractionEnabled = YES;
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(changeTagViewStyle:)];
tagView.tapGestureRecognizer = tap;

// 获取图片上tag的点
[self.imageView.subviews enumerateObjectsUsingBlock:^(__kindof UIView * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
    if ([obj isKindOfClass:[AJTagView class]]) {
        CGPoint point = [((AJTagView *)obj) getTagPointPercent];
        NSLog(@"%@",NSStringFromCGPoint(point));
    }
}];