向上弹动时，不会为CoordinatorLayout中的NestedScrollView触发onNestedFling或onNestedPreFling行为回调。但是，当我向下飞行时，它们会被触发。任何已知问题？
当我用RecyclerView替换NestedScrollView时，会触发上述回调。
只是为了澄清，自定义行为类是：
public class DummyBehavior extends CoordinatorLayout.Behavior<View> {
public DummyBehavior() {
}
public DummyBehavior(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
public boolean onStartNestedScroll(CoordinatorLayout coordinatorLayout, View child, View directTargetChild, View target, int nestedScrollAxes) {
Log.i("onStartNestedScroll", "true");
return true;
}
@Override
public boolean onNestedPreFling(CoordinatorLayout coordinatorLayout, View child, View target, float velocityX, float velocityY) {
Log.i("onNestedPreFling", "true");
return super.onNestedPreFling(coordinatorLayout, child, target, velocityX, velocityY);
}
@Override
public boolean onNestedFling(CoordinatorLayout coordinatorLayout, View child, View target, float velocityX, float velocityY, boolean consumed) { …android android-recyclerview android-coordinatorlayout android-nestedscrollview
我试图在html文档上执行xpath操作.我想做一个两级xpath查询.html文档"index.html"如下:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<div class="head">
<div class="area">
<div class="value">10</div>
</div>
<div class="area">
<div class="value">20</div>
</div>
<div class="area">
<div class="value">30</div>
</div>
</div>
</body>
</html>
我想首先使用class ="area"获取所有div,然后使用Gokogiri在golang中使用class ="value"递归获取div.
我的代码如下:package main
import (
"fmt"
"io/ioutil"
"github.com/moovweb/gokogiri"
"github.com/moovweb/gokogiri/xpath"
)
func main() {
content, _ := ioutil.ReadFile("index.html")
doc, _ := gokogiri.ParseHtml(content)
defer doc.Free()
xps := xpath.Compile("//div[@class='head']/div[@class='area']")
xpw := xpath.Compile("//div[@class='value']")
ss, _ := doc.Root().Search(xps)
for _, s := range ss {
ww, _ := s.Search(xpw)
for _, w …