的onClick方法不能正常工作后NestedScrollView滚动 [英] onClick method not working properly after NestedScrollView scrolled
问题描述
我用NestedScrollView与CoordinatorLayout，使滚动动画工具栏。（由应用程序：layout_scrollFlags =滚动| enterAlways）
NestedScrollView包含的LinearLayout作为根的孩子，我把2 TextViews到LinearLayout中，使展开/折叠动画。一个设置可见 而另一个被设置为不见了。而通过的LinearLayout的onClick事件切换的知名度。
通常情况下，一切都按预期方式工作，但是当我滚动的NestedScrollView onClick事件不能正常工作。我需要滚动后双击即可得到展开/折叠动画
有没有人有同样的问题我吗？请帮我
＆LT; android.support.design.widget.CoordinatorLayout的xmlns：机器人=http://schemas.android.com/apk/res/android
的xmlns：程序=http://schemas.android.com/apk/res-auto
机器人：layout_width =match_parent
机器人：layout_height =match_parent＆GT;
＆LT; android.support.v4.widget.NestedScrollView
机器人：layout_width =match_parent
机器人：layout_height =match_parent
应用程序：layout_behavior =@字符串/ appbar_scrolling_view_behavior＆GT;
＆LT;的LinearLayout
机器人：layout_width =match_parent
机器人：layout_height =match_parent
机器人：方向=垂直
机器人：paddingBottom会=98dp
机器人：以下属性来=24dp
机器人：paddingRight =24dp＆GT;
＆LT; android.support.v7.widget.AppCompatTextView
机器人：ID =@ + ID / detail_expense_reason_trim
机器人：layout_width =match_parent
机器人：layout_height =WRAP_CONTENT
机器人：单线=假
机器人：文字颜色=@色/ add_new_expense_text_color/＆GT;
＆LT; android.support.v7.widget.AppCompatTextView
机器人：ID =@ + ID / detail_expense_reason
机器人：layout_width =match_parent
机器人：layout_height =WRAP_CONTENT
机器人：单线=假
机器人：文字颜色=@色/ add_new_expense_text_color
机器人：能见度=水涨船高/＆GT;
＆LT; / LinearLayout中＆GT;
＆LT; /android.support.v4.widget.NestedScrollView>
＆LT; android.support.design.widget.AppBarLayout
机器人：layout_width =match_parent
机器人：layout_height =WRAP_CONTENT＆GT;
＆LT; android.support.v7.widget.Toolbar
机器人：ID =@ + ID / detail_expense_toolbar
机器人：layout_width =match_parent
机器人：layout_height =？ATTR / actionBarSize
机器人：主题=@风格/ ThemeOverlay.AppCompat.Dark.ActionBar
应用程序：layout_scrollFlags =滚动| enterAlways
应用程序：popupTheme =@风格/ ThemeOverlay.AppCompat.Light/＆GT;
＆LT; /android.support.design.widget.AppBarLayout>
@InjectView（R.id.detail_expense_reason）
AppCompatTextView originalReason;
@InjectView（R.id.detail_expense_reason_trim）
AppCompatTextView trimReason;
@InjectView（R.id.detail_expense_container）
的LinearLayout expenseContainer;
//处理事件
公共无效的onClick（）{
如果（originalReason.getVisibility（）== View.VISIBLE）{
originalReason.setVisibility（View.GONE）;
trimReason.setVisibility（View.VISIBLE）;
} 其他 {
originalReason.setVisibility（View.VISIBLE）;
trimReason.setVisibility（View.GONE）;
}
}
这是NestedScrollView的一个bug，该bug的详细信息可以在这里找到：的问题。问题是， mScroller.isFinished（）在 onInterceptTouchEvent（MotionEvent EV）将不会返回真正的后一扔操作（即使一扔已停止）。因此，触摸事件截获。
这个错误已经报道了一段时间，但仍然没有得到解决。所以我通过自己的版本的bug修复这个问题产生。我实现了我自己的 NestedScrollView ，复制所有的code从 NestedScrollView ，并具有与如下修改：
公共类NestedScrollView扩展的FrameLayout实现NestedScrollingParent，NestedScrollingChild {
...
私人无效initScrollView（）{
...
//替换这行：
// mScroller =新ScrollerCompat（的getContext（），NULL）;
mScroller = ScrollerCompat.create（的getContext（），NULL）;
...
}
@覆盖
公共布尔onInterceptTouchEvent（MotionEvent EV）{
...
开关（行动及放大器; MotionEventCompat.ACTION_MASK）{
...
案例MotionEvent.ACTION_DOWN：{
...
//替换这行：
// mIsBeingDragged = mScroller.isFinished（）！;
mIsBeingDragged = FALSE;
...
}
}
}
}
和本 NestedScrollView 应具有相同的行为与原来的。
I used NestedScrollView with CoordinatorLayout to enable scroll animation for Toolbar (by app:layout_scrollFlags="scroll|enterAlways").
NestedScrollView contain the LinearLayout as the root child, I put the 2 TextViews into LinearLayout to enable expand/collapse animation. The one was set Visible and other one was set to Gone. And switching visibility by onClick event of LinearLayout
Normally, everything work as expected but when I scrolled the NestedScrollView the onClick event not working properly. I need double click after scroll to get expand/collapse animation
Does anyone have same problem with me ? Please help me
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="98dp"
android:paddingLeft="24dp"
android:paddingRight="24dp">
<android.support.v7.widget.AppCompatTextView
android:id="@+id/detail_expense_reason_trim"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:singleLine="false"
android:textColor="@color/add_new_expense_text_color" />
<android.support.v7.widget.AppCompatTextView
android:id="@+id/detail_expense_reason"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:singleLine="false"
android:textColor="@color/add_new_expense_text_color"
android:visibility="gone" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.Toolbar
android:id="@+id/detail_expense_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
</android.support.design.widget.AppBarLayout>
@InjectView(R.id.detail_expense_reason)
AppCompatTextView originalReason;
@InjectView(R.id.detail_expense_reason_trim)
AppCompatTextView trimReason;
@InjectView(R.id.detail_expense_container)
LinearLayout expenseContainer;
// Handle event
public void onClick() {
if (originalReason.getVisibility() == View.VISIBLE) {
originalReason.setVisibility(View.GONE);
trimReason.setVisibility(View.VISIBLE);
} else {
originalReason.setVisibility(View.VISIBLE);
trimReason.setVisibility(View.GONE);
}
}
It is a bug of the NestedScrollView, the detail of the bug can be found in here: issue. The problem is that mScroller.isFinished() in onInterceptTouchEvent(MotionEvent ev) will not return true after a fling operation (even if the fling is stopped). Therefore the touch event is intercepted.
This bug have been reported for a while, but still have not been fixed. So I have created by own version of bug fix for this problem. I implemented my own NestedScrollView, copied all the code from NestedScrollView and having the with the following amendments:
public class NestedScrollView extends FrameLayout implements NestedScrollingParent, NestedScrollingChild {
...
private void initScrollView() {
...
// replace this line:
// mScroller = new ScrollerCompat(getContext(), null);
mScroller = ScrollerCompat.create(getContext(), null);
...
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
...
switch (action & MotionEventCompat.ACTION_MASK) {
...
case MotionEvent.ACTION_DOWN: {
...
// replace this line:
// mIsBeingDragged = !mScroller.isFinished();
mIsBeingDragged = false;
...
}
}
}
}
And this NestedScrollView should have the same behaviour as the original one.
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