entityMap|blocks|key|8orn1|text|尝试下面的代码|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5vsco|@Override
++++public+void+onScrollStateChanged(AbsListView+view,+int+scrollState)+{
++++++++if(scrollState+==+SCROLL_STATE_IDLE){
++++++++++++//do+your+stuff+here
++++++++}
}|code-block|syntax|javascript|a74gu^0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|I|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|J|9|@]|A|@]|B|$F|G]]|$2|H|4|-4|6|7|8|K|9|@]|A|@]|B|$]]]]

<p>try below code</p>

<pre><code>@Override
    public void onScrollStateChanged(AbsListView view, int scrollState) {
        if(scrollState == SCROLL_STATE_IDLE){
            //do your stuff here
        }
}
</code></pre>


entityMap|blocks|key|cnarj|text|找到解决方案|type|unstyled|depth|inlineStyleRanges|entityRanges|data|dmge2|++++scrollView.setOnTouchListener(new+View.OnTouchListener()+{
++++++++@Override
++++++++public+boolean+onTouch(+View+v,+MotionEvent+event+)+{
++++++++++++switch+(+event.getAction(+)+)+{
++++++++++++++++case+MotionEvent.ACTION_SCROLL:
++++++++++++++++case+MotionEvent.ACTION_MOVE:
++++++++++++++++++++Log.e(+"SCROLL",+"ACTION_SCROLL"+);
++++++++++++++++++++break;
++++++++++++++++case+MotionEvent.ACTION_DOWN:
++++++++++++++++++++Log.e(+"SCROLL",+"ACTION_DOWN"+);
++++++++++++++++++++break;
++++++++++++++++case+MotionEvent.ACTION_CANCEL:
++++++++++++++++case+MotionEvent.ACTION_UP:
++++++++++++++++++++Log.e(+"SCROLL",+"SCROLL_STOP"+);
++++++++++++++++++++break;
++++++++++++}
++++++++++++return+false;
++++++++}
++++});|code-block|syntax|javascript|835ue^0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|I|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|J|9|@]|A|@]|B|$F|G]]|$2|H|4|-4|6|7|8|K|9|@]|A|@]|B|$]]]]

<p>Find the solution</p>

<pre><code>    scrollView.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch( View v, MotionEvent event ) {
            switch ( event.getAction( ) ) {
                case MotionEvent.ACTION_SCROLL:
                case MotionEvent.ACTION_MOVE:
                    Log.e( "SCROLL", "ACTION_SCROLL" );
                    break;
                case MotionEvent.ACTION_DOWN:
                    Log.e( "SCROLL", "ACTION_DOWN" );
                    break;
                case MotionEvent.ACTION_CANCEL:
                case MotionEvent.ACTION_UP:
                    Log.e( "SCROLL", "SCROLL_STOP" );
                    break;
            }
            return false;
        }
    });
</code></pre>


entityMap|blocks|key|f8fsi|text|尽管这个问题有点老了，而且ScrollView也没有用到，但我不得不实现一些与此相关的东西，我使用的是NestedScrollView+per+recommendation和Kotlin。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|7l82g|如果你使用的是Java，这是不可能的，或者是“干净”的，你需要创建静态的util方法，而使用Kotlin，你可以做如下所示的扩展函数。如果您使用的是ScrollView，只需将您在此处看到的内容从NestedScrollView更改为ScrollView即可。|dj7t7|我将展示两种实现此功能的方法：|bglgu|首先，创建NestedScrollViewExtensions.kt文件：|khrk|1.|71qjs|如果您想要一个简化的(我首选的)版本，只需将此代码片段添加到您的NestedScrollViewExtensions.kt文件中：|68e3k|fun+NestedScrollView.onScrollStateChanged(startDelay:+Long+=+100,+stopDelay:+Long+=+400,+listener:+(Boolean)+->+Unit)+{
++++setOnTouchListener+{+_,+event+->
++++++++when+(event.action)+{
++++++++++++MotionEvent.ACTION_SCROLL,+MotionEvent.ACTION_MOVE+->+{
++++++++++++++++handler.postDelayed({
++++++++++++++++++++listener.invoke(true)
++++++++++++++++},+startDelay)
++++++++++++}

++++++++++++MotionEvent.ACTION_CANCEL,+MotionEvent.ACTION_UP+->+{
++++++++++++++++handler.postDelayed({
++++++++++++++++++++listener.invoke(false)
++++++++++++++++},+stopDelay)
++++++++++++}
++++++++}
++++++++false+//+Do+not+consume+events
++++}
}|code-block|syntax|javascript|1g1to|通过这种方式，实现更加清晰：|13kh3|++++++++scroll_view.onScrollStateChanged+{+isScrolling+->+
++++++++++++if(isScrolling)+fab.shrink()+else+fab.extend()
++++++++}|b9dcm|2|btnt9|和不太干净的方式|eukal|interface+NestedViewScrollChangedListener+{
++++fun+onScrollStart()

++++fun+onScrollStop()
}

@SuppressLint("ClickableViewAccessibility")
fun+NestedScrollView.onScrollStateChanged(listener:+NestedViewScrollChangedListener)+{
++++this.setOnTouchListener+{+_,+event+->
++++++++when(event.action)+{
++++++++++++MotionEvent.ACTION_SCROLL,+MotionEvent.ACTION_MOVE+->+{
++++++++++++++++handler.postDelayed({
++++++++++++++++++++listener.onScrollStart()
++++++++++++++++},+100)
++++++++++++}

++++++++++++MotionEvent.ACTION_CANCEL,+MotionEvent.ACTION_UP+->+{
++++++++++++++++handler.postDelayed({
++++++++++++++++++++listener.onScrollStop()
++++++++++++++++},+400)
++++++++++++}
++++++++}
++++++++false+//+Don't+consume+touch+events
++++}
}|9j6l4|在这里，我使用了一个简单的延迟，这对我来说很有效，因为我需要一个动画发生，你可以随意删除所有的handler.postDelay()并直接调用监听器。|16jr7|NestedViewScrollChangedListener上面的接口需要这样实现：|7nk9i|scroll_view.onScrollStateChanged(object+:+NestedViewScrollChangedListener+{
++++++++++++override+fun+onScrollStart()+{
++++++++++++++++fab.shrink()
++++++++++++}

++++++++++++override+fun+onScrollStop()+{
++++++++++++++++fab.extend()
++++++++++++}
++++++++})|8q9m5|祝你好运:)|f96tt^0|D|A|1F|G|0|22|A|2Q|G|39|A|0|0|5|T|0|0|W|T|0|0|0|0|0|0|0|1B|J|0|0|V|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|1E|9|@$A|1F|B|1G|C|D]|$A|1H|B|1I|C|D]]|E|@]|F|$]]|$2|G|4|H|6|7|8|1J|9|@$A|1K|B|1L|C|D]|$A|1M|B|1N|C|D]|$A|1O|B|1P|C|D]]|E|@]|F|$]]|$2|I|4|J|6|7|8|1Q|9|@]|E|@]|F|$]]|$2|K|4|L|6|7|8|1R|9|@$A|1S|B|1T|C|D]]|E|@]|F|$]]|$2|M|4|N|6|7|8|1U|9|@]|E|@]|F|$]]|$2|O|4|P|6|7|8|1V|9|@$A|1W|B|1X|C|D]]|E|@]|F|$]]|$2|Q|4|R|6|S|8|1Y|9|@]|E|@]|F|$T|U]]|$2|V|4|W|6|7|8|1Z|9|@]|E|@]|F|$]]|$2|X|4|Y|6|S|8|20|9|@]|E|@]|F|$T|U]]|$2|Z|4|10|6|7|8|21|9|@]|E|@]|F|$]]|$2|11|4|12|6|7|8|22|9|@]|E|@]|F|$]]|$2|13|4|14|6|S|8|23|9|@]|E|@]|F|$T|U]]|$2|15|4|16|6|7|8|24|9|@$A|25|B|26|C|D]]|E|@]|F|$]]|$2|17|4|18|6|7|8|27|9|@$A|28|B|29|C|D]]|E|@]|F|$]]|$2|19|4|1A|6|S|8|2A|9|@]|E|@]|F|$T|U]]|$2|1B|4|1C|6|7|8|2B|9|@]|E|@]|F|$]]|$2|1D|4|-4|6|7|8|2C|9|@]|E|@]|F|$]]]]

<p>Even though this question is a little old and <code>ScrollView</code> are not as used, I had to implement something related to this, I'm using a <code>NestedScrollView</code> per recommendation and Kotlin.</p>

<p>If you are using Java this won't be possible or as 'clean', you would need to create static util methods instead, with Kotlin you can do extension functions as shown.
If you are using a <code>ScrollView</code> just change what you see here from <code>NestedScrollView</code> to <code>ScrollView</code>.</p>

<h3>I'll show two ways to implement this:</h3>

<p>First, create your <code>NestedScrollViewExtensions.kt</code> file:</p>

<h1>1.</h1>

<p>If you want a simplified (my preferred) version just add this snippet to your <code>NestedScrollViewExtensions.kt</code> file:</p>

<pre><code>
fun NestedScrollView.onScrollStateChanged(startDelay: Long = 100, stopDelay: Long = 400, listener: (Boolean) -&gt; Unit) {
    setOnTouchListener { _, event -&gt;
        when (event.action) {
            MotionEvent.ACTION_SCROLL, MotionEvent.ACTION_MOVE -&gt; {
                handler.postDelayed({
                    listener.invoke(true)
                }, startDelay)
            }

            MotionEvent.ACTION_CANCEL, MotionEvent.ACTION_UP -&gt; {
                handler.postDelayed({
                    listener.invoke(false)
                }, stopDelay)
            }
        }
        false // Do not consume events
    }
}
</code></pre>

<p>This way the implementation is cleaner:</p>

<pre><code>
        scroll_view.onScrollStateChanged { isScrolling -&gt; 
            if(isScrolling) fab.shrink() else fab.extend()
        }

</code></pre>

<h1>2</h1>

<p>And the not so clean way</p>

<pre><code>
interface NestedViewScrollChangedListener {
    fun onScrollStart()

    fun onScrollStop()
}

@SuppressLint("ClickableViewAccessibility")
fun NestedScrollView.onScrollStateChanged(listener: NestedViewScrollChangedListener) {
    this.setOnTouchListener { _, event -&gt;
        when(event.action) {
            MotionEvent.ACTION_SCROLL, MotionEvent.ACTION_MOVE -&gt; {
                handler.postDelayed({
                    listener.onScrollStart()
                }, 100)
            }

            MotionEvent.ACTION_CANCEL, MotionEvent.ACTION_UP -&gt; {
                handler.postDelayed({
                    listener.onScrollStop()
                }, 400)
            }
        }
        false // Don't consume touch events
    }
}
</code></pre>

<p>In here I'm using a simple delay that works for me as I need to have an animation happen, feel free to remove all the <code>handler.postDelay()</code> and call the listener directly. </p>

<p>The interface above <code>NestedViewScrollChangedListener</code> needs to be implemented like this:</p>

<pre><code>
scroll_view.onScrollStateChanged(object : NestedViewScrollChangedListener {
            override fun onScrollStart() {
                fab.shrink()
            }

            override fun onScrollStop() {
                fab.extend()
            }
        })

</code></pre>

<p>Good luck :)</p>


entityMap|blocks|key|elqsc|text|在kotlin中，您可以使用以下代码|type|unstyled|depth|inlineStyleRanges|entityRanges|data|66pjm|inline+fun+NestedScrollView.scrollState(crossinline+idle:+()+->+Unit,+crossinline+scrolled:+()+->+Unit)+{
++++setOnTouchListener+{+_,+event+->
++++++++when+(event.action)+{
++++++++++++MotionEvent.ACTION_SCROLL,
++++++++++++MotionEvent.ACTION_MOVE,
++++++++++++MotionEvent.ACTION_DOWN+->+{
++++++++++++++++scrolled()
++++++++++++}
++++++++++++MotionEvent.ACTION_CANCEL,
++++++++++++MotionEvent.ACTION_UP+->+{
++++++++++++++++idle()
++++++++++++}
++++++++}
++++++++false
++++}
}|code-block|syntax|javascript|44fii^0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|I|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|J|9|@]|A|@]|B|$F|G]]|$2|H|4|-4|6|7|8|K|9|@]|A|@]|B|$]]]]

<p>in kotlin you can use this</p>

<pre><code>inline fun NestedScrollView.scrollState(crossinline idle: () -&gt; Unit, crossinline scrolled: () -&gt; Unit) {
    setOnTouchListener { _, event -&gt;
        when (event.action) {
            MotionEvent.ACTION_SCROLL,
            MotionEvent.ACTION_MOVE,
            MotionEvent.ACTION_DOWN -&gt; {
                scrolled()
            }
            MotionEvent.ACTION_CANCEL,
            MotionEvent.ACTION_UP -&gt; {
                idle()
            }
        }
        false
    }
}
</code></pre>


<p>I was trying to hide a button during scroll view is in idle state.the button should be invisible only during scrolling time.(Rest of the time button should be visible)</p>

<pre><code>scrollView.setOnScrollChangeListener(new ScrollView.OnScrollChangeListener() {
    @Override
    public void onScrollChange(View v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {
        if (scrollX == scrollY)  {
            Button.setVisibility(View.VISIBLE);
        } else if ((scrollY &gt; oldScrollY)) {
            Button.setVisibility(View.INVISIBLE);
        }
    }
});
</code></pre>


How to detect whether Android Scroll view is in idle state?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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问如何检测Android滚动视图是否处于空闲状态？
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问如何检测Android滚动视图是否处于空闲状态？EN