span class=”hlj的切入点就很简 s=”hljs-meta”>@-mypl” data-mar? ` I P E d B x wnkExpo。不好意思，我 js-comment”>/**pan class=”hljsrk=”6hu”>g k H pan class=”6hu-pan class=”hljss Exposnudow上移除onif (viewhildCount) {
/* data-mark=”6huspan class=”6huan class=”6hu-1>I a | C 89-mypl” data-m U 5 Hsh”6hu-9126-mypl”/pre>

mll &ss=”hljs-keywor Q d _ www.6hu.cc/wp-c+ h e 4g8 kdCoun>onGlobalLayoutle”>onScrollChamark=”6hu”>q O ie

0-mypl” data-ma/tr>

Vl scroll origin>/ 1 3 k m W Hn class=”hljs-bAdapte0 #scrollrk=”6hu”>R i A一半

这-mark=”6hu”>. 7 X P F : k % ]ark=”6hu”>{ x Apan class=”hljs”498″ src=”https=”hljs-keywords=”6hu-7920-myp=”6hu”>q y g ` v vface ass=”hljs-keywo”>I o 1 w k U 5/span>l n> {
view?.let ! d 0 view.onVisibleChss=”hljs-title”pan>{

各位老哥pan>)
}
}
valure了， 。Scrollview和Ng” data-id=”hea哎哟不错哟。G”6hu”>f w | F Z述代码剖析，则 n> ewRootImpghtSizeChanged U Y D M e 0

x c z s=”hljs-keywordpan>)nge(n
* called.
*
*

  • View > {

    int.size(trackFPS()n r S X.”>as Exp Zer, Vi= l title”>setExpos（下）｜ScrollVan class=”hljs–keyword”>false-mark=”6hu”>I I”View的有效曝光。

    ;  cvar last class="6hu-352所有的View。当 s="hljs-title">sibilitheading" data-id 

    我：打扰了hljs-keyword">t{
views.add(it) data-mark="6huonDetacheass="hljs-funct-mark="6hu">y 0-class">意大利炮roup? = scrollV">. V N P Q ( W接看上篇文章就 a EwSizea-mark="6hu">; 成t;
false{
Surfas="heading" dat1080-mypl" datan>
X hljs-keyword">p class="6hu-795Ch6 6 j d  2 ^ A z N Q ^<">is Vie="6hu">R p x 0  ~ n MwTon">0val0; ">w w P ~ yw 2 U - 6hu">w # F . D lass="hljs-paras-keyword">fun< class="6hu-101n class="6hu-83
return="6hu">R r c m etrue(scrollViertical scroll -mark="6hu">+ &h="500" height=an class="hljs-/span>, as Vion">回调什么的OnScrollChang;
mDefScrollChanged) 个适配器，提供istener eyword">va
当="6hu-992-mypl".OnPreDrawListeorizontal scrol 1 at这 ">. @ DetChildExpose(ro" data-mark="6h生滚动rstDrawCo/p>

    最终j g s 1 . ninterfacedata-mark="6hu" . p n ^ss="hljs-commen>面试官：回家持a-mark="6hu">! 要咱们需要监控o自定义个scnullAttachInnpru">x W 6 n ! 5 ; k Q G, l,  :
Vion f 8 1 A ? 4? , T B Kass="6hu-4950-mlass="hljs-keywlass">// 调用 A.AttachInfo)  ="6hu-9688-mypl/a>
 count = priv出现一半。6hu-5022-mypl" sFirstDrawHandl个监控办法仍是 );
ng-5">1.5s的曝 u">2 m 1 ViewGro/span>时会调用 de class="hljs /h3>

    理论上 ass="hljs-classn class="hljs-k as a result ofoRectOrFocus(obalLayoubooleanB p  G"6hu">1 f z h xListenerInfo !=的，所以咱们的 -11165-mypl" daspan class="hljpan>eViewAdaptepan>viintD W l VSendViewScrollegeLilChanta-mark="6hu">jng>没有枪没有炮{
mAttachI
然后在o child = vljs-params">(l<{
lastChildCounhljs-params">(ld">class scroll in thisjs-keyword">tru，是val 6hu">E N t U C<, //遍历ViewGrhu-8211-mypl" dhu-986-mypl" dau-1407-mypl" dass="hljs-keywor view (i.e., thfor (


    首 iew.getChildAt(an>nfo.mViewScrg" data-id="hea>ifalse补白

    . | k ! VnSspan class="hlj class="hljs jaabled()) {
    
post>$ R ! { U q7 + u<被制作时，会调 code>onDeta(view: b B U H<>B s k + o G L 这个值设置成truding-0">剖析问 .
    
* static) {
    
mew:D P D/td>
    

     V产生改yStateChg">"timeCoast:);
    
privOnExposeListotView)
    
}
    
}
    
if     ">V N R 8 8 ^ ! class="hljs-keark="6hu">I e ;aultFocusHighlimypl" data-mark07-mypl" data-msaipan>)d # 1 Q ] F G在ScrollView和N/span> viewintfun is">ExposeViewAda能够说明当两个 pan class="6hu-ss="6hu-925-mypypl" data-mark=mark="6hu">, Y 视图来通知视 hu-9512-mypl" dn> until view.cnVisibleChange
光时长

    的办法，而当Scro H F ( / * B K data-mark="6huC   p;
    
}span>, 
    final <"6hu">Y ] `I A # V  `Vi6hu-585-mypl" drivate  ` j d d v Z @iew滑动的时分把">t u 1 g ! R . mAttachIn> {
    
not-mark="6hu">O 6an> exposeView "6hu">d f ! G ;>ScrollView Nes"6hu">3 T Q ~ qWindow      .OnGlobalFocusC class="hljs-papan class="hljs1>
    

    面试官： word">null
    

    4 C }privatan class="hljs-!--more-->
    

     n>;
    
}
    
 i = z B"6hu-7904-mypl"rootView: ViewG>D j ! ^像RecyclerView rams">()class="hljs-key- U g 3)n>rivate getChildExpos F irigi
    
* {。
    

    anged;
    
fun 
    
int ldata-mark="6hu"动或者VieS b E ^ g Qkeyword">over()# . ) can class="6hu-6，咱们先看x L Dttion"> fullRedraclass="hljs-keyifySubtreeAccesata-mark="6hu">s-subst">${Syste;
    
}
    
6hu">K / r
    
init {
    
}
    
Booleank="6hu">Z + * 3....
    
trclass="hljs-tit class="6hu-288ed its o oldl, e。onScrolls="hljs-keywordata-mark="6hu">时，会调用的接 n class="hljs-c()
    
Log.i(8 ] Jfunifn class="hljs-t6hu">E , a N ~ urn Z * { d F DedListener, , ^ span class="hljan class="hljs-ysteners    dapter) 相关的。特别是ree，去ss="hljs kotlinss="hljs-keyworss="6hu-6040-my class="6hu-858lass     <://www.6hu.cc/w= mSurf
    

    

    
内pan> {
rViewGroup递归调>这个状况位被设scrolled.
*/e7" title="View 7 n D W ` J ~crollChanged;
}foidata-id="headin? x . ` H S #scrollBy(iyword">classUnit

      


    		当一 title">onScroli>              
  • View有没有 tLi测验结果>draw

    • 
Vie办法触发的情况 来说，所有视图 estScrollView滑 data-mark="6huootView?.apply To(int, int)} h"hljs-keyword">-title">setExpongedListenapan class="6hu-etch办法，超过1-type">Float
当视图 pan> ViewGroup)常规剖析下源码<个视图树的rollview6hu">( N e  J S class gedtif (mlass="hljs-keywate eport;
"hljs-function"strong>ViewTreeewTreeObserver.n class="6hu-76iew是否被遮挡的js-keyword">voi用的接口
当视图{
    
 (!sFirsata-mark="6hu">>@param ollView NestScr-keyword">fun7 o U ^6hu-3196-mypl" ypl" data-mark= qride

    final<-mypl" data-marfun < (chil#span class="hlj
    
ta-mark="6hu">(V0] V Mv c d @ Z u y -mypl" data-markr.OnGlobalLayouan class="hljs-860-mypl" data-的view是不是在 h3>
    

    经过鄙人 class="6hu-918先给咱们介绍下Vword">ifta-mark="6hu">-u">9 1 5 , s D pan>{
    
oan> (mForegroun这两个能够用吗 ams">(ViewRr) {
    
views.add(@livalchedFromWindo86-mypl" data-m class="hljs-kei< count; i+mypl" data-markass="hljs-param 2 T seespan>;
    
}
    
ollView d>当视图树的接  `wGrouplChanged();
    
}
    
.istener
    		


    
Vie-5886" title="ss="hljs-functi4-mypl" data-ma/tr>
    

    
Vcopyable">
    
面所包 an>reeObserver oldl Previous h/span>r
    
exposeVword">if-keyword">ish 5  7 copyable">c 5 I o E用
    
for    面试官：老哥ass="hljs-strinp-att-5886"><6hu-10472-mypl"VisibleChangeispan> {
    
ollChanged = 

     in antem.currentTime (DEBUG_FPS) {
    
行的。那么咱们 5-mypl" data-maf (it u-2332-mypl" dahu-4692-mypl" d抬过来。
    
"expose"x w + ^ g j ran class="6hu-5pan> oldt)) {
    
mFo

    ="6hu">; % # 3 pan class="hljsdispatchOnScrol575-165f2bf113d E U ?下-mark="6hu">@ !pan class="hljs>, f Eif智UnsupportedAppU>@param ">滑动监控

    -mark="6hu">h !/span>ttachInfok="6hu">@ 4 ] ~="6hu-812-mypl"偏不，带你看看 790575-f335ce06ta-mark="6hu">rparams">(()w告诉你，这个你 ce sur可见状况8515-mypl" dataan>istener: (ViewD J 7 r d : RollView篇" alt=nfo.mViewScroll H 出现 6-mypl" data-man> true! 监控（下）｜Scr>$ * = T )rebooleanp

    checkV>if (ai hljs-keyword">cZ O y [w="hljs-doctag">">privat  1 # 7  {
    
views Ke动时会调ass="6hu-6116-m">k R d  J a =  t也是fi
    
}
    
}
    
}
    
    <获取完成了Exposs-keyword">int<听了。
那么咱们"hljs-keyword">pan> {
    
boolea">C B l Rta-mark="6hu">|nal 。
    

     / | { } 5 e z code>onVisibleC-5887"> n m U . V ~ e s)
    
}
    
}
    
}
    
s-doctag">@link ewTrode>onAttachedTan class="hljs-r 0  b<" src="https://ChildCount =  )
    
stenerc427.png"><)
}@papl" data-mark="ontent/uploads/ class="6hu-918omment">// 根视 I g 8 { .if (mAclass="hljs-com}
    
}
    
o和上篇文章相同 rrent horizonta">fun     ewtrn class="hljs-tangedIfNeeded()
    

	





    
	
			
	
    


    

	
    
		
		
    
						
            		
    

		
    
			
						分享
			
						收藏
			
						点赞(0)
			
		
    
	
    


    
			
			
			


    
    
    
                
    
            
                
    
                
    
                    上一篇
                    
    利用Xcode在非越狱机器上动态调试第三方APP
    
                
    
                
        
    
                        
    
            
                
    
                    下一篇
                    
    让人眼前一亮的 10 大 TS 项目
    
                
    
                
    
                
        
    
            
    

    			
			

    
   
    相关文章
    
   
    
    

	
    
		
	
    



	
    
		
	
    



	
    
		
    

			
    
							
    

			
    
				
									
			
    

			
    
				
				
    
					MobPush for Flutter
				
    

									
    集成准备 这是一个基于 MobPush 功用的扩展的 Flutter 插件。使用...
    
				
									
    
						
						0
						0
						37
											
    
							
    
		
    
	
    



	
    
		
	
    

    
    

    

			
		

		
    
			
    
				
    推广
     
广州私人财产调查公司