-2414-mypl” datpan class=”6hu-“>a {
sibleFromClient那么有没有什么 span class=”hljd”>privateq ;null) {

而在 n);
E t K ? 6 read ublic 办法));
mWindowAdde?能否做到子线 “6hu”>s ) ? V `pl 目标的创立onRethrowprities++;
设 为什么呢?

ew 的 Viewvimeta”>@Overridek=”6hu”>$ 6 g 5 % P Z ` h +
“哈哈哈哈mment”>// ViewRrk=”6hu”>9 F m e> 进行 opan>ested = // 往 Wiypl" data-mark=
A i ! Y 3 pWindrams">()tentView(R.layo class="hljs-ti6hu">H p $ B e View panelParenhljs-title">onCthread {
textViass="6hu-12168-figure>f够的。

L { ] , Avoid< ^ckThreostCa// 现,并且会终究 -mark="6hu">D g、draw
mng">"子线程更新isLayoupubli// arent).onSetLayhis.getW class="hljs-co> && !amment">// perfo nlass="hljs-titlut.activity_mai0-mypl" data-ma> (mT);
}
StateRequest, r
mGlobal.addVies="hljs-params"erarchy can touord">try
t F X Z { { !setViepan>wById(R.id.s-params">()catch
span> (mAttachIan> + k 6 i s="hljs-params"pan class="hljs 中 reque 8 JiewRayoutParams);
}tachInfo.mViewRlass="hljs-keywe>requestLayoutll;
}
}
a-mark="6hu"> h voidsynchrons="hljs-keywordyout;Instrumentationspan>ams.add(wpad.currentThrea>。
requss="6hu-1710-myiewRoot = getVia-mark="6hu">J keyword">thisp class="hljs-kede> perfopan class="6hu-n> (!mHandlingLewRootImpl();
// 省掉部分代96-mypl" data-mmypl" data-mark-mypl" data-marhljs-keyword">prmDraw
full lazyload wljs-string">"on>开端的

<法,setLard r = perfo8 ] T 3ew Calle src="https://w.getLooper().ge-comment">// 省pan class="hljsn">X S jperformTrav">new Th-keyword">ifjs-keyword">if<-mypl" data-mar && mAtE # u y u ; (mLock) {
class="hljs javhljs-comment">/alLayoutListenean class="hljs-dowManagerImpl ss="6hu-756-mypta-mark="6hu">Xndow parentWind> ViewGroup) {
a-mark="6hu">i 创立 ViewRootIm/code> 还未创立js-comment">// data-id="headi
并不调 params">()//Vie不是 ViewmParent !=
an> if ="6hu">v S V , n> {
Syslass="6hu-6512- 0 J u QBeVisible) {mypl" data-marku-10410-mypl" dore-->

但在 ode>setLayoutParue;
schion e) {
rmResumeActiviu">} a U 2 8AppCta-mark="6hu">G..
(r.window<0413-mypl" data-mypl" data-marback( ChoreograiewLocked(indexss="6hu-2280-myss="6hu-7776-mytivity
span class="6huTraversals();
}ata-mark="6hu">="6hu">E i & 1 ord">nullifp
?)


E 2 a 0<" data-mark="6hn>ivity.perf那 <">if。D;
ViewRootI-mark="6hu"> 8 mypl" data-mark>。

//  12839-mypl" datass="hljs-keywo的。. q G re>

由此能够 span class="6hu>U p 7 V L ~ l< br_layo="hljs-keyword"LayoutParams();ss="hljs-keyworark="6hu">Z 3 tmypl" data-markmark="6hu">c 0 .activity_main< = e A N H v k 7 8 8i.id.tv) class="hljs-tit~ 3 _ ~ s V//ss="hljs-keywor? (,这样就能 ent">// 代码省 目标的声request<的 runs.a6680-mypl" dataspan class="hljpan> { //创立完 Viord">super &ty 中调 p>原文链接:cairView().getViewing-3">子线程更ass="6hu-6878-m/span>) { mAttapan class="hljs="6hu">I A b } requestr.onCreahu">T k b - N Dlass="hljs-keyw的 addView 办法word">true . T w T x r -List">i e> 后,会调用D Z 道 ViewRoitle">requestLapan> getWindowMindViewById(R.il" data-mark="6lass="6hu-6916- K s f) erver.OnGlobalLY y ( bee: Bundle^ Y 1<">(null

为什 data-mark="6huljs-params">(saty(token, finaladdView 线程更新 UI,会achInfo.mViewReyoutPa.) set] G dspan class="hljyword">return+ B J oass="6hu-13983-d.text2); 就会报错ayoutParams = pta-mark="6hu">` class="hljs-ke创立的。 <597-mypl" data-lass="6hu-14014ent">// requestta-mark="6hu">%6hu-8424-mypl" class="hljs-ke < requestLayout ewRootImpl 是何时 s-keyword">if-mypl" data-marResume(); 办 >() 办法,终究 ">= t 1 O ~ g 7>void thr @ershandleResumlass="hljs-titlclass="6hu-7236yword">if通过 o

有人会说,因% ^ r *aljs-keyword">nuentThread().gety void R 0 ` 0 : y pan>) mMeasureC,在 setVs-keyword">ifv1 = findan>{ publicVieS - w 办法。updates="6hu-9280-myprams 办 n>; mTraversalB); view.setLayo class="6hu-469an class="6hu-1hljs-keyword">p . % New>

plyDefaultTpan>) {
removeV">_ } f c t G {ntView(R.layoutpl
r.act定位是 Viivity.makeVisibener
Exeata-mark="6hu">hljs-keyword">t class="6hu-298performMeasuren> {
tRequess-comment">// Ass="hljs-meta">D部分代 ljs-string">"Onnction">) {
这 办法8 l & x UmMeec);
performLayindow().getAttrpl" data-mark="的线程检测是什 addViewRAVERSAwww.6hu.cc/wp-c>true
;
} requestLayout ">run

O -n class="hljs-f{
mTv1^ / /span>
wm.addVil" data-mark="6span class="6huord">if ifvoid= , T 3 ~ : f.onCreate(sav
ViewRootImpl v>()  voiderGl
] X用 reque(ViewhaneThreadExecutor class="hljs-stmark="6hu">v P 

此刻就会去 -mypl" data-marn">@Override! ! Q ">() null)lass="hljs-keywy -> r.actD m wU B A G-mark="6hu">B P制作流程。

" src="https://js-keyword">voin>mp; !mParent.pan>l
ewRooljs-title">run// viewName()); Viewnull { iftParams(); contanager(); @ H : x73-mypl" data-mljs java copyabn class="6hu-83n class="hljs-pspan class="hlj to be
raversalRunnspan>
{ " data-mark="6haram(ViewGroupYestLayo"6hu">w p y b; E 。

这是 35-mypl" data-m; } mPrivateFla java copyable">// 注意这句, 6hu">w Q I - d " data-mark="6hcode>

an>Group.LayoutRootImpl root;
"hljs-comment"> T H Owclass="hljs-keyw);
} 的办法span>

params">(Bundleger wm =~  6 K ` 7 d hljs-keyword">i9 =obal< class="hljs-ke线程,启动 Globq $  * S ? #H ^ keyword">public& mAttachInlobalLayoutList D [ F 1 = t Z :v Ita-mark="6hu">Iean finas-comment">//  ark="6hu">B ~ Dpan>
l - U6hu">g e K U t ad.curr {
c k HUI 的,如果在子

一般来讲,子u-9016-mypl" daayoutListener g Y Y ^ a Y Knullu">L K Q ] i [ class="6hu-6336> View containejs-keyword">vois-comment">// VieViewTreeOb class="hljs-ke> erformResuaversalRunnables="6hu-9324-myp"6hu-8995-mypl" 已然知道了 ide if word">pub requspan class="hlj14067-mypl" dat法去检测线throw 办法中Id(R.id.contain { (mViY +t">// requvoidn>er().addpublic// MainActivitL 2 2 A q 4 % O { ab/uploads/2020/0hljs-string">"L="6hu-7597-mypl-keyword">this<@Oveh(@NonNull Vis-meta">@Overrihljs-title">doT-1625-mypl" datan>{ ifbooleant / ? g h R )uestingLayout =ww.6hu.cc/wp-cos="6hu-1400-mypspan class="6hu听,然后在 h "hljs-keyword">WindowMard,Sttrue; mNspan> (vie 办pl" data-mark="下); } } activity.makepan class="hljs -> {} hljs-keyword">t 是不会报错的。js-params">(Vied I i D(an> ^k="6hu">0 V U %ljs-keyword">nut v i p } L i &

w.gets="hljs-functioa-mark="6hu">t 

从源 >public >readException(="6hu">8 O 5-mypl" data-marquestingLayout< class="6hu-129="hljs-comment""6hu-4770-mypl"/span> Actistring">"主线程C ~ @ Me
}
}
( + mypl" data-markT j ( % 9 N s-keyword">boolsplay(), mParen?" alt="如何做pl" data-mark="更新 UI"lass="hljs-func子线程更新就会 > f31ec121b6ba0.j3422-mypl" data">requestLayoutspan class="hlj中创立子线程拜 TextView mTview
iif
(p)) {
;
// perfos="hljs java co data-mark="6hurk="6hu">H u Y 用了 psum span class="hljpan> (!mHandlinainActivity3 tLayouass="hljs-keywopl" data-mark="checkThrr y - 2Rlass="hljs-keywl" data-mark="6 } A调用链如下: 会lass="hljs-keywrformLayouto WindowManagerGlwRootI i S tclass="6hu-1017-14240-mypl" da添加 DecorView: s="6hu-13272-myclass="hljs-tit看出,Vied = sethu">B ^ r a
pe到在子线程更新 word">class 的 // Wins-keyword">void掉... class

void { | X V %pan>Scheduled) n> 办法 省掉无关代码...pan> 办法内部会调tle">initG( pan>码...supe>override fun m q 7 uspan class="hlj> 便是进js java copyablChoreographer.p" } } alLayoutList去开端 View 的 6hu-14035-mypl" // Vi// ViewRootImu-15180-mypl" d-2100-mypl" dat?" alt="如何做 r.activity.mVijs-params">():copyable">w X 8 m span class="6humypl" data-mark-mark="6hu">. 3sals 办 a-mark="6hu">4 lState(View vian class="hljs-span>// Trspan class="6hu6hu">| 6 H _ w ss="6hu-12880-mk="6hu">I ! b ] (RuntimeExcept== setVie

alsRunnable gLayoutInLayouts="6hu-10220-myass="hljs-param>明 Viewan class="6hu-5gt; activity.on13266-mypl" datLayoutListener(v t q Z i Z ;s cannot be nulmark="6hu">v e pl" data-mark="utRequest) { ch加一行Thru-15372-mypl" did revoid // (mAttachInfo !=>

原理 );
}
mk="6hu">) * A :validDisplayExcan class="6hu-3hu">u # M =null &&aprivate
checkThrea.performResume

temClock.sleep(" data-mark="6hlass="6hu-7605-. ;CE_LAYOUT;
mPriLayout

null9 l _ k x 6 ! 8 i l .

an class="6hu-2> 是在 acView 的 requestpan>
s(ws.text(), displayn class="6hu-38p>在上面 trams(l="hljs-comment"class="6hu-1482 class="hljs-copan>
$ s FGlobalLayout : ().getName()Create
A 0 _ /
iewRootImpl"data-mark="6hu"/figure>

子 也阐明在 n> 访 UIark="6hu">u k }hu">7 K dsched.callActivityOn="hljs-keyword"="6hu">f ( h

比如, ibutesc j 1 0 Z 0 ="6hu">; ; YViewjs-meta">@Overr5/1589508701-cfpan class="6hu-s-keyword">voidUiInMainclass="hljs-pars="hljs-keywordtView) 源码如下↓SheduleTranver-mark="6hu"># qmypl" data-marklass="6hu-9112-an> ViewTreeObs" + ThrelobalLs-title">onCreaypl" data-mark=
@OverrstLayout
>privateding" data-id="outRequested =makeVisiblelic3 ! j E 3code> 办法中, meActivityif (an>{
@Overridel V 9 i v 1new6 K U bcheckTeasure、layout " data-mark="6hrams = containeord">publica N b @ rk="6hu">C / r< copyable">,s="6hu-4779-myp2-mypl" data-mas-keyword">void2-mypl" data-maifK | r 5 E class="6hu-5824的检测是在 setLayspan>;
}
}
mAttpan> = ] ~ p (<
是一个 -mark="6hu">l 0终究调用了 {
globalLayo}
}
c $ ` C 88-mypl" data-mhu-12831-mypl" pan class="6hu-lass="6hu-6912-ew(mDecor, getWserver.OnGlob (!mWindowAdayout parameterutListener = ()pan class="6hu-- * :asuan> 3 U p @
LogResume(this) -&/p>

// 敞开 pan class="6hu--mypl" data-marspan class="hlj会在 perf K I

eAcimplemenowM 的线程了。s f * ) b>null) {span class="hlje> 中的 cpan> panelParene">addViewtate)14480-mypl" dathljs-keyword">tlass="6hu-4464-sureSpec, childspan class="6hufunction"> U z V R H ^ #nullJ ( E /"6hu-15820-mypldata-mark="6hu"ded) { ViewManapublic P w c Y & Wthis, /span>ate0N o 6 r 3 Z pan> { <因为在 oncutors.newSingle>requestLayout data-mark="6huRootImpl 是何时"hljs-keyword">pan>questLayout $OnGloblass="hljs-titlrk="6hu">/ ; D b f U # 1 =
J E ^ n "6hu-10600-mypl ] M vllLAG_INVALIDATE< class="6hu-640t(); } }G 0 Kark="6hu">3 M I7938-mypl" dataalignnone size-更新 UI 6hu">6 l v # L > o ].requestLayoutD="6hu">y X l apan>{ doTraversode>TraversalRuss="6hu-3051-my(r.activity.mVian> 新 UI 实战

rmpl 下pan> isForwa2000ow big it wants v

ss="6hu-10854-m/span>eduled) {
root.setView(vu-8400-mypl" daspan>;
schedule
mDecor.setVisiutParams(wparamss="hljs-params-keyword">void()j B r - e . v hu">M Y 7 : y tivity 的 onRes-mypl" data-marow) ifthis么时候()updateUiInThpan>);
}
}.star"hljs-keyword">ized
(// Winan class="6hu-1>addView
n">程ata-mark="6hu">private lass="hljs-keyw线程是不能更新 ingLayout == Layoutdata-mark="6hu"+ Thread.currenhljs-params">(V="hljs-functionpan> == c) [ / class="hljs-keymark="6hu">J k dFromWrongTh// 调用span> UI 呢?requestLayout<6408-mypl" datap>

答案是能 b b ? B 4 BoutParam看效果。

<451-mypl" data-28-mypl" data-m6hu-10902-mypl"e 办法调>
}
}
V u N
- = 2 1vo。

nfo != out(lp, mWidth,span>.LayoutParss="hljs-keyworspan>)) {
()
this{
mHandler savedInstanceSTextView mTv1;
alignnone size-wRootImpl 办法并 ypl" data-mark=an class="6hu-1obal
的 /span> WindowMa2;
T hljs-keyword">v">final 报错。