使用Android Studio 3.0渲染问题

I just updated Android Studio to 3.0 and I can't see my preview of the xml file.. It says

我刚刚将Android Studio更新到3.0,我看不到我对xml文件的预览..它说

Exception raised during rendering: Could not initialize class android.graphics.Typeface

java.lang.NoClassDefFoundError: Could not initialize class android.graphics.Typeface
    at android.graphics.Paint_Delegate.reset(Paint_Delegate.java:1244)
    at android.graphics.Paint_Delegate.<init>(Paint_Delegate.java:1198)
    at android.graphics.Paint_Delegate.nInit(Paint_Delegate.java:694)
    at android.graphics.Paint.nInit(Paint.java)
    at android.graphics.Paint.<init>(Paint.java:481)
    at android.graphics.drawable.ColorDrawable.<init>(ColorDrawable.java:49)
    at com.android.layoutlib.bridge.impl.ResourceHelper.getDrawable(ResourceHelper.java:303)
    at com.android.layoutlib.bridge.impl.ResourceHelper.getDrawable(ResourceHelper.java:249)
    at com.android.layoutlib.bridge.impl.Layout.<init>(Layout.java:140)
    at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:288)
    at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:384)
    at com.android.tools.idea.layoutlib.LayoutLibrary.createSession(LayoutLibrary.java:193)
    at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:547)
    at com.android.tools.idea.rendering.RenderTask.lambda$inflate$3(RenderTask.java:681)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

and can't render it. pls help me :(

并且无法渲染它。请帮助我 :(

6 个解决方案

#1

After update Android Studio up to 3.0 I had problems with showing layouts previews too. That's what helped me:

在将Android Studio更新到3.0之后,我也遇到了显示布局预览的问题。这对我有所帮助:

1. Go to menu "File"

转到菜单“文件”

2. Choose "Invalidate Cashes / Restart"

选择“无效兑现/重新启动”

3. In opened window click "Invalidate and Restart"

在打开的窗口中单击“无效并重新启动”

Hope it'll help

希望它会有所帮助

#2

same problem to me.

同样的问题给我。

have you ever edited fonts.xml before, (maybe korean fonts or something edited)

你以前编辑过fonts.xml吗(可能是韩文字体或者编辑过的东西)

1. open "\plugins\android\lib\layoutlib\data\fonts\fonts.xml" file

打开“\ plugins \ android \ lib \ layoutlib \ data \ fonts \ fonts.xml”文件

2. in my case, 474~475 line was corrupted. you must fix

   '<family lan' to '</familyset>'

在我的情况下,474〜475线已损坏。你必须把' '

or reinstall android studio 3.0

或重新安装android studio 3.0

#3

C:\Program Files\Android\Android Studio\plugins\android\lib\layoutlib\data\fonts

C:\ Program Files \ Android \ Android Studio \ plugins \ android \ lib \ layoutlib \ data \ fonts

Replace the fonts.xml file with this and restart

用这个替换fonts.xml文件并重新启动

<?xml version="1.0" encoding="utf-8"?>
<!--
    WARNING: Parsing of this file by third-party apps is not supported. The
    file, and the font files it refers to, will be renamed and/or moved out
    from their respective location in the next Android release, and/or the
    format or syntax of the file may change significantly. You must not
    parse this file for information about system fonts. Instead, you must
    call android.text.FontManager#getSystemFonts(). For example, it can be
    called as context.getSystemService(FontManager.class).getSystemFonts().
    Note that the returned FontConfig includes data on all the defined font
    families and all the details about weight, style, etc. It also provides
    an open file descriptor to each font file. Note that callers of the API
    should ensure they close the given file descriptors once they are done
    using them.

    In this file, all fonts without names are added to the default list.
    Fonts are chosen based on a match: full BCP-47 language tag including
    script, then just language, and finally order (the first font containing
    the glyph).

    Order of appearance is also the tiebreaker for weight matching. This is
    the reason why the 900 weights of Roboto precede the 700 weights - we
    prefer the former when an 800 weight is requested. Since bold spans
    effectively add 300 to the weight, this ensures that 900 is the bold
    paired with the 500 weight, ensuring adequate contrast.
-->
<familyset version="22">
    <!-- first font is default -->
    <family name="sans-serif">
        <font weight="100" style="normal">Roboto-Thin.ttf</font>
        <font weight="100" style="italic">Roboto-ThinItalic.ttf</font>
        <font weight="300" style="normal">Roboto-Light.ttf</font>
        <font weight="300" style="italic">Roboto-LightItalic.ttf</font>
        <font weight="400" style="normal">Roboto-Regular.ttf</font>
        <font weight="400" style="italic">Roboto-Italic.ttf</font>
        <font weight="500" style="normal">Roboto-Medium.ttf</font>
        <font weight="500" style="italic">Roboto-MediumItalic.ttf</font>
        <font weight="900" style="normal">Roboto-Black.ttf</font>
        <font weight="900" style="italic">Roboto-BlackItalic.ttf</font>
        <font weight="700" style="normal">Roboto-Bold.ttf</font>
        <font weight="700" style="italic">Roboto-BoldItalic.ttf</font>
    </family>

    <!-- Note that aliases must come after the fonts they reference. -->
    <alias name="sans-serif-thin" to="sans-serif" weight="100" />
    <alias name="sans-serif-light" to="sans-serif" weight="300" />
    <alias name="sans-serif-medium" to="sans-serif" weight="500" />
    <alias name="sans-serif-black" to="sans-serif" weight="900" />
    <alias name="arial" to="sans-serif" />
    <alias name="helvetica" to="sans-serif" />
    <alias name="tahoma" to="sans-serif" />
    <alias name="verdana" to="sans-serif" />

    <family name="sans-serif-condensed">
        <font weight="300" style="normal">RobotoCondensed-Light.ttf</font>
        <font weight="300" style="italic">RobotoCondensed-LightItalic.ttf</font>
        <font weight="400" style="normal">RobotoCondensed-Regular.ttf</font>
        <font weight="400" style="italic">RobotoCondensed-Italic.ttf</font>
        <font weight="700" style="normal">RobotoCondensed-Bold.ttf</font>
        <font weight="700" style="italic">RobotoCondensed-BoldItalic.ttf</font>
    </family>
    <alias name="sans-serif-condensed-light" to="sans-serif-condensed" weight="300" />

    <family name="serif">
        <font weight="400" style="normal">NotoSerif-Regular.ttf</font>
        <font weight="700" style="normal">NotoSerif-Bold.ttf</font>
        <font weight="400" style="italic">NotoSerif-Italic.ttf</font>
        <font weight="700" style="italic">NotoSerif-BoldItalic.ttf</font>
    </family>
    <alias name="times" to="serif" />
    <alias name="times new roman" to="serif" />
    <alias name="palatino" to="serif" />
    <alias name="georgia" to="serif" />
    <alias name="baskerville" to="serif" />
    <alias name="goudy" to="serif" />
    <alias name="fantasy" to="serif" />
    <alias name="ITC Stone Serif" to="serif" />

    <family name="monospace">
        <font weight="400" style="normal">DroidSansMono.ttf</font>
    </family>
    <alias name="sans-serif-monospace" to="monospace" />
    <alias name="monaco" to="monospace" />

    <family name="serif-monospace">
        <font weight="400" style="normal">CutiveMono.ttf</font>
    </family>
    <alias name="courier" to="serif-monospace" />
    <alias name="courier new" to="serif-monospace" />

    <family name="casual">
        <font weight="400" style="normal">ComingSoon.ttf</font>
    </family>

    <family name="cursive">
        <font weight="400" style="normal">DancingScript-Regular.ttf</font>
        <font weight="700" style="normal">DancingScript-Bold.ttf</font>
    </family>

    <family name="sans-serif-smallcaps">
        <font weight="400" style="normal">CarroisGothicSC-Regular.ttf</font>
    </family>

    <!-- fallback fonts -->
    <family lang="und-Arab" variant="elegant">
        <font weight="400" style="normal">NotoNaskhArabic-Regular.ttf</font>
        <font weight="700" style="normal">NotoNaskhArabic-Bold.ttf</font>
    </family>
    <family lang="und-Arab" variant="compact">
        <font weight="400" style="normal">NotoNaskhArabicUI-Regular.ttf</font>
        <font weight="700" style="normal">NotoNaskhArabicUI-Bold.ttf</font>
    </family>
    <family lang="und-Ethi">
        <font weight="400" style="normal">NotoSansEthiopic-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansEthiopic-Bold.ttf</font>
    </family>
    <family lang="und-Hebr">
        <font weight="400" style="normal">NotoSansHebrew-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansHebrew-Bold.ttf</font>
    </family>
    <family lang="und-Thai" variant="elegant">
        <font weight="400" style="normal">NotoSansThai-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansThai-Bold.ttf</font>
    </family>
    <family lang="und-Thai" variant="compact">
        <font weight="400" style="normal">NotoSansThaiUI-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansThaiUI-Bold.ttf</font>
    </family>
    <family lang="und-Armn">
        <font weight="400" style="normal">NotoSansArmenian-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansArmenian-Bold.ttf</font>
    </family>
    <!-- TODO: add Geok -->
    <family lang="und-Geor">
        <font weight="400" style="normal">NotoSansGeorgian-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansGeorgian-Bold.ttf</font>
    </family>
    <family lang="und-Deva" variant="elegant">
        <font weight="400" style="normal">NotoSansDevanagari-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansDevanagari-Bold.ttf</font>
    </family>
    <family lang="und-Deva" variant="compact">
        <font weight="400" style="normal">NotoSansDevanagariUI-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansDevanagariUI-Bold.ttf</font>
    </family>

    <!-- All scripts of India should come after Devanagari, due to shared
         danda characters.
    -->
    <family lang="und-Gujr" variant="elegant">
        <font weight="400" style="normal">NotoSansGujarati-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansGujarati-Bold.ttf</font>
    </family>
    <family lang="und-Gujr" variant="compact">
        <font weight="400" style="normal">NotoSansGujaratiUI-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansGujaratiUI-Bold.ttf</font>
    </family>
    <family lang="und-Guru" variant="elegant">
        <font weight="400" style="normal">NotoSansGurmukhi-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansGurmukhi-Bold.ttf</font>
    </family>
    <family lang="und-Guru" variant="compact">
        <font weight="400" style="normal">NotoSansGurmukhiUI-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansGurmukhiUI-Bold.ttf</font>
    </family>
    <family lang="und-Taml" variant="elegant">
        <font weight="400" style="normal">NotoSansTamil-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansTamil-Bold.ttf</font>
    </family>
    <family lang="und-Taml" variant="compact">
        <font weight="400" style="normal">NotoSansTamilUI-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansTamilUI-Bold.ttf</font>
    </family>
    <family lang="und-Mlym" variant="elegant">
        <font weight="400" style="normal">NotoSansMalayalam-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansMalayalam-Bold.ttf</font>
    </family>
    <family lang="und-Mlym" variant="compact">
        <font weight="400" style="normal">NotoSansMalayalamUI-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansMalayalamUI-Bold.ttf</font>
    </family>
    <family lang="und-Beng" variant="elegant">
        <font weight="400" style="normal">NotoSansBengali-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansBengali-Bold.ttf</font>
    </family>
    <family lang="und-Beng" variant="compact">
        <font weight="400" style="normal">NotoSansBengaliUI-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansBengaliUI-Bold.ttf</font>
    </family>
    <family lang="und-Telu" variant="elegant">
        <font weight="400" style="normal">NotoSansTelugu-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansTelugu-Bold.ttf</font>
    </family>
    <family lang="und-Telu" variant="compact">
        <font weight="400" style="normal">NotoSansTeluguUI-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansTeluguUI-Bold.ttf</font>
    </family>
    <family lang="und-Knda" variant="elegant">
        <font weight="400" style="normal">NotoSansKannada-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansKannada-Bold.ttf</font>
    </family>
    <family lang="und-Knda" variant="compact">
        <font weight="400" style="normal">NotoSansKannadaUI-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansKannadaUI-Bold.ttf</font>
    </family>
    <family lang="und-Orya" variant="elegant">
        <font weight="400" style="normal">NotoSansOriya-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansOriya-Bold.ttf</font>
    </family>
    <family lang="und-Orya" variant="compact">
        <font weight="400" style="normal">NotoSansOriyaUI-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansOriyaUI-Bold.ttf</font>
    </family>

    <family lang="und-Sinh">
        <font weight="400" style="normal">NotoSansSinhala-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansSinhala-Bold.ttf</font>
    </family>
    <family lang="und-Khmr" variant="elegant">
        <font weight="400" style="normal">NotoSansKhmer-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansKhmer-Bold.ttf</font>
    </family>
    <family lang="und-Khmr" variant="compact">
        <font weight="400" style="normal">NotoSansKhmerUI-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansKhmerUI-Bold.ttf</font>
    </family>
    <family lang="und-Laoo" variant="elegant">
        <font weight="400" style="normal">NotoSansLao-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansLao-Bold.ttf</font>
    </family>
    <family lang="und-Laoo" variant="compact">
        <font weight="400" style="normal">NotoSansLaoUI-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansLaoUI-Bold.ttf</font>
    </family>
    <family lang="und-Mymr" variant="elegant">
        <font weight="400" style="normal">NotoSansMyanmar-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansMyanmar-Bold.ttf</font>
    </family>
    <family lang="und-Mymr" variant="compact">
        <font weight="400" style="normal">NotoSansMyanmarUI-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansMyanmarUI-Bold.ttf</font>
    </family>
    <family lang="und-Thaa">
        <font weight="400" style="normal">NotoSansThaana-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansThaana-Bold.ttf</font>
    </family>
    <family lang="und-Cham">
        <font weight="400" style="normal">NotoSansCham-Regular.ttf</font>
        <font weight="700" style="normal">NotoSansCham-Bold.ttf</font>
    </family>
    <family lang="und-Avst">
        <font weight="400" style="normal">NotoSansAvestan-Regular.ttf</font>
    </family>
    <family lang="und-Bali">
        <font weight="400" style="normal">NotoSansBalinese-Regular.ttf</font>
    </family>
    <family lang="und-Bamu">
        <font weight="400" style="normal">NotoSansBamum-Regular.ttf</font>
    </family>
    <family lang="und-Batk">
        <font weight="400" style="normal">NotoSansBatak-Regular.ttf</font>
    </family>
    <family lang="und-Brah">
        <font weight="400" style="normal">NotoSansBrahmi-Regular.ttf</font>
    </family>
    <family lang="und-Bugi">
        <font weight="400" style="normal">NotoSansBuginese-Regular.ttf</font>
    </family>
    <family lang="und-Buhd">
        <font weight="400" style="normal">NotoSansBuhid-Regular.ttf</font>
    </family>
    <family lang="und-Cans">
        <font weight="400" style="normal">NotoSansCanadianAboriginal-Regular.ttf</font>
    </family>
    <family lang="und-Cari">
        <font weight="400" style="normal">NotoSansCarian-Regular.ttf</font>
    </family>
    <family lang="und-Cher">
        <font weight="400" style="normal">NotoSansCherokee-Regular.ttf</font>
    </family>
    <family lang="und-Copt">
        <font weight="400" style="normal">NotoSansCoptic-Regular.ttf</font>
    </family>
    <family lang="und-Xsux">
        <font weight="400" style="normal">NotoSansCuneiform-Regular.ttf</font>
    </family>
    <family lang="und-Cprt">
        <font weight="400" style="normal">NotoSansCypriot-Regular.ttf</font>
    </family>
    <family lang="und-Dsrt">
        <font weight="400" style="normal">NotoSansDeseret-Regular.ttf</font>
    </family>
    <family lang="und-Egyp">
        <font weight="400" style="normal">NotoSansEgyptianHieroglyphs-Regular.ttf</font>
    </family>
    <family lang="und-Glag">
        <font weight="400" style="normal">NotoSansGlagolitic-Regular.ttf</font>
    </family>
    <family lang="und-Goth">
        <font weight="400" style="normal">NotoSansGothic-Regular.ttf</font>
    </family>
    <family lang="und-Hano">
        <font weight="400" style="normal">NotoSansHanunoo-Regular.ttf</font>
    </family>
    <family lang="und-Armi">
        <font weight="400" style="normal">NotoSansImperialAramaic-Regular.ttf</font>
    </family>
    <family lang="und-Phli">
        <font weight="400" style="normal">NotoSansInscriptionalPahlavi-Regular.ttf</font>
    </family>
    <family lang="und-Prti">
        <font weight="400" style="normal">NotoSansInscriptionalParthian-Regular.ttf</font>
    </family>
    <family lang="und-Java">
        <font weight="400" style="normal">NotoSansJavanese-Regular.ttf</font>
    </family>
    <family lang="und-Kthi">
        <font weight="400" style="normal">NotoSansKaithi-Regular.ttf</font>
    </family>
    <family lang="und-Kali">
        <font weight="400" style="normal">NotoSansKayahLi-Regular.ttf</font>
    </family>
    <family lang="und-Khar">
        <font weight="400" style="normal">NotoSansKharoshthi-Regular.ttf</font>
    </family>
    <family lang="und-Lepc">
        <font weight="400" style="normal">NotoSansLepcha-Regular.ttf</font>
    </family>
    <family lang="und-Limb">
        <font weight="400" style="normal">NotoSansLimbu-Regular.ttf</font>
    </family>
    <family lang="und-Linb">
        <font weight="400" style="normal">NotoSansLinearB-Regular.ttf</font>
    </family>
    <family lang="und-Lisu">
        <font weight="400" style="normal">NotoSansLisu-Regular.ttf</font>
    </family>
    <family lang="und-Lyci">
        <font weight="400" style="normal">NotoSansLycian-Regular.ttf</font>
    </family>
    <family lang="und-Lydi">
        <font weight="400" style="normal">NotoSansLydian-Regular.ttf</font>
    </family>
    <family lang="und-Mand">
        <font weight="400" style="normal">NotoSansMandaic-Regular.ttf</font>
    </family>
    <family lang="und-Mtei">
        <font weight="400" style="normal">NotoSansMeeteiMayek-Regular.ttf</font>
    </family>
    <family lang="und-Talu">
        <font weight="400" style="normal">NotoSansNewTaiLue-Regular.ttf</font>
    </family>
    <family lang="und-Nkoo">
        <font weight="400" style="normal">NotoSansNKo-Regular.ttf</font>
    </family>
    <family lang="und-Ogam">
        <font weight="400" style="normal">NotoSansOgham-Regular.ttf</font>
    </family>
    <family lang="und-Olck">
        <font weight="400" style="normal">NotoSansOlChiki-Regular.ttf</font>
    </family>
    <family lang="und-Ital">
        <font weight="400" style="normal">NotoSansOldItalic-Regular.ttf</font>
    </family>
    <family lang="und-Xpeo">
        <font weight="400" style="normal">NotoSansOldPersian-Regular.ttf</font>
    </family>
    <family lang="und-Sarb">
        <font weight="400" style="normal">NotoSansOldSouthAr*-Regular.ttf</font>
    </family>
    <family lang="und-Orkh">
        <font weight="400" style="normal">NotoSansOldTurkic-Regular.ttf</font>
    </family>
    <family lang="und-Osma">
        <font weight="400" style="normal">NotoSansOsmanya-Regular.ttf</font>
    </family>
    <family lang="und-Phag">
        <font weight="400" style="normal">NotoSansPhagsPa-Regular.ttf</font>
    </family>
    <family lang="und-Phnx">
        <font weight="400" style="normal">NotoSansPhoenician-Regular.ttf</font>
    </family>
    <family lang="und-Rjng">
        <font weight="400" style="normal">NotoSansRejang-Regular.ttf</font>
    </family>
    <family lang="und-Runr">
        <font weight="400" style="normal">NotoSansRunic-Regular.ttf</font>
    </family>
    <family lang="und-Samr">
        <font weight="400" style="normal">NotoSansSamaritan-Regular.ttf</font>
    </family>
    <family lang="und-Saur">
        <font weight="400" style="normal">NotoSansSaurashtra-Regular.ttf</font>
    </family>
    <family lang="und-Shaw">
        <font weight="400" style="normal">NotoSansShavian-Regular.ttf</font>
    </family>
    <family lang="und-Sund">
        <font weight="400" style="normal">NotoSansSundanese-Regular.ttf</font>
    </family>
    <family lang="und-Sylo">
        <font weight="400" style="normal">NotoSansSylotiNagri-Regular.ttf</font>
    </family>
    <!-- Esrangela should precede Eastern and Western Syriac, since it's our default form. -->
    <family lang="und-Syre">
        <font weight="400" style="normal">NotoSansSyriacEstrangela-Regular.ttf</font>
    </family>
    <family lang="und-Syrn">
        <font weight="400" style="normal">NotoSansSyriacEastern-Regular.ttf</font>
    </family>
    <family lang="und-Syrj">
        <font weight="400" style="normal">NotoSansSyriacWestern-Regular.ttf</font>
    </family>
    <family lang="und-Tglg">
        <font weight="400" style="normal">NotoSansTagalog-Regular.ttf</font>
    </family>
    <family lang="und-Tagb">
        <font weight="400" style="normal">NotoSansTagbanwa-Regular.ttf</font>
    </family>
    <family lang="und-Lana">
        <font weight="400" style="normal">NotoSansTaiTham-Regular.ttf</font>
    </family>
    <family lang="und-Tavt">
        <font weight="400" style="normal">NotoSansTaiViet-Regular.ttf</font>
    </family>
    <family lang="und-Tibt">
        <font weight="400" style="normal">NotoSans*-Regular.ttf</font>
        <font weight="700" style="normal">NotoSans*-Bold.ttf</font>
    </family>
    <family lang="und-Tfng">
        <font weight="400" style="normal">NotoSansTifinagh-Regular.ttf</font>
    </family>
    <family lang="und-Ugar">
        <font weight="400" style="normal">NotoSansUgaritic-Regular.ttf</font>
    </family>
    <family lang="und-Vaii">
        <font weight="400" style="normal">NotoSansVai-Regular.ttf</font>
    </family>
    <family lang="und-Yiii">
        <font weight="400" style="normal">NotoSansYi-Regular.ttf</font>
    </family>
    <family>
        <font weight="400" style="normal">NotoSansSymbols-Regular-Subsetted.ttf</font>
    </family>
    <family lang="zh-Hans">
        <font weight="400" style="normal" index="2">NotoSansCJK-Regular.ttc</font>
    </family>
    <!-- TODO: Add Bopo -->
    <family lang="zh-Hant">
        <font weight="400" style="normal" index="3">NotoSansCJK-Regular.ttc</font>
    </family>
    <family lang="ja">
        <font weight="400" style="normal" index="0">NotoSansCJK-Regular.ttc</font>
    </family>
    <family lang="ko">
        <font weight="400" style="normal" index="1">NotoSansCJK-Regular.ttc</font>
    </family>
    <family lang="und-Zsye">
        <font weight="400" style="normal">NotoColorEmoji.ttf</font>
    </family>
    <family lang="und-Zsym">
        <font weight="400" style="normal">NotoSansSymbols-Regular-Subsetted2.ttf</font>
    </family>
    <!--
        Tai Le and *n are intentionally kept last, to make sure they don't override
        the East Asian punctuation for Chinese.
    -->
    <family lang="und-Tale">
        <font weight="400" style="normal">NotoSansTaiLe-Regular.ttf</font>
    </family>
    <family lang="und-Mong">
        <font weight="400" style="normal">NotoSans*n-Regular.ttf</font>
    </family>
</familyset>

#4

Something similar happened to me, I feel like it is an Android Studio bug? I had to change the app theme to use Base.Theme.AppCompat instead of just Theme.AppCompat.

类似的事情发生在我身上,我觉得这是一个Android Studio的bug?我不得不更改应用程序主题以使用Base.Theme.AppCompat而不仅仅是Theme.AppCompat。

 <!-- Base application theme. -->
    <style name="AppTheme" parent="Base.Theme.AppCompat.Light">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

After this the xml layouts render fine.

在此之后,xml布局呈现正常。

One problem that stemmed from this solution is that I could not use a parent theme with NoActionBar, so I had to hide it manually if using a Toolbar:

源于此解决方案的一个问题是我无法使用NoActionBar的父主题,因此如果使用工具栏,我必须手动隐藏它:

<item name="windowActionBar">false</item>

#5

I suffered same problem with same rendering error message.

我遇到了同样的渲染错误消息问题。

After many hours of research and tried this and that.. and I ended up reinstalling Android Studio 3.0 after I completely uninstalled following this guideline : How to completely uninstall Android Studio?

经过几个小时的研究并尝试了这个和那个......我在完全卸载后遵循以下指南重新安装Android Studio 3.0:如何完全卸载Android Studio?

and the result? it works well :)

结果呢?它运作良好:)

#6

I also have an issue of previewing xml layout. but now it fixed.

我还有一个预览xml布局的问题。但现在它已经修好了。

Because you may have updated any file on your Android Studio installed directory.

因为您可能已更新Android Studio安装目录中的任何文件。

My condition I updated font.xml file for previewing Korean character purpose (Android Studio\plugins\android\lib\layoutlib\data\fonts\fonts.xml).

我的条件我更新了font.xml文件以预览韩文字符目的(Android Studio \ plugins \ android \ lib \ layoutlib \ data \ fonts \ fonts.xml)。

And Android Studio 3.0 has made an update on that file for previewing Korean character, so after installing I don't need to update my font.xml anymore.

并且Android Studio 3.0对该文件进行了更新以预览韩文字符,因此安装后我不再需要更新我的font.xml。

My solution are very simple steps:

我的解决方案步骤非常简单:

• Uninstall the current installed Android Studio 3.0

卸载当前安装的Android Studio 3.0

• Download and install the latest version of Android Studio 3.0 again.

再次下载并安装最新版本的Android Studio 3.0。

After uninstalling everything in the installed directory will be removed and the fully update of Android Studio 3.0 when you install the download file.

卸载后,将删除安装目录中的所有内容,并在安装下载文件时完全更新Android Studio 3.0。

Check my comment here for detail: Android Studio layout preview rendering issue after update

请在此处查看我的评论以获取详细信息:更新后的Android Studio布局预览呈现问题

hope my solution help you.

希望我的解决方案帮助你。