<p dir="auto">下拉刷新网络请求无反应。<br>
--- translate ---<br>
Drop-down refreshes network requests without response.</p>
<h2 dir="auto">Steps to Reproduce</h2>
<ol dir="auto">
<li>在FlutterViewController上present一个WebViewController。<br>
--- translate ---<br>
On FlutterViewController, present a WebViewController.<br>
[self presentViewController:viewControllerToPresent animated:flag completion:completion];</li>
<li>返回FlutterViewController，刷新网络请求。<br>
--- translate ---<br>
Return to FlutterViewController to refresh the network request.</li>
<li>如果没出现，则重复步骤1、2<br>
--- translate ---<br>
If it does not appear, repeat steps 1 and 2.</li>
</ol>
<h2 dir="auto">Logs</h2>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="[VERBOSE-2:engine.cc(157)] Could not prepare to run the isolate.
[VERBOSE-2:engine.cc(116)] Engine not prepare and launch isolate.
[VERBOSE-2:FlutterViewController.mm(462)] Could not launch engine with configuration."><pre class="notranslate"><code class="notranslate">[VERBOSE-2:engine.cc(157)] Could not prepare to run the isolate.
[VERBOSE-2:engine.cc(116)] Engine not prepare and launch isolate.
[VERBOSE-2:FlutterViewController.mm(462)] Could not launch engine with configuration.
</code></pre></div>

<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="bogon:star_admin v7lin$ flutter doctor -v
[✓] Flutter (Channel beta, v0.9.4, on Mac OS X 10.13.6 17G65, locale zh-Hans-CN)
    • Flutter version 0.9.4 at /Users/v7lin/flutter
    • Framework revision f37c235c32 (5 weeks ago), 2018-09-25 17:45:40 -0400
    • Engine revision 74625aed32
    • Dart version 2.1.0-dev.5.0.flutter-a2eb050044

[✓] Android toolchain - develop for Android devices (Android SDK 28.0.3)
    • Android SDK at /Users/v7lin/Library/Android/sdk
    • Android NDK at /Users/v7lin/Library/Android/sdk/ndk-bundle
    • Platform android-28, build-tools 28.0.3
    • ANDROID_HOME = /Users/v7lin/Library/Android/sdk
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)
    • All Android licenses accepted.

[✓] iOS toolchain - develop for iOS devices (Xcode 10.0)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 10.0, Build version 10A255
    • ios-deploy 1.9.2
    • CocoaPods version 1.5.3

[✓] Android Studio (version 3.2)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 29.1.1
    • Dart plugin version 181.5656
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)

[!] IntelliJ IDEA Community Edition (version 2018.2.1)
    • IntelliJ at /Applications/IntelliJ IDEA CE.app
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • For information about installing plugins, see
      https://flutter.io/intellij-setup/#installing-the-plugins

[✓] VS Code (version 1.28.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 2.19.0

[✓] Connected devices (1 available)
"><pre class="notranslate"><code class="notranslate">bogon:star_admin v7lin$ flutter doctor -v
[✓] Flutter (Channel beta, v0.9.4, on Mac OS X 10.13.6 17G65, locale zh-Hans-CN)
    • Flutter version 0.9.4 at /Users/v7lin/flutter
    • Framework revision f37c235c32 (5 weeks ago), 2018-09-25 17:45:40 -0400
    • Engine revision 74625aed32
    • Dart version 2.1.0-dev.5.0.flutter-a2eb050044

[✓] Android toolchain - develop for Android devices (Android SDK 28.0.3)
    • Android SDK at /Users/v7lin/Library/Android/sdk
    • Android NDK at /Users/v7lin/Library/Android/sdk/ndk-bundle
    • Platform android-28, build-tools 28.0.3
    • ANDROID_HOME = /Users/v7lin/Library/Android/sdk
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)
    • All Android licenses accepted.

[✓] iOS toolchain - develop for iOS devices (Xcode 10.0)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 10.0, Build version 10A255
    • ios-deploy 1.9.2
    • CocoaPods version 1.5.3

[✓] Android Studio (version 3.2)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 29.1.1
    • Dart plugin version 181.5656
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)

[!] IntelliJ IDEA Community Edition (version 2018.2.1)
    • IntelliJ at /Applications/IntelliJ IDEA CE.app
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • For information about installing plugins, see
      https://flutter.io/intellij-setup/#installing-the-plugins

[✓] VS Code (version 1.28.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 2.19.0

[✓] Connected devices (1 available)

</code></pre></div>
<p dir="auto">When you run <code class="notranslate">flutter create</code>, you should get an Android project that uses gradle.  Most developers will eventually need to use gradle to integrate with third-party SDKs and to add their own Java code.  We should start them off in that mode so that the transition is smooth.</p>