<h2 dir="auto">Steps to Reproduce</h2>
<p dir="auto">When the keyboard appears, the bottomNavigationBar in the Scaffold not stay at the bottom and a keyboard height is added to it.</p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/32248/35469528-43737b7e-0371-11e8-9ee2-dbfdd881c8e2.png"><img src="https://user-images.githubusercontent.com/32248/35469528-43737b7e-0371-11e8-9ee2-dbfdd881c8e2.png" alt="image" style="max-width: 100%;"></a></p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/32248/35469531-4ede4b9c-0371-11e8-8a98-2d18dc10687d.png"><img src="https://user-images.githubusercontent.com/32248/35469531-4ede4b9c-0371-11e8-8a98-2d18dc10687d.png" alt="image" style="max-width: 100%;"></a><br>
<a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/32248/35469533-53af0b16-0371-11e8-8fbd-e43486936015.png"><img src="https://user-images.githubusercontent.com/32248/35469533-53af0b16-0371-11e8-8fbd-e43486936015.png" alt="image" style="max-width: 100%;"></a></p>
<h2 dir="auto">Flutter Doctor</h2>
<p dir="auto">[✓] Flutter (on Mac OS X 10.13.3 17D47, locale zh-Hans-CN, channel alpha)<br>
• Flutter at /Users/tsangpo/workspace/sdk/flutter<br>
• Framework revision <a class="commit-link" data-hovercard-type="commit" data-hovercard-url="https://github.com/flutter/flutter/commit/8f65fec5f5f7d7afbb0965f4a44bdb330a28fb19/hovercard" href="https://github.com/flutter/flutter/commit/8f65fec5f5f7d7afbb0965f4a44bdb330a28fb19"><tt>8f65fec</tt></a> (7 weeks ago), 2017-12-12 09:50:14 -0800<br>
• Engine revision <a class="commit-link" data-hovercard-type="commit" data-hovercard-url="https://github.com/flutter/flutter/commit/edaecdc8b8098f20512c23745b9d0b135a8ee56d/hovercard" href="https://github.com/flutter/flutter/commit/edaecdc8b8098f20512c23745b9d0b135a8ee56d"><tt>edaecdc</tt></a><br>
• Tools Dart version 1.25.0-dev.11.0<br>
• Engine Dart version 2.0.0-edge.d8ae797298c3a6cf8dc9f4558707bd2672224d3e</p>
<p dir="auto">[✓] Android toolchain - develop for Android devices (Android SDK 27.0.0)<br>
• Android SDK at /Users/tsangpo/workspace/sdk/android-sdk<br>
• Android NDK at /Users/tsangpo/workspace/sdk/android-sdk/ndk-bundle<br>
• Platform android-27, build-tools 27.0.0<br>
• ANDROID_HOME = /Users/tsangpo/workspace/sdk/android-sdk<br>
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java<br>
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b08)</p>
<p dir="auto">[-] iOS toolchain - develop for iOS devices (Xcode 9.2)<br>
• Xcode at /Applications/Xcode.app/Contents/Developer<br>
• Xcode 9.2, Build version 9C40b<br>
✗ libimobiledevice and ideviceinstaller are not installed. To install, run:<br>
brew install --HEAD libimobiledevice<br>
brew install ideviceinstaller<br>
✗ ios-deploy not installed. To install:<br>
brew install ios-deploy<br>
• CocoaPods version 1.4.0</p>
<p dir="auto">[✓] Android Studio (version 3.0)<br>
• Android Studio at /Applications/Android Studio.app/Contents<br>
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b08)</p>
<p dir="auto">[✓] IntelliJ IDEA Community Edition (version 2017.3.3)<br>
• Flutter plugin version 21.0.3<br>
• Dart plugin version 173.4301.22</p>
<p dir="auto">[-] Connected devices<br>
• None</p>
<h2 dir="auto">Steps to Reproduce</h2>
<ul dir="auto">
<li>Tap the TextField</li>
<li>You'll notice the entire page is pushed up when the soft keyboard shows up</li>
</ul>
<p dir="auto">Gist: <a href="https://gist.github.com/silverAndroid/eb40f5faaa2d8a0296baf2f9c337ec2b">https://gist.github.com/silverAndroid/eb40f5faaa2d8a0296baf2f9c337ec2b</a></p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://camo.githubusercontent.com/8110c7ddaaab457abaf6a1e8ad654795600e0c66aea3293a6c38d98f2aaa8d0b/68747470733a2f2f7468756d62732e6766796361742e636f6d2f506f736974697665496d7065636361626c654571756573747269616e2d6d61782d31346d622e676966"><img src="https://camo.githubusercontent.com/8110c7ddaaab457abaf6a1e8ad654795600e0c66aea3293a6c38d98f2aaa8d0b/68747470733a2f2f7468756d62732e6766796361742e636f6d2f506f736974697665496d7065636361626c654571756573747269616e2d6d61782d31346d622e676966" alt="" data-animated-image="" data-canonical-src="https://thumbs.gfycat.com/PositiveImpeccableEquestrian-max-14mb.gif" style="max-width: 100%;"></a></p>
<h2 dir="auto">Logs</h2>
<p dir="auto">No exception.</p>
<h2 dir="auto">Flutter Doctor</h2>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="[√] Flutter (on Microsoft Windows [Version 10.0.15063], locale en-US, channel master)
    • Flutter at D:\dev\SDKs\flutter
    • Framework revision 51ab5f36c6 (14 hours ago), 2017-12-08 20:39:56 -0800
    • Engine revision edb0201fa2
    • Tools Dart version 1.25.0-dev.11.0
    • Engine Dart version 2.0.0-edge.a38ac7cf127f4611c873c2f2d523c06ce06b1342

[√] Android toolchain - develop for Android devices (Android SDK 26.0.2)
    • Android SDK at D:\dev\SDKs\android-sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-26, build-tools 26.0.2
    • ANDROID_HOME = D:\dev\SDKs\android-sdk
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)

[√] Android Studio (version 3.0)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)

[√] IntelliJ IDEA Ultimate Edition (version 2017.3)
    • Flutter plugin version 20.0.3
    • Dart plugin version 173.3727.108

[√] Connected devices
    • LG H915 • LGH9157e1e3243 • android-arm • Android 7.0 (API 24)"><pre class="notranslate"><code class="notranslate">[√] Flutter (on Microsoft Windows [Version 10.0.15063], locale en-US, channel master)
    • Flutter at D:\dev\SDKs\flutter
    • Framework revision 51ab5f36c6 (14 hours ago), 2017-12-08 20:39:56 -0800
    • Engine revision edb0201fa2
    • Tools Dart version 1.25.0-dev.11.0
    • Engine Dart version 2.0.0-edge.a38ac7cf127f4611c873c2f2d523c06ce06b1342

[√] Android toolchain - develop for Android devices (Android SDK 26.0.2)
    • Android SDK at D:\dev\SDKs\android-sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-26, build-tools 26.0.2
    • ANDROID_HOME = D:\dev\SDKs\android-sdk
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)

[√] Android Studio (version 3.0)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)

[√] IntelliJ IDEA Ultimate Edition (version 2017.3)
    • Flutter plugin version 20.0.3
    • Dart plugin version 173.3727.108

[√] Connected devices
    • LG H915 • LGH9157e1e3243 • android-arm • Android 7.0 (API 24)
</code></pre></div>