我在#9280遇到了同样的问题。我使用/不使用用于脚手架和表格的GlobalKey尝试了该主题的所有解决方案，但问题并未解决。 我试图用登录和注册来构建身份验证表单。但是，当我第一次点击TextFormField时，键盘没有显示。然后，我尝试从物理键盘输入一些字母，然后重新构建小部件。像这样： login screen
当我运行flutter run --verbose时，没有什么可记录的，所以我手动进行了记录。每次点击字段时，该小部件都称为dispose-> init-> build。
from datetime import datetime
year = datetime.now().year
我的代码：
[√] Flutter (Channel beta, v1.0.0, on Microsoft Windows [Version 10.0.17763.195], locale en-US)
• Flutter version 1.0.0 at D:\flutter
• Framework revision 5391447fae (5 weeks ago), 2018-11-29 19:41:26 -0800
• Engine revision 7375a0f414
• Dart version 2.1.0 (build 2.1.0-dev.9.4 f9ebf21297)
[√] Android toolchain - develop for Android devices (Android SDK 28.0.3)
• Android SDK at C:\Users\PeterHo\AppData\Local\Android\sdk
• Android NDK location not configured (optional; useful for native profiling support)
• Platform android-28, build-tools 28.0.3
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)
• All Android licenses accepted.
[√] Android Studio (version 3.2)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin version 29.1.1
• Dart plugin version 181.5656
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)
[√] VS Code, 64-bit edition (version 1.30.1)
• VS Code at C:\Program Files\Microsoft VS Code
• Flutter extension version 2.21.1
[√] Connected device (1 available)
• Android SDK built for x86 • emulator-5554 • android-x86 • Android 9 (API 28) (emulator)
• No issues found!