如何解决Flutter 无法使用 webview 显示本地文件
我正在尝试使用 webview 显示本地文件(如果有其他选项,欢迎使用,但我想显示的不仅仅是 pdf。我想显示 pdf、xlsx、docx)。
我使用 file://...
提供 url,首先它给了我 Flutter_webview_plugin
和 webview_Flutter
插件的访问被拒绝错误。然后我编辑了两个插件的源代码并根据 https://webdriver.io/docs/customreporter 参考将 setAllowFileAccessFromFileURLs
配置为 true 但这次它只向我显示白色空白页。并且控制台中有奇怪的警告(甚至在我编辑源代码之前就显示了这个警告。)
警告:
W/m.packagename(31636): Couldn't lock the profile file /data/user/0/packagename/app_tbs_64/core_share/oat/tbs_sdk_extension_dex.jar.cur.prof: Failed to open file '/data/user/0/packagename/app_tbs_64/core_share/oat/tbs_sdk_extension_dex.jar.cur.prof': No such file or directory W/m.gekapp.gekap(31636): Could not forcefully load profile /data/user/0/packagename/app_tbs_64/core_share/oat/tbs_sdk_extension_dex.jar.cur.prof
我在手机上使用 Android 11,我认为这可能是问题所在。 (在 iOS 上没有问题我可以使用 file://...
显示文件)
Flutter doctor --verbose
[✓] Flutter (Channel stable,2.2.0,on macOS 11.3 20E232 darwin-arm,locale en-TR)
• Flutter version 2.2.0 at /Users/burakcabadan/development/Flutter
• Framework revision b22742018b (4 weeks ago),2021-05-14 19:12:57 -0700
• Engine revision a9d88a4d18
• Dart version 2.13.0
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
• Android SDK at /Users/burakcabadan/Library/Android/sdk
• Platform android-30,build-tools 30.0.3
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 12.5,Build version 12E262
• CocoaPods version 1.10.1
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 4.1)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
? https://plugins.jetbrains.com/plugin/9212-Flutter
• Dart plugin can be installed from:
? https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)
[✓] IntelliJ IDEA Ultimate Edition (version 2021.1)
• IntelliJ at /Applications/IntelliJ IDEA.app
• Flutter plugin version 55.1.5
• Dart plugin version 211.7233
[✓] VS Code (version 1.56.2)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.23.0
[✓] Connected device (2 available)
• macOS (desktop) • macos • darwin-arm64 • macOS 11.3 20E232 darwin-arm
• Chrome (web) • chrome • web-javascript • Google Chrome 91.0.4472.77
• No issues found!
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