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Flutter Errors

Failed to create platform view rendering surface​

[VERBOSE-2:platform_view.cc(85)] Failed to create platform view rendering surface

Failed to create platform view rendering surface · Issue #70811 · flutter/flutter

iOS 15 simulator on macOS 12 beta 2 launches with blank screen, "Failed to create platform view rendering surface" · Issue #85749 · flutter/flutter

Failed to create platform view rendering surface · Issue #88168 · flutter/flutter

以上三条信息最终指向的解决方式是 Xcode 的 bug，造成了误导。

This is fixed as of Xcode 13 beta 5. Closing.

最终发现原因是，我改了 storyboard 里的视图控制器的 Custom Class（由 FlutterViewController 改成了 MyFlutterViewController），并且，MyFlutterViewController 的 viewDidLoad 方法里没有调用 [super viewDidLoad]，导致视图无法正确加载……

Dart SDK is not configed​

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删掉根目录下的 .idea 目录，重新按照官网教程做一遍就好了。

Set up an editor | Flutter

注意 Dart SDK 要用这个路径呀：

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MissingPluginException​

MissingPluginException(No implementation found for method getTemporaryDirectory on channel plugins.flutter.io/path_provider)

因为不是一个引擎。

通过创建 FlutterViewController 来展示 flutter 页面，会隐式创建一个新的引擎。等于在主引擎做的注册插件和通道，在新的引擎都没有。

There are multiple observatory ports available.​

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Failed to create datagram socket​

Oops; flutter has exited unexpectedly: "SocketException: Failed to create datagram socket (OS Error: Address already in use, errno = 48), address = , port = 5353".

开启了远程桌面 NoMachine 服务导致的，关闭后问题解决。

MediaQuery​

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MediaQuery 获取屏幕宽度为 0 的原因。

LFS​

Encountered 30 files that should have been pointers, but weren't:

git lfs uninstall
git lfs install

iOS 14 以上 Debug 包无法从桌面启动​

Launching debug Flutter without a host computer ios 14.5 not working · Issue #87034 · flutter/flutter

App crashes on launch on physical iOS 14 device in debug mode when debugger not attached, EXC_BAD_ACCESS (SIGKILL - CODESIGNING) · Issue #60657 · flutter/flutter

pub get failed​

  1. 在 flutter pub get 之前运行一下 flutter doctor 命令，让它去下载 flutter_tools 即可
  2. 建议机器上面装了新版 flutter 后可以运行 flutter doctor 让它自动安装一些依赖，避免每次执行都安装

PlatformView 点击事件透传​

webview response to gesture from the widget above it · Issue #58659 · flutter/flutter

IgnorePointer doesn't work properly when wrapped around a webview running JS (ex. google maps) · Issue #100020 · flutter/flutter

50431040/flutter_gromore: flutter 插件：穿山甲 Gromore 广告插件

Flutter 原生广告优化 -- 点击穿透

Skia 渲染 emoji 崩溃​

App crashes when rendering emoji text · Issue #107509 · flutter/flutter · GitHub

[Windows] Crash when rendering text with some special characters · Issue #109825 · flutter/flutter · GitHub

add-to-app 模式下改 dart 代码不生效​

img

beta 版本设置高刷崩溃​

img

都是在 beta 版本：

img

Attaching to running flutter process doesn't highlight source paused on​

Attaching to running flutter process doesn't highlight source paused on

img

xargs: dart: No such file or directory​

代码自动格式化时遇到的错误。

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最后发现是 git 工具没有把 .zshrc 里的路径读进来，导致 dart 命令找不到。

if [[ ! $PATH =~ "flutter" ]]; then
    if [ -f "$HOME/.bashrc" ]; then
        echo '载入.bashrc'
        source $HOME/.bashrc
    fi
    if [ -f "$HOME/.zshrc" ]; then
        echo '载入.zshrc'
        source $HOME/.zshrc
    fi
fi

IO thread's priority​

Thread priority changes make app more easily to be stuck in production · Issue #107351 · flutter/flutter · GitHub

Increase IO thread's priority on iOS to avoid stucks by Yeatse · Pull Request #34568 · flutter/engine · GitHub

setThreadPriority: | Apple Developer Documentation：0 为最低，1 为最高。

FlutterEngine.mm
switch (config.priority) {
    case fml::Thread::ThreadPriority::BACKGROUND: {
      [[NSThread currentThread] setThreadPriority:0];
      break;
    }
    case fml::Thread::ThreadPriority::NORMAL: {
      [[NSThread currentThread] setThreadPriority:0.5];
      break;
    }
    case fml::Thread::ThreadPriority::RASTER:
    case fml::Thread::ThreadPriority::DISPLAY: {
      [[NSThread currentThread] setThreadPriority:1.0];
      break;
    }
}

Unexpected top padding in ListView put inside scaffold with no appBar​

Unexpected top padding in ListView put inside scaffold with no appBar · Issue #14842 · flutter/flutter

ListView automatically adds SafeArea and there's no way to remove it · Issue #21236 · flutter/flutter

源码解释：

/// By default, [ListView] will automatically pad the list's scrollable
/// extremities to avoid partial obstructions indicated by [MediaQuery]'s
/// padding. To avoid this behavior, override with a zero [padding] property.
///

Android Studio 断点断不上​

重启 Android Studio 好了，但是有些函数某些行还是会断点断不上。

type 'int' is not a subtype of type 'double'​

涉及到终端到 Flutter 数据传递时，不要随便改数据类型，这个值是 Android 终端传的，iOS 直接改了没验证，结果启动页面就 exception

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An error occurred while processing the post-install hook of the Podfile​

Issue: Error running pod install, undefined local variable or method 'continue' for #<Pod::Podfile:0x00000001095c1188 @defined_in_file=#<Pathname:/path/to/ios/Podfile> · Issue #104118 · flutter/flutter

fix: continue->next in Ruby script by jmagman · Pull Request #104296 · flutter/flutter

Incorrect use of ParentDataWidget​

Under ListView don't use Spacer Widget.

Expanded cannot be used inside a Stack. You should use Expanded only within a Column, Row or Flex.

Waiting for connection​

重新 make ios-debug DART_ONLY=1 再 make ios-attach 就可以连上了。

RenderConstrainedBox object was given an infinite size during layout.​

有个需求，需要在 Column 中放个 Webview，用到 RenderUiKitView，根据错误信息描述，原因是在渲染控件时，WebView 是无限大的，在 Column 中是不允许这样的。我们只需要使用 Expanded 将其包裹即可。

App.framework 如何符号化​

img

bugly 上 App.framework 看不到符号

Feat: dSYM debug info for iOS & macOS builds by vaind · Pull Request #101586 · flutter/flutter

type 'FlexParentData' is not a subtype of type 'StackParentData' in type cast​

调用栈顶：#0 Positioned.applyParentData (package:flutter/src/widgets/basic.dart:4068)

原因：Row 里面用了 Positioned。注意：

  1. Under ListView don't use Spacer Widget
  2. don't use Positioned under Row or Column
  3. Expanded can only use it must be a descendant of Column, Row, Flex