为Flutter插件添加依赖项会使Flutter App崩溃 [英] Adding dependencies for a Flutter plugin crashes my Flutter App

问题描述

当我按照hello-world方法创建Flutter插件并将其添加到另一个hello-world Flutter项目时，每当我尝试添加插件依赖项(使用path:的本地或使用.

我的步骤是:

1. 我创建一个新的Flutter项目，在终端中执行以下操作:

flutter create hello_world_app

2. 我在hello_world_app中添加了大资产(> 665 MB)，因为我需要在应用程序中使用它.

3. 我使用hello_world_app中的大量资产来构建和运行原型应用程序.它运行没有任何问题.

4. 我确实使用以下终端命令创建了插件:

5. 我创建了一个在终端内部编写的Flutter插件:

flutter create --org com.mycomp --template=plugin -i swift large_file_copy

6. 我对新创建的插件做了一些小的更改.我可以在两个世界(iOS和Android)上运行新创建的插件"large_file_copy".我从plugin-example文件夹运行它.一切正常.

7. 我从插件中制作了一个git repo，我提交了所有更改并将其推送到公共git repo.

但是现在，这才是出问题的地方:

8. 我尝试将插件添加到hello-world项目的依赖项中，执行以下操作:

我的"hello_world_app"的pubspec.yaml内部

dependencies:
  flutter:
    sdk: flutter
  cupertino_icons: ^0.1.2

  large_file_copy:
    git:
      url: https://github.com/XXXXX/large_file_copy.git

输出端子说:

Running "flutter packages get" in my_app...                     0.6s
exit code 0

然后我尝试运行我的项目.那就是应用崩溃的那一刻.

为什么增加插件依赖性使我的抖动项目崩溃?

实际上，我什至可以将插件包导入到我的flutter代码中并调用plugin方法.编译器此刻没有抱怨.但是，一旦我尝试构建并运行，那便是应用程序崩溃的时候...

上述方法有什么问题?

如何正确设置插件依赖项?

这是两个错误消息日志(一个用于iOS，一个用于Android world).同样，将插件依赖项添加到pubspec.yaml文件后，这些问题就会再次出现.

iOS的错误消息日志:

2018-12-23 14:32:52.179 xcodebuild[56661:1181076] [MT] PluginLoading: Required plug-in compatibility UUID D76765677-CB11-4D25-A34B-E33DB5A7C231 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/KZLinkedConsole.xcplugin' not present in DVTPlugInCompatibilityUUIDs
2018-12-23 14:32:52.179 xcodebuild[56661:1181076] [MT] PluginLoading: Required plug-in compatibility UUID D76765677-CB11-4D25-A34B-E33DB5A7C231 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/ColorSenseRainbow.xcplugin' not present in DVTPlugInCompatibilityUUIDs
2018-12-23 14:32:52.179 xcodebuild[56661:1181076] [MT] PluginLoading: Required plug-in compatibility UUID D76765677-CB11-4D25-A34B-E33DB5A7C231 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/BBUDebuggerTuckAway.xcplugin' not present in DVTPlugInCompatibilityUUIDs
2018-12-23 14:32:52.180 xcodebuild[56661:1181076] [MT] PluginLoading: Required plug-in compatibility UUID D76765677-CB11-4D25-A34B-E33DB5A7C231 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/Alcatraz.xcplugin' not present in DVTPlugInCompatibilityUUIDs
** BUILD FAILED **
Xcode's output:
↳
=== BUILD TARGET sqflite OF PROJECT Pods WITH CONFIGURATION Debug ===
/Users/user/Documents/flutter/.pub-cache/git/large_file_copy-5cc22b5c6d2345ba1ab23a44324b222c68d24ab4/ios/Classes/MyPluginName.m:2:9: fatal error: 'large_file_copy/large_file_copy-Swift.h' file not found
#import < large_file_copy/large_file_copy-Swift.h>
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
Could not build the application for the simulator.
Error launching application on iPhone XS.
Exited (sigterm)

. Android的错误消息日志:

Launching lib/main.dart on Android SDK built for x86 in debug mode...
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:packageDebug'.
> Failed to obtain compression information for entry
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 12s
Gradle task assembleDebug failed with exit code 1
Exited (sigterm)

解决方案

原来，不是插件添加就是问题！

在Flutter应用程序中拥有的大量资产是导致异常的原因.

从我将插件添加到我的应用程序那一刻起，我的Flutter应用程序崩溃几乎一定是偶然的.这是误导. (因此，我认为这样做可能也是如此-稍后，当我构建Flutter应用并添加更多代码时，可能是某种内存问题...或者您告诉我！)

一旦我删除了大笔资产(665 MB)，插件集成就会顺利进行，而不会发生任何异常.

该问题的难度转为另一个stackoverflow问题:

I add a large asset (> 665 MB) to my hello_world_app since I will need it inside my app.

I build and run a prototype app using my large asset inside hello_world_app. It runs without any problems.

I did create the plugin using the following terminal command:

I create a Flutter plugin writing inside a terminal:

flutter create --org com.mycomp --template=plugin -i swift large_file_copy

6. I do some minor changes to the newly created plugin. I can run the newly created plugin "large_file_copy" on both worlds (iOS and Android). I run it from the plugin-example folder. All works well.

7. I make a git repo out of the plugin and I commit all changes and push it to a public git repo.

But now, that's when things go wrong:

8. I try to add the plugin to the dependencies of my hello-world project, doing the following:

Inside pubspec.yaml of my "hello_world_app"

dependencies:
  flutter:
    sdk: flutter
  cupertino_icons: ^0.1.2

  large_file_copy:
    git:
      url: https://github.com/XXXXX/large_file_copy.git

The output terminal sais:

Running "flutter packages get" in my_app...                     0.6s
exit code 0

Then I try to run my project. And that's the moment the App crashes.

WHY IS ADDING THE PLUGIN DEPENDENCY MAKE MY FLUTTER PROJECT CRASH ??

In fact, I can even import the plugin-package to my flutter code and call the plugin method. The compiler does not complain at this moment. But as soon as I try to build and run, that's when the app crashes...

What is wrong in the above approach ??

How do I correctly set the plugin dependency ??

Here are the two error message-logs (one for iOS and one for Android world). Again, these occur as soon as the plugin dependency is added to the pubspec.yaml file....

Error message-log for iOS:

2018-12-23 14:32:52.179 xcodebuild[56661:1181076] [MT] PluginLoading: Required plug-in compatibility UUID D76765677-CB11-4D25-A34B-E33DB5A7C231 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/KZLinkedConsole.xcplugin' not present in DVTPlugInCompatibilityUUIDs
2018-12-23 14:32:52.179 xcodebuild[56661:1181076] [MT] PluginLoading: Required plug-in compatibility UUID D76765677-CB11-4D25-A34B-E33DB5A7C231 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/ColorSenseRainbow.xcplugin' not present in DVTPlugInCompatibilityUUIDs
2018-12-23 14:32:52.179 xcodebuild[56661:1181076] [MT] PluginLoading: Required plug-in compatibility UUID D76765677-CB11-4D25-A34B-E33DB5A7C231 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/BBUDebuggerTuckAway.xcplugin' not present in DVTPlugInCompatibilityUUIDs
2018-12-23 14:32:52.180 xcodebuild[56661:1181076] [MT] PluginLoading: Required plug-in compatibility UUID D76765677-CB11-4D25-A34B-E33DB5A7C231 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/Alcatraz.xcplugin' not present in DVTPlugInCompatibilityUUIDs
** BUILD FAILED **
Xcode's output:
↳
=== BUILD TARGET sqflite OF PROJECT Pods WITH CONFIGURATION Debug ===
/Users/user/Documents/flutter/.pub-cache/git/large_file_copy-5cc22b5c6d2345ba1ab23a44324b222c68d24ab4/ios/Classes/MyPluginName.m:2:9: fatal error: 'large_file_copy/large_file_copy-Swift.h' file not found
#import < large_file_copy/large_file_copy-Swift.h>
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
Could not build the application for the simulator.
Error launching application on iPhone XS.
Exited (sigterm)

. Error message-log for Android:

Launching lib/main.dart on Android SDK built for x86 in debug mode...
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:packageDebug'.
> Failed to obtain compression information for entry
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 12s
Gradle task assembleDebug failed with exit code 1
Exited (sigterm)

解决方案

Turns out that not the plugin-adding is the problem !

It is rather my large asset that I have inside the Flutter app that causes the exception.

And it must be more or less a coincidence that my Flutter app crashes from the moment I add the plugin to my app. It was misleading. (I therefore assume that it might have done so as well - later when I build-up my Flutter app and add more code. It might be a memory issue of some sort...or you tell me!)

As soon as I remove my large asset (665 MB), the plugin integration works smoothly without any exception.

The question shifts tough to another stackoverflow question: How to integrate a large asset in my Flutter app

And this query can be closed.

这篇关于为Flutter插件添加依赖项会使Flutter App崩溃的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！