Flutter Packages development practice - Release failure resolved

Flutter Packages development practice – Release failure resolved

The library of Flutter is managed as a package. Package is divided into two types, Dart Package (also called Library Package) and Plugin Package. When we say Fluter package, we also mean Dart package, which can only use Dart and Flutter apis. When we say the Flutter plugin, we mean the plugin package. The Flutter plugin usually contains platform-specific code. To the user of the package, there is no difference.

Here we create a package and publish it to the DART repository.

1. Package development process

Create a New Flutter Package project using Android Studio

The specific process is as follows:

On the menu, choose File -> New -> New Flutter Project.
Select Flutter Package in the panel that pops up and click Next.
Fill in the relevant information of the package. Just fill in our Project Name for Project Name, and fill in other information as required.

The details are shown below.

Specific business development

Next we can write our own code in the lib/ package.

The focus of this article is not here. For more information about Flutter, please refer to the Package API plugin for Flutter.

2. Fill in the upload information

Enter the user name, email address, and personal homepage information

Before uploading, we need to complete the local configuration information in the pubspec.yaml file. When we use AS to create a new project, the corresponding information has been automatically generated in this file, and we only need to fill in the user name, personal email and home page address.

name: flutter_lifecycle_state
description: Make State support lifecycle method just like Android&#x27; Activity#onCreate, Activity#onResume, Activity#onPause, Activity#onDestroy.Version: 0.0.1 Author: Tinytongtong <[email protected]> Homepage: https://blog.csdn.net/qq_26287435Copy the code

The values of the Name and Description fields here are the information entered in the New Package dialog.

The version field is used to issue a new version, increment the version number each time you issue a new version.

In the Author field, fill in the author name and the available Google email in the format of username. Note that this Gmail needs to be usable.

In the field of homepage, enter the URL of your homepage. In this case, enter my CSDN homepage.

LICENSE file

In addition, packages published to Pub need to include a LICENSE file, and the easiest way to do this is to select one when creating a repository on GitHub.

I pasted this from a new Github project.

Check the package configuration

To check the configuration of the package, run the following command at the root of the project:

flutter packages pub publish --dry-run
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If there are no problems, the output is as follows:

. Package has 0 warnings.Copy the code

Publish a package

Publish the package as in the previous step, but without the –dry-run argument:

flutter packages pub publish
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If this is your first Posting, you will be prompted to verify your Google account. The Google account starts with “HTTPS:” and ends with “. Email “to prevent page opening errors due to incomplete addresses.

Successful matches package is displayed after the file is uploaded.

Looks great! Are you ready to upload your package (y/n)? y Pub needs your authorization to upload packages on your behalf. In a web browser, go to https://accounts.google.com/o/oauth2/auth?access_type=offline&approval_prompt=force&response_type=code&client_id=xxxxxxx xxxxxxx-8grd2eg9tj9f38os6f1urbcvsq399u8n.apps.googleusercontent.com&redirect_uri=http%3A%2F%2Flocalhost%3A52589&scope=ht tps%3A%2F%2Fwww.googleapis.com%2Fauth%2Fuserinfo.email Then click"Allow access".

Waiting for your authorization...
Successfully authorized.
Uploading...
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Of course, most of the time you’re reporting errors, but if it were that simple, I wouldn’t be writing this article. Don’t panic. Keep reading.

3. Common errors during release

Remove target from host filePUB_HOSTED_URL,FLUTTER_STORAGE_BASE_URLModifications.

If you see this error as shown in the first line below, you will need to remove the changes to PUB_HOSTED_URL and FLUTTER_STORAGE_BASE_URL from the official guidelines, which will cause uploading the PUB to fail. Github.com/flutter/flu…

The new host is as follows: Refresh the terminal.

# flutter
#export PUB_HOSTED_URL=https://pub.flutter-io.cn
#export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn
export PWD=/Users/tinytongtong/Documents/workspace/flutter/sdk/flutter/bin
export PATH="${PWD}:${PATH}"
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No open agent in general if you do not haveBring your own ladderIf you do, you’ll see that the upload step is stuck here differently. As shown below.

TinytongtongdeMacBook -Pro% flutter Packages pub publish Publishing Flutter_lifecycle_state 0.0.1 to https://pub.flutter-io.cn: ... Looks great! Are you ready to upload your package (y/n)? y Uploading...Copy the code

If you press enter, the following error message will appear:

Looks great! Are you ready to upload your package (y/n)? y
Uploading...

Unhandled exception:
SocketException: Write failed (OS Error: Broken pipe, errno = 32), port = 0
#0 _rootHandleUncaughtError.
      
        (dart:async/zone.dart:1112:29)
      
#1 _microtaskLoop (dart:async/schedule_microtask.dart:41:21)
#2 _startMicrotaskLoop (dart:async/schedule_microtask.dart:50:5)
#3 _runPendingImmediateCallback (dart:isolate/runtime/libisolate_patch.dart:115:13)
#4 _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:172:5)
tinytongtongdeMacBook-Pro% 
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The root cause of this error is that the agent was not opened.

openedlanternThe agent.

If you already have an agent, such as lantern, on, you may see the following error:

Bogon % flutter packages pub publish Publishing flutter_lifecycle_state 0.0.1 to https://pub.dartlang.org:... Looks great! Are you ready to upload your package (y/n)? y Pub needs your authorization to upload packages on your behalf. In a web browser, go to https://accounts.google.com/o/oauth2/auth?access_type=xx1urbcvsq39xxe=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fuserinfo .email Then click"Allow access".

Waiting for your authorization...
Authorization received, processing...
It looks like accounts.google.com is having some trouble.
Pub will wait for a while before trying to connect again.
OS Error: Operation timed out, errno = 60, address = accounts.google.com, port = 58913
pub finished with exit code 69
bogon%
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Or something like this:

Waiting for your authorization...
Authorization received, processing...
Connection closed before full header was received
pub finished with exit code 69
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The root cause of these two errors is that you need to set up a proxy for the terminal, which is the command line proxy.

4. Final solution — command line wall climbing tool

Update: Using the Lantern to set the proxy for the TERMINAL Go to the MAC address to set the proxy for the terminal using the lantern.

One solution is recommended: Use Proxifier + SS on the MAC terminal.

Proxifier+Shadowshocks system the correct posture of global proxy

ss X

Follow the tutorial to download the configuration.

Command line proxy success verification mode:

If you have a successful palindrome (a text message in HTML format), you have succeeded. If you have no successful palindrome, your terminal is still inside the wall

Curl google.com = google.com = google.com = google.com = google.com

tinytongtongdeMacBook-Pro% curl google.com            
<HTML><HEAD><meta http-equiv="content-type" content="text/html; charset=utf-8">
<TITLE>301 Moved</TITLE></HEAD><BODY>
<H1>301 Moved</H1>
The document has moved
<A HREF="http://www.google.com/">here</A>.
</BODY></HTML>
tinytongtongdeMacBook-Pro% 

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An example of a successful upload

After all the problems have been resolved, the flutter packages pub publish command returns the following output:

TinytongtongdeMacBook -Pro% flutter Packages pub publish Publishing Flutter_lifecycle_state 0.0.2 to https://pub.dartlang.org: |-- .gitignore |-- .idea | |-- codeStyles | |'-- Project.xml | |-- dbnavigator.xml | |-- encodings.xml | |-- libraries | | |-- Dart_Packages.xml | | |-- Dart_SDK.xml | | '-- Flutter_Plugins.xml
|   |-- markdown-navigator
|   |   '-- profiles_settings.xml | |-- markdown-navigator.xml | |-- misc.xml | |-- modules.xml | |-- vcs.xml | '-- workspace.xml
|-- .metadata
|-- CHANGELOG.md
|-- LICENSE
|-- README.md
|-- android
|   |-- app
|   |   '-- src | | '-- main
|   |           '-- java | | '-- io
|   |                   '-- flutter | | '-- plugins
|   |                           '-- GeneratedPluginRegistrant.java | '-- local.properties
|-- lib
|   '-- flutter_lifecycle_state.dart
|-- pubspec.yaml
'-- test
    '-- flutter_lifecycle_state_test.dart Looks great! Are you ready to upload your package (y/n)? y Uploading... Successfully uploaded package. tinytongtongdeMacBook-Pro%Copy the code

When you publish successfully, you will receive a notification email on Gmail with a link to your project like this:

reference

Learn guide to Flutter: Encapsulate API plugin – Says Yu Gang

Failed to publish the Flutter pub

Failed to upload the package #16658

Publish plugin in china #17070

zhuanlan.zhihu.com/p/60136574

Flutter Packages development practice – Release failure resolved