Flutter--＞Namespace not specified.

更新Android gradle 7.5.0之后, 运行项目会出现Namespace not specified.问题, 这里出一个我的解决方案.

由于很多库都不可能及时更新适配gradle 7.5.0, 所以可以等pub get将子库拉取到本地之后, 在本地手动添加namespace属性,即可解决本文问题.

作为程序猿,那肯定不可能手动修改, 这种体力活是干不会的.

祭出本文干货dart脚本:

import 'dart:convert';
import 'dart:io';import 'package:yaml/yaml.dart';///
/// Email:angcyo@126.com
/// @author angcyo
/// @date 2024/10/08
///
/// 更新Gradle到7.5.0之后, 需要指定namespace属性, 不指定会报错.
/// ```
/// Namespace not specified.
/// ```
///
/// ```
/// android {
///     if (project.android.hasProperty("namespace")) {
///         namespace 'com.angcyo.xxx'
///     }
/// }
/// ```
///
/// 此脚本用于在`build.gradle`文件的`android{ ... }`中加入`namespace`属性.
///
void main() async {final currentPath = Directory.current.path;print('脚本工作路径->$currentPath');//读取yaml配置信息final localYamlFile = File("$currentPath/script.local.yaml2");final yamlFile = File("$currentPath/script.yaml2");final localYaml = loadYaml(localYamlFile.existsSync() ? localYamlFile.readAsStringSync() : "");final yaml =loadYaml(yamlFile.existsSync() ? yamlFile.readAsStringSync() : "");//---// 需要修改库的名字集合, 不指定全部// [YamlList]final names =yaml?["androidNamespaceNames"] ?? localYaml?["androidNamespaceNames"];//获取所有依赖的子库final dependenciesFile = File("$currentPath/.flutter-plugins-dependencies");final androidDependencies =jsonDecode(dependenciesFile.readAsStringSync())?["plugins"]?["android"];if (androidDependencies is List) {//{//    "name": "device_info_plus",//    "path": "/Users/angcyo/.pub-cache/hosted/pub.dev/device_info_plus-10.1.1/",//    "native_build": true,//    "dependencies": []// },int index = 0;for (final dependency in androidDependencies) {final name = dependency["name"];final path = dependency["path"];if (path != null) {if (names == null || names.contains(name)) {final namespace = getPackageFromAndroidManifest(path);if (namespace != null) {colorLog("正在添加[${index + 1}/${androidDependencies.length}]->$path -> namespace:$namespace");appendNamespace(path, namespace);} else {colorLog("未找到[package]信息, 请检查[${getAndroidManifestPath(path)}]文件.");}}}index++;}} else {colorLog("未找到子模块的依赖信息, 请检查[${dependenciesFile.path}]文件.");}
}/// 核心修改方法
/// 添加flutter子库android工程中`build.gradle`文件加入`namespace`
/// [flutterPath] flutter工程子库根路径
void appendNamespace(String flutterPath, String namespace) {final androidPath = "$flutterPath/android";final androidPathFile = File("$androidPath/build.gradle");if (androidPathFile.existsSync()) {final androidPathFileContent = androidPathFile.readAsStringSync();if (!androidPathFileContent.contains("namespace")) {//修改 android {final newContent = androidPathFileContent.replaceAllMapped(RegExp(r"android *{ *"), (match) {return 'android { \n    if (project.android.hasProperty("namespace")) namespace "$namespace" //by angcyo ${DateTime.now()}\n';});//写入文件androidPathFile.writeAsStringSync(newContent);colorLog("修改成功->$androidPathFile", 250);} else {colorLog("跳过已存在[namespace]信息 -> ${androidPathFile.path}");}}
}/// 获取AndroidManifest.xml文件路径
String getAndroidManifestPath(String flutterPath) {return "$flutterPath/android/src/main/AndroidManifest.xml";
}/// 从`AndroidManifest.xml`文件中获取`package`
String? getPackageFromAndroidManifest(String flutterPath) {final androidManifestFile = File(getAndroidManifestPath(flutterPath));if (androidManifestFile.existsSync()) {final content = androidManifestFile.readAsStringSync();final package = RegExp(r'package=\"(.*?)\"').firstMatch(content)?.group(1);return package;}return null;
}void colorLog(dynamic msg, [int col = 93]) {print('\x1B[38;5;${col}m$msg');
}