flutter 遇到问题或者配置汇总，学习中

1.中国配置

flutter要在环境变量里面配置，类似如下

JAVA_HOME：F:\java\jdk1.8.0_251

ANDROID_HOME：D:\androidsdk

FLUTTER_STORAGE_BASE_URL：storage.flutter-io.cn

PUB_HOSTED_URL：pub.flutter-io.cn

path里面增加：D:\flutter\bin和%ANDROID_HOME%\platform-tools、%ANDROID_HOME%\build-tools、%ANDROID_HOME%\cmdline-tools\latest\bin、%JAVA_HOME%\bin

Android的sdk可以下个Android Studio在里面下载，需要梯子

项目里面android里面build.gradle里面注释掉谷歌和mavenCentral，改下下面3个

buildscript {
    ext.kotlin_version = '1.7.10'
    repositories {
//        google()
//        mavenCentral()
        maven { url 'https://maven.aliyun.com/repository/google' }
        maven { url 'https://maven.aliyun.com/repository/jcenter' }
        maven { url 'https://maven.aliyun.com/nexus/content/groups/public' }
    }

    dependencies {
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

allprojects {
    repositories {
//        google()
//        mavenCentral()
        maven { url 'https://maven.aliyun.com/repository/google' }
        maven { url 'https://maven.aliyun.com/repository/jcenter' }
        maven { url 'https://maven.aliyun.com/nexus/content/groups/public' }
    }
}

flutter安装路径里面的D:\flutter\packages\flutter_tools\gradle的resolve_dependencies.gradle里面改下

repositories {
//    google()
//    mavenCentral()
    maven { url 'https://maven.aliyun.com/repository/google' }
    maven { url 'https://maven.aliyun.com/repository/jcenter' }
    maven { url 'https://maven.aliyun.com/nexus/content/groups/public' }
    maven {
//        url "$storageUrl/${engineRealm}download.flutter.io"
        url "https://storage.flutter-io.cn/download.flutter.io"
    }
}

如果内存不够可以设置android:largeHeap="true"，在项目的D:\flutterproject\testfll\android\app\src\main里面有个AndroidManifest.xml改

<manifest xmlns:android="http://schemas.android.com/apk/res/android">
    <application
        android:label="testfll"
        android:name="${applicationName}"
        android:icon="@mipmap/ic_launcher"
        android:largeHeap="true">
        更多东西

项目里面android里面gradle.properties也可以分配最大jvm内存，Xmx4G

org.gradle.jvmargs=-Xmx4G
android.useAndroidX=true
android.enableJetifier=true

2.flutter升级或者查看版本这些

flutter --version --verbose 查看版本

flutter upgrade --verbose 升级到新版本

flutter doctor 看配置有没有问题，如果只开发app下面这种是没问题的

--verbose 是看具体进度的