Android SDK API 离线文档在 android studio 上不起作用，所有包都无法下载 [英] Android SDK API offline documentation does not work on android studio , All Packages are not available for download

问题描述

我下载了android studio并安装了它下载了API 30.0.1

Hi, I downloaded android studio and installed it downloaded API 30.0.1

但是当我按 Ctrl+Q 显示内联文档时，android studio 尝试从网络中获取它online

but when I press Ctrl+Q to show inline docs, android studio try to fetch it from the network online

我需要它离线工作，我在 SDK 管理器中找不到旧选项

I need it to work offline, I can not find the old option in the SDK manager

Android SDK 文档

当我尝试导航到 android API 中的任何类或方法时 导航到源 Ctrl + L 鼠标按钮

And when I try to navigate to any class or method in android API navigate to source Ctrl + L-mouse-button

android studio 给我看

android studio show me

当我点击右上角的下载选项

and when I press on download option in the top right corner

它显示了我

这是我的 SDK 管理器

And This is My SDK Manager

项目

和build.gradle Module

And build.gradle Module

apply plugin: 'com.android.application'

android {
    compileSdkVersion 30
    buildToolsVersion "30.0.1"

    defaultConfig {
        applicationId "com.albanna.databaseworks"
        minSdkVersion 19
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: "libs", include: ["*.jar"])
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation 'androidx.recyclerview:recyclerview:1.1.0'
    implementation 'androidx.cardview:cardview:1.0.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'

}

build.gradle 项目

build.gradle Project

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:4.0.0"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

我的 SDK 文件夹

Processor   Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz, 2592 Mhz, 6 Core(s), 12 Logical Processor(s)

BIOS Mode   UEFI

Installed Physical Memory (RAM) 16.0 GB, dual-channel 2666 MHz

SSD NVME M2 3200/2500 read/write MB/S

---

所以我需要它像 IntelliJ IDE 或 Rider 一样工作，当我在任何方法上按 Ctrl+Q 时，它应该显示文档，我可以导航到源 Offline

推荐答案

我找到了解决方案

这个问题是因为谷歌还没有提供API 30的源代码，所以我只是回到 API 29，一切正常

I Found The Solution

This problem because Google does not provide the source code of API 30 yet, so I just go back to API 29, and everything work

从File → 项目结构 → 模块

然后改变

• 编译SDK版本到29
• 构建工具版本 29.0.3

另请注意:您必须选择 Source For Android 29 或您拥有的任何版本在 SDK 平台

Also notice: you must have Source For Android 29 or any version you have, selected in SDK Platforms

我从 readit 上的这个线程中注意到这个问题

这表示 Google 只会随系统发布源代码，不会随 API 发布.

And this says that Google will only release the source with the system, not with the API.

所以我回到 API 29

So I just go back to API 29

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