Jetpack compose 编译器无法解析答案

【问题标题】：Jetpack compose compiler cannot be resolvedJetpack compose 编译器无法解析
【发布时间】：2021-06-22 08:41:29
【问题描述】：

我尝试将 jetpack compose 添加到现有项目中。我在我的 gradle 文件中添加了 jetpack compose：

buildFeatures {
     compose = true
}
compileOptions {
    sourceCompatibility = JavaVersion.VERSION_1_8
    targetCompatibility = JavaVersion.VERSION_1_8
}

kotlinOptions { jvmTarget = "1.8" }

composeOptions {
    kotlinCompilerExtensionVersion composeVersion
}

//to the dependencies
implementation "androidx.compose.compiler:compiler:$composeVersion"
    // Tooling support (Previews, etc.)
    implementation "androidx.compose.ui:ui-tooling:$composeVersion"
    // Foundation (Border, Background, Box, Image, Scroll, shapes, animations, etc.)
    implementation "androidx.compose.foundation:foundation:$composeVersion"
    // Material Design
    implementation "androidx.compose.material:material:$composeVersion"
    implementation "androidx.activity:activity-compose:1.3.0-beta02"
    implementation "androidx.compose.runtime:runtime-livedata:$composeVersion"

当我尝试构建我的项目时出现错误：

Execution failed for task ':app:prepareAcceptanceDebugKotlinCompileTask'.
> Could not resolve all files for configuration ':app:kotlin-extension'.
   > Could not resolve androidx.compose:compose-compiler:1.0.0-beta09.
     Required by:
         project :app
      > No cached version of androidx.compose:compose-compiler:1.0.0-beta09 available for offline mode.
      > No cached version of androidx.compose:compose-compiler:1.0.0-beta09 available for offline mode.
      > No cached version of androidx.compose:compose-compiler:1.0.0-beta09 available for offline mode.
      > No cached version of androidx.compose:compose-compiler:1.0.0-beta09 available for offline mode.
      > No cached version of androidx.compose:compose-compiler:1.0.0-beta09 available for offline mode.
      > No cached version of androidx.compose:compose-compiler:1.0.0-beta09 available for offline mode.
      > No cached version of androidx.compose:compose-compiler:1.0.0-beta09 available for offline mode.
      > No cached version of androidx.compose:compose-compiler:1.0.0-beta09 available for offline mode.
      > No cached version of androidx.compose:compose-compiler:1.0.0-beta09 available for offline mode.
      > No cached version of androidx.compose:compose-compiler:1.0.0-beta09 available for offline mode.
      > No cached version of androidx.compose:compose-compiler:1.0.0-beta09 available for offline mode.
      > No cached version of androidx.compose:compose-compiler:1.0.0-beta09 available for offline mode.

Possible solution:
 - Disable offline mode and rerun the build

我查了一下，没有androidx.compose:compose-compiler:1.0.0-beta09 这样的东西，只有1.0.0-alpha03 版本的可用here。

打印 gradle 依赖项我得到了这个：

kotlin-extension - Configuration for Compose related kotlin compiler extension
\--- androidx.compose:compose-compiler:1.0.0-beta09 FAILED

我可以做些什么来解决这个问题，它来自哪里？

【问题讨论】：

标签： android kotlin gradle android-jetpack-compose

【解决方案1】：

在您的主要 build.gradle 集中

dependencies {
        classpath 'com.android.tools.build:gradle:7.0.0-beta04'
        ...
}

并将您的 gradle-wrapper.properties 设置为：

distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-bin.zip

【讨论】：

【解决方案2】：

第一步，禁用离线模式。那么你应该删除文件夹 .gradle

例如 C:\Users\youruser(.gradle)

【讨论】：