无法解析Jetpack compose编译器

Question

我尝试将jetpack compose添加到现有项目中。我将jetpack compose添加到我的gradle文件中：

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，我得到一个错误：

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

我检查了一下，没有androidx.compose:compose-compiler:1.0.0-beta09这样的东西，只有这个可用的here的1.0.0-alpha03版本。

打印gradle依赖项时，我会得到以下结果：

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

我能做些什么来解决这个问题?它来自哪里？

Answer 1

在你的主build.gradle集合中

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

并将gradle-wrapper.properties设置为：

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

Answer 2

第一步，禁用离线模式。然后，您应该删除文件夹.gradle

例如C:\Users\youruser(.gradle)