所以，我正在使用命令列和 VScode。我只是想讓 Flutter 運行，這樣我就可以再試一次，但我一直遇到這個錯誤。幾個月前我使用過它，現在我正在嘗試啟動一個新應用程式。有任何想法嗎？
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:checkDebugAarMetadata'.
> Multiple task action failures occurred:
> A failure occurred while executing com.android.build.gradle.internal.tasks.CheckAarMetadataWorkAction
> The minCompileSdk (31) specified in a
dependency's AAR metadata (META-INF/com/android/build/gradle/aar-metadata.properties)
is greater than this module's compileSdkVersion (android-30).
Dependency: androidx.window:window-java:1.0.0-beta04.
AAR metadata file: C:\Users\Iverson\.gradle\caches\transforms-2\files-2.1\625039eaad011f884ddd84f857a44b7f\jetified-window-java-1.0.0-beta04\META-INF\com\android\build\gradle\aar-metadata.properties.
> A failure occurred while executing com.android.build.gradle.internal.tasks.CheckAarMetadataWorkAction
> The minCompileSdk (31) specified in a
dependency's AAR metadata (META-INF/com/android/build/gradle/aar-metadata.properties)
is greater than this module's compileSdkVersion (android-30).
Dependency: androidx.window:window:1.0.0-beta04.
AAR metadata file: C:\Users\Iverson\.gradle\caches\transforms-2\files-2.1\a78fdf90e4c1f8464b19895cfb365f3f\jetified-window-1.0.0-beta04\META-INF\com\android\build\gradle\aar-metadata.properties.
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 4s
Running Gradle task 'assembleDebug'... 5.2s
Exception: Gradle task assembleDebug failed with exit code 1
uj5u.com熱心網友回復：
嗯，我剛剛重新安裝了 Java，它開始作業了。具體來說，我確保 Java 8 可以正常作業。
uj5u.com熱心網友回復：
您應該在 build.grade 上設定 minSdkVersion 較低的數字，像這樣
minSdkVersion 21
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