迁移到 Android Api 级别 29 时，出现此错误，找不到 requestLegacyExternalStorage，处理清单失败

Question

我必须使用 requestLegacyExternalStorage="true" 来访问我的本机应用程序中的外部存储，

build.gradle:
   buildToolsVersion = "29.0.0"
        minSdkVersion = 23
        compileSdkVersion = 29
        targetSdkVersion = 29
        supportLibVersion = "29.0.0"````
Manifest:
  <application
        tools:targetApi="29"
        tools:ignore="GoogleAppIndexingWarning"
        android:name=".MainApplication"
        android:allowBackup="false"
        android:theme="@style/AppTheme"
        android:requestLegacyExternalStorage="true"
        android:largeHeap="true">````
    
Error:
error: attribute android:requestLegacyExternalStorage not found.
error: failed processing manifest

Answer 1

我通过将子项目 compilesdkversion 更改为 29 解决了这个错误