包 androidx.core.content 不存在

Posted 2023-03-16

【中文标题】包 androidx.core.content 不存在

【英文标题】：package androidx.core.content does not exist

【发布时间】：2022-01-16 16:22:06

【问题描述】：

我正在尝试使用以下命令在 android 上运行 Ionic 5 应用程序

ionic cap run android -l --external --verbose

但出现这些错误

> Task :capacitor-cordova-android-plugins:compileDebugJavaWithJavac FAILED
[capacitor]         C:\xxx\android\capacitor-cordova-android-plugins\src\main\java\de\appplant\cordova\emailcomposer\Provider.java:22: error: package androidx.core.content does not exist
[capacitor]         import androidx.core.content.FileProvider;
[capacitor]         ^
[capacitor]         C:\xxx\android\capacitor-cordova-android-plugins\src\main\java\de\appplant\cordova\emailcomposer\Provider.java:24: error: cannot find symbol
[capacitor]         public class Provider extends FileProvider 
[capacitor]         ^
[capacitor]         symbol: class FileProvider
[capacitor]         C:\xxx\android\capacitor-cordova-android-plugins\src\main\java\com\pdf\generator\PDFGenerator.java:68: error: cannot access androidx.appcompat.app.AppCompatActivity
[capacitor]         final Context ctx = this.cordova.getActivity().getApplicationContext();
[capacitor]         ^
[capacitor]         class file for androidx.appcompat.app.AppCompatActivity not found
[capacitor]         C:\xxx\android\capacitor-cordova-android-plugins\src\main\java\de\appplant\cordova\emailcomposer\EmailComposer.java:109: error: incompatible types: androidx.appcompat.app.AppCompatActivity cannot be converted 
to android.content.Context
[capacitor]         return cordova.getActivity();
[capacitor]         ^
[capacitor]         C:\xxx\android\capacitor-cordova-android-plugins\src\main\java\de\appplant\cordova\emailcomposer\AssetUtil.java:276: error: cannot find symbol
[capacitor]         return Provider.getUriForFile(ctx, authority, file);
[capacitor]         ^
[capacitor]         symbol:   method getUriForFile(android.content.Context,java.lang.String,java.io.File)
[capacitor]         location: class de.appplant.cordova.emailcomposer.Provider
[capacitor]         Note: Some input files use or override a deprecated API.
[capacitor]         Note: Recompile with -Xlint:deprecation for details.
[capacitor]         5 errors
[capacitor]
[capacitor]         > Task :app:mergeDebugJavaResource
[capacitor]         > Task :app:processDebugResources
[capacitor]
[capacitor]         FAILURE: Build failed with an exception.
[capacitor]
[capacitor]         * What went wrong:
[capacitor]         Execution failed for task ':capacitor-cordova-android-plugins:compileDebugJavaWithJavac'.
[capacitor]         > Compilation failed; see the compiler error output for details.
[capacitor]
[capacitor]         * Try:
[capacitor]
[capacitor]         Deprecated Gradle features were used in this build, making it incompatible with Gradle 8.0.
[capacitor]         Use '--warning-mode all' to show the individual deprecation warnings.
[capacitor]         See https://docs.gradle.org/7.0/userguide/command_line_interface.html#sec:command_line_warnings
[capacitor]         152 actionable tasks: 42 executed, 110 up-to-date
[capacitor]         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.
[capacitor]
[capacitor]         * Get more help at https://help.gradle.org
[capacitor]
[capacitor]         BUILD FAILED in 45s
[capacitor]
[capacitor]         C:\xxx\android>if "1" == "0" goto mainEnd
[capacitor]
[capacitor]         C:\xxx\android>rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
[capacitor]
[capacitor]         C:\xxx\android>rem the _cmd.exe /c_ return code!
[capacitor]
[capacitor]         C:\xxx\android>if not "" == "" exit 1
[capacitor]
[capacitor]         C:\xxx\android>exit /b 1
[capacitor]
[ERROR] An error occurred while running subprocess capacitor.

        capacitor.cmd run android --no-sync --target ce01182192619a1301 exited with exit code 1.

        Re-running this command with the --verbose flag may provide more information.
  ionic:utils-process onBeforeExit handler: 'process.exit' received +0ms
  ionic:utils-process onBeforeExit handler: running 6 functions +0ms
  ionic:lib:hooks Looking for ionic:serve:after npm script. +54s
  ionic:utils-process error while killing process tree for 5752: Error: Command failed: taskkill /pid 5752 /T /F
  ionic:utils-process ERROR: The process "5752" not found.
  ionic:utils-process 
  ionic:utils-process     at ChildProcess.exithandler (child_process.js:308:12)
  ionic:utils-process     at ChildProcess.emit (events.js:315:20)
  ionic:utils-process     at maybeClose (internal/child_process.js:1048:16)
  ionic:utils-process     at Process.ChildProcess._handle.onexit (internal/child_process.js:288:5) 
  ionic:utils-process   killed: false,
  ionic:utils-process   code: 128,
  ionic:utils-process   signal: null,
  ionic:utils-process   cmd: 'taskkill /pid 5752 /T /F'

过去三天我一直在努力寻找解决方案，但没有成功。我已经做了以下修复它，但它仍然显示同样的错误

在 gradle.properties 中

android.useAndroidX=true
android.enableJetifier=true

在 variables.gradle 中

 minSdkVersion = 23
    compileSdkVersion = 30
    targetSdkVersion = 26
    androidxActivityVersion = '1.2.0'
    androidxAppCompatVersion = '1.2.0'
    androidxCoordinatorLayoutVersion = '1.1.0'
    androidxCoreVersion = '1.3.2'
    androidxFragmentVersion = '1.3.0'
    junitVersion = '4.13.1'
    androidxJunitVersion = '1.1.2'
    androidxEspressoCoreVersion = '3.3.0'
    cordovaAndroidVersion = '10.1.1'

在 build.gradle 中

repositories 
        google()
        mavenCentral()
    
... 
... 
allprojects 
    repositories 
        google()
        mavenCentral()
    

这些更改都不能解决问题。但是，如果我在 Android Studio 中打开 android build

ionic cap open android

并将库“Gradle:androidx.core:core:1.3.0@aar”作为智能感知建议添加到类路径中，然后它可以工作，我可以从 Android Studio 在设备上运行该项目。 但是，如果我进行更改并重建，那么它会再次显示相同的错误。

环境细节

Ionic:

   Ionic CLI                     : 6.16.3 (C:\Users\xxx\AppData\Roaming\npm\node_modules\@ionic\cli)
   Ionic Framework               : @ionic/angular 5.6.11
   @angular-devkit/build-angular : 12.0.5
   @angular-devkit/schematics    : 12.0.5
   @angular/cli                  : 12.0.5
   @ionic/angular-toolkit        : 4.0.0

Capacitor:

   Capacitor CLI      : 3.1.1
   @capacitor/android : 3.3.2
   @capacitor/core    : 3.3.2
   @capacitor/ios     : not installed

Utility:

   cordova-res : 0.15.3
   native-run  : 1.4.0

System:

   NodeJS : v14.16.0 (C:\Program Files\nodejs\node.exe)
   npm    : 6.14.11
   OS     : Windows 10

请为此提出任何解决方案。

非常感谢

【问题讨论】：

您找到解决方案了吗？如果是，请告诉。

不，还没有找到解决办法。目前已删除导致此问题的电子邮件撰写器模块

【参考方案1】：

尝试以下步骤：

ionic cordova plugin add cordova-plugin-androidx ionic cordova plugin add cordova-plugin-androidx-adapter

如果仍然无法正常工作，请尝试步骤：

npm install jetifier    
npx jetifier    
npx cap sync android

【讨论】：

已经做了这些

@Bhavesh 您使用的是什么版本的 JAVA？尝试将 java 更新到最新版本

添加了有问题的环境细节

【参考方案2】：

如果您使用的是 Capacitor，则不能像在 Cordova 中那样“添加插件”...

你必须从 npm 或 yarn 安装它。

npm i cordova-plugin-androidx
npm i cordova-plugin-androidx-adapter....

或者尝试更新到最新的 Capacitor、Ionic 和 Android Studio。

【讨论】：

已尝试从 npm 安装插件并更新 ionic 但仍然出现同样的错误。这就是我所拥有的 Ionic CLI 6.16.2 Ionic Framework: 5.6.11 Angular: 12.0.5 Capacitor CLI: 3.1.1 Capacitor Core: 3.3.1 已添加有关问题的全部细节