Question

反应本机和fbsdk版本：

"react": "16.6.3",
"react-native": "0.58.5",
"react-native-fbsdk": "^0.8.0"

我遇到以下错误：

> Task :app:compileDebugJavaWithJavac FAILED
C:\Users\xxxx\Desktop\project\android\app\src\main\java\com\project\MainApplication.java:22: error: cannot find symbol
  private static CallBackManager mCallbackManager = CallbackManager.Factory.create();
                 ^
  symbol:   class CallBackManager
  location: class MainApplication
C:\Users\xxxx\Desktop\project\android\app\src\main\java\com\project\MainApplication.java:24: error: cannot find symbol
  protected static CallBackManager getCallbackManager() {
                   ^
  symbol:   class CallBackManager
  location: class MainApplication
2 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

该问题似乎与代码的这一部分有关，但我不太清楚出什么问题。我完全按照他们的official repository中提供的说明进行操作。

public class MainApplication extends Application implements ReactApplication {

  private static CallBackManager mCallbackManager = CallbackManager.Factory.create();

  protected static CallBackManager getCallbackManager() {
    return mCallbackManager;
  }

  // ...

  @Override
  protected List<ReactPackage> getPackages() {
    return Arrays.<ReactPackage>asList(
      new MainReactPackage(),
      new FBSDKPackage(mCallbackManager)
    );
  }

  // ...

}

我还手动将以下导入添加到MainActivity.java：

import com.facebook.CallbackManager;
import com.facebook.FacebookSdk;
import com.facebook.reactnative.androidsdk.FBSDKPackage;

将这些行添加到app/build.gradle：

implementation project(':react-native-fbsdk')
implementation 'com.facebook.android:facebook-android-sdk:4.34.0'

，然后将其发送到settings.gradle：

include ':react-native-fbsdk'
project(':react-native-fbsdk').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-fbsdk/android')

Answer 1

如果有人偶然发现同一问题，则与npm无法将fb-sdk正确链接到项目有关。我尝试使用npm install和npm link，但是尽管npm没有抛出任何错误，但还是没有成功。但是，使用react-native安装sdk可以解决此问题：

react-native install react-native-fbsdk
react-native link react-native-fbsdk

如果尝试链接时遇到MODULE_NOT_FOUND错误，请打开项目根文件夹上的命令行并运行：

cd android
gradlew clean

另外，尽管他们的官方GitHub repository确实包含有关安装过程的说明，但我建议您遵循facebook developers page，因为这样做在可读性和细节方面要好得多。

React Native fb-sdk找不到符号CallbackManager

1 个答案: