尝试向 React Native 添加 openFile 方法,无法调用 getCurrentActivity

Attempting to add an openFile method to React Native, can't call getCurrentActivity

在 react-native-fs ( https://github.com/johanneslumpe/react-native-fs ) 的分支中,我尝试添加以下代码:

public class RNFSManager extends ReactContextBaseJavaModule {

    public RNFSManager(ReactApplicationContext reactContext) {
      super(reactContext);
    }
    @ReactMethod
    public void openFile(String filepath, Callback callback) {
        try {
          File file = new File(filepath);
          MimeTypeMap myMime = MimeTypeMap.getSingleton();
          Intent newIntent = new Intent(Intent.ACTION_VIEW);
          String mimeType = myMime.getMimeTypeFromExtension(fileExt(filepath).substring(1));
          newIntent.setDataAndType(Uri.fromFile(file), mimeType);
          newIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
          Activity currentActivity = getCurrentActivity();
          if (currentActivity != null) {
            currentActivity.startActivity(newIntent);
          } else {
            this.getReactApplicationContext().startActivity(newIntent);
          }
        } catch (Exception ex) {
          ex.printStackTrace();
          callback.invoke(makeErrorPayload(ex));
        }
      }

但是当我构建它时,我得到这个错误:

.../android/src/main/java/com/rnfs/RNFSManager.java:138: error: cannot find symbol
      Activity currentActivity = getCurrentActivity();
                                     ^
  symbol: method getCurrentActivity()
1 error

我想我在核心 React Native 存储库中以与此完全相同的方式使用 ReactContextBaseJavaModule:

https://github.com/facebook/react-native/blob/235b16d93287061a09c4624e612b5dc4f960ce47/ReactAndroid/src/main/java/com/facebook/react/modules/intent/IntentModule.java

事实证明,react-native-fs 在其构建过程中有自己的内部 react-native 依赖项。因此,即使整个应用程序都是基于 react native v0.25 构建的,react-native-fs 是基于 react-native v0.12 构建的,它没有我试图使用的 API。这绝对是疯了。