Android upload to GoogleDrive:类型视图的方法header2（字符串）未定义

我正在尝试使用可恢复的媒体上传将可恢复的媒体上传活动实施到GoogleDrive。。到目前为止，我在编译之前遇到的唯一错误是：

类型视图的方法header2（字符串）未定义

在我的FileUploadProgressListener类中。。我应该实现特定的布局还是使用当前的活动布局来添加此视图？无法获取有关它的任何信息

import android.view.View;
import com.google.api.client.googleapis.media.MediaHttpUploader;
import com.google.api.client.googleapis.media.MediaHttpUploaderProgressListener;
 import java.io.IOException;

 public class FileUploadProgressListener implements MediaHttpUploaderProgressListener {

  @Override
  public void progressChanged(MediaHttpUploader uploader) throws IOException {
    switch (uploader.getUploadState()) {
      case INITIATION_STARTED:
        View.header2("Upload Initiation has started.");
        break;
      case INITIATION_COMPLETE:
        View.header2("Upload Initiation is Complete.");
        break;
      case MEDIA_IN_PROGRESS:
        View.header2("Upload is In Progress: " + uploader.getProgress());
        break;
      case MEDIA_COMPLETE:
        View.header2("Upload is Complete!");
        break;
    }
  }
}

到目前为止，我的上传方法如下，希望我尊重谷歌api java客户端示例标准

   .... static variables previously defined 
   mDirectoryPath = Environment.getExternalStorageDirectory() + "/swimmer/swimlogs/";
   java.io.File file = new java.io.File(mDirectoryPath + java.io.File.separator + mFileName);
   mFileUri = Uri.fromFile(file);
  .....


      private static File uploadFile(boolean useDirectUpload) throws IOException {
        java.io.File fileContent = new java.io.File(mFileUri.getPath());

        Model.File fileMetadata = new File();
        fileMetadata.setParents(Arrays.asList(new ParentReference().setId(mFolderId)));
        fileMetadata.setTitle(fileContent.getName());
        InputStreamContent mediaContent = new InputStreamContent("text/csv", new BufferedInputStream(new FileInputStream(fileContent)));
        mediaContent.setLength(fileContent.length());

        Drive.Files.Insert insert = mService.files().insert(fileMetadata, mediaContent);
        MediaHttpUploader uploader = insert.getMediaHttpUploader();
        uploader.setDirectUploadEnabled(useDirectUpload);  // set to false
        uploader.setChunkSize(MediaHttpUploader.MINIMUM_CHUNK_SIZE);
        uploader.setProgressListener(new FileUploadProgressListener());
        return insert.execute();
  }

---

我将View.header2（字符串）更改为简单日志。。但我有个例外。。。。显示“Initiation has started！”后，似乎“Initiation is complete！don't pass…”如果我错过了任何重要参数，请不要通过？我输入了一个e.printStackTrace（）；语句，但我看不到跟踪和发生了什么…我最终使用处理程序转到DialogProgress模式…初始化MSService的方式很好