安卓谷歌changeListener

Question

我正在尝试运行Android Google Drive。我使用的是github示例代码Android Demos。

我已经将google play服务添加到我的项目中。这是我得到的错误：

The import com.google.android.gms.drive.events.DriveEvent.ChangeListener cannot be resolved

阅读此页面后(Error com.google.android.gms.drive.DriveApi.DriveContentsResult cannot be resolved)

我把它改成

The import com.google.android.gms.drive.events.ChangeListener

但是，错误仍然存在于这两种方法中：

Listener cannot be resolved to a type

-

private void toggle() {
        if (mSelectedFileId == null) {
            return;
        }
        synchronized (mSubscriptionStatusLock) {
            DriveFile file = Drive.DriveApi.getFile(getGoogleApiClient(),
                    mSelectedFileId);
            if (!isSubscribed) {
                Log.d(TAG, "Starting to listen to the file changes.");
                file.addChangeListener(getGoogleApiClient(), changeListener);//error
                isSubscribed = true;
            } else {
                Log.d(TAG, "Stopping to listen to the file changes.");
                file.removeChangeListener(getGoogleApiClient(), changeListener);//error
                isSubscribed = false;
            }
        }
        refresh();
    }

-

final private Listener<ChangeEvent> changeListener = new Listener<ChangeEvent>() {//error
    @Override
    public void onEvent(ChangeEvent event) {
        mLogTextView.setText(String.format("File change event: %s", event));
    }
};

在这个问题上，有人能给我一些启发吗？

Github代码https://github.com/googledrive/android-demos

Answer 1

我使用的是以下代码：

import com.google.android.gms.common.api.PendingResult;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.common.api.Status;
import com.google.android.gms.drive.Drive;
import com.google.android.gms.drive.DriveApi;
import com.google.android.gms.drive.DriveResource;
import com.google.android.gms.drive.events.ChangeEvent;
import com.google.android.gms.drive.events.ChangeListener;

PendingResult<DriveApi.DriveIdResult> pendingResult = Drive.DriveApi.fetchDriveId(mGoogleApiClient, id);
    pendingResult.setResultCallback(new ResultCallback<DriveApi.DriveIdResult>() {
        @Override
        public void onResult(@NonNull DriveApi.DriveIdResult driveIdResult) {
            if (!driveIdResult.getStatus().isSuccess()) {
                Log.d(TAG, String.format("fetch drive id error: %s", driveIdResult.getStatus().getStatusMessage()));
                return;
            }
            mCurrentDriveId = driveIdResult.getDriveId();
            DriveResource resource = mCurrentDriveId.asDriveResource();
            Log.d(TAG, "received driveid from id");

            PendingResult<Status> pendingChange = resource.addChangeListener(mGoogleApiClient, new ChangeListener() {
                @Override
                public void onChange(ChangeEvent changeEvent) {
                    onResourceChange(changeEvent);
                }
            });
            pendingChange.setResultCallback(new ResultCallback<Status>() {
                @Override
                public void onResult(@NonNull Status status) {
                    if (status.isSuccess()) {
                        Log.d(TAG, "change listener success");
                    } else {
                        Log.d(TAG, String.format("change listener error: %s", status.getStatusMessage()));
                    }
                }
            });
        }
    });

但看起来这些变化并不是很实时。无论如何，getFile()已经过时了。