我已经浏览了Demo，但我尝试使用QuickStart示例上传图像。但我没有得到如何上传音频文件，我将在其中提供我的文件路径或Intent Picker来选择文件。我正在使用 createFile（）方法
如何将音频文件上传到我的驱动器？
如何同步云端硬盘文件？
如何播放（播放音频文件）？
以下代码只上传包含任何内容的文件。
public class MainActivity extends Activity implements ConnectionCallbacks,
OnConnectionFailedListener {
private static final String TAG = "android-drive-quickstart";
//private static final int REQUEST_CODE_CAPTURE_IMAGE = 1;
private static final int REQUEST_CODE_CREATOR = 2;
private static final int REQUEST_CODE_RESOLUTION = 3;
private static final int PICKFILE_RESULT_CODE = 1;
private static Uri fileUri;
private ContentsResult result;
private GoogleApiClient mGoogleApiClient;
private Bitmap mBitmapToSave;
@Override
protected void onResume() {
super.onResume();
if (mGoogleApiClient == null) {
// Create the API client and bind it to an instance variable.
// We use this instance as the callback for connection and connection
// failures.
// Since no account name is passed, the user is prompted to choose.
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(Drive.API)
.addScope(Drive.SCOPE_FILE)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
}
// Connect the client. Once connected, the camera is launched.
mGoogleApiClient.connect();
}
@Override
public void onConnectionFailed(ConnectionResult result) {
// Called whenever the API client fails to connect.
Log.i(TAG, "GoogleApiClient connection failed: " + result.toString());
if (!result.hasResolution()) {
// show the localized error dialog.
showToast("Error in on connection failed");
GooglePlayServicesUtil.getErrorDialog(result.getErrorCode(), this, 0).show();
return;
}
// The failure has a resolution. Resolve it.
// Called typically when the app is not yet authorized, and an
// authorization
// dialog is displayed to the user.
try {
result.startResolutionForResult(this, REQUEST_CODE_RESOLUTION);
} catch (SendIntentException e) {
showToast("error"+e.toString());
Log.e(TAG, "Exception while starting resolution activity", e);
}
}
@Override
public void onConnected(Bundle connectionHint) {
Log.i(TAG, "API client connected.");
showToast("Inside Connected");
result = Drive.DriveApi.newContents(mGoogleApiClient).await();
showToast(""+result.getContents().toString());
OutputStream outputStream = result.getContents().getOutputStream();
ByteArrayOutputStream bitmapStream = new ByteArrayOutputStream();
//java.io.File fileContent = new java.io.File(fileUri.getPath());
MetadataChangeSet changeSet = new MetadataChangeSet.Builder()
.setTitle("New file")
.setMimeType("audio/MP3")
.setStarred(true).build();
showToast("meta data created");
DriveFileResult dfres= Drive.DriveApi.getRootFolder(getGoogleApiClient())
.createFile(getGoogleApiClient(), changeSet, result.getContents())
.await();
showToast("await() complete");
if (!result.getStatus().isSuccess()) {
showToast("Error while trying to create the file");
return;
}
showToast("Created a file: " + dfres.getDriveFile().getDriveId());
}
private void saveFileToDrive()
{
}
@Override
protected void onActivityResult(final int requestCode, final int resultCode, final Intent data) {
if (requestCode == REQUEST_CODE_RESOLUTION && resultCode == RESULT_OK) {
mGoogleApiClient.connect();
showToast("Connected");
}
}
@Override
protected void onPause() {
if (mGoogleApiClient != null) {
mGoogleApiClient.disconnect();
}
super.onPause();
}
public void showToast(final String toast) {
runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(), toast, Toast.LENGTH_SHORT).show();
}
});
}
public GoogleApiClient getGoogleApiClient() {
return mGoogleApiClient;
}
@Override
public void onConnectionSuspended(int cause) {
Log.i(TAG, "GoogleApiClient connection suspended");
}
}
答案 0 :(得分：3)
试试这个：
**
* An AsyncTask that maintains a connected client.
*/
public abstract class ApiClientAsyncTask<Params, Progress, Result>
extends AsyncTask<Params, Progress, Result> {
private GoogleApiClient mClient;
public ApiClientAsyncTask(Context context) {
GoogleApiClient.Builder builder = new GoogleApiClient.Builder(context)
.addApi(Drive.API)
.addScope(Drive.SCOPE_FILE);
mClient = builder.build();
}
@Override
protected final Result doInBackground(Params... params) {
Log.d("TAG", "in background");
final CountDownLatch latch = new CountDownLatch(1);
mClient.registerConnectionCallbacks(new ConnectionCallbacks() {
@Override
public void onConnectionSuspended(int cause) {
}
@Override
public void onConnected(Bundle arg0) {
latch.countDown();
}
});
mClient.registerConnectionFailedListener(new OnConnectionFailedListener() {
@Override
public void onConnectionFailed(ConnectionResult arg0) {
latch.countDown();
}
});
mClient.connect();
try {
latch.await();
} catch (InterruptedException e) {
return null;
}
if (!mClient.isConnected()) {
return null;
}
try {
return doInBackgroundConnected(params);
} finally {
mClient.disconnect();
}
}
/**
* Override this method to perform a computation on a background thread, while the client is
* connected.
*/
protected abstract Result doInBackgroundConnected(Params... params);
/**
* Gets the GoogleApliClient owned by this async task.
*/
protected GoogleApiClient getGoogleApiClient() {
return mClient;
}
}
要保存文件的类：
/**
* An async task that creates a new text file by creating new contents and
* metadata entities on user's root folder. A number of blocking tasks are
* performed serially in a thread. Each time, await() is called on the
* result which blocks until the request has been completed.
*/
public class CreateFileAsyncTask extends ApiClientAsyncTask<String, Void, Metadata>
{
public CreateFileAsyncTask(Context context)
{
super(context);
}
@Override
protected Metadata doInBackgroundConnected(String... arg0)
{
// First we start by creating a new contents, and blocking on the
// result by calling await().
DriveApi.ContentsResult contentsResult = Drive.DriveApi.newContents(getGoogleApiClient()).await();
if (!contentsResult.getStatus().isSuccess()) {
// We failed, stop the task and return.
return null;
}
//file to save in drive
String pathFile = arg0[0];
File file = new File(pathFile);
// Read the contents and open its output stream for writing, then
// write a short message.
Contents originalContents = contentsResult.getContents();
OutputStream os = originalContents.getOutputStream();
try
{
InputStream dbInputStream = new FileInputStream(file);
byte[] buffer = new byte[1024];
int length;
int counter = 0;
while((length = dbInputStream.read(buffer)) > 0)
{
++counter;
os.write(buffer, 0, length);
}
dbInputStream.close();
os.flush();
os.close();
} catch (IOException e) {
e.printStackTrace();
return null;
}
// Create the metadata for the new file including title and MIME
// type.
MetadataChangeSet originalMetadata = new MetadataChangeSet.Builder()
.setTitle(file.getName())
.setMimeType("application/x-sqlite3").build();
// Create the file in the root folder, again calling await() to
// block until the request finishes.
DriveFolder rootFolder = Drive.DriveApi.getRootFolder(getGoogleApiClient());
DriveFolder.DriveFileResult fileResult = rootFolder.createFile(
getGoogleApiClient(), originalMetadata, originalContents).await();
if (!fileResult.getStatus().isSuccess()) {
// We failed, stop the task and return.
return null;
}
// Finally, fetch the metadata for the newly created file, again
// calling await to block until the request finishes.
DriveResource.MetadataResult metadataResult = fileResult.getDriveFile()
.getMetadata(getGoogleApiClient())
.await();
if (!metadataResult.getStatus().isSuccess()) {
// We failed, stop the task and return.
return null;
}
// We succeeded, return the newly created metadata.
return metadataResult.getMetadata();
}
@Override
protected void onPostExecute(Metadata result)
{
super.onPostExecute(result);
if (result == null)
{
// The creation failed somehow, so show a message.
App.showAppMsg(getActivity(),"Error while creating the file.",Style.ALERT);
return;
}
// The creation succeeded, show a message.
App.showAppMsg(getActivity(),"File created: " + result.getDriveId(),Style.CONFIRM);
}
}
答案 1 :(得分：1)
我没有玩过音频文件，但一般情况下，Google Drive Android API（GDAA）并不处理音频文件。您只需创建一个文件，设置元数据并填充二进制内容。查看code here（加上一些readme blah blah here）。你会找到一个代码行
byte[] buff = ("written on: " + _dfn.getName()).getBytes();
if (null == _gc.creatFile(fldr, name, MIMETEXT, buff)) return;
那里产生 byte [] 缓冲区并创建一个文本MIME类型的文件。因此，尝试使用它，只需替换MIME类型并将“buff”填充到音频流中。我用JPEG二进制文件成功完成了。
还有 GooApiClnt 包装类可以处理大多数基本的GDAA功能。 不要尝试以这种方式在工作中编码，但是，它可能会让你解雇： - ）。
祝你好运。答案 2 :(得分：1)
在onConnected方法中，您可以创建新文件，但不会在其中添加任何新内容。您可以在此行中创建新内容：
result = Drive.DriveApi.newContents(mGoogleApiClient).await();
比你在这一行中掌握它的输出流：
OutputStream outputStream = result.getContents().getOutputStream();
并且在此行中创建一个空字节数组输出流：
ByteArrayOutputStream bitmapStream = new ByteArrayOutputStream();
但你永远不会填补这个位图流＃39;任何内容，最糟糕的是：你永远不会把它写到你的内容＆＃39; outputStream＆＃39;。
接下来应该做的是将音频文件的内容写入＆＃39; bitmapStream＆＃39;像这样的东西：
InputStream in = file.getInputStream(/*you need to get the file's path and put it here*/ "some_audio_file.mp3");
int singleByte;
while((singleByte = in.read()) != -1){
bitmapStream.write(b);
}
现在，您已将文件的内容置于＆bitfaStrea＆＃39;你可以把它写到新内容的输出流＃39;像这样：
outputStream.write(bitmapStream.toByteArray());
比你做的MetadataChangeSet＆＃39;什么东西，你应该没事。
一些建议： 1.在主线程上执行文件或网络活动（或您的案例中的文件和网络活动）等I / O操作不是一个好习惯。最好使用AsyncTask在后台线程中执行它。
这是一个使用AsyncTask上传图像的类的示例（并猜测我称之为ByteArrayOutputStream ...右 - ＆＃39; bitmapStream＆＃39;）：
public class TakePhotoActivity extends Activity implements
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener {
/**
* Request code for auto Google Play Services error resolution.
*/
protected static final int REQUEST_CODE_RESOLUTION = 1;
private static final String TAG = "TakePhotoActivity";
private static final String KEY_IN_RESOLUTION = "is_in_resolution";
private static final int REQUEST_CODE_CREATOR = 2;
/**
* Google API client.
*/
private GoogleApiClient mGoogleApiClient;
/**
* Receives the new file's contents and executes the editor AsyncTask
*/
private ResultCallback<DriveApi.ContentsResult> mSaveFileCallback = new ResultCallback<DriveApi.ContentsResult>() {
@Override
public void onResult(DriveApi.ContentsResult contentsResult) {
EditFileAsyncTask editFileAsyncTask = new EditFileAsyncTask();
editFileAsyncTask.execute(contentsResult);
}
};
/**
* Determines if the client is in a resolution state, and
* waiting for resolution intent to return.
*/
private boolean mIsInResolution;
private Bitmap mBitmapToSave;
/**
* Called when the activity is starting. Restores the activity state.
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_take_menu_photo);
if (savedInstanceState != null) {
mIsInResolution = savedInstanceState.getBoolean(KEY_IN_RESOLUTION, false);
}
try {
InputStream inputStream = getAssets().open("some_image.jpg");
mBitmapToSave = BitmapFactory.decodeStream(inputStream);
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* Called when the Activity is made visible.
* A connection to Play Services need to be initiated as
* soon as the activity is visible. Registers {@code ConnectionCallbacks}
* and {@code OnConnectionFailedListener} on the
* activities itself.
*/
@Override
protected void onStart() {
super.onStart();
if (mGoogleApiClient == null) {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(Drive.API)
.addScope(Drive.SCOPE_FILE)
// Optionally, add additional APIs and scopes if required.
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
}
Log.d("test", "connect()");
mGoogleApiClient.connect();
}
/**
* Called when activity gets invisible. Connection to Play Services needs to
* be disconnected as soon as an activity is invisible.
*/
@Override
protected void onStop() {
if (mGoogleApiClient != null) {
mGoogleApiClient.disconnect();
}
super.onStop();
}
/**
* Saves the resolution state.
*/
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putBoolean(KEY_IN_RESOLUTION, mIsInResolution);
}
/**
* Handles Google Play Services resolution callbacks.
*/
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case REQUEST_CODE_RESOLUTION:
retryConnecting();
break;
}
}
private void retryConnecting() {
mIsInResolution = false;
if (!mGoogleApiClient.isConnecting()) {
Log.d("test", "connect()");
mGoogleApiClient.connect();
}
}
/**
* Called when {@code mGoogleApiClient} is connected.
*/
@Override
public void onConnected(Bundle connectionHint) {
Log.i(TAG, "GoogleApiClient connected");
// TODO: Start making API requests.
if (mBitmapToSave != null) {
saveFileToDrive();
}
}
/**
* Called when {@code mGoogleApiClient} connection is suspended.
*/
@Override
public void onConnectionSuspended(int cause) {
Log.i(TAG, "GoogleApiClient connection suspended");
retryConnecting();
}
/**
* Called when {@code mGoogleApiClient} is trying to connect but failed.
* Handle {@code result.getResolution()} if there is a resolution
* available.
*/
@Override
public void onConnectionFailed(ConnectionResult result) {
Log.i(TAG, "GoogleApiClient connection failed: " + result.toString());
if (!result.hasResolution()) {
// Show a localized error dialog.
GooglePlayServicesUtil.getErrorDialog(
result.getErrorCode(), this, 0, new OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
retryConnecting();
}
}
).show();
return;
}
// If there is an existing resolution error being displayed or a resolution
// activity has started before, do nothing and wait for resolution
// progress to be completed.
if (mIsInResolution) {
return;
}
mIsInResolution = true;
try {
result.startResolutionForResult(this, REQUEST_CODE_RESOLUTION);
} catch (SendIntentException e) {
Log.e(TAG, "Exception while starting resolution activity", e);
retryConnecting();
}
}
private void saveFileToDrive() {
Log.i(TAG, "Creating new contents.");
Drive.DriveApi.newContents(mGoogleApiClient).setResultCallback(mSaveFileCallback);
}
private void showMessage(String message) {
Log.i(TAG, message);
// Toast.makeText(this, message, Toast.LENGTH_LONG).show();
}
private class EditFileAsyncTask extends AsyncTask<DriveApi.ContentsResult, Void, Boolean> {
@Override
protected Boolean doInBackground(DriveApi.ContentsResult... params) {
DriveApi.ContentsResult contentsResult = params[0];
if (!contentsResult.getStatus().isSuccess()) {
showMessage("Failed to create new contents.");
return false;
}
showMessage("New contents created.");
OutputStream outputStream = contentsResult.getContents().getOutputStream();
ByteArrayOutputStream bitmapStream = new ByteArrayOutputStream();
mBitmapToSave.compress(Bitmap.CompressFormat.PNG, 100, bitmapStream);
try {
outputStream.write(bitmapStream.toByteArray());
} catch (IOException e) {
showMessage("Unable to write file contents.");
e.printStackTrace();
}
MetadataChangeSet metadataChangeSet = new MetadataChangeSet.Builder()
.setMimeType("image/jpeg")
.setTitle("some_image.jpg")
.build();
IntentSender intentSender = Drive.DriveApi
.newCreateFileActivityBuilder()
.setInitialMetadata(metadataChangeSet)
.setInitialContents(contentsResult.getContents())
.build(mGoogleApiClient);
try {
startIntentSenderForResult(intentSender, REQUEST_CODE_CREATOR, null, 0, 0, 0);
} catch (SendIntentException e) {
showMessage("Failed to launch file chooser.");
e.printStackTrace();
}
return true;
}
@Override
protected void onPostExecute(Boolean result) {
if (!result) {
showMessage("Error while editing contents");
return;
}
showMessage("Successfully edited contents");
}
}
}
答案 3 :(得分：1)
很简单。在我努力之后，我找到了解决方案。
private String mFileName = null;
File folder = new File(Environment.getExternalStorageDirectory() +
"/FolderFile");
if (!folder.exists()) {
folder.mkdir();
}
mFileName = Environment.getExternalStorageDirectory().getAbsolutePath();
mFileName += "/FolderFile/a.mp3";
录制音频后。你必须 buildGoogleSignInClient()
createFileWithIntent(mFileName);
private void createFileWithIntent(String I) {
final String audio = I;
final Task<DriveFolder> rootFolderTask = getDriveResourceClient().getRootFolder();
final Task<DriveContents> createContentsTask = getDriveResourceClient().createContents();
Tasks.whenAll(rootFolderTask, createContentsTask)
.continueWithTask(new Continuation<Void, Task<DriveFile>>() {
@RequiresApi(api = Build.VERSION_CODES.KITKAT)
public Task<DriveFile> then(@NonNull Task<Void> task) throws Exception {
DriveFolder PASTA = rootFolderTask.getResult();
DriveContents DADOS = createContentsTask.getResult();
File file = new File(audio);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buf = new byte[1024];
FileInputStream fis = new FileInputStream(file);
for (int readNum; (readNum = fis.read(buf)) != -1;) {
baos.write(buf, 0, readNum);
}
OutputStream outputStream = DADOS.getOutputStream();
outputStream.write(baos.toByteArray());
MetadataChangeSet TIPO = new MetadataChangeSet.Builder()
.setMimeType("audio/mp3")
.setTitle("audio.mp3")
.setStarred(true)
.build();
return getDriveResourceClient().createFile(PASTA, TIPO, DADOS);
}
});
}