我正在创建一个应用程序，允许我将谷歌驱动器文件添加到我的应用程序。我已设法打开谷歌驱动器并将文件下载到我的手机，但这不是这个应用程序的重点。我正在尝试从应用中打开文件，而不是打开Google云端硬盘。有帮助吗？ 注意：我已经在Google云端控制台上注册了我的应用以及那里的所有内容。
这是代码。但正如我所说，我不需要打开谷歌硬盘，我需要从我的应用程序中获取文件。
@Override
protected void onResume() {
super.onResume();
if (mGoogleApiClient == null) {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(Drive.API)
.addScope(Drive.SCOPE_FILE)
.addConnectionCallbacks((GoogleApiClient.ConnectionCallbacks) this)
.addOnConnectionFailedListener((GoogleApiClient.OnConnectionFailedListener) this)
.build();
}
mGoogleApiClient.connect();
}
@Override
protected void onStop() {
super.onStop();
if (mGoogleApiClient != null) {
// disconnect Google API client connection
mGoogleApiClient.disconnect();
}
super.onPause();
}
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.
GoogleApiAvailability.getInstance().getErrorDialog(this, result.getErrorCode(), 0).show();
return;
}
try {
result.startResolutionForResult(this, REQUEST_CODE_RESOLUTION);
} catch (IntentSender.SendIntentException e) {
Log.e(TAG, "Exception while starting resolution activity", e);
}
}
public void onConnected(Bundle connectionHint) {
Toast.makeText(getApplicationContext(), "Connected", Toast.LENGTH_LONG).show();
}
public void onConnectionSuspended(int cause) {
Log.i(TAG, "GoogleApiClient connection suspended");
}
public void onClickCreateMethod(View view){
fileOperation = true;
// create new contents resource
Drive.DriveApi.newDriveContents(mGoogleApiClient)
.setResultCallback(driveContentsCallback);
}
public void onClickOpenFileMethod(View view){
fileOperation = false;
// create new contents resource
Drive.DriveApi.newDriveContents(mGoogleApiClient)
.setResultCallback(driveContentsCallback);
}
/**
* Open list of folder and file of the Google Drive
*/
public void OpenFileFromGoogleDrive(){
IntentSender intentSender = Drive.DriveApi
.newOpenFileActivityBuilder()
.setMimeType(new String[] { "text/plain", "text/html" })
.build(mGoogleApiClient);
try {
startIntentSenderForResult(
intentSender, REQUEST_CODE_OPENER, null, 0, 0, 0);
} catch (IntentSender.SendIntentException e) {
Log.w(TAG, "Unable to send intent", e);
}
}
final ResultCallback<DriveApi.DriveContentsResult> driveContentsCallback =
new ResultCallback<DriveApi.DriveContentsResult>() {
@Override
public void onResult(DriveApi.DriveContentsResult result) {
if (result.getStatus().isSuccess()) {
if (fileOperation == true) {
CreateFileOnGoogleDrive(result);
} else {
OpenFileFromGoogleDrive();
}
}
}
};
public void CreateFileOnGoogleDrive(DriveApi.DriveContentsResult result){
final DriveContents driveContents = result.getDriveContents();
// Perform I/O off the UI thread.
new Thread() {
@Override
public void run() {
// write content to DriveContents
OutputStream outputStream = driveContents.getOutputStream();
Writer writer = new OutputStreamWriter(outputStream);
try {
writer.write("Hello abhay!");
writer.close();
} catch (IOException e) {
Log.e(TAG, e.getMessage());
}
MetadataChangeSet changeSet = new MetadataChangeSet.Builder()
.setTitle("abhaytest2")
.setMimeType("text/plain")
.setStarred(true).build();
// create a file in root folder
Drive.DriveApi.getRootFolder(mGoogleApiClient)
.createFile(mGoogleApiClient, changeSet, driveContents)
.setResultCallback(fileCallback);
}
}.start();
}
final private ResultCallback<DriveFolder.DriveFileResult> fileCallback = new
ResultCallback<DriveFolder.DriveFileResult>() {
@Override
public void onResult(DriveFolder.DriveFileResult result) {
if (result.getStatus().isSuccess()) {
Toast.makeText(getApplicationContext(), "file created: "+""+
result.getDriveFile().getDriveId(), Toast.LENGTH_LONG).show();
}
return;
}
};
@Override
protected void onActivityResult(final int requestCode,
final int resultCode, final Intent data) {
switch (requestCode) {
case REQUEST_CODE_OPENER:
if (resultCode == RESULT_OK) {
mFileId = (DriveId) data.getParcelableExtra(
OpenFileActivityBuilder.EXTRA_RESPONSE_DRIVE_ID);
Log.e("file id", mFileId.getResourceId() + "");
String url = "https://drive.google.com/open?id=" + mFileId.getResourceId();
new DownloadFileFromURL().execute(url);
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);
DriveFile googleDriveFile = Drive.DriveApi.getFile(mGoogleApiClient, driveId);
DriveResource.MetadataResult mdRslt = googleDriveFile.getMetadata(mGoogleApiClient).await();
if(mdRslt!= null && mdRslt.getStatus().isSuccess()){
mdRslt.getMetadata().getTitle();
System.out.println("The title is : " + driveId);
}
}
break;
default:
super.onActivityResult(requestCode, resultCode, data);
break;
}
}
public Context getAppContext() {
return appContext;
}