The following program will display the "shared files with you" from google drive. i am displaying all the files in a listView, here i want to download the google drive file whenever a user clicks the list item and i have written a code to get file's drive id.
This is what i have done in the following code.
Please help me to download a file from google drive whenever a user clicks the list item using google drive android api.
public class MainActivity extends BaseDemoActivity{
private static final String TAG = "MainActivity";
private ListView mResultsListView;
private ResultsAdapter mResultsAdapter;
private ProgressBar mProgressBar;
private DriveId mSelectedFileDriveId;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mResultsListView = (ListView) findViewById(R.id.listViewSamples);
mResultsAdapter = new ResultsAdapter(this);
mResultsListView.setAdapter(mResultsAdapter);
mResultsListView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
if (mSelectedFileDriveId != null) {
open();
return;
}
}
});
}
private void open() {
showMessage("Select files drive id = "+mSelectedFileDriveId);
// Reset progress dialog back to zero as we're
// initiating an opening request.
// mProgressBar.setProgress(0);
DownloadProgressListener listener = new DownloadProgressListener() {
@Override
public void onProgress(long bytesDownloaded, long bytesExpected) {
// Update progress dialog with the latest progress.
int progress = (int)(bytesDownloaded*100/bytesExpected);
Log.d(TAG, String.format("Loading progress: %d percent", progress));
mProgressBar.setProgress(progress);
}
};
Drive.DriveApi.getFile(getGoogleApiClient(), mSelectedFileDriveId)
.open(getGoogleApiClient(), DriveFile.MODE_READ_WRITE, listener)
.setResultCallback(driveContentsCallback);
mSelectedFileDriveId = null;
}
private ResultCallback<DriveContentsResult> driveContentsCallback =
new ResultCallback<DriveContentsResult>() {
@Override
public void onResult(DriveContentsResult result) {
if (!result.getStatus().isSuccess()) {
showMessage("Error while opening the file contents");
return;
}
showMessage("File contents opened");
}
};
/**
* Clears the result buffer to avoid memory leaks as soon as the activity is no longer
* visible by the user.
*/
@Override
protected void onStop() {
super.onStop();
mResultsAdapter.clear();
}
@Override
public void onConnected(Bundle connectionHint) {
super.onConnected(connectionHint);
Drive.DriveApi.requestSync(getGoogleApiClient())
.setResultCallback(statusCallback);
showMessage("Connecting ...");
}
final private ResultCallback<Status> statusCallback =
new ResultCallback<Status>() {
@Override
public void onResult(Status arg0) {
// TODO Auto-generated method stub
showMessage("Fetching...");
if(arg0.getStatus().isSuccess()){
Query query = new Query.Builder()
.addFilter(Filters.sharedWithMe())
.build();
Drive.DriveApi.query(getGoogleApiClient(), query)
.setResultCallback(metadataCallback);
}else{
showMessage("Error = "+arg0);
}
}
};
final private ResultCallback<DriveApi.MetadataBufferResult> metadataCallback =
new ResultCallback<DriveApi.MetadataBufferResult>() {
@Override
public void onResult(DriveApi.MetadataBufferResult result) {
// TODO Auto-generated method stub
showMessage("onResult ...");
if (!result.getStatus().isSuccess()) {
showMessage("Problem while retrieving results");
return;
}
mResultsAdapter.clear();
mResultsAdapter.append(result.getMetadataBuffer());
MetadataBuffer buffer = result.getMetadataBuffer();
Metadata meta = buffer.get(0);
Log.v(TAG,"WEB CONTENT LINK = "+meta.getWebContentLink());
mSelectedFileDriveId = (DriveId) meta.getDriveId();
showMessage("Count = "+mResultsAdapter.getCount());
}
};
}
