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我必須在我的Android應用程序中實現同步。所以，我需要使用用戶的谷歌驅動器來存儲和檢索信息。我創建了將* .db文件存儲到驅動器的功能。但問題是用戶每次都必須確認文件上傳操作。我想在沒有確認的情況下關閉每個應用程序上傳文件。可能嗎 ？有沒有其他的方式來同步sqlite數據庫，而沒有自己的服務器？同步SQLite數據庫到谷歌驅動器沒有確認
public static void backUpDb(final Activity context){
mGoogleApiClient = new GoogleApiClient.Builder(context)
.addApi(Drive.API)
.addScope(Drive.SCOPE_FILE)
.addConnectionCallbacks(new ConnectionCallbacks() {
@Override
public void onConnectionSuspended(int arg0) {
}
@Override
public void onConnected(Bundle arg0) {
Log.i(TAG, "API client connected.");
saveFileToDrive(context);
}
})
.addOnConnectionFailedListener(
new OnConnectionFailedListener() {
@Override
public void onConnectionFailed(
ConnectionResult result) {
Log.i(TAG,
"GoogleApiClient connection failed: "
+ result.toString());
if (!result.hasResolution()) {
// show the localized error
// dialog.
GooglePlayServicesUtil
.getErrorDialog(
result.getErrorCode(),
context, 0).show();
return;
}
try {
result.startResolutionForResult(
context,
REQUEST_CODE_RESOLUTION);
} catch (SendIntentException e) {
Log.e(TAG,
"Exception while starting resolution activity",
e);
}
}
}).build();
mGoogleApiClient.connect();
//mGoogleApiClient.disconnect();
}
public static void saveFileToDrive(final Activity context) {
Drive.DriveApi.newContents(mGoogleApiClient).setResultCallback(
new ResultCallback<ContentsResult>() {
@Override
public void onResult(ContentsResult result) {
if (!result.getStatus().isSuccess()) {
return;
}
OutputStream outputStream = result.getContents()
.getOutputStream();
try {
// outputStream.write(bitmapStream.toByteArray());
//ByteArrayOutputStream bitmapStream = new ByteArrayOutputStream();
File dbFile = context.getDatabasePath(databaseName);
//dbFile.
int size = (int) dbFile.length();
byte[] bytes = new byte[size];
BufferedInputStream buf = new BufferedInputStream(new FileInputStream(dbFile));
buf.read(bytes, 0, bytes.length);
buf.close();
byte[] b = "aa".getBytes();
outputStream.write(bytes);
} catch (IOException e1) {
Log.i(TAG, "Unable to write file contents.");
}
String mimeType = MimeTypeMap.getSingleton().getExtensionFromMimeType("db");
MetadataChangeSet metadataChangeSet = new MetadataChangeSet.Builder()
.setMimeType(mimeType).setTitle("aldkan.db")
.build();
IntentSender intentSender = Drive.DriveApi
.newCreateFileActivityBuilder()
.setInitialMetadata(metadataChangeSet)
.setInitialContents(result.getContents())
.build(mGoogleApiClient);
try {
context.startIntentSenderForResult(intentSender, 2,
null, 0, 0, 0);
} catch (SendIntentException e) {
e.printStackTrace();
}
}
});
}