Develop Reference

Telegram API authentication and documentation

I am new in android. I want to use telegram API to develop my own telegram application. There are two problems. 1) I can not find any code sample or documentation or tutorial. I have searched a lot and I have study telegram documentation here. .2) I have used following code to authenticate in telegram. But it does not work. why? code has copied from here.
TelegramApi api = new TelegramApi(new MemoryApiState(false), new appInfo(12345,"Sony","are these values important?","1","en"), new apiCallback());
// Create request
String phoneNumber = "98123456789";
TLRequestAuthCheckPhone checkPhone = new TLRequestAuthCheckPhone(phoneNumber);
// Call service synchronously
TLCheckedPhone checkedPhone = null;
try {
Log.d("meme", "----");
checkedPhone = api.doRpcCall(checkPhone);
boolean invited = checkedPhone.getPhoneInvited();
boolean registered = checkedPhone.getPhoneRegistered();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
Log.d("meme", "IOException");
}

Deleting call log of a be number

I am using the following code to delete a particular number from the call log, but it is not working on Android Marshmallow:
String queryString = "NUMBER=" + number;
try {
context.getContentResolver().delete(CallLog.Calls.CONTENT_URI, queryString, null);
} catch (Exception e) {
e.printStackTrace();
}
How can I delete the call log on Android Marshmallow?

On Marshmallow you will need to request the permissions from user to read and write from call log
See official doc link below on how to request permissions
http://developer.android.com/training/permissions/requesting.html

How to catch Amazon AWS errors Android

I am constantly getting error reports (from users) such as:
Caused by: Status Code: 400, AWS Service: AmazonSimpleDB, AWS Request ID: c5cb109d-bbff-fcea-bc0d-0cb60ff8f6af, AWS Error Code: RequestExpired, AWS Error Message: Request has expired. Timestamp date is 2012-06-06T13:19:59.415Z. Current date is 2012-06-06T14:20:03Z
Apparently this is because the user has the wrong timezone or something set? Regardless, I would like to catch this particular error and post a message to the user asking them to check their timezone settings however I can't find a way to do it. If I catch AmazonServiceException, the error shows up as null.
How can I catch errors based on Status Code or even Error Code? The current code that I tried looks like this:
try {
dostuff()
} catch (IOException e) {
updateAWS("DownloadErrors");
return "filenotfound";
} catch (AmazonServiceException e) {
return "downloadfail";
}
However AmazonServiceException e is always null so I can't pull any information from it.
other code:
private void doStuff() throws IOException, AmazonServiceException{
//code here
}

Apparently this is what I needed. SDb tracks "RequestExpired" and S3 uses "RequestTimeTooSkewed"
Also, this appears to be occurring because the system time is >15 minutes different than the AWS server. I put a note to the user to check their time and use "Automatic" date/time if possible. Tested it myself and reproduced the error as well as the solution.
try {
result = doOperations();
} catch (AmazonServiceException e) {
if (e.getErrorCode().equals("RequestExpired") || e.getErrorCode().equals("RequestTimeTooSkewed")) {
result = "timestamp";
}
}
return result;
}

How to upload Image and tweet the message without using TweetPic for twitter?

In my application i am using tweetPic to uploaded image but with the image is only able to see on the tweetPic.
Instead of that i want to upload the picture on the twitter and also with the custom message. So how it is possible?
Twitter OAuth is also required for that.
I want any demo or sample example app that done like that.
Thanks.

Well i have search many but still not get the answer as i want.
Finally i use this to upload the photo on Twitter with the Custom Message:
File picture = new File(APP_FILE_PATH + "/"+filename+".jpg");
// Create TwitPic object and allocate TwitPicResponse object
TwitPic tpRequest = new TwitPic(TWITTER_NAME, TWITTER_PASSWORD);
TwitPicResponse tpResponse = null;
// Make request and handle exceptions
try {
tpResponse = tpRequest.uploadAndPost(picture, customMessageEditText.getText()+" http://www.MySite.com/");
}
catch (IOException e) {
e.printStackTrace();
}
catch (TwitPicException e) {
e.printStackTrace();
}
// If we got a response back, print out response variables
if(tpResponse != null) {
tpResponse.dumpVars();
System.out.println(tpResponse.getStatus());
if(tpResponse.getStatus().equals("ok")){
Toast.makeText(getApplicationContext(), "Photo posted on Twitter.",Toast.LENGTH_SHORT).show();
}
}
Still in search of the Twitter Demo to tweet pics on the Twitter with custom message with twitter OAuth and Without using twitPic.
Enjoy. :)
Thanks.

Android OAuth: Exception on retrieveAccessToken()

I'm setting up OAuth for my Android app. To test it I did the following:
Added signpost-core-1.2.1.1.jar and signpost-commonshttp4-1.2.1.1.jar to my project, added the variables "CommonsHttpOAuthConsumer consumer" and "CommonsHttpOAuthProvider provider" and did the following when the button is clicked:
consumer = new CommonsHttpOAuthConsumer("xxx", "yyy");
provider = new CommonsHttpOAuthProvider("https://api.twitter.com/oauth/request_token",
"https://api.twitter.com/oauth/access_token",
"https://api.twitter.com/oauth/authorize");
oauthUrl = provider.retrieveRequestToken(consumer, "myapp://twitterOauth");
persistOAuthData();
this.startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(oauthUrl)));
persistOAuthData() does the following:
protected void persistOAuthData()
{
try
{
FileOutputStream providerFOS = this.openFileOutput("provider.dat", MODE_PRIVATE);
ObjectOutputStream providerOOS = new ObjectOutputStream(providerFOS);
providerOOS.writeObject(this.provider);
providerOOS.close();
FileOutputStream consumerFOS = this.openFileOutput("consumer.dat", MODE_PRIVATE);
ObjectOutputStream consumerOOS = new ObjectOutputStream(consumerFOS);
consumerOOS.writeObject(this.consumer);
consumerOOS.close();
}
catch (Exception e) { }
}
So, the consumer and the provider are saved before opening the browser, like described here.
In the onResume() method I load the provider and consumer data and do the following:
Uri uri = this.getIntent().getData();
if (uri != null && uri.getScheme().equals("myapp") && uri.getHost().equals("twitterOauth"))
{
verifier = uri.getQueryParameter(oauth.signpost.OAuth.OAUTH_VERIFIER);
if (!verifier.equals(""))
{
loadOauthData();
try
{
provider.retrieveAccessToken(consumer, verifier);
}
catch (OAuthMessageSignerException e) {
e.printStackTrace();
} catch (OAuthNotAuthorizedException e) {
e.printStackTrace();
} catch (OAuthExpectationFailedException e) {
e.printStackTrace();
} catch (OAuthCommunicationException e) {
e.printStackTrace();
}
}
}
So, what works:
1) I do get a requestToken and a requestSecret.
2) I do get the oauthUrl.
3) I am directed to the browser page to authorize my app
4) I am getting redirected to my app.
5) I do get the verifier.
But calling retrieveAccessToken(consumer, verifier) fails with an OAuthCommunicationException saying "Communication with the service provider failed: null".
Does anyone know what might be the reason? Some people seem to have problems getting the requestToken, but that just works fine. I wonder if it might be a problem that my app has also included the apache-mime4j-0.6.jar and httpmime-4.0.1.jar which I need for multipart upload.

Okay, I figured it out. Maybe this is helpful to others:
First of all, you do not need to save the whole consumer and provider object. All you need to do is store the requestToken and the requestSecret. Luckily, those are Strings, so you don't need to write them to disk or anything. Just store them in the sharedPreferences or something like that.
Now, when you get redirected by the browser and your onResume() method is called, just do the following:
//The consumer object was lost because the browser got into foreground, need to instantiate it again with your apps token and secret.
consumer = new CommonsHttpOAuthConsumer("xxx", "yyy");
//Set the requestToken and the tokenSecret that you got earlier by calling retrieveRequestToken.
consumer.setTokenWithSecret(requestToken, tokenSecret);
//The provider object is lost, too, so instantiate it again.
provider = new CommonsHttpOAuthProvider("https://api.twitter.com/oauth/request_token",
"https://api.twitter.com/oauth/access_token",
"https://api.twitter.com/oauth/authorize");
//Now that's really important. Because you don't perform the retrieveRequestToken method at this moment, the OAuth method is not detected automatically (there is no communication with Twitter). So, the default is 1.0 which is wrong because the initial request was performed with 1.0a.
provider.setOAuth10a(true);
provider.retrieveAccessToken(consumer, verifier);
That's it, you can receive the token and the secret with getToken() and getTokenSecret(), now.

Hi Manuel i see you are avoidin the OAuthocalypse too!
heres is a good example to implement OAuth for Twitter using sharedPreferences to save requestToken and the requestSecret, like your solution.
http://github.com/brione/Brion-Learns-OAuth
by Brion Emde
heres the video
hope this helps other developers =)