Develop Reference

Youtube Get uploaded video list. FileNotFound Error

I am trying to get list of videos uploaded on my YouTube channel using following
https://www.googleapis.com/youtube/v3/search?part=snippet&channelId{MY_CHANNEL_ID}&maxResults=50&key={MY_APP_ID}
I have created App in Google App Console and generate APP ID for the same. But when I trying to access it through my Android application getting java.io.FileNotFoundException error
I have given application identifier and SHA1 also, If I try to access through Web Browser key without any other constrains it works well and returns all the video list but in case of Android it is not working.
#Override
protected String doInBackground(Void... voids) {
HttpURLConnection urlConnection = null;
String urlString = "https://www.googleapis.com/youtube/v3/search?part=snippet&channelId=UCrF362wkcVnjqqPRsSEzvgg&maxResults=50&key=AIzaSyAiAFjZb1eVdRxVWnymrhuAb1iDlmYupu8";
//urlString = "https://www.googleapis.com/youtube/v3/playlistItems?part=snippet&playlistId=PLTqSMwQKOhUhl7gm7h6YwX6XPYr0ViBtu&key=AIzaSyAiAFjZb1eVdRxVWnymrhuAb1iDlmYupu8";
String jsonString = new String();
URL url = null;
try {
url = new URL(urlString);
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.setReadTimeout(10000 /* milliseconds */);
urlConnection.setConnectTimeout(15000 /* milliseconds */);
urlConnection.setDoOutput(true);
urlConnection.connect();
BufferedReader br=new BufferedReader(new InputStreamReader(url.openStream()));
char[] buffer = new char[1024];
StringBuilder sb = new StringBuilder();
String line;
while ((line = br.readLine()) != null) {
sb.append(line+"\n");
}
br.close();
jsonString = sb.toString();
System.out.println("JSON: " + jsonString);
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (ProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return jsonString;
}
Error Log
BasicNetwork.performRequest: Unexpected response code 403 for https://www.googleapis.com/youtube/v3/search?part=snippet&channelId=UCrF362wkcVnjqqPRsSEzvgg&maxResults=50&key=AIzaSyAiAFjZb1eVdRxVWnymrhuAb1iDlmYupu8
05-13 15:28:26.607 19118-19151/com.jeevanmulmantra W/System.err: java.io.FileNotFoundException: https://www.googleapis.com/youtube/v3/search?part=snippet&channelId=UCrF362wkcVnjqqPRsSEzvgg&maxResults=50&key=AIzaSyAiAFjZb1eVdRxVWnymrhuAb1iDlmYupu8

Without looking at your API Console settings, I cannot say for sure. But from looking at the HTTP response, it looks like your IP address might be blocked by the Google authorization server. Hence, it is sending you back an unauthorized request HTTP status code 403.
Go to your API Console and select the None radio button from under the Key restrictions section. Then try again. It should work.

This is not exactly what you are asking but I will share my experience.
I had a similar situation a couple of months ago. Seaching on line I got to the conclusion that the YouTube api option for Android just doesn't work. I ended up with a more convenient solution for my development:
I got a YT api key for a website and bound it to the corresponding domain.
I Created a php file that gets the playlist from youtube twice a day using curl and cron job setup on the server. The playlist file in json format is then written to the web server (refreshed twice a day).
The Android app connects to my server intead of YTs and get the "cached" json play list from there.
This option drastically reduces the impact on the quota consumption because all the hits to the playlist go to the website.
If you are interested in this option I can share the php used for getting the play list.

I had the same problem, just regenerate another key and restrict it again with the package name and SHA1 from your Android Studio. It wasn't working with the old key regenerating the key and restricting it again worked for me.

Android: HttpUrlConnection object returns error 301 after connection

I'm trying to connect to a web API using a URL. However, I get a 301 error from the server (Moved Permanently), although the provided URL works very well with no errors when I try it in my browser.
Here is the code that builds the URL:
public Loader<List<Earthquake>> onCreateLoader(int i, Bundle bundle) {
SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
String minMagnitude = sharedPrefs.getString(
getString(R.string.settings_min_magnitude_key),
getString(R.string.settings_min_magnitude_default));
String orderBy = sharedPrefs.getString(
getString(R.string.settings_order_by_key),
getString(R.string.settings_order_by_default)
);
Uri baseUri = Uri.parse(USGS_REQUEST_URL);
Uri.Builder uriBuilder = baseUri.buildUpon();
uriBuilder.appendQueryParameter("format", "geojson");
uriBuilder.appendQueryParameter("limit", "10");
uriBuilder.appendQueryParameter("minmag", minMagnitude);
uriBuilder.appendQueryParameter("orderby", orderBy);
Log.i ("the uri is ", uriBuilder.toString());
return new EarthquakeLoader(this, uriBuilder.toString());
}
Here is the code that tries to connect to the resource represented by the URL:
private static String makeHttpRequest(URL url) throws IOException {
String jsonResponse = "";
// If the URL is null, then return early.
if (url == null) {
return jsonResponse;
}
Log.i("The received url is " , url +"");
HttpURLConnection urlConnection = null;
InputStream inputStream = null;
try {
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setReadTimeout(10000 /* milliseconds */);
urlConnection.setConnectTimeout(15000 /* milliseconds */);
urlConnection.setRequestMethod("GET");
urlConnection.connect();
// If the request was successful (response code 200),
// then read the input stream and parse the response.
if (urlConnection.getResponseCode() == 200) {
inputStream = urlConnection.getInputStream();
jsonResponse = readFromStream(inputStream);
} else {
Log.e(LOG_TAG, "Error response code: " + urlConnection.getResponseCode()); //this log returns 301
}
} catch (IOException e) {
Log.e(LOG_TAG, "Problem retrieving the earthquake JSON results.", e);
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
if (inputStream != null) {
// Closing the input stream could throw an IOException, which is why
// the makeHttpRequest(URL url) method signature specifies than an IOException
// could be thrown.
inputStream.close();
}
}
return jsonResponse;
}
I could know that the connection returns status code of 301 from the log provided in the case when the status code is not 200. I have also logged the generated URL, I copied it from the logcat and tried it in my browser and it worked well. Here is the built URL: http://earthquake.usgs.gov/fdsnws/event/1/query?format=geojson&limit=10&minmag=6&orderby=magnitude
I checked this question: Android HttpURLConnection receives HTTP 301 response code but it wasn't clear to me what is the solution for the problem.
Can you please help me identify and solve the problem?
UPDATE: As greenapps indicated in his comment, the connection is done through https. That comment identified the problem and helped me fix the code.
In my code, the string I used to build the basic URL, had the protocol value as http not https, it was:
private static final String USGS_REQUEST_URL =
"http://earthquake.usgs.gov/fdsnws/event/1/query";
After reading greenapps comment, I just changed the protocol part in the string to https, so it became:
private static final String USGS_REQUEST_URL =
"https://earthquake.usgs.gov/fdsnws/event/1/query";
That solved the problem.
Thanks.

If you click your http link here you will see that the browser shows a https page. You better use that url directly as there is redirection now.

This is because the address http to https transferred.
To avoid this, you need to convert the request address to https.

HTTPURLConnection - Outputstream POST to php on webserver

I'm getting mad about HttpUrlConnection an Outputstreams.
I just want to send a string to php and from there put it in a database.
The last two nights I read nearly thousand guides and threads about sending data to webserver, tried almost everything I read - and it's still not working.
protected void phpPOST(final String ServerURL, final String StringToPost)
{
Thread newthread = new Thread() {
public void run() {
//1. set URL and connect to server
HttpURLConnection connection = null;
try {
URL server = new URL(ServerURL + "teilnehmer_update.php");
connection = (HttpURLConnection) server.openConnection();
//2. set method to POST and enable output
connection.setRequestMethod("POST");
connection.setDoOutput(true);
//3. open outputstream and send string to url
OutputStreamWriter outstream = new OutputStreamWriter(connection.getOutputStream());
outstream.write(StringToPost);
outstream.flush();
outstream.close();
} catch (Exception e) {
e.printStackTrace();
Log.i("Error!", "ERROR is " + e);}
finally {if (connection != null) {connection.disconnect();}}
}
};
newthread.start();
}
I reduced my php-file to very simple, to secure it's not a php problem. Tried from browser, works fine.
<?php
// for testing, should create an empty file when no no data is recieved.
$file = fopen('test.txt', 'w');
$id = $_POST['id'];
fwrite($file, $id);
fclose($file);
?>
I don't get any errors - so, I don't know what to fix. LogCat is also empty.
I think the Problem is something with the Outputstream (also tried versions BufferdOS,OS,DataOS). As far as I get it, the connection is should open when I create the OS and write to it. - But, in my case it does not do anything...
Any ideas what's wrong with the code ?
Thanks

HttpURLConnection with POST "times out" on ICS, works in HC

My Android tablet application does not work with ICS due to a Login problem. When I looked at my code and ran it under debug mode on an ICS tablet, I see the problem but I don't understand it. The code functions correctly on all Honeycomb models that i have tested and in fact I have two tablets hooked up to my computer (one Samsung Galaxy Tab running 3.2, and a Motorola Xoom wifi running 4.0.3) and the code fails on ICS and works on HC.
The failure is a Socket Timeout exception. The timeout was 2000ms, but I upped it to 100000ms to test and it had no impact.
Using the browser on the ICS tablet, I can go to the URL and it responds, so it doesn't appear to be network related.
I am running on a background thread using AsyncTask.
Slurp just takes all of the input from the InputStream and using StringBuilder creates a string representation. Its not actually useful in this request but I added it to see what the server was replying with.
I am POSTing to the page the same way a user authenticates using the form, which is why I am using x-www-form-urlencoded.
Again, this code functions perfectly on Honeycomb but fails on ICS.
The code makes a connection but fails when it asks for a response from the server, almost like the server is still waiting for something... anyway, here is the code:
static public String authenticate(String service_url, String username, String password) throws IOException {
if (username == null || password == null)
throw new IOException();
String charset = "UTF-8";
String query = String.format("Email=%s&Password=%s",URLEncoder.encode(username, charset),URLEncoder.encode(password, charset));
byte [] data = query.getBytes(charset);
URL url = new URL(service_url);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestProperty("Accept-Charset", charset);
connection.setRequestProperty("Content-Length", Integer.toString(data.length));
connection.setDoOutput(true);
connection.setRequestMethod("POST");
connection.setReadTimeout(5000); // 2 second timeout.
try {
connection.connect();
DataOutputStream pw = new DataOutputStream (connection.getOutputStream());
pw.writeBytes(query);
pw.flush();
pw.close();
int code = connection.getResponseCode(); //SOCKET TIMEOUT HERE
if (code == 200 || code == 302)
{
InputStream is = connection.getInputStream();
String value = slurp(is);
List<String> cookies = connection.getHeaderFields().get("Set-Cookie");
if (cookies == null)
throw new IOException();
for (String cookie : cookies) {
if (cookie.startsWith("cpms")) {
cookieTime = new DateTime(); //crazy but the expires time in the cookie is not actually accurate.
return cookie; // this is the only correct path out.
}
}
}
else
Logger.e(StaticUtils.class, "Invalid response code while logging in: " + code);
}
catch (IOException ioe)
{
Logger.e(StaticUtils.class, ioe);
throw ioe; // log it and then throw it back.
} finally {
connection.disconnect();
}
return null;
}

Consuming a web service in an android application in localhost

I am trying to consume a web service that I created locally from an Android application.
My problem is that in my Android app, at a certain point, I have to give an URL with parameters that looks like this : http://localhost:8080/CalculatorApp/CalculatorWSService/add?i=1&j=1
where CalculatorWS is the web service I use, add is the operation in it and i and j are parameters of add operation. For now I am using a sample app Calculator (from NetBeans) for testing and I want to retrieve the correct URL to give to my web service client (Android app) so it can give me back an XML to parse.
I tried to use that URL mentioned above but it doesn't work.
Does anybody know what is the correct URL to put ?

you need to set URL as 10.0.2.2:portNr
portNr = the given port by ASP.NET Development Server
my current service is running on
localhost:3229/Service.svc
so my url is 10.0.2.2:3229
i'd fixed my problem this way
i hope it helps...

Use this URL:
http://10.0.2.2:8080/CalculatorApp/CalculatorWSService/add?i=1&j=1
Since Android emulator run on Virtual Machine therefore we have to use this IP address instead of localhost or 127.0.0.1

If you're using an emulator then read below paragraph taken from: Referring to localhost from the emulated environment
If you need to refer to your host computer's localhost, such as when
you want the emulator client to contact a server running on the same
host, use the alias 10.0.2.2 to refer to the host computer's loopback
interface. From the emulator's perspective, localhost (127.0.0.1)
refers to its own loopback interface.

sharktiger like you says on the comments, i'll paste here some code to help you to figure how to proced, this code try to connect to a web service and parse the InputStream retrieved, just like #Vikas Patidar and #MisterSquonk says, you must configure the url in the android code like them explain. So, i post my code
and example of call to HttpUtils...
public static final String WS_BASE = "http://www.xxxxxx.com/dev/xxx/";
public static final String WS_STANDARD = WS_BASE + "webserviceoperations.php";
public static final String REQUEST_ENCODING = "iso-8859-1";
/**
* Send a request to the servers and retrieve InputStream
*
* #throws AppException
*/
public static Login logToServer(Login loginData) {
Login result = new Login();
try {
// 1. Build XML
byte[] xml = LoginDAO.generateXML(loginData);
// 2. Connect to server and retrieve data
InputStream is = HTTPUtils.readHTTPContents(WS_STANDARD, "POST", xml, REQUEST_ENCODING, null);
// 3. Parse and get Bean
result = LoginDAO.getFromXML(is, loginData);
} catch (Exception e) {
result.setStatus(new ConnectionStatus(GenericDAO.STATUS_ERROR, MessageConstants.MSG_ERROR_CONNECTION_UNKNOWN));
}
return result;
}
and the method readHTTPContents from my class HTTPUtils
/**
* Get the InputStream contents for a specific URL request, with parameters.
* Uses POST. PLEASE NOTE: You should NOT use this method in the main
* thread.
*
* #param url
* is the URL to query
* #param parameters
* is a Vector with instances of String containing the parameters
*/
public static InputStream readHTTPContents(String url, String requestMethod, byte[] bodyData, String bodyEncoding, Map<String, String> parameters)
throws AppException {
HttpURLConnection connection = null;
InputStream is = null;
try {
URL urlObj = new URL(url);
if (urlObj.getProtocol().toLowerCase().equals("https")) {
trustAllHosts();
HttpsURLConnection https = (HttpsURLConnection) urlObj
.openConnection();
https.setHostnameVerifier(new HostnameVerifier() {
public boolean verify(String hostname, SSLSession session) {
return true;
}
});
connection = https;
} else {
connection = (HttpURLConnection) urlObj.openConnection();
}
// Allow input
connection.setDoInput(true);
// If there's data, prepare to send.
if (bodyData != null) {
connection.setDoOutput(true);
}
// Write additional parameters if any
if (parameters != null) {
Iterator<String> i = parameters.keySet().iterator();
while (i.hasNext()) {
String key = i.next();
connection.addRequestProperty(key, parameters.get(key));
}
}
// Sets request method
connection.setRequestMethod(requestMethod);
// Establish connection
connection.connect();
// Send data if any
if (bodyData != null) {
OutputStream os = connection.getOutputStream();
os.write(bodyData);
}
if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
throw new AppException("Error HTTP code " + connection.getResponseCode());
}
is = connection.getInputStream();
int numBytes = is.available();
if (numBytes <= 0) {
closeInputStream(is);
connection.disconnect();
throw new AppException(MessageConstants.MSG_ERROR_CONNECTION_UNKNOWN);
}
ByteArrayOutputStream content = new ByteArrayOutputStream();
// Read response into a buffered stream
int readBytes = 0;
while ((readBytes = is.read(sBuffer)) != -1) {
content.write(sBuffer, 0, readBytes);
}
ByteArrayInputStream byteStream = new ByteArrayInputStream(content.toByteArray());
content.flush();
return byteStream;
} catch (Exception e) {
// Logger.logDebug(e.getMessage());
throw new AppException(e.getMessage());
} finally {
closeInputStream(is);
closeHttpConnection(connection);
}
}
Hope this help you...