I'm completely new to Google's Cloud Platform and I'm having trouble setting it up for my Android device. I am attempting to follow this tutorial and I'm at the point of trying to test my backend with my Android Emulator. The emulator, however, gives me this message after 20 seconds, Where instead it should say my name. Here's my code so far:
MainActivity.java
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
buildUI();
new EndpointsAsyncTask().execute(new Pair<Context, String>(this, "Solomon"));
}
EndpointsAsyncTask.java
public class EndpointsAsyncTask extends AsyncTask<Pair<Context, String>, Void, String> {
private static MyApi myApiService = null;
private Context context;
#Override
protected String doInBackground(Pair<Context, String>... params) {
if(myApiService == null) { // Only do this once
MyApi.Builder builder = new MyApi.Builder(AndroidHttp.newCompatibleTransport(),
new AndroidJsonFactory(), null)
// options for running against local devappserver
// - 10.0.2.2 is localhost's IP address in Android emulator
// - turn off compression when running against local devappserver
.setRootUrl("http://10.0.2.2:8080/_ah/api/")
.setGoogleClientRequestInitializer(new GoogleClientRequestInitializer() {
#Override
public void initialize(AbstractGoogleClientRequest<?> abstractGoogleClientRequest) throws IOException {
abstractGoogleClientRequest.setDisableGZipContent(true);
}
});
// end options for devappserver
myApiService = builder.build();
}
context = params[0].first;
String name = params[0].second;
try {
return myApiService.sayHi(name).execute().getData();
} catch (IOException e) {
return e.getMessage();
}
}
#Override
protected void onPostExecute(String result) {
Toast.makeText(context, result, Toast.LENGTH_LONG).show();
}
}
All Help is appreciated!
EDIT: Part of the problem was that I was running Endpoints Backend rather than the App Engine Servlet Backend. But now I'm now getting "connection refused" and I am running the App Engine Servlet Backend. Any Ideas?
After a tough few days, i found that the problem was that I needed to change my rootUrl from http://10.0.2.2:8080/_ah/api/ to my appspot domain. Now I'm getting the Hello World message.
Related
My android app uses google endpoints as a scalable backend solution. However, I am having trouble calling it from the android client.
I call an async task class from an activity and in the async task class call the endpoints method. In this case the default sayHi() method is called and the message should be displayed in a toast using the onPostExecute(String result) method.
However when I run the app module in the emulator, this error appears in the toast:
failed to connect to /10.0.2.2 (port 8080) after 20000ms: isConnected failed: ECONNREFUSED (Connection refused)
Here is the code that calls the async task from the activity:
Profile profile = new Profile(firstName, lastName, birthday);
new EndpointTask(). new SaveProfileTask(profile, this).execute();
Here is the async task class:
public class EndpointTask {
public class SaveProfileTask extends AsyncTask<Void, Void, String> {
private final String LOG_TAG = SaveProfileTask.class.getSimpleName();
private MyApi mApi;
private Profile mProfile;
private Context mContext;
public SaveProfileTask(Profile profile, Context context) {
mProfile = profile;
mContext = context;
}
#Override
protected String doInBackground(Void... params) {
if (mApi == null) {
MyApi.Builder builder = new MyApi.Builder(AndroidHttp.newCompatibleTransport(),
new AndroidJsonFactory(), null)
// options for running against local devappserver
// - 10.0.2.2 is localhost's IP address in Android emulator
// - turn off compression when running against local devappserver
.setRootUrl("http://10.0.2.2:8080/_ah/api/")
.setGoogleClientRequestInitializer(new GoogleClientRequestInitializer() {
#Override
public void initialize(AbstractGoogleClientRequest<?> abstractGoogleClientRequest) throws IOException {
abstractGoogleClientRequest.setDisableGZipContent(true);
}
});
mApi = builder.build();
}
try {
return mApi.sayHi(mProfile.getFirstName()).execute().getData();
} catch (IOException e) {
return e.getMessage();
}
}
#Override
protected void onPostExecute(String result) {
Toast.makeText(mContext, result, Toast.LENGTH_LONG).show();
Log.d(LOG_TAG, "ERROR: " + result);
}
}
}
Most of this is taken from the github repo here. Which is part of the official android documentation for hooking up the client with the backend for google app engine.
Why is this error occurring and how can it be fixed?
Thanks guys, happy coding.
I am trying to set up a java server and an Android client whose communication is via Tor. Using this pages instructions I have managed to do so, using a Java client. But when I am trying to use the client side code to Android project the app crashes. My android-client code is below.
MainActivity.java
public class MainActivity extends Activity {
private BootStrapper bootstrapper;
#SuppressWarnings("unchecked")
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bootstrapper = new BootStrapper();
bootstrapper.execute();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
private class BootStrapper extends AsyncTask<Object, Object, Object> {
#Override
protected Object doInBackground(Object... params) {
TcpipNetAddress remoteAddress = new TcpipNetAddress("localhost", 3000);
NetLayer netLayer = NetFactory.getInstance().getNetLayerById(NetLayerIDs.TCPIP);
netLayer.waitUntilReady();
try {
NetSocket netSocket = netLayer.createNetSocket(null, null, remoteAddress);
} catch (IOException e) {
e.printStackTrace();
}
return null;}
}
}
I am having not errors in the server side but on the client side this is the output of the logCat
06-07 22:07:26.981: W/dalvikvm(2364): VFY: unable to resolve new-instance 2065 (Lorg/silvertunnel_ng/netlib/api/util/TcpipNetAddress;) in Lcom/example/hellotor/MainActivity$BootStrapper;
Hello try not to use this library on android because it has overall problems with the memory. Consider to take a look at this library for android. it is new, functional and fully updated
I am working on developer authenticated project.And I am trying to get credentials using this below code.But it is giving me following error.
I have pasted IdentityId and Token manually into this code from server code:
Caused by: com.amazonaws.services.cognitoidentity.model.ResourceNotFoundException: Identity 'ap-northeast-1:fe81cd76-e9d4-4416-99ea-b684b78743c8' not found. (Service: AmazonCognitoIdentity; Status Code: 400; Error Code: ResourceNotFoundException; Request ID: 2ac65fe8-d41a-11e5-8674-677eefdb5331)
at com.amazonaws.http.AmazonHttpClient.handleErrorResponse(AmazonHttpClient.java:709)
at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:385)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:196)
at com.amazonaws.services.cognitoidentity.AmazonCognitoIdentityClient.invoke(AmazonCognitoIdentityClient.java:533)
at com.amazonaws.services.cognitoidentity.AmazonCognitoIdentityClient.getCredentialsForIdentity(AmazonCognitoIdentityClient.java:406)
at com.example.sandesh.aws.MainActivity$network.doInBackground(MainActivity.java:101)
at com.example.sandesh.aws.MainActivity$network.doInBackground(MainActivity.java:52)
at android.os.AsyncTask$2.call(AsyncTask.java:292)
Here is my code: MainActivity.java
public class MainActivity extends AppCompatActivity {
Button button;
protected static CognitoCachingCredentialsProvider credentialsProvider = null;
private GetCredentialsForIdentityResult credentialsForIdentityResult;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = (Button)findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
network net = new network();
net.execute();
}
});
}
public class network extends AsyncTask<Void,Void,String>{
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected String doInBackground(Void... params) {
Authentication developerProvider = new Authentication(
null,
"ap-northeast-1:XXXXXXXXXXXXXXXXXX",
Regions.AP_NORTHEAST_1);
CognitoCachingCredentialsProvider credentialsProvider = new CognitoCachingCredentialsProvider(
getApplicationContext(),
developerProvider,
Regions.AP_NORTHEAST_1);
HashMap<String, String> loginsMap = new HashMap<String, String>();
loginsMap.put(developerProvider.getProviderName(), "7386372772");
credentialsProvider.setLogins(loginsMap);
credentialsProvider.refresh();
GetCredentialsForIdentityRequest credentialsForIdentityRequest = new GetCredentialsForIdentityRequest();
credentialsForIdentityRequest.setIdentityId(developerProvider.getIdentityId());
credentialsForIdentityRequest.setLogins(loginsMap);
AmazonCognitoIdentityClient cognitoIdentityClient = new AmazonCognitoIdentityClient(credentialsProvider);
credentialsForIdentityResult = cognitoIdentityClient.getCredentialsForIdentity(credentialsForIdentityRequest);
Log.d("access_key",credentialsForIdentityResult.getCredentials().getAccessKeyId());
return credentialsForIdentityResult.getCredentials().getAccessKeyId();
}
#Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
}
}}
Authentication.java
public class Authentication extends AWSAbstractCognitoDeveloperIdentityProvider {
private static final String PROVIDERNAME = "login.blupinch.app";
public String response = " ";
String line = " ";
public Authentication(String accountId, String identityPoolId, Regions region) {
super(accountId, identityPoolId, region);
}
#Override
public String getProviderName() {
return PROVIDERNAME;
}
public String refresh() {
setToken(null);
if (getProviderName() != null &&
!this.loginsMap.isEmpty() &&
this.loginsMap.containsKey(getProviderName())) {
update(identityId, token);
return "eyJraWQiOiJhcC1ub3J0aGVhc3QtMTEiLCJ0eXAiOiJKV1MiLCJhbGciOiJSUzUxMiJ9.eyJzdWIiOiJhcC1ub3J0aGVhc3QtMTpmZTgxY2Q3Ni1lOWQ0LTQ0MTYtOTllYS1iNjg0Yjc4NzQzYzgiLCJhdWQiOiJhcC1ub3J0aGVhc3QtMTphODcxZmE1Zi0yM2EyLTQ4MGQtYmFhNi1iNGVkMzE0MzcyNDQilCJhbXIiOlsiYXV0aGVudGljYXRlZCIsImxvZ2luLmJsdXBpbmNoLmFwcCIsImxvZ2luLmJsdXBpbmNoLmFwcDphcC1ub3J0aGVhc3QtMTphODcxZmE1Zi0yM2EyLTQ4MGQtYmFhNi1iNGVkMzE0MzcyNDQ6NzM4NjM3Mjg3MiJdLCJpc3MiOiJodHRwczovL2NvZ25pdG8taWRlbnRpdHkuYW1hem9uYXdzLmNvbSIsImV4cCI6MTQ1NTU5NTM5NywiaWF0IjoxNDU1NTU5Mzk3fQ.fHHH6aeCn5EaJGxGD6tw7bWyQpPHuYcW8SZLRGVn-3cbamJrWEPmUnNvcLJ-D6nL8AvMQy7-s1LGQ5MNaiuIH7QF6W8aWt2OMALmA_Y7eqpGQ6iQXVma_jTZSpiyBe2cPNggWgeslPtFxomwE90vW0rzS1sY3D5Y3UbnrIHNdiPKIzzP9JaQo1IsTJMKEpQM-jzWP6stV1radDuIzWQroBVQseOQSD-MXV_-cgWWSx0eQmtFbjJW6RP_nACgh0uTbGmMuOi2iKXKQAdGlYWO-PHlShbiHT-WLQoZNWuh95Hh9dMldv-mNdnYSblqYyqptLA3kObioI08XXkTqwaaAw";
} else {
this.getIdentityId();
return null;
}
}
public String getIdentityId() {
identityId = "ap-northeast-1:XXXXXXXXXXXXXXXXXXXXXXXX";
if (identityId == null) {
if (getProviderName() != null && !this.loginsMap.isEmpty()
&& this.loginsMap.containsKey(getProviderName())) {
update(identityId, token);
return "ap-northeast-1:XXXXXXXXXXXXXXXXXXXX";
} else {
return super.getIdentityId();
}
} else {
return identityId;
}
}}
I have tried it in PHP where I performed getOpenIdTokenForDeveloperIdentity , stsClient and AssumerolewithWebIdentity to get credentials it worked great. Thank you in advance.
When using Developer Authenticated Identities, the logins map for the call GetCredentialsForIdentity should have "cognito-identity.amazonaws.com" as the key instead of developer provider name.
Also, you should not be calling this method yourself, the SDK will take care of this.
Update:
When calling getCredentialsForIdentity, in the logins map, when key is "cognito-identity.amazonaws.com", the value should be the token you got from your backend after calling GetOpenIdTokenForDeveloperIdentity. You do not need to get the credentials for doing AWS operations, just initialize the AWS Service Client with this credentials provider and you should be good to go.
(1) In your application, you do not need to call GetCredentialsForIdentity, the CredentialsProvider does all of this for you. (And ensures the correct arguments are passed in).
--> You can test that you are getting credentials by making a call to another service that requires credentials (ex S3)
--> Another option is to call getCredentials() on the Credentials Provider and validate that an exception is not thrown
(2) In Authentication.java, refresh, you seem to be using a hard coded token? This is likely expired, and you should make sure to get new ones. (If you are just testing app side, make sure you hard code a fresh one).
(3) In Authentication.java, refresh, it looks like you are calling update with a null token.
(4) Also make sure you are getting tokens for the hard coded identity you are using. (Again, you should only be hard coding this if you are testing).
I am new to android and java and am trying to setup a login page that posts to a webpage that verifies the credentials and returns a cookie.
I am using the login template included with eclipse. I am not sure what to put for the
// TODO: attempt authentication against a network service.
All I need it so post to my page like this: www.mywebsite.com/login?userid=john&password=test
and if the credentials are correct I get a json success string and cookie back. How can I incorporate this into this template or what do i need to put in place of the authentication against a network service
public class UserLoginTask extends AsyncTask<Void, Void, Boolean> {
#Override
protected Boolean doInBackground(Void... params) {
// TODO: attempt authentication against a network service.
try {
// Simulate network access.
Thread.sleep(2000);
} catch (InterruptedException e) {
return false;
}
for (String credential : DUMMY_CREDENTIALS) {
String[] pieces = credential.split(":");
if (pieces[0].equals(mEmail)) {
// Account exists, return true if the password matches.
return pieces[1].equals(mPassword);
}
}
// TODO: register the new account here.
return true;
}
#Override
protected void onPostExecute(final Boolean success) {
mAuthTask = null;
showProgress(false);
if (success) {
finish();
} else {
mPasswordView
.setError(getString(R.string.error_incorrect_password));
mPasswordView.requestFocus();
}
}
#Override
protected void onCancelled() {
mAuthTask = null;
showProgress(false);
}
}
}
edit: I tried searching for an example of this but did not find one that fit my case. Any links to a solution or example of what im trying to do are appreciated.
I have the following timer in onCreate():
new Timer().scheduleAtFixedRate(new TimerTask(){
public void run() {
Log.i("EOH","timer");
updateMarkers();
}}, 0, 1000);
As you can see, it calls the function updateMarkers() every second.
Here is updateMarkers():
private void updateMarkers(){
Log.i("EOH","updateMarkers()");
Drawable drawable = this.getResources().getDrawable(R.drawable.google_maps_marker);
final MyItemizedOverlay itemizedoverlay = new MyItemizedOverlay(drawable,mapView);
AsyncHttpClient myClient = new AsyncHttpClient();
final PersistentCookieStore myCookieStore = new PersistentCookieStore(context);
myClient.setCookieStore(myCookieStore);
RequestParams params = new RequestParams();
params.put("sw_lat", String.valueOf(centrePoint.getLat()-(Double.valueOf(mapView.getLatitudeSpan())/2.0)));
params.put("sw_lng", String.valueOf(centrePoint.getLat()-(Double.valueOf(mapView.getLongitudeSpan())/2.0)));
params.put("ne_lat", String.valueOf(centrePoint.getLat()+(Double.valueOf(mapView.getLatitudeSpan())/2.0)));
params.put("ne_lng", String.valueOf(centrePoint.getLat()+(Double.valueOf(mapView.getLongitudeSpan())/2.0)));
myClient.post("http://www.prestocab.com/ajax/getRanks.php", params, new AsyncHttpResponseHandler() {
public void onStart() {
thinger.setVisibility(View.VISIBLE);
Log.i("EOH","onStart()");
}
public void onSuccess(String response) {
Log.i("EOH","xxx: "+response);
thinger.setVisibility(View.INVISIBLE);
try{
JSONArray arr=(JSONArray) new JSONTokener(response).nextValue();
Log.i("EOH","yyy: "+String.valueOf(arr.length()));
}catch(JSONException e){
}
}
public void onFailure(Throwable e) {
thinger.setVisibility(View.INVISIBLE);
}
public void onFinish() {
}
});
}
The problem I'm having is that Log.i("EOH","onStart()"); never gets called! However Log.i("EOH","updateMarkers()"); gets called...
What am I doing wrong?
Many thanks in advance,
I found out that current implementation of AsyncHttpClient - the first I start using - version 1.4.3 (2013-09-25) has some problem with local intranet hostnames. I was testing using a local network with the webserver running on my computer and it was calling onStart, but never calling onSuccess or any other methods.
My hostname was RM_UB02 (without the Internet domain suffixes). Android and Chrome web browsers were able to resolve the URL (http:// RM_UB02/test/page.html), but AsyncHttpClient never worked.
I changed to the local intranet IP address (192.168.1.104) and it started working.
I figured out that it was working all right for Internet names (http://slashdot.org ), but not for local networks.
#Override
public void onStart()
{
}
#Override
public void onFinish()
{
}
#Override
public void onSuccess()
{
}
#Override
public void onFailure()
{
}