我是android开发的新手。我正在开发Android应用程序中的雅虎登录集成并返回主Activity。我已经完成了yahoo集成的所有步骤。我花了几天时间在android中搜索yahoo集成但是我找不到正确的方法。当我运行这个应用程序时，Toast将出现包含消息： -
（E /与服务提供商的通信失败：null（4194）：oauth.signpost.exception.OAuthCommunicationException：与服务提供商的通信失败：null）
然后会出现带OAuth引脚的对话框....请帮助我从哪里获得OAuth引脚以及如何通过此集成检索雅虎邮件。
package com.example.yhoointegration;
public class MainActivity extends ActionBarActivity {
private static final String REQUEST_TOKEN_ENDPOINT_URL = "https://api.login.yahoo.com/oauth/v2/get_request_token";
private static final String ACCESS_TOKEN_ENDPOINT_URL = "https://api.login.yahoo.com/oauth/v2/get_access_token";
private static final String AUTHORIZE_WEBSITE_URL = "https://api.login.yahoo.com/oauth/v2/request_auth";
private static final int PIN_DIALOG = 0;
String CALLBACK_URL = ""; // this should be the same as
// the
// SCHEME and HOST values in
// your AndroidManifes""t.xml file
String CONSUMER_KEY = "";
String CONSUMER_SECRET = "";
private CommonsHttpOAuthConsumer myConsumer;
private CommonsHttpOAuthProvider myProvider;
private String requestToken;
private String accessToken;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
callOAuth();
showDialog(PIN_DIALOG);
}
private void callOAuth() {
try {
// retrieve the consumer token and then sign it
myConsumer = new CommonsHttpOAuthConsumer(CONSUMER_KEY,
CONSUMER_SECRET);
myConsumer.setMessageSigner(new HmacSha1MessageSigner());
HttpClient client = new DefaultHttpClient();
// retrieve the provider by using the signed consumer token
myProvider = new CommonsHttpOAuthProvider(
REQUEST_TOKEN_ENDPOINT_URL, ACCESS_TOKEN_ENDPOINT_URL,
AUTHORIZE_WEBSITE_URL, client);
myProvider.setOAuth10a(true);
String aUrl = myProvider.retrieveRequestToken(myConsumer,
CALLBACK_URL);
requestToken = myConsumer.getToken();
Log.e("Token///", "" + requestToken);
startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(aUrl)));
} catch (Exception ex) {
Toast.makeText(getApplicationContext(), ex.getMessage(),
Toast.LENGTH_LONG).show();
Log.e(ex.getMessage(), ex.toString());
}
}
// this is the callback function that will run when oauth authenticates
// successfully
@Override
protected void onNewIntent(Intent intent) {
System.out.println("OnNewIntent...");
Toast.makeText(getApplicationContext(), "OnNewIntent - It works!",
Toast.LENGTH_LONG).show();
// whatever you want to do after authenticating goes here ....
}
AlertDialog createPinDialog() {
LayoutInflater factory = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
// LayoutInflater factory = LayoutInflater.from(this);
final View textEntryView = factory.inflate(R.layout.pin, null);
final EditText pinText = (EditText) textEntryView
.findViewById(R.id.pin_text);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Twitter OAuth PIN");
builder.setView(textEntryView);
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
if (pinText != null)
gotOAuthPin(pinText.getText().toString());
onResume();
}
});
return builder.create();
}
private void gotOAuthPin(String pin) {
SharedPreferences.Editor editor = getSharedPreferences("yahoo",
MODE_PRIVATE).edit();
try {
myProvider.retrieveAccessToken(myConsumer, pin);
accessToken = myConsumer.getToken();
} catch (OAuthMessageSignerException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (OAuthNotAuthorizedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (OAuthExpectationFailedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (OAuthCommunicationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (accessToken != null && accessToken.length() > 0) {
Toast.makeText(this, "Authorized", Toast.LENGTH_SHORT).show();
HttpPost request = new HttpPost(
"http://social.yahooapis.com/v1/user/profile?format=json");
StringEntity body = null;
/*
* try { body = new StringEntity("city=hamburg&label=" +
* URLEncoder.encode("Send via Signpost!", "UTF-8")); } catch
* (UnsupportedEncodingException e1) { // TODO Auto-generated catch
* block e1.printStackTrace(); }
* body.setContentType("application/x-www-form-urlencoded");
* request.setEntity(body);
*/
try {
myConsumer.sign(request);
} catch (OAuthMessageSignerException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (OAuthExpectationFailedException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (OAuthCommunicationException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
System.out.println("Sending update request to Fire Eagle...");
HttpClient httpClient = new DefaultHttpClient();
HttpResponse response = null;
try {
response = httpClient.execute(request);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Toast.makeText(
this,
"Response: " + response.getStatusLine().getStatusCode()
+ " " + response.getStatusLine().getReasonPhrase(),
Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, "Not Authorized", Toast.LENGTH_SHORT).show();
}
}
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case PIN_DIALOG:
LayoutInflater factory = LayoutInflater.from(this);
final View textEntryView = factory.inflate(R.layout.pin, null);
final EditText pinText = (EditText) textEntryView
.findViewById(R.id.pin_text);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("OAuth PIN");
builder.setView(textEntryView);
builder.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int whichButton) {
if (pinText != null)
gotOAuthPin(pinText.getText().toString());
}
});
return builder.create();
}
return super.onCreateDialog(id);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}