即使存在來自LinkedIn .Setting向上LinkedIn授權使用OAuth 1.0沒有這樣的機器人特定SDK（如Facebook和的Android Twitter的SDK）仍然容易使用：的Oauth 2.0授權LinkedIn Android中
但它與Oauth2.0的授權不是一回事。沒有太多有用的庫或android特定的例子。我試着用這些：
我讀過Oauth 2.0比1.0更容易實現。我仍然無法這樣做。
任何在Android中爲LinkedIn實現Oauth2.0的指針？
MainActivity：
public class MainActivity extends Activity {
/*CONSTANT FOR THE AUTHORIZATION PROCESS*/
/****FILL THIS WITH YOUR INFORMATION*********/
//This is the public api key of our application
private static final String API_KEY = "YOUR_API_KEY";
//This is the private api key of our application
private static final String SECRET_KEY = "YOUR_API_SECRET";
//This is any string we want to use. This will be used for avoiding CSRF attacks. You can generate one here: http://strongpasswordgenerator.com/
private static final String STATE = "E3ZYKC1T6H2yP4z";
//This is the url that LinkedIn Auth process will redirect to. We can put whatever we want that starts with http:// or https:// .
//We use a made up url that we will intercept when redirecting. Avoid Uppercases.
private static final String REDIRECT_URI = "http://com.amalbit.redirecturl";
/*********************************************/
//These are constants used for build the urls
private static final String AUTHORIZATION_URL = "https://www.linkedin.com/uas/oauth2/authorization";
private static final String ACCESS_TOKEN_URL = "https://www.linkedin.com/uas/oauth2/accessToken";
private static final String SECRET_KEY_PARAM = "client_secret";
private static final String RESPONSE_TYPE_PARAM = "response_type";
private static final String GRANT_TYPE_PARAM = "grant_type";
private static final String GRANT_TYPE = "authorization_code";
private static final String RESPONSE_TYPE_VALUE ="code";
private static final String CLIENT_ID_PARAM = "client_id";
private static final String STATE_PARAM = "state";
private static final String REDIRECT_URI_PARAM = "redirect_uri";
/*---------------------------------------*/
private static final String QUESTION_MARK = "?";
private static final String AMPERSAND = "&";
private static final String EQUALS = "=";
private WebView webView;
private ProgressDialog pd;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//get the webView from the layout
webView = (WebView) findViewById(R.id.main_activity_web_view);
//Request focus for the webview
webView.requestFocus(View.FOCUS_DOWN);
//Show a progress dialog to the user
pd = ProgressDialog.show(this, "", this.getString(R.string.loading),true);
//Set a custom web view client
webView.setWebViewClient(new WebViewClient(){
@Override
public void onPageFinished(WebView view, String url) {
//This method will be executed each time a page finished loading.
//The only we do is dismiss the progressDialog, in case we are showing any.
if(pd!=null && pd.isShowing()){
pd.dismiss();
}
}
@Override
public boolean shouldOverrideUrlLoading(WebView view, String authorizationUrl) {
//This method will be called when the Auth proccess redirect to our RedirectUri.
//We will check the url looking for our RedirectUri.
if(authorizationUrl.startsWith(REDIRECT_URI)){
Log.i("Authorize", "");
Uri uri = Uri.parse(authorizationUrl);
//We take from the url the authorizationToken and the state token. We have to check that the state token returned by the Service is the same we sent.
//If not, that means the request may be a result of CSRF and must be rejected.
String stateToken = uri.getQueryParameter(STATE_PARAM);
if(stateToken==null || !stateToken.equals(STATE)){
Log.e("Authorize", "State token doesn't match");
return true;
}
//If the user doesn't allow authorization to our application, the authorizationToken Will be null.
String authorizationToken = uri.getQueryParameter(RESPONSE_TYPE_VALUE);
if(authorizationToken==null){
Log.i("Authorize", "The user doesn't allow authorization.");
return true;
}
Log.i("Authorize", "Auth token received: "+authorizationToken);
//Generate URL for requesting Access Token
String accessTokenUrl = getAccessTokenUrl(authorizationToken);
//We make the request in a AsyncTask
new PostRequestAsyncTask().execute(accessTokenUrl);
}else{
//Default behaviour
Log.i("Authorize","Redirecting to: "+authorizationUrl);
webView.loadUrl(authorizationUrl);
}
return true;
}
});
//Get the authorization Url
String authUrl = getAuthorizationUrl();
Log.i("Authorize","Loading Auth Url: "+authUrl);
//Load the authorization URL into the webView
webView.loadUrl(authUrl);
}
/**
* Method that generates the url for get the access token from the Service
* @return Url
*/
private static String getAccessTokenUrl(String authorizationToken){
return ACCESS_TOKEN_URL
+QUESTION_MARK
+GRANT_TYPE_PARAM+EQUALS+GRANT_TYPE
+AMPERSAND
+RESPONSE_TYPE_VALUE+EQUALS+authorizationToken
+AMPERSAND
+CLIENT_ID_PARAM+EQUALS+API_KEY
+AMPERSAND
+REDIRECT_URI_PARAM+EQUALS+REDIRECT_URI
+AMPERSAND
+SECRET_KEY_PARAM+EQUALS+SECRET_KEY;
}
/**
* Method that generates the url for get the authorization token from the Service
* @return Url
*/
private static String getAuthorizationUrl(){
return AUTHORIZATION_URL
+QUESTION_MARK+RESPONSE_TYPE_PARAM+EQUALS+RESPONSE_TYPE_VALUE
+AMPERSAND+CLIENT_ID_PARAM+EQUALS+API_KEY
+AMPERSAND+STATE_PARAM+EQUALS+STATE
+AMPERSAND+REDIRECT_URI_PARAM+EQUALS+REDIRECT_URI;
}
@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;
}
private class PostRequestAsyncTask extends AsyncTask<String, Void, Boolean>{
@Override
protected void onPreExecute(){
pd = ProgressDialog.show(MainActivity.this, "", MainActivity.this.getString(R.string.loading),true);
}
@Override
protected Boolean doInBackground(String... urls) {
if(urls.length>0){
String url = urls[0];
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpost = new HttpPost(url);
try{
HttpResponse response = httpClient.execute(httpost);
if(response!=null){
//If status is OK 200
if(response.getStatusLine().getStatusCode()==200){
String result = EntityUtils.toString(response.getEntity());
//Convert the string result to a JSON Object
JSONObject resultJson = new JSONObject(result);
//Extract data from JSON Response
int expiresIn = resultJson.has("expires_in") ? resultJson.getInt("expires_in") : 0;
String accessToken = resultJson.has("access_token") ? resultJson.getString("access_token") : null;
Log.e("Tokenm", ""+accessToken);
if(expiresIn>0 && accessToken!=null){
Log.i("Authorize", "This is the access Token: "+accessToken+". It will expires in "+expiresIn+" secs");
//Calculate date of expiration
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.SECOND, expiresIn);
long expireDate = calendar.getTimeInMillis();
////Store both expires in and access token in shared preferences
SharedPreferences preferences = MainActivity.this.getSharedPreferences("user_info", 0);
SharedPreferences.Editor editor = preferences.edit();
editor.putLong("expires", expireDate);
editor.putString("accessToken", accessToken);
editor.commit();
return true;
}
}
}
}catch(IOException e){
Log.e("Authorize","Error Http response "+e.getLocalizedMessage());
}
catch (ParseException e) {
Log.e("Authorize","Error Parsing Http response "+e.getLocalizedMessage());
} catch (JSONException e) {
Log.e("Authorize","Error Parsing Http response "+e.getLocalizedMessage());
}
}
return false;
}
@Override
protected void onPostExecute(Boolean status){
if(pd!=null && pd.isShowing()){
pd.dismiss();
}
if(status){
//If everything went Ok, change to another activity.
Intent startProfileActivity = new Intent(MainActivity.this, ProfileActivity.class);
MainActivity.this.startActivity(startProfileActivity);
}
}
};
}
而xmlLayout：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<WebView
android:id="@+id/main_activity_web_view"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
令牌保存在sharedpreference文件。
簡單的android項目回購here in github。
我得到了它的工作，但它花了我一些時間。我跟着LinkedIn Authentication來管理。
我仍然強烈建議，仍讀這個環節，因爲我不包括在我的例子所有的情況下（錯誤，錯誤處理，最好pratices，參數的使用，精確的文檔......）
首先，你需要有你的LinkedIn API密鑰和密鑰。如果沒有，請在here.上註冊一個應用程序
其次，您需要一個可以接收授權碼的應用程序中的活動。爲此，它需要在AndroidManifest.xml文件中設置爲可瀏覽（可發射從瀏覽器）：雖然不建議
<activity
android:name=".ResultActivity"
android:label="" >
<intent-filter>
<action android:name="android.intent.action.VIEW"/>
<category android:name="android.intent.category.DEFAULT"/>
<category android:name="android.intent.category.BROWSABLE"/>
</intent-filter>
，它可以使用數據標籤使用自定義方案來檢索的URI：
<data android:scheme="oauth"/>
之後，您需要將用戶重定向到LinkedIn的授權對話框，使用特定的URL：
https://www.linkedin.com/uas/oauth2/authorization?response_type=code
&client_id=YOUR_API_KEY
&scope=SCOPE
&state=STATE
&redirect_uri=YOUR_REDIRECT_URI
您可以使用Web查看直接顯示在你的應用程序，或者讓系統通過它像一個意圖：
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(/* FULL URL */));
startActivity(intent);
這裏唯一的問題是，API不接受其他方案比HTTP或HTTPS，這意味着你不能只需將意圖URI作爲redirect_uri參數傳遞即可。
所以我在我的服務器上創建了一個登陸頁面，唯一的目的是重定向到應用程序。我們可以想象，像（醜陋的縮短PHP）(Intent ref.)：
header('Location: ' . "intent:#Intent;component=your.package/.ResultActivity;S.code=" . $_GET['code'] . ";S.state=" . $_GET['state'] . ";end");
die();
所以，一切的一套！現在ResultActivity的onCreate(Bundle)：
Intent intent = getIntent();
String authorizationCode = intent.getStringExtra("code");
還有另一種方式在這裏傳遞參數，如果該數據標籤較早使用。
幾乎在那裏！現在，你只需要在該網址上執行一個簡單的POST請求：
https://www.linkedin.com/uas/oauth2/accessToken?grant_type=authorization_code
&code=AUTHORIZATION_CODE
&redirect_uri=YOUR_REDIRECT_URI
&client_id=YOUR_API_KEY
&client_secret=YOUR_SECRET_KEY
在成功時返回一個JSON對象：
{"expires_in":5184000,"access_token":"AQXdSP_W41_UPs5ioT_t8HESyODB4FqbkJ8LrV_5mff4gPODzOYR"}
的Et瞧！您現在可以使用access_token進行API調用。不要忘記store it某處，所以你沒有再次通過這些步驟。
我希望這篇文章不會太長，並且可以幫助一些人。 :)
是否有可能沒有在PHP的登陸頁面呢？ – amalBit
@amalBit有一些方法可以解決這個問題，但這是修改Oauth2 nature imho。至於解決方案，您可以使用WebView和'@Override shouldOverrideUrlLoading'，如@ huy.nguyen的示例所示，甚至使用'http：// localhost'作爲redirect_uri並監聽正在進行的連接。 – Bhullnatik
你能舉一個例子嗎？我無法解決它.. – amalBit
OAuth 2.0比1.0簡單很多，可以在沒有任何外部庫的幫助下完成。但是，如果你已經在使用scribe-java，它會更容易。
執行很簡單。您需要創建一個WebView，它具有自定義WebViewClient，它捕獲並覆蓋回調URL的加載行爲。因此，當WebView嘗試加載該URL時，您可以攔截該進程並提取驗證者。驗證者可以傳遞給scribe-java來交換訪問令牌。
要開始整個過程，只需告知WebView加載授權URL。
我有託管示例代碼here。該應用程序使用Buffer的API進行身份驗證，但大部分代碼都可以重用。您可能對fragment感興趣，該主機託管我的自定義WebView和獲取訪問令牌的背景job。
隨意問我任何後續問題。
嘿，我檢查了你的代碼，但無法理解oauth機制。你能更好地解釋代碼中驗證者的提取嗎？ – amalBit
你的意思是[line]（https://github.com/nguyenhuy/buffer/blob/master/buffer/src/main/java/org/nguyenhuy/buffer/fragment/OAuthFragment.java#L98）？ 回調看起來像這樣：'callback_url？code =「verifier」'（即：http://nguyenhuy.me/callback?code="verifier「）。爲了提取驗證者，你只需要調用'Uri.getQueryParameter（String）'來獲得「代碼」的值。 –
一個可行的例子會很棒。 – amalBit
@Override
public boolean shouldOverrideUrlLoading(WebView view, String authorizationUrl) {
//This method will be called when the Auth proccess redirect to our RedirectUri.
//We will check the url looking for our RedirectUri.
if(authorizationUrl.startsWith(REDIRECT_URI)){
Log.i("Authorize", "");
Uri uri = Uri.parse(authorizationUrl);
//We take from the url the authorizationToken and the state token. We have to check that the state token returned by the Service is the same we sent.
//If not, that means the request may be a result of CSRF and must be rejected.
String stateToken = uri.getQueryParameter(STATE_PARAM);
if(stateToken==null || !stateToken.equals(STATE)){
Log.e("Authorize", "State token doesn't match");
return true;
}
//If the user doesn't allow authorization to our application, the authorizationToken Will be null.
String authorizationToken = uri.getQueryParameter(RESPONSE_TYPE_VALUE);
if(authorizationToken==null){
Log.i("Authorize", "The user doesn't allow authorization.");
return true;
}
Log.i("Authorize", "Auth token received: "+authorizationToken);
//Generate URL for requesting Access Token
String accessTokenUrl = getAccessTokenUrl(authorizationToken);
//We make the request in a AsyncTask
new PostRequestAsyncTask().execute(accessTokenUrl);
}else{
//Default behaviour
Log.i("Authorize","Redirecting to: "+authorizationUrl);
webView.loadUrl(authorizationUrl);
}
return true;
}
而在你的AsyncTask：
私有類PostRequestAsyncTask擴展的AsyncTask {
@Override
protected void onPreExecute(){
pd = ProgressDialog.show(MainActivity.this, "", MainActivity.this.getString(R.string.loading),true);
}
@Override
protected Boolean doInBackground(String... urls) {
if(urls.length>0){
String url = urls[0];
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpost = new HttpPost(url);
try{
HttpResponse response = httpClient.execute(httpost);
if(response!=null){
//If status is OK 200
if(response.getStatusLine().getStatusCode()==200){
String result = EntityUtils.toString(response.getEntity());
//Convert the string result to a JSON Object
JSONObject resultJson = new JSONObject(result);
//Extract data from JSON Response
int expiresIn = resultJson.has("expires_in") ? resultJson.getInt("expires_in") : 0;
String accessToken = resultJson.has("access_token") ? resultJson.getString("access_token") : null;
Log.e("Tokenm", ""+accessToken);
if(expiresIn>0 && accessToken!=null){
Log.i("Authorize", "This is the access Token: "+accessToken+". It will expires in "+expiresIn+" secs");
//Calculate date of expiration
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.SECOND, expiresIn);
long expireDate = calendar.getTimeInMillis();
////Store both expires in and access token in shared preferences
SharedPreferences preferences = MainActivity.this.getSharedPreferences("user_info", 0);
SharedPreferences.Editor editor = preferences.edit();
editor.putLong("expires", expireDate);
editor.putString("accessToken", accessToken);
editor.commit();
return true;
}
}
}
}catch(IOException e){
Log.e("Authorize","Error Http response "+e.getLocalizedMessage());
}
catch (ParseException e) {
Log.e("Authorize","Error Parsing Http response "+e.getLocalizedMessage());
} catch (JSONException e) {
Log.e("Authorize","Error Parsing Http response "+e.getLocalizedMessage());
}
}
return false;
}
@Override
protected void onPostExecute(Boolean status){
if(pd!=null && pd.isShowing()){
pd.dismiss();
}
if(status){
//If everything went Ok, change to another activity.
Intent startProfileActivity = new Intent(MainActivity.this, ProfileActivity.class);
MainActivity.this.startActivity(startProfileActivity);
}
}
};
重定向網址是否必須相同。我可以指出其他一些網址嗎？ – Akshat
我有一個奇怪的問題，彈出後顯示android鍵盤出現，但單擊字母時不起作用。跆拳道？我不能輸入登錄信息。 –
只是想提一提，您不能再使用隨機redirect_uri：您必須使用您在填寫的「添加應用程序」表單中指定的那個。 – ujvl