一、代码流程
1.MainActivity会开启PrepareRequestTokenActivity
2.PrepareRequestTokenActivity会根据配置文件的CONSUMER_KEY、CONSUMER_SECRET生成consumer
根据REQUEST_URL、ACCESS_URL、AUTHORIZE_URL生成provider，然后开启OAuthRequestTokenTask，执行异步操作，访问腾讯网络
3.在OAuthRequestTokenTask的doInBackground()中，provider.retrieveRequestToken()会指定回调地址，这里是指定“x-oauthflow://callback”
而在manifext.xml中，为PrepareRequestTokenActivity设置了<data android:scheme="x-oauthflow" android:host="callback"/>，所以一当OAuthRequestTokenTask成功返回后回调PrepareRequestTokenActivity，而PrepareRequestTokenActivity又设置了android:launchMode="singleTask"，所以回调是是调用PrepareRequestTokenActivity的onNewIntent()，而不是onCreate()。
二、代码
1.xml
(1)activity_main.xml
1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 android:orientation="vertical" 4 android:layout_width="fill_parent" 5 android:layout_height="fill_parent" 6 > 7 <Button android:id="@+id/btn_launch_oauth" 8 android:layout_width="wrap_content" 9 android:layout_height="wrap_content" 10 android:text="Launch OAuth Flow" 11 android:onClick="startPrepareRequestTokenActivity"/> 12 13 <TextView android:id="@+id/response_code" 14 android:layout_width="wrap_content" 15 android:layout_height="wrap_content" 16 android:text="" 17 android:textColor="#FFFFFF" 18 android:typeface="normal"/> 19 </LinearLayout>
(2)AndroidManifest.xml
1 <activity android:name=".PrepareRequestTokenActivity" android:launchMode="singleTask"> 2 <intent-filter> 3 <action android:name="android.intent.action.VIEW"/> 4 <category android:name="android.intent.category.DEFAULT"/> 5 <category android:name="android.intent.category.BROWSABLE"/> 6 <data android:scheme="x-oauthflow" android:host="callback"/> 7 </intent-filter> 8 </activity> 9 </application> 10 <uses-permission android:name="android.permission.INTERNET"/> 11 <uses-permission android:name="android.permission.READ_CONTACTS" />
2.java
(1)MainActivity.java
1 package org.oauth; 2 3 import org.oauth.R; 4 5 import android.app.Activity; 6 import android.content.Intent; 7 import android.os.Bundle; 8 import android.view.View; 9 10 public class MainActivity extends Activity { 11 12 @Override 13 protected void onCreate(Bundle savedInstanceState) { 14 super.onCreate(savedInstanceState); 15 setContentView(R.layout.activity_main); 16 } 17 18 public void startPrepareRequestTokenActivity(View view) { 19 startActivity(new Intent().setClass(view.getContext(), PrepareRequestTokenActivity.class)); 20 } 21 }
(2)PrepareRequestTokenActivity.java
1 package org.oauth; 2 3 import oauth.signpost.OAuthConsumer; 4 import oauth.signpost.OAuthProvider; 5 import oauth.signpost.commonshttp.CommonsHttpOAuthConsumer; 6 import oauth.signpost.commonshttp.CommonsHttpOAuthProvider; 7 import android.app.Activity; 8 import android.content.Intent; 9 import android.content.SharedPreferences; 10 import android.net.Uri; 11 import android.os.Bundle; 12 import android.preference.PreferenceManager; 13 14 public class PrepareRequestTokenActivity extends Activity { 15 16 private OAuthConsumer consumer; 17 private OAuthProvider provider; 18 19 @Override 20 protected void onCreate(Bundle savedInstanceState) { 21 super.onCreate(savedInstanceState); 22 23 consumer = new CommonsHttpOAuthConsumer(Constants.CONSUMER_KEY, Constants.CONSUMER_SECRET); 24 provider = new CommonsHttpOAuthProvider(Constants.REQUEST_URL, Constants.ACCESS_URL, Constants.AUTHORIZE_URL); 25 new OAuthRequestTokenTask(this, consumer, provider).execute(); 26 } 27 28 //由于设置了<activity android:name=".PrepareRequestTokenActivity" android:launchMode="singleTask"> 29 //所以回调会调用此方法，而不要调用 onCreate() 30 @Override 31 public void onNewIntent(Intent intent) { 32 super.onNewIntent(intent); 33 //最后获取的access_token,access_token_secet都存在prefs 34 SharedPreferences prefs = PreferenceManager 35 .getDefaultSharedPreferences(this); 36 final Uri uri = intent.getData(); 37 System.out.println(uri.toString()); 38 if (uri != null 39 && uri.getScheme().equals(Constants.OAUTH_CALLBACK_SCHEME)) { 40 new RetrieveAccessTokenTask(this, consumer, provider, prefs) 41 .execute(uri); 42 finish(); 43 } 44 } 45 }
(3)OAuthRequestTokenTask.java
1 package org.oauth; 2 3 4 import oauth.signpost.OAuthConsumer; 5 import oauth.signpost.OAuthProvider; 6 import oauth.signpost.exception.OAuthCommunicationException; 7 import oauth.signpost.exception.OAuthExpectationFailedException; 8 import oauth.signpost.exception.OAuthMessageSignerException; 9 import oauth.signpost.exception.OAuthNotAuthorizedException; 10 import android.content.Context; 11 import android.content.Intent; 12 import android.net.Uri; 13 import android.os.AsyncTask; 14 15 public class OAuthRequestTokenTask extends AsyncTask<Void, Void, Void> { 16 17 private Context context; 18 private OAuthConsumer consumer; 19 private OAuthProvider provider; 20 21 public OAuthRequestTokenTask(Context context, OAuthConsumer consumer, 22 OAuthProvider provider) { 23 super(); 24 this.context = context; 25 this.consumer = consumer; 26 this.provider = provider; 27 } 28 29 @Override 30 protected Void doInBackground(Void... params) { 31 try { 32 System.out.println("请求Request Token之前" + consumer.getToken()); 33 //retrieveRequestToken的第二个参数是回调URL 34 final String url = provider.retrieveRequestToken(consumer, Constants.OAUTH_CALLBACK_URL); 35 System.out.println("请求Request Token之后" + consumer.getToken()); 36 System.out.println("url---->" + url); 37 Uri uri = Uri.parse(url); 38 //隐式的启动Activity 39 //tel://21983129863 40 //sms://767868698769 41 //https://.......会启动浏览器 42 Intent intent = new Intent(Intent.ACTION_VIEW, uri).setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP 43 | Intent.FLAG_ACTIVITY_NO_HISTORY | Intent.FLAG_FROM_BACKGROUND); 44 context.startActivity(intent); 45 } catch (Exception e) { 46 // TODO Auto-generated catch block 47 e.printStackTrace(); 48 } 49 return null; 50 } 51 52 }
(4)RetrieveAccessTokenTask.java
1 package org.oauth; 2 3 import oauth.signpost.OAuth; 4 import oauth.signpost.OAuthConsumer; 5 import oauth.signpost.OAuthProvider; 6 import android.content.Context; 7 import android.content.Intent; 8 import android.content.SharedPreferences; 9 import android.content.SharedPreferences.Editor; 10 import android.net.Uri; 11 import android.os.AsyncTask; 12 import android.util.Log; 13 14 public class RetrieveAccessTokenTask extends AsyncTask<Uri, Void, Void> { 15 16 final String TAG = "OAuth"; 17 18 private Context context; 19 private OAuthProvider provider; 20 private OAuthConsumer consumer; 21 private SharedPreferences prefs; 22 23 public RetrieveAccessTokenTask(Context context, OAuthConsumer consumer,OAuthProvider provider, SharedPreferences prefs) { 24 this.context = context; 25 this.consumer = consumer; 26 this.provider = provider; 27 this.prefs=prefs; 28 } 29 30 31 @Override 32 protected Void doInBackground(Uri...params) { 33 final Uri uri = params[0]; 34 35 final String oauth_verifier = uri.getQueryParameter(OAuth.OAUTH_VERIFIER); 36 37 try { 38 provider.retrieveAccessToken(consumer, oauth_verifier);//会访问ACCESS_URL 39 40 final Editor edit = prefs.edit(); 41 edit.putString(OAuth.OAUTH_TOKEN, consumer.getToken()); 42 edit.putString(OAuth.OAUTH_TOKEN_SECRET, consumer.getTokenSecret()); 43 edit.commit(); 44 45 String token = prefs.getString(OAuth.OAUTH_TOKEN, ""); 46 String secret = prefs.getString(OAuth.OAUTH_TOKEN_SECRET, ""); 47 48 consumer.setTokenWithSecret(token, secret); 49 context.startActivity(new Intent(context,MainActivity.class)); 50 51 Log.i(TAG, "OAuth - Access Token Retrieved"); 52 53 } catch (Exception e) { 54 Log.e(TAG, "OAuth - Access Token Retrieval Error", e); 55 } 56 57 return null; 58 } 59 }
(5)Constants.java
1 package org.oauth; 2 3 public class Constants { 4 5 //腾讯所分配的APP_KEY 6 public static final String CONSUMER_KEY = "99e9494ff07e42489f4ace16b63e1f47"; 7 //腾讯所分配的APP_SECRET 8 public static final String CONSUMER_SECRET = "154f6f9ab4c1cf527f8ad8ab1f8e1ec9"; 9 //用于获取未授权的request token 10 public static final String REQUEST_URL = "https://open.t.qq.com/cgi-bin/request_token"; 11 //用于获取access token 12 public static final String ACCESS_URL = "https://open.t.qq.com/cgi-bin/access_token"; 13 //用于对未授权的request token进行授权 14 public static final String AUTHORIZE_URL = "https://open.t.qq.com/cgi-bin/authorize"; 15 16 public static final String ENCODING = "UTF-8"; 17 18 //Manifest设置PrepareRequestTokenActivity时也有设置此项 19 public static final String OAUTH_CALLBACK_SCHEME = "x-oauthflow"; 20 public static final String OAUTH_CALLBACK_HOST = "callback"; 21 //回调地址 22 public static final String OAUTH_CALLBACK_URL = OAUTH_CALLBACK_SCHEME + "://" + OAUTH_CALLBACK_HOST; 23 24 }