Android实现授权访问网页的方法

import android.annotation.SuppressLint;import android.app.Activity;import android.content.Intent;import android.graphics.Bitmap;import android.net.http.SslError;import android.os.Bundle;import android.util.Log;import android.webkit.SslErrorHandler;import android.webkit.WebSettings;import android.webkit.WebView;import android.webkit.WebViewClient;import com.tencent.weibo.oauthv2.OAuthV2;import com.tencent.weibo.oauthv2.OAuthV2Client;/** * 使用Webview显示OAuth Version 2.a ImplicitGrant方式授权的页 * (移动终端不建议使用Authorize code grant方式授权 * 本类使用方法 * 调用本类的地方请添加如下代码 * //请将OAuthV2Activity改为类的类名 * Intent intent = new Intent(OAuthV2Activity.this, OAuthV2AuthorizeWebView.class); * intent.putExtra("oauth", oAuth); //oAuth为OAuthV2类的实例，存放授权相关信?? * startActivityForResult(intent, myRrequestCode); //请设置合适的requsetCode * 重写接收回调信息的方 * if (requestCode==myRrequestCode) { //对应之前设置的的myRequsetCode *   if (resultCode==OAuthV2AuthorizeWebView.RESULT_CODE) { *     //取得返回的OAuthV2类实例oAuth *     oAuth=(OAuthV2) data.getExtras().getSerializable("oauth"); *   } * } * @see android.app.Activity#onActivityResult(int requestCode, int resultCode, Intent data) */public class MyWebView extends Activity {  public final static int RESULT_CODE = 2;  private OAuthV2 oAuth;  private final String TAG = "MyWebView"; private WebView mWebView;  @SuppressLint("NewApi") @Override  public void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.webview_qq);    mWebView = (WebView) findViewById(R.id.qq_mywebview);;    mWebView.setVerticalScrollBarEnabled(false); mWebView.setHorizontalScrollBarEnabled(false); Intent intent = this.getIntent();    oAuth = (OAuthV2) intent.getExtras().getSerializable("oauth");    String urlStr = OAuthV2Client.generateImplicitGrantUrl(oAuth);    WebSettings webSettings = mWebView.getSettings();    webSettings.setJavaScriptEnabled(true);    webSettings.setSupportZoom(true);    mWebView.requestFocus();    mWebView.loadUrl(urlStr);    System.out.println(urlStr.toString());    Log.i(TAG, "WebView Starting....");    WebViewClient client = new WebViewClient() {    /* 回调方法，当页面加载时执行*/      @Override      public void onPageStarted(WebView view, String url, Bitmap favicon) {        Log.i(TAG, "WebView onPageStarted...");        Log.i(TAG, "URL = " + url);        if (url.indexOf("access_token=") != -1) {          int start=url.indexOf("access_token=");          String responseData=url.substring(start);          OAuthV2Client.parseAccessTokenAndOpenId(responseData, oAuth);          Intent intent = new Intent();          intent.putExtra("oauth", oAuth);          setResult(RESULT_CODE, intent);          finish();        }        super.onPageStarted(view, url, favicon);        Log.i(TAG, "999999999");      }      /* TODO Android2.2及以上版本才能使用该方法，目前https://open.t.qq.com中存在http资源会引起sslerror，待网站修正后可去掉该方*/ public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {        if ((null != view.getUrl()) && (view.getUrl().startsWith("https://open.t.qq.com"))) {          handler.proceed();// 接受证书        } else {          handler.cancel(); // 默认的处理方式，WebView变成空白        }        // handleMessage(Message msg); 其他处理      }    };    mWebView.setWebViewClient(client);  }}