新浪微博webView方式受权获取不到accessToken

作了几个新浪分享的项目，昨天遇到了获取不到accessToken，而是受权成功只返回个code,这让我比较纠结，看了新浪官方说须要用code值算accessToken,又看了官方的demo，里面写个暂时不提供code算法，让我很郁闷，又搜了下新浪提供了接口能够经过code取accessToken，先把代码粘上：（多余的就不粘了，只贴关键部分）

/** 新浪微博受权成功回调方法 */

class AuthDialogListener implements WeiboAuthListener {

@Override
	public void onComplete(Bundle values) {
		final String code = values.getString("code");
		token = values.getString("access_token");
		expires_in = values.getString("expires_in");
		if(TommyTools.isNull(token)){
			accessToken = new Oauth2AccessToken(token, expires_in);
			if (accessToken.isSessionValid()) {
				AccessTokenKeeper.keepAccessToken(activity, accessToken);
				Toast.makeText(activity, "认证成功", Toast.LENGTH_SHORT).show();
								}
		}else if (code != null) {//下面是经过code取accessToken
			new Thread(){

				@Override
				public void run() {
					String result = "";  
					WeiboParameters params = new WeiboParameters();
					params.add("client_id", Constant.APP_KEY);
					params.add("client_secret", "1f39c10940fa0d3b1001e439c4a99ccb");
					params.add("grant_type", "authorization_code");
					params.add("redirect_uri", Constant.REDIRECT_URL);
					params.add("code", code);
					try {
						result = HttpManager.openUrl("https://api.weibo.com/oauth2/access_token", "POST",
								params, null);
					} catch (WeiboException e) {
						e.printStackTrace();
					}
					JSONObject json;
					try {
						json = new JSONObject(result);
						token = json.getString("access_token");
						expires_in = json.getString("expires_in");
						handler.sendEmptyMessage(1);
					} catch (JSONException e) {
						e.printStackTrace();
					}
				}
				
			}.start();
		}else{
			return;
		}
	}

	@Override
	public void onError(WeiboDialogError e) {
		Toast.makeText(activity, "Auth error : " + e.getMessage(), Toast.LENGTH_LONG).show();
	}

	@Override
	public void onCancel() {
		Toast.makeText(activity, "Auth cancel", Toast.LENGTH_LONG).show();
	}

	@Override
	public void onWeiboException(WeiboException arg0) {
		
	}

}

Handler handler = new Handler(){

@Override
	public void handleMessage(Message msg) {
		if(msg.what == 1){
			if(TommyTools.isNull(token) && TommyTools.isNull(expires_in)){
				accessToken = new Oauth2AccessToken(token, expires_in);
				if (accessToken.isSessionValid()) {
					AccessTokenKeeper.keepAccessToken(activity, accessToken);
					Toast.makeText(activity, "认证成功", Toast.LENGTH_SHORT).show();
				}
			}
		}
	}
	
};

能够看到，我在受权成功回调那里作了个判断，先判断token为不为空，直接说缘由，是由于在申请appKey时android须要填写包名和应用签名，若是打的包用的签名和填写在上面的一致，受权成功会直接返回token，不须要在调接口获取，若是签名不一致，受权就只返回一个code码，而后经过code码再获取token。