android webview实现引起qq临时会话

android webview实现唤起qq临时会话
安卓部分代码

class MyWebviewclient extends WebViewClient {
					@Override
					public void onPageStarted(WebView view, String url, android.graphics.Bitmap favicon) {
						if (url.startsWith("mqqwpa")) {
							view.stopLoading();
							Intent in = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
							startActivity(in);
						}else{
							super.onPageStarted(view, url, favicon);
						}
					}
					
					
				} 
				WebViewClient mWebViewClient = new MyWebviewclient();
				webView.setWebViewClient(mWebViewClient);

页面html代码

location.href="mqqwpa://im/chat?chat_type=wpa&uin=954502368";