Android集成支付宝支付功能示例

        final String payInfo = orderInfo + "&sign=\"" + sign + "\"&" + getSignType();    Runnable payRunnable = new Runnable() {      @Override      public void run() {        // 构造PayTask 对象        PayTask alipay = new PayTask(PayDemoActivity.this);        // 调用支付接口，获取支付结果        String result = alipay.pay(payInfo, true);        Message msg = new Message();        msg.what = SDK_PAY_FLAG;        msg.obj = result;        mHandler.sendMessage(msg);      }    };    // 必须异步调用    Thread payThread = new Thread(payRunnable);    payThread.start();