微信支付签约用户，微信支付时

class WXPayEntryActivity : AppCompatActivity(), IWXAPIEventHandler {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        val api = WeChatUtil(this).createWXAPI()
        try {
            api.handleIntent(intent, this)
        } catch (e: Exception) {
        }
    }


    override fun onResp(baseResp: BaseResp?) {
        LogUtil.e("pay errCode = " + baseResp?.errCode)
        LogUtil.e("pay errStr = " + baseResp?.errStr)
when (baseResp?.errCode) {
            // TODO 此处始终返回 errCode = -1 检查过APPID, PID 等 没有问题。
BaseResp.ErrCode.ERR_OK -> {
                if (baseResp.type == ConstantsAPI.COMMAND_PAY_BY_WX) {
                    setPayResult(true)
                }
            }
            else -> setPayResult(false)
        }
    }