dependencies {
    ...
    implementation (name:'coolsdk-release',ext:'aar')
    ...
}

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

import com.ipgou.coolsdk.CoolResult;
import com.ipgou.coolsdk.Coolpay;

 Coolpay pay =  Coolpay.getInstance(activity);
 Coolpay.Config....
 // 监听支付结果
 pay.setResultListener(new Coolpay.ResultListener() {
     ...});
  // 支付
  Map<String, String> payInfo = new HashMap<String, String>();
  payInfo.put("amount","20000");
  ...
  pay.payV1(payInfo)
  ....
 }

具体详见CoolTest