检查清单文件中是否添加了Internet连接权限. 如果不是，请在清单文件中添加代码.

Check the internet connection permission is added in manifest file. If it's not, Add the code in your manifest file.

 <!-- Internet Permissions -->
<uses-permission android:name="android.permission.INTERNET" />

<!-- Network State Permissions -->
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

我希望它将对您有帮助！

i Hope it will helps you!!