网络侦听器 Android [英] Network listener Android

问题描述

我想查看 Android 手机的网络何时关闭.我可以捕获那个事件吗?

I want to check when the network of phone in Android goes off. Can I capture that event?

我没有得到正确的 API 或任何可以解释相同情况的示例.如果有人做过或任何示例链接会非常有帮助.

I am not getting the proper API or any example which would explain the same. If anyone had done or any example links would be really helpful.

推荐答案

新的 java 类:

public class ConnectionChangeReceiver extends BroadcastReceiver
{
  @Override
  public void onReceive( Context context, Intent intent )
  {
    ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService( Context.CONNECTIVITY_SERVICE );
    NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();
    NetworkInfo mobNetInfo = connectivityManager.getNetworkInfo(     ConnectivityManager.TYPE_MOBILE );
    if ( activeNetInfo != null )
    {
      Toast.makeText( context, "Active Network Type : " + activeNetInfo.getTypeName(), Toast.LENGTH_SHORT ).show();
    }
    if( mobNetInfo != null )
    {
      Toast.makeText( context, "Mobile Network Type : " + mobNetInfo.getTypeName(), Toast.LENGTH_SHORT ).show();
    }
  }
}

AndroidManifest.xml 中manifest"元素下的新 xml:

New xml in your AndroidManifest.xml under the "manifest" element:

<!-- Needed to check when the network connection changes -->
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

AndroidManifest.xml 中application"元素下的新 xml:

New xml in your AndroidManifest.xml under the "application" element:

<receiver android:name="com.blackboard.androidtest.receiver.ConnectionChangeReceiver"
          android:label="NetworkConnection">
  <intent-filter>
    <action android:name="android.net.conn.CONNECTIVITY_CHANGE"/>
  </intent-filter>
</receiver>

这篇关于网络侦听器 Android的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！