Android之广播监控wifi连接状态

来源：互联网发布：中国年鉴数据库编辑：程序博客网时间：2024/04/30 05:33

package com.example.floatdialogtest;    import android.content.BroadcastReceiver;  import android.content.Context;  import android.content.Intent;  import android.net.NetworkInfo;  import android.net.wifi.WifiInfo;  import android.net.wifi.WifiManager;    public class WifiReceiver extends BroadcastReceiver{      @Override      public void onReceive(Context context, Intent intent) {          // TODO Auto-generated method stub          if(intent.getAction().equals(WifiManager.RSSI_CHANGED_ACTION)){              //signal strength changed          }          else if(intent.getAction().equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)){//wifi连接上与否              System.out.println("网络状态改变");              NetworkInfo info = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);              if(info.getState().equals(NetworkInfo.State.DISCONNECTED)){                  System.out.println("wifi网络连接断开");              }              else if(info.getState().equals(NetworkInfo.State.CONNECTED)){                                    WifiManager wifiManager = (WifiManager)context.getSystemService(Context.WIFI_SERVICE);                  WifiInfo wifiInfo = wifiManager.getConnectionInfo();                                                    //获取当前wifi名称                  System.out.println("连接到网络 " + wifiInfo.getSSID());                                }                        }          else if(intent.getAction().equals(WifiManager.WIFI_STATE_CHANGED_ACTION)){//wifi打开与否              int wifistate = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, WifiManager.WIFI_STATE_DISABLED);                            if(wifistate == WifiManager.WIFI_STATE_DISABLED){                  System.out.println("系统关闭wifi");              }              else if(wifistate == WifiManager.WIFI_STATE_ENABLED){                  System.out.println("系统开启wifi");              }          }      }  }

权限
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

receiver intetfilter

<intent-filter >
<action android:name="android.net.wifi.RSSI_CHANGED"/>
<action android:name="android.net.wifi.STATE_CHANGE"/>
<action android:name="android.net.wifi.WIFI_STATE_CHANGED"/>
</intent-filter>

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