Android之廣播監控wifi連線狀態
阿新 • • 發佈:2019-02-02
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連線上與否 System.out.println("網路狀態改變"); NetworkInfo info = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO); if(info.getState().equals(NetworkInfo.State.DISCONNECTED)){ System.out.println("wifi網路連線斷開"); } else if(info.getState().equals(NetworkInfo.State.CONNECTED)){ WifiManager wifiManager = (WifiManager)context.getSystemService(Context.WIFI_SERVICE); WifiInfo wifiInfo = wifiManager.getConnectionInfo(); //獲取當前wifi名稱 System.out.println("連線到網路 " + wifiInfo.getSSID()); } } else if(intent.getAction().equals(WifiManager.WIFI_STATE_CHANGED_ACTION)){//wifi開啟與否 int wifistate = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, WifiManager.WIFI_STATE_DISABLED); if(wifistate == WifiManager.WIFI_STATE_DISABLED){ System.out.println("系統關閉wifi"); } else if(wifistate == WifiManager.WIFI_STATE_ENABLED){ System.out.println("系統開啟wifi"); } } } }
許可權
<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>