Android 監聽wifi廣播的兩種方式

1.XML中聲明

 <receiver android:name=".NetworkConnectChangedReceiver" >
            <intent-filter>
                <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
                <action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
                <action android:name="android.net.wifi.STATE_CHANGE" />
            </intent-filter>
        </receiver>

 

2.代碼中註冊

 IntentFilter filter = new IntentFilter();
 filter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
 filter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);
 filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
 registerReceiver(new NetworkConnectChangedReceiver(), filter);

 

3.實現

查看源碼

打印?

01	package com.example.testss;

02

03	import android.content.BroadcastReceiver;

04	import android.content.Context;

05	import android.content.Intent;

06	import android.net.ConnectivityManager;

07	import android.net.NetworkInfo;

08	import android.net.NetworkInfo.State;

09	import android.net.wifi.WifiManager;

10	import android.os.Parcelable;

11	import android.util.Log;

12

13	public class NetworkConnectChangedReceiver extends BroadcastReceiver {

14

@Override

15	public void onReceive(Context context, Intent intent) {

16	if(WifiManager.WIFI_STATE_CHANGED_ACTION.equals(intent.getAction())) {// 這個監聽wifi的打開與關閉，與wifi的鏈接無關

17	int wifiState = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, 0);

18	Log.e("H3c", "wifiState" + wifiState);

19	switch (wifiState) {

20	case WifiManager.WIFI_STATE_DISABLED:

21

break;

22	case WifiManager.WIFI_STATE_DISABLING:

23

break;

24

//

25

}

26

}

27	// 這個監聽wifi的鏈接狀態便是否連上了一個有效無線路由，當上邊廣播的狀態是WifiManager.WIFI_STATE_DISABLING，和WIFI_STATE_DISABLED的時候，根本不會接到這個廣播。

28	// 在上邊廣播接到廣播是WifiManager.WIFI_STATE_ENABLED狀態的同時也會接到這個廣播，固然剛打開wifi確定尚未鏈接到有效的無線

29	if (WifiManager.NETWORK_STATE_CHANGED_ACTION.equals(intent.getAction())) {

30	Parcelable parcelableExtra = intent

31	.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);

32	if (null != parcelableExtra) {

33	NetworkInfo networkInfo = (NetworkInfo) parcelableExtra;

34	State state = networkInfo.getState();

35	booleanisConnected = state == State.CONNECTED;// 固然，這邊能夠更精確的肯定狀態

36	Log.e("H3c", "isConnected" + isConnected);

37	if (isConnected) {

38

} else {

39

40

}

41

}

42

}

43	// 這個監聽網絡鏈接的設置，包括wifi和移動數據的打開和關閉。.

44	// 最好用的仍是這個監聽。wifi若是打開，關閉，以及鏈接上可用的鏈接都會接到監聽。見log

45	// 這個廣播的最大弊端是比上邊兩個廣播的反應要慢，若是隻是要監聽wifi，我以爲仍是用上邊兩個配合比較合適

46	if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) {

47	<p>   ConnectivityManager manager = (ConnectivityManager) context

48	    .getSystemService(Context.CONNECTIVITY_SERVICE);

49	      NetworkInfo gprs = manager

50	    .getNetworkInfo(ConnectivityManager.TYPE_MOBILE);

51	      NetworkInfo wifi = manager

52	&nbsp;&nbsp;&nbsp;&nbsp;.getNetworkInfo(ConnectivityManager.TYPE_WIFI);</p><p>&nbsp;&nbsp;  Log.i(TAG, "網絡狀態改變:"+ wifi.isConnected() + " 3g:" + gprs.isConnected());</p><p>            NetworkInfo info = intent

53	.getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_INFO);

54	if (info != null) {

55	Log.e("H3c", "info.getTypeName()" + info.getTypeName());

56	Log.e("H3c", "getSubtypeName()" + info.getSubtypeName());

57	Log.e("H3c", "getState()" + info.getState());

58	Log.e("H3c", "getDetailedState()"

59	+ info.getDetailedState().name());

60	Log.e("H3c", "getDetailedState()" + info.getExtraInfo());

61	Log.e("H3c", "getType()" + info.getType());

62

63	if (NetworkInfo.State.CONNECTED == info.getState()) {

64	} else if (info.getType() == 1) {

65	if (NetworkInfo.State.DISCONNECTING == info.getState()) {

66

67

}

68

}

69

}

70

}

71

}

72

}</p>