Internet link status for Android

Android phone changes to the state of the system, such as: the receipt of the letter, telephone reception, battery power is too low, the network status changes will send a broadcast. With the broadcast mechanism, we only need to create a broadcast recipient to deal with this broadcast, we can achieve in different states to make different operations,

This article mainly records the network status change monitoring. First define a class to inherit networkchangereceiver, and rewrite OnReceive () on the line. The corresponding broadcast is then processed in the OnReceive () method.

Public class Networkreceiver extends Broadcastreceiver {
Public voidOnReceive (Context context, Intent Intent) {State wifistate=NULL; State Mobilestate=NULL; Connectivitymanager cm=(Connectivitymanager) context. Getsystemservice (Context.connectivity_service); Wifistate=Cm.getnetworkinfo (Connectivitymanager.type_wifi). GetState (); Mobilestate=Cm.getnetworkinfo (connectivitymanager.type_mobile). GetState (); if(Mobilestate! =NULL&& state.connected = =mobilestate) {            //Mobile network Connection successful                   if(Cm.getactivenetworkinfo (). Getextrainfo (). toLowerCase (). Equals ("Cmnet")) {                          //Cmnet Links}Else{                         //cmwap link, add China Mobile Agent

Httphost proxy = new Httphost ("10.0.0.172", 80);

conn = (httpurlconnection) url.openconnection (proxy);

                 }        elseif (state.connected! =                wifistate&& state.connected ! = mobilestate)            {//  phone does not have any network        elseifnull && state.connected = = wifistate)            {///  Wireless network connection successful }}     } 

Then, we need to register this broadcast in the app, there are two ways to register the broadcast, ① to register in Androidmanifest.xml

<receiverAndroid:name= "Com.test.NetworkBroadcast"Android:label= "Networkconnection" >            <Intent-filter>                <ActionAndroid:name= "Android.net.conn.CONNECTIVITY_CHANGE" />            </Intent-filter></receiver>

② is registered in the Java code, registered in the activity's OnCreate () method, unloaded in the Ondestory () method

Private Broadcastreceiver networkbroadcast=Newnew//  Set Priority  Filter.setpriority (integer.max_value); this. Registerreceiver (networkbroadcast, filter);

Unloading:

if NULL ) {    this. Unregisterreceiver (networkbroadcast);    Networkbroadcast=null;}

③ Adding permissions

<android:name= "Android.permission.ACCESS_NETWORK_STATE"/> 

If the program is hidden in the background, it is recommended to open a service, the Broadcastreceiver registered in the service. such as phone interception, IP dialing, detection of SD card status, boot status and so on.

Internet link status for Android