android network develop(2)----network status check
Check & Get network status
Normally, there will be two type with phone network: wifi & mobile(gprs,3g,4fg)
So, we have can test connect and get the connect type.
1.check connect:
public static boolean isOnline(Context context)
{
ConnectivityManager connMgr = (ConnectivityManager)
context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
return (networkInfo != null && networkInfo.isConnected());
}
2.get connect type:
public static NetWorkStatus traceConnectStatus(Context context) { NetWorkStatus mStatus = NetWorkStatus.INVALID;
ConnectivityManager connMgr = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr
.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
boolean isWifiConn = networkInfo.isConnected();
networkInfo = connMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
boolean isMobileConn = networkInfo.isConnected(); if (isMobileConn) {
if (isWifiConn) {
mStatus = NetWorkStatus.BOTH;
} else {
mStatus = NetWorkStatus.GPRS;
}
} else {
if (isWifiConn) {
mStatus = NetWorkStatus.WIFI;
} else {
mStatus = NetWorkStatus.INVALID;
}
}
return mStatus;
}
3.connect status changed:
there is an intent we can listener. "android.net.conn.CONNECTIVITY_CHANGE"
package com.joyfulmath.androidstudy.connect; import java.lang.ref.WeakReference; import com.joyfulmath.androidstudy.TraceLog; import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.ConnectivityManager;
import android.net.NetworkInfo; public class NetWorkUtils { public static final String CONNECTIVITY_CHANGE_ACTION = "android.net.conn.CONNECTIVITY_CHANGE";
public enum NetWorkStatus{
INVALID,GPRS,WIFI,BOTH
}
private WeakReference<Context> mWeakContext = null;
private ConnectReceiver mConReceiver = null;
// private NetWorkStatus mNetWorkStatus = NetWorkStatus.INVALID; public static NetWorkStatus traceConnectStatus(Context context) { NetWorkStatus mStatus = NetWorkStatus.INVALID;
ConnectivityManager connMgr = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr
.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
boolean isWifiConn = networkInfo.isConnected();
networkInfo = connMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
boolean isMobileConn = networkInfo.isConnected(); if (isMobileConn) {
if (isWifiConn) {
mStatus = NetWorkStatus.BOTH;
} else {
mStatus = NetWorkStatus.GPRS;
}
} else {
if (isWifiConn) {
mStatus = NetWorkStatus.WIFI;
} else {
mStatus = NetWorkStatus.INVALID;
}
}
return mStatus;
} public static boolean isOnline(Context context)
{
ConnectivityManager connMgr = (ConnectivityManager)
context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
return (networkInfo != null && networkInfo.isConnected());
} public NetWorkUtils(Context context)
{
mWeakContext = new WeakReference<Context>(context);
} public void registerConnectReceiver() {
if (mWeakContext.get() != null) { if (mConReceiver == null) {
mConReceiver = new ConnectReceiver();
}
IntentFilter filter = new IntentFilter();
filter.addAction(CONNECTIVITY_CHANGE_ACTION);
filter.setPriority(1000);
mWeakContext.get().registerReceiver(mConReceiver, filter);
} } public void unRegisterConnectReceiver()
{
if(mWeakContext.get()!=null && mConReceiver!=null)
{
mWeakContext.get().unregisterReceiver(mConReceiver);
mConReceiver = null;
} } private void connectChanged()
{
if(mWeakContext.get()!=null)
{
NetWorkStatus status = traceConnectStatus(mWeakContext.get());
TraceLog.i("status:"+status);
}
} public class ConnectReceiver extends BroadcastReceiver{ @Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if(action!=null && action.equals(CONNECTIVITY_CHANGE_ACTION))
{
connectChanged();
}
} } }
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