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package com.bumptech.glide.manager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
class DefaultConnectivityMonitor implements ConnectivityMonitor {
private final Context context;
private final ConnectivityListener listener;
private boolean isConnected;
private boolean isRegistered;
private final BroadcastReceiver connectivityReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
boolean wasConnected = isConnected;
isConnected = isConnected(context);
if (wasConnected != isConnected) {
listener.onConnectivityChanged(isConnected);
}
}
};
public DefaultConnectivityMonitor(Context context, ConnectivityListener listener) {
this.context = context.getApplicationContext();
this.listener = listener;
}
private void register() {
if (isRegistered) {
return;
}
isConnected = isConnected(context);
context.registerReceiver(connectivityReceiver, new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));
isRegistered = true;
}
private void unregister() {
if (!isRegistered) {
return;
}
context.unregisterReceiver(connectivityReceiver);
isRegistered = false;
}
private boolean isConnected(Context context) {
ConnectivityManager connectivityManager =
(ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
return networkInfo != null && networkInfo.isConnected();
}
@Override
public void onStart() {
register();
}
@Override
public void onStop() {
unregister();
}
@Override
public void onDestroy() {
// Do nothing.
}
}
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