99 lines
3.4 KiB
Java
99 lines
3.4 KiB
Java
package com.android.device;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.net.ConnectivityManager;
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import com.android.util.LogUtils;
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import com.android.util.NetUtil;
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import com.android.util.NetworkType;
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import com.android.util.NetworkUtil;
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import java.util.ArrayList;
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import java.util.List;
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public class NetStateChangeReceiver extends BroadcastReceiver {
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private static class InstanceHolder {
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private static final NetStateChangeReceiver INSTANCE = new NetStateChangeReceiver();
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}
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private List<NetStateChangeObserver> mObservers = new ArrayList<>();
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// private int lastEffectiveNetworkType = -1;
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// @Override
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// public void onReceive(Context context, Intent intent) {
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// if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) {
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// int currentNetState = NetUtil.getNetWorkState(context);
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// int currentEffectiveType = NetUtil.getEffectiveNetworkType(currentNetState);
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// if (currentEffectiveType == lastEffectiveNetworkType) {
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// LogUtils.loge("NetStateChangeReceiver：同类型网络波动，跳过通知（类型：" +
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// NetUtil.getTypeName(currentEffectiveType) + "）");
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// return;
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// }
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//
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// //类型变更 通知观察者，并更新上次类型
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// lastEffectiveNetworkType = currentEffectiveType;
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// NetworkType networkType = NetworkUtil.getNetworkType(context);
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// LogUtils.loge("NetStateChangeReceiver：网络类型变更（" +
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// NetUtil.getTypeName(lastEffectiveNetworkType) + "），通知观察者");
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// notifyObservers(networkType);
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// }
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// }
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@Override
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public void onReceive(Context context, Intent intent) {
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if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) {
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NetworkType networkType = NetworkUtil.getNetworkType(context);
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LogUtils.loge("NetStateChangeReceiver:"+networkType.toString());
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notifyObservers(networkType);
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}
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}
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public static void registerReceiver(Context context) {
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IntentFilter intentFilter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
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context.registerReceiver(InstanceHolder.INSTANCE, intentFilter);
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}
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public static void unRegisterReceiver(Context context) {
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context.unregisterReceiver(InstanceHolder.INSTANCE);
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}
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public static void registerObserver(NetStateChangeObserver observer) {
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if (observer == null) {
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return;
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}
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if (!InstanceHolder.INSTANCE.mObservers.contains(observer)) {
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InstanceHolder.INSTANCE.mObservers.add(observer);
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}
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}
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public static void unRegisterObserver(NetStateChangeObserver observer) {
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if (observer == null) {
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return;
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}
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if (InstanceHolder.INSTANCE.mObservers == null) {
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return;
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}
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InstanceHolder.INSTANCE.mObservers.remove(observer);
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}
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private void notifyObservers(NetworkType networkType) {
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if (networkType == NetworkType.NETWORK_NO) {
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for (NetStateChangeObserver observer : mObservers) {
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observer.onNetDisconnected();
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}
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} else {
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for (NetStateChangeObserver observer : mObservers) {
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observer.onNetConnected(networkType);
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}
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}
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}
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}
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