150 lines
4.9 KiB
Java
150 lines
4.9 KiB
Java
package com.example.nanchen.aiyaschoolpush.net;
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import android.app.Service;
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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 android.net.NetworkInfo;
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import android.os.IBinder;
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import android.support.annotation.Nullable;
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import android.support.v4.content.LocalBroadcastManager;
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import com.example.nanchen.aiyaschoolpush.helper.event.NetStateEvent;
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import com.gitonway.lee.niftymodaldialogeffects.lib.NiftyDialogBuilder;
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import org.greenrobot.eventbus.EventBus;
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/**
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* @author nanchen
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* @fileName AiYaSchoolPush
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* @packageName com.example.nanchen.aiyaschoolpush.net
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* @date 2016/12/01 13:55
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*/
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public class NetworkStateService extends Service {
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// 系统网络连接相关的操作管理类.
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private ConnectivityManager mManager;
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// 网络状态信息的实例
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private NetworkInfo mInfo;
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/**
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* 当前处于的网络
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* 0 ：null
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* 1 : 2G/3G/4G
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* 2 ：wifi
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*/
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public static int networkStatus;
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/**
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* An action name
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*/
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public static final String NETWORKSTATE = "com.text.android.network.state";
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/**
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* 广播实例
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*/
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private BroadcastReceiver mReceiver = new BroadcastReceiver() {
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@Override
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public void onReceive(Context context, Intent intent) {
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// The action of this intent or null if none is specified.
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// action是行动的意思，也许是我水平问题无法理解为什么叫行动，我一直理解为标识（现在理解为意图）
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String action = intent.getAction(); //当前接受到的广播的标识(行动/意图)
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// 当当前接受到的广播的标识(意图)为网络状态的标识时做相应判断
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if (action.equals(ConnectivityManager.CONNECTIVITY_ACTION)) {
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// 获取网络连接管理器
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mManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
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// 获取当前网络状态信息
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mInfo = mManager.getActiveNetworkInfo();
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if (mInfo != null && mInfo.isAvailable()) {
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//当NetworkInfo不为空且是可用的情况下，获取当前网络的Type状态
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//根据NetworkInfo.getTypeName()判断当前网络
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String name = mInfo.getTypeName();
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//更改NetworkStateService的静态变量，之后只要在Activity中进行判断就好了
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if (name.equals("WIFI")) {
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networkStatus = 2;
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} else {
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networkStatus = 1;
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}
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} else {
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// NetworkInfo为空或者是不可用的情况下
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networkStatus = 0;
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// UIUtil.showToast("当前网络不可用，请检查网络连接!");
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EventBus.getDefault().post(new NetStateEvent());
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Intent it = new Intent();
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it.putExtra("networkStatus", networkStatus);
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it.setAction(NETWORKSTATE);
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// sendBroadcast(it); //发送无网络广播给注册了当前服务广播的Activity
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/**
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* 这里推荐使用本地广播的方式发送:
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* LocalBroadcastManager.getInstance(getApplicationContext()).sendBroadcast(intent);
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*/
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LocalBroadcastManager.getInstance(getApplicationContext()).sendBroadcast(intent);
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}
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}
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}
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};
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private NiftyDialogBuilder mDialogBuilder;
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@Nullable
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@Override
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public IBinder onBind(Intent intent) {
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return null;
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}
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@Override
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public void onCreate() {
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super.onCreate();
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//注册网络状态的广播，绑定到mReceiver
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IntentFilter mFilter = new IntentFilter();
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mFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
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registerReceiver(mReceiver, mFilter);
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}
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@Override
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public void onDestroy() {
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super.onDestroy();
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//注销接收
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unregisterReceiver(mReceiver);
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}
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@Override
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public int onStartCommand(Intent intent, int flags, int startId) {
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return super.onStartCommand(intent, flags, startId);
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}
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/**
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* 判断网络是否可用
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*/
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public static boolean isNetworkAvailable(Context context) {
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// 获取网络连接管理器
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ConnectivityManager mgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
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// 获取当前网络状态信息
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NetworkInfo[] info = mgr.getAllNetworkInfo();
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if (info != null) {
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for (int i = 0; i < info.length; i++) {
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if (info[i].getState() == NetworkInfo.State.CONNECTED) {
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return true;
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}
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}
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}
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return false;
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}
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}
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