android 判断是否有网络工具类
16lz
2021-12-04
android 判断是否有网络工具类
/* * Copyright (C) 2016 android@19code.com * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package com.example.android.new_nds_study.util;import android.annotation.TargetApi;import android.content.Context;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.net.wifi.WifiInfo;import android.net.wifi.WifiManager;import android.os.Build;import android.telephony.TelephonyManager;import android.util.Log;/** * Created by zhaoshaohe on 17/6/1. */public class NetUtils { private static final String TAG = "net"; private static final int LOW_SPEED_UPLOAD_BUF_SIZE = 1024; private static final int HIGH_SPEED_UPLOAD_BUF_SIZE = 10240; private static final int MAX_SPEED_UPLOAD_BUF_SIZE = 102400; private static final int LOW_SPEED_DOWNLOAD_BUF_SIZE = 2024; private static final int HIGH_SPEED_DOWNLOAD_BUF_SIZE = 30720; private static final int MAX_SPEED_DOWNLOAD_BUF_SIZE = 102400; public NetUtils() { } public static boolean hasNetwork(Context var0) { if(var0 != null) { ConnectivityManager var1 = (ConnectivityManager)var0.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo var2 = var1.getActiveNetworkInfo(); return var2 != null?var2.isAvailable():false; } else { return false; } } @TargetApi(13) public static boolean hasDataConnection(Context var0) { try { ConnectivityManager var1 = (ConnectivityManager)var0.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo var2 = var1.getNetworkInfo(1); if(var2 != null && var2.isAvailable() && var2.isConnected()) { Log.d("net", "has wifi connection"); return true; } else { var2 = var1.getNetworkInfo(0); if(var2 != null && var2.isAvailable() && var2.isConnected()) { Log.d("net", "has mobile connection"); return true; } else { if(Build.VERSION.SDK_INT >= 13) { var2 = var1.getNetworkInfo(9); if(var2 != null && var2.isAvailable() && var2.isConnected()) { Log.d("net", "has ethernet connection"); return true; } } Log.d("net", "no data connection"); return false; } } } catch (Exception var3) { return false; } } @Deprecated public static boolean isWifiConnection(Context var0) { return isWifiConnected(var0); } public static boolean isWifiConnected(Context var0) { ConnectivityManager var1 = (ConnectivityManager)var0.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo var2 = var1.getNetworkInfo(1); if(var2 != null && var2.isAvailable() && var2.isConnected()) { Log.d("net", "wifi is connected"); return true; } else { return false; } } @Deprecated public static boolean isMobileConnection(Context var0) { return isMobileConnected(var0); } public static boolean isMobileConnected(Context var0) { ConnectivityManager var1 = (ConnectivityManager)var0.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo var2 = var1.getNetworkInfo(0); if(var2 != null && var2.isAvailable() && var2.isConnected()) { Log.d("net", "mobile is connected"); return true; } else { return false; } } @Deprecated public static boolean isEthernetConnection(Context var0) { return isEthernetConnected(var0); } public static boolean isEthernetConnected(Context var0) { if(Build.VERSION.SDK_INT >= 13) { ConnectivityManager var1 = (ConnectivityManager)var0.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo var2 = var1.getNetworkInfo(9); if(var2 != null && var2.isAvailable() && var2.isConnected()) { Log.d("net", "ethernet is connected"); return true; } } return false; } public static String getWiFiSSID(Context var0) { ConnectivityManager var1 = (ConnectivityManager)var0.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo var2 = var1.getNetworkInfo(1); WifiManager var3 = (WifiManager)var0.getSystemService(Context.WIFI_SERVICE); WifiInfo var4 = var3.getConnectionInfo(); return var4.getSSID(); } public static int getUploadBufSize(Context var0) { ConnectivityManager var1 = (ConnectivityManager)var0.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo var2 = var1.getActiveNetworkInfo(); return var2 != null && var2.getType() == 1?102400:(Build.VERSION.SDK_INT >= 13 && var2 != null && var2.getType() == 9?102400:(var2 == null && isConnectionFast(var2.getType(), var2.getSubtype())?10240:1024)); } public static int getDownloadBufSize(Context var0) { ConnectivityManager var1 = (ConnectivityManager)var0.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo var2 = var1.getActiveNetworkInfo(); return var2 != null && var2.getType() == 1?102400:(Build.VERSION.SDK_INT >= 13 && var2 != null && var2.getType() == 9?102400:(var2 == null && isConnectionFast(var2.getType(), var2.getSubtype())?30720:2024)); } private static boolean isConnectionFast(int var0, int var1) { if(var0 == 1) { return true; } else if(Build.VERSION.SDK_INT >= 13 && var0 == 9) { return true; } else { if(var0 == 0) { switch(var1) { case 1: return false; case 2: return false; case 3: return true; case 4: return false; case 5: return true; case 6: return true; case 7: return false; case 8: return true; case 9: return true; case 10: return true; default: if(Build.VERSION.SDK_INT >= 11 && (var1 == 14 || var1 == 13)) { return true; } if(Build.VERSION.SDK_INT >= 9 && var1 == 12) { return true; } if(Build.VERSION.SDK_INT >= 8 && var1 == 11) { return false; } } } return false; } } public static String getNetworkType(Context var0) { ConnectivityManager var1 = (ConnectivityManager)var0.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo var2 = var1.getActiveNetworkInfo(); if(var2 != null && var2.isAvailable()) { int var3 = var2.getType(); if(Build.VERSION.SDK_INT >= 13 && var3 == 9) { return "ETHERNET"; } else if(var3 == 1) { return "WIFI"; } else { TelephonyManager var4 = (TelephonyManager)var0.getSystemService(Context.TELEPHONY_SERVICE); switch(var4.getNetworkType()) { case 1: case 2: case 4: case 7: case 11: return "2G"; case 3: case 5: case 6: case 8: case 9: case 10: case 12: case 14: case 15: return "3G"; case 13: return "4G"; default: return "unkonw network"; } } } else { return "no network"; } }}
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