Android中判断网络是否可用的代码分享
来源：互联网 发布：软件行业发展趋势 编辑：程序博客网 时间：2024/06/03 19:25
import android.content.Context; import android.net.ConnectivityManager;import android.net.NetworkInfo; import android.telephony.TelephonyManager; /** * Created by hackcoder on 15-1-25. */public class NetWorkUtils { /** * 判断是否有网络连接 * @param context * @return */ public static boolean isNetworkConnected(Context context) { if (context != null) { ConnectivityManager mConnectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo(); if (mNetworkInfo != null) { return mNetworkInfo.isAvailable(); } } return false; } /** * 判断WIFI网络是否可用 * @param context * @return */ public static boolean isWifiConnected(Context context) { if (context != null) { ConnectivityManager mConnectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo mWiFiNetworkInfo = mConnectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI); if (mWiFiNetworkInfo != null) { return mWiFiNetworkInfo.isAvailable(); } } return false; } /** * 判断MOBILE网络是否可用 * @param context * @return */ public static boolean isMobileConnected(Context context) { if (context != null) { ConnectivityManager mConnectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo mMobileNetworkInfo = mConnectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE); if (mMobileNetworkInfo != null) { return mMobileNetworkInfo.isAvailable(); } } return false; } /** * 获取当前网络连接的类型信息 * @param context * @return */ public static int getConnectedType(Context context) { if (context != null) { ConnectivityManager mConnectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo(); if (mNetworkInfo != null && mNetworkInfo.isAvailable()) { return mNetworkInfo.getType(); } } return -1; } /** * 获取当前的网络状态 ：没有网络0：WIFI网络1：3G网络2：2G网络3 * * @param context * @return */ public static int getAPNType(Context context) { int netType = 0; ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo networkInfo = connMgr.getActiveNetworkInfo(); if (networkInfo == null) { return netType; } int nType = networkInfo.getType(); if (nType == ConnectivityManager.TYPE_WIFI) { netType = 1;// wifi } else if (nType == ConnectivityManager.TYPE_MOBILE) { int nSubType = networkInfo.getSubtype(); TelephonyManager mTelephony = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); if (nSubType == TelephonyManager.NETWORK_TYPE_UMTS && !mTelephony.isNetworkRoaming()) { netType = 2;// 3G } else { netType = 3;// 2G } } return netType; } } package cn.hackcoder.beautyreader.broadcast; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.net.ConnectivityManager; import android.util.Log; import android.widget.Toast; import cn.hackcoder.beautyreader.activity.base.BaseActivity; import cn.hackcoder.beautyreader.utils.NetWorkUtils; public class NetWorkStatusReceiver extends BroadcastReceiver { public NetWorkStatusReceiver() { } @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (action.equals(ConnectivityManager.CONNECTIVITY_ACTION)) { Toast.makeText(context, "network changed", Toast.LENGTH_LONG).show(); BaseActivity.isNetWorkConnected = NetWorkUtils.getAPNType(context)>0; } } }注册：<receiver android:name=".broadcast.NetWorkStatusReceiver" android:enabled="true" android:exported="true"> <intent-filter> <action android:name="android.net.conn.CONNECTIVITY_CHANGE" /> </intent-filter> </receiver>
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