android网络相关的工具类

android网络相关的工具类

<uses-permission android:name="android.permission.INTERNET" />

<!-- 查询网络状态权限 -->

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

粘过去就可以用了

package com.activity;

import java.util.List;

import android.content.Context;
import android.location.LocationManager;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.telephony.TelephonyManager;

/**
 * 跟网络相关的工具类
 */
public class NetUtils {

    /**
     * 网络是否可用
     *
     * @param activity
     * @return
     */
    public static boolean isNetworkAvailable(Context context) {
        ConnectivityManager connectivity = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        if (connectivity == null) {
        } else {
            NetworkInfo[] info = connectivity.getAllNetworkInfo();
            if (info != null) {
                for (int i = 0; i < info.length; i++) {
                    if (info[i].getState() == NetworkInfo.State.CONNECTED) {
                        return true;
                    }
                }
            }
        }
        return false;
    }

    /**
     * Gps是否打开
     *
     * @param context
     * @return
     */
    public static boolean isGpsEnabled(Context context) {
        LocationManager locationManager = ((LocationManager) context
                .getSystemService(Context.LOCATION_SERVICE));
        List<String> accessibleProviders = locationManager.getProviders(true);
        return accessibleProviders != null && accessibleProviders.size() > 0;
    }

    /**
     * wifi是否打开
     */
    public static boolean isWifiEnabled(Context context) {
        ConnectivityManager mgrConn = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        TelephonyManager mgrTel = (TelephonyManager) context
                .getSystemService(Context.TELEPHONY_SERVICE);
        return ((mgrConn.getActiveNetworkInfo() != null && mgrConn
                .getActiveNetworkInfo().getState() == NetworkInfo.State.CONNECTED) || mgrTel
                .getNetworkType() == TelephonyManager.NETWORK_TYPE_UMTS);
    }

    /**
     * 判断当前网络是否是wifi网络
     * if(activeNetInfo.getType()==ConnectivityManager.TYPE_MOBILE) {
     *
     * @param context
     * @return boolean
     */
    public static boolean isWifi(Context context) {
        ConnectivityManager connectivityManager = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();
        if (activeNetInfo != null
                && activeNetInfo.getType() == ConnectivityManager.TYPE_WIFI) {
            return true;
        }
        return false;
    }

    /**
     * 判断当前网络是否3G网络
     *
     * @param context
     * @return boolean
     */
    public static boolean is3G(Context context) {
        ConnectivityManager connectivityManager = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();
        if (activeNetInfo != null
                && activeNetInfo.getType() == ConnectivityManager.TYPE_MOBILE) {
            return true;
        }
        return false;
    }

}