Android工具类系列-NetUtil

来源：互联网发布：linux杀毒编辑：程序博客网时间：2024/05/22 20:59

原文地址：
http://blog.csdn.net/lmj623565791/article/details/38965311

主要时判断是否有网络，以及wifi状态，和打开网络设置界面。

package org.yxm.android.utils;import android.app.Activity;import android.content.ComponentName;import android.content.Context;import android.content.Intent;import android.net.ConnectivityManager;import android.net.NetworkInfo;/** * Created by yxm on 16-6-23. */public class NetUtil {    private NetUtil() {        throw new UnsupportedOperationException("cannot be instantiated");    }    /**     * 判断网络是否连接     */    public static boolean isConnected(Context context) {        ConnectivityManager connectivity = (ConnectivityManager) context                .getSystemService(Context.CONNECTIVITY_SERVICE);        if (null != connectivity) {            NetworkInfo info = connectivity.getActiveNetworkInfo();            if (null != info && info.isConnected()) {                if (info.getState() == NetworkInfo.State.CONNECTED) {                    return true;                }            }        }        return false;    }    /**     * 判断是否是wifi连接     */    public static boolean isWifi(Context context) {        ConnectivityManager cm = (ConnectivityManager) context                .getSystemService(Context.CONNECTIVITY_SERVICE);        if (cm == null)            return false;        return cm.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_WIFI;    }    /**     * 打开网络设置界面     */    public static void openSetting(Activity activity) {        Intent intent = new Intent("/");        ComponentName cm = new ComponentName("com.android.settings",                "com.android.settings.WirelessSettings");        intent.setComponent(cm);        intent.setAction("android.intent.action.VIEW");        activity.startActivityForResult(intent, 0);    }}

0 0