CommonUtils.java

package com.diandi.demo.util;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

/**
 * *******************************************************************************
 * *********    Author : klob(kloblic@gmail.com) .
 * *********    Date : 2014-11-29  .
 * *********    Time : 11:46 .
 * *********    Project name : Diandi1.18 .
 * *********    Version : 1.0
 * *********    Copyright @ 2014, klob, All Rights Reserved
 * *******************************************************************************
 */
public class CommonUtils {

    /**
     * 检查是否有网络
     */
    public static boolean isNetworkAvailable(Context context) {
        NetworkInfo info = getNetworkInfo(context);
        if (info != null) {
            return info.isAvailable();
        }
        return false;
    }

    /**
     * 检查是否是WIFI
     */
    public static boolean isWifi(Context context) {
        NetworkInfo info = getNetworkInfo(context);
        if (info != null) {
            if (info.getType() == ConnectivityManager.TYPE_WIFI)
                return true;
        }
        return false;
    }

    /**
     * 检查是否是移动网络
     */
    public static boolean isMobile(Context context) {
        NetworkInfo info = getNetworkInfo(context);
        if (info != null) {
            if (info.getType() == ConnectivityManager.TYPE_MOBILE)
                return true;
        }
        return false;
    }

    private static NetworkInfo getNetworkInfo(Context context) {

        ConnectivityManager cm = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        return cm.getActiveNetworkInfo();
    }

    /**
     * 检查SD卡是否存在
     */
    public static boolean checkSdCard() {
        if (android.os.Environment.getExternalStorageState().equals(
                android.os.Environment.MEDIA_MOUNTED))
            return true;
        else
            return false;
    }

}