[判断手机网络状态]

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

public class NetStateUtils {

/**
* 判断网络连接状态
*
* @param context
* @return  true：网络已链接， false：网络已断开连接
*/
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状态
*
* @param context
* @return true：是wifi情况 ，false：非wifi情况
*/
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;
}

/**
* 判断移动网络
*
* @param context
* @return true：是移动网络情况， false：非移动网络情况
*/
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;
}

/**
* 获取连接类型
*
* @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;
}
}

<!-- 改变网络状态的权限 -->
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<!-- 访问网络的权限 -->
<uses-permission android:name="android.permission.INTERNET" />
<!-- 访问网络状态的权限 -->
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<!-- 访问WIFI网络状态的权限 -->
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<!-- 改变WIFI网络状态的权限 -->
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<!-- 读写存储卡的权限 -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<!-- 读取电话状态的权限 -->
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<!-- 电话拨号的权限 -->
<uses-permission android:name="android.permission.CALL_PHONE" />
<!-- 发送短信的权限 -->
<uses-permission android:name="android.permission.SEND_SMS"/>
<!-- 读取系统开机权限 -->
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />