判断网络连接（是否连网、是否是手机流量或WIfi连接）

//添加连网权限

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

package com.bawei.network.utils;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

public class NetWorkUtils {

    //判断网络是否连接
    public static boolean isNetWorkAvailable(Context context) {
        //网络连接管理器
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        //网络信息
        NetworkInfo info = connectivityManager.getActiveNetworkInfo();
        if (info != null) {
            return true;
        }


        return false;
    }



    //判断是否是wifi
    public static boolean isWifi(Context context) {
        //网络连接管理器
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        //网络信息
        NetworkInfo info = connectivityManager.getActiveNetworkInfo();
        if (info != null && info.getType() == connectivityManager.TYPE_WIFI) {
            return true;
        }
        return false;
    }

    //判断是否是手机流量
    public static boolean isMobile(Context context) {
        //网络连接管理器
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        //网络信息
        NetworkInfo info = connectivityManager.getActiveNetworkInfo();
        if (info != null && info.getType() == connectivityManager.TYPE_MOBILE) {
            return true;
        }
        return false;
    }
}

package com.bawei.network.activity;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.Toast;


import com.bawei.network.R;
import com.bawei.network.utils.NetWorkUtils;


public class MainActivity extends AppCompatActivity {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

//判断网络连接
       /* boolean available = NetWorkUtils.isNetWorkAvailable(this);
        if (available) {
            Toast.makeText(MainActivity.this, "网络连接成功", Toast.LENGTH_SHORT).show();
        } else {
            Toast.makeText(MainActivity.this, "网络连接失败", Toast.LENGTH_SHORT).show();


        }*/

//是wifi连接，判断是否连接成功
        /*boolean wifi = NetWorkUtils.isWifi(this);
        if (wifi) {
            Toast.makeText(MainActivity.this, "wifi网络连接成功", Toast.LENGTH_SHORT).show();
        } else {
            Toast.makeText(MainActivity.this, "wifi网络连接失败", Toast.LENGTH_SHORT).show();


        }*/

//是手机网络连接，判断是否连接成功
        boolean mobile = NetWorkUtils.isMobile(this);
        if (mobile) {
            Toast.makeText(MainActivity.this, "手机流量网络连接成功", Toast.LENGTH_SHORT).show();


        } else {
            Toast.makeText(MainActivity.this, "手机流量网络连接失败", Toast.LENGTH_SHORT).show();


        }
    }
}