网络判断

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;
}

}