判断网络状态 Wifi 移动网络

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/HandsomeFuHS/article/details/60580126

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

public class NetworkStateUtil {
    public static boolean isNetworkAvailable() {
        //判断网络是否可用   和是否连接是两码事
        ConnectivityManager cm = (ConnectivityManager) MyApplication.getContext()
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        if (cm == null) {
            return false;
        } else {
            //如果仅仅是用来判断网络连接
            //则可以使用 cm.getActiveNetworkInfo().isAvailable();
            NetworkInfo info = cm.getActiveNetworkInfo();
            if (info == null)
                return false;
            if (info.getState() == NetworkInfo.State.CONNECTED)
                return true;
        }
        return false;
    }
    //判断GPS是否打开
    public static boolean isGpsEnabled(Context context) {   
        LocationManager lm = ((LocationManager) context   
                .getSystemService(Context.LOCATION_SERVICE));   
        List<String> accessibleProviders = lm.getProviders(true);   
        return accessibleProviders != null && accessibleProviders.size() > 0;   
    } 
    //判断WIFI是否打开
    public static boolean isWifiEnabled(Context context) {   
        ConnectivityManager mgrConn = (ConnectivityManager) context   
                .getSystemService(Context.CONNECTIVITY_SERVICE);   
        TelephonyManager mgrTel = (TelephonyManager) context   
                .getSystemService(Context.TELEPHONY_SERVICE);   
        return ((mgrConn.getActiveNetworkInfo() != null && mgrConn   
                .getActiveNetworkInfo().getState() == NetworkInfo.State.CONNECTED) || mgrTel   
                .getNetworkType() == TelephonyManager.NETWORK_TYPE_UMTS);   
    } 
    //判断是否是移动网络
    public static boolean is3rd(Context context) {   
        ConnectivityManager cm = (ConnectivityManager) context   
                .getSystemService(Context.CONNECTIVITY_SERVICE);   
        NetworkInfo networkINfo = cm.getActiveNetworkInfo();   
        if (networkINfo != null   
                && networkINfo.getType() == ConnectivityManager.TYPE_MOBILE) {   
            return true;   
        }   
        return false;   
    }  
    //判断是否连接了wifi
    public static boolean isWifi(Context context) {   
            ConnectivityManager cm = (ConnectivityManager) context   
                    .getSystemService(Context.CONNECTIVITY_SERVICE);   
            NetworkInfo networkINfo = cm.getActiveNetworkInfo();   
            if (networkINfo != null   
                    && networkINfo.getType() == ConnectivityManager.TYPE_WIFI) {   
                return true;   
            }   
            return false;   
        }
}