工具类--NetUtil 判断网络状态

最新推荐文章于 2022-03-31 14:31:36 发布

jackron2014

最新推荐文章于 2022-03-31 14:31:36 发布

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分类专栏： Android

本文链接：https://blog.youkuaiyun.com/jackron2014/article/details/52276316

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本文提供了多种用于检测设备网络状态的方法，包括检查网络连接、验证WiFi连接状态、判断是否有外网连接等。此外还介绍了如何判断GPS是否可用及如何打开GPS设置页面。

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public class NetUtil {

    public static boolean isNetConnected(Context context) {

        boolean isNetConnected;
        // 获得网络连接服务
        ConnectivityManager connManager = (ConnectivityManager) context.getApplicationContext()
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo info = connManager.getActiveNetworkInfo();
        if (info != null && info.isConnected()) {
            // 判断当前网络是否已经连接
            return info.getState() == NetworkInfo.State.CONNECTED;
        } else {
            isNetConnected = false;
        }
        return isNetConnected;

    }

    // Gps是否可用
    public static boolean isGpsEnable(Context context) {
        LocationManager locationManager = ((LocationManager) context
                .getSystemService(Context.LOCATION_SERVICE));
        return locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
    }

    // 打开GPS设置页面
    public static void openGPSSetting(Context context) {
        Intent intent = new Intent();
        intent.setAction(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        try {
            context.startActivity(intent);

        } catch (ActivityNotFoundException ex) {

            // The Android SDK doc says that the location settings activity
            // may not be found. In that case show the general settings.

            // General settings activity
            intent.setAction(Settings.ACTION_SETTINGS);
            try {
                context.startActivity(intent);
            } catch (Exception e) {
            }
        }
    }

    /**
     * @return
     * @author suncat
     * @category 判断是否有外网连接（普通方法不能判断外网的网络是否连接，比如连接上局域网）
     */
    public static final boolean ping() {

        String result = null;
        try {
            String ip = "www.baidu.com";// ping 的地址，可以换成任何一种可靠的外网
            Process p = Runtime.getRuntime().exec("ping " + ip);// ping网址3次 -c 3
            // -w 100
            // ping的状态
            int status = p.waitFor();
            if (status == 0) {
                result = "success";
                return true;
            } else {
                result = "failed";
            }
        } catch (IOException e) {
            result = "IOException";
        } catch (InterruptedException e) {
            result = "InterruptedException";
        } finally {
            Log.d("----result---", "result = " + result);
        }
        return false;
    }

    /**
     * 验证wifi是否连接
     *
     * @param context
     * @return true-连接；false-未连接
     */
    public static final boolean isWifiConnected(Context context) {
        ConnectivityManager connectivityManager = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        return connectivityManager
                .getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnected();
    }

    /**
     * 判断是否为WIFI网络
     *
     * @param context
     * @return
     */
    public static final 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;
    }
}