无线连接，断开连接监听器

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问题描述

哪些监听器我的类必须实现序自动检查code如果WiFi连接/断开？

我可以手动检查无线网络连接/断开，但每次我需要从Android设置连接/断开WIFI，然后运行我的程序，结果的时间。

请帮忙。感谢名单提前。

我目前的code是简单的：

  WifiManager无线=（WifiManager）getSystemService（Context.WIFI_SERVICE）;
如果（wifi.isWifiEnabled（）==真）
{
    tv.setText（您已连接）;
}
其他
{
    tv.setText（未连接）;
}

解决方案

其实你检查无线网络连接是否启用的，这并不一定意味着它的连接。这只是意味着无线网络连接模式在手机上启用，并能够连接到Wi-Fi网络。

这是怎么我听着实际的Wi-Fi连接我的广播接收器：

 公共类WifiReceiver扩展的BroadcastReceiver {

    @覆盖
    公共无效的onReceive（上下文的背景下，意图意图）{
        ConnectivityManager赌侠=（ConnectivityManager）context.getSystemService（Context.CONNECTIVITY_SERVICE）;
        的NetworkInfo的NetInfo = conMan.getActiveNetworkInfo（）;
        如果（NetInfo的= NULL和放大器;！＆安培; netInfo.getType（）== ConnectivityManager.TYPE_WIFI）
            Log.d（WifiReceiver，有wifi连接）;
        其他
            Log.d（WifiReceiver，别有WIFI连接）;
    }
};

为了获得你需要以下用途，允许添加到您的AndroidManifest.xml活动网络信息：

 ＆LT;使用-权限的Android：名称=android.permission.ACCESS_NETWORK_STATE/＆GT;

和下面的意图接收器（或您可以添加此编程...）

 ＆LT;！ - 接收Wi-Fi连接状态的变化 - ＆GT;
＆LT;接收机器人：名称=。WifiReceiver＆GT;
    ＆LT;意向滤光器＆gt;
        ＆lt;作用机器人：名称=android.net.conn.CONNECTIVITY_CHANGE/＆GT;
    ＆所述; /意图滤光器＆gt;
＆LT; /接收器＆GT;

编辑：在棒棒糖，工作调度会帮助，如果你正在寻找，当用户连接到未计量的网络连接要执行的操作。请看下图：http://developer.android.com/about/versions/android-5.0.html#Power

编辑2：另一个考虑是，我的回答不会检查你有一个连接的到互联网的。您可以连接到Wi-Fi网络，需要您签字这里是一个有用的IsOnline（）检查以下内容：http://stackoverflow.com/a/27312494/1140744

Which listener does my class have to implement inorder to automatically check code if the wifi connects/disconnects ?

I'm able to manually check for wifi connection/disconnection but each time i need to connect/disconnect WIFI from android settings and then run my program for the result.

Please help. Thanx in advance.

My current code is as simple as :

WifiManager wifi = (WifiManager)getSystemService(Context.WIFI_SERVICE);
if (wifi.isWifiEnabled()==true)
{
    tv.setText("You are connected");
}
else
{
    tv.setText("You are NOT connected");
}

解决方案

Actually you're checking for whether Wi-Fi is enabled, that doesn't necessarily mean that it's connected. It just means that Wi-Fi mode on the phone is enabled and able to connect to Wi-Fi networks.

This is how I'm listening for actual Wi-Fi connections in my Broadcast Receiver:

public class WifiReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        ConnectivityManager conMan = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo netInfo = conMan.getActiveNetworkInfo();
        if (netInfo != null && netInfo.getType() == ConnectivityManager.TYPE_WIFI)
            Log.d("WifiReceiver", "Have Wifi Connection");
        else
            Log.d("WifiReceiver", "Don't have Wifi Connection");
    }
};

In order to access the active network info you need to add the following uses-permission to your AndroidManifest.xml:

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

And the following intent receiver (or you could add this programmatically...)

<!-- Receive Wi-Fi connection state changes -->
<receiver android:name=".WifiReceiver">
    <intent-filter>
        <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
    </intent-filter>
</receiver>

EDIT: In Lollipop, Job Scheduling may help if you're looking to perform an action when the user connects to an unmetered network connection. Take a look: http://developer.android.com/about/versions/android-5.0.html#Power

EDIT 2: Another consideration is that my answer doesn't check that you have a connection to the internet. You could be connected to a Wi-Fi network which requires you to sign in. Here's a useful "IsOnline()" check: http://stackoverflow.com/a/27312494/1140744

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