广播接收器不工作（如果检测到无线连接） [英] BroadcastReceiver is not working (detect if wifi is connected)

问题描述

我试图用一个BroadcastReceiver来检测，如果无线网络连接，并只显示敬酒时的状态变化（WIFI disonnect /重新连接/关闭），但它似乎并不奏效。任何想法？

I'm trying to use a BroadcastReceiver to detect if wifi is connected and simply display a toast when the status changes (wifi disonnect/reconnect/turn off) but it doesn't seem to be working. Any ideas?

ConnectionChangeReceiver类：

ConnectionChangeReceiver class:

public class ConnectionChangeReceiver extends BroadcastReceiver
{
    @Override
    public void onReceive( Context context, Intent intent )
    {
         ConnectivityManager connMgr = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
         NetworkInfo networkInfo = connMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI); 

         final boolean isWifiConn = networkInfo.isConnected();

         Log.d("debug", "Wifi connected: " + isWifiConn);

         Toast toast = Toast.makeText(context, "Wifi connected: " + isWifiConn, Toast.LENGTH_LONG);
         toast.show();     
    }
}

清单：

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


    <receiver android:name="ConnectionChangeReceiver" android:label="NetworkConnection">
        <intent-filter>
            <action android:name="android.net.wifi.WIFI_STATE_CHANGED"/>
            <action android:name="android.net.wifi.STATE_CHANGE"/>
        </intent-filter>
    </receiver>

我走在应用程序，并断开无线网络连接，重新连接，没有面包。我禁用无线网络，没有面包。重新启用它，没有面包。我怀疑，有一些错误的广播接收机。

I go in the app, and disconnect wifi, reconnect, no toast. I disable wifi, no toast. re-enable it, no toast. I suspect that there's something wrong with the broadcast receiver.

先谢谢了。

推荐答案

我得到了它的工作。

我的问题是在清单中。我把我的接收器模块应用程序标记之外。有一次，我内移动它，它完美地工作。

My problem was in the Manifest. I was putting my receiver block outside the application tag. Once I moved it inside, it worked perfectly.

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