Question

我想听取连接更改并按以下方式尝试：

清单

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

<!-- ....... -->

<receiver
        android:name="<packagename>.ConnectionReceiver">
        <intent-filter>
            <action android:name="ConnectivityManager.CONNECTIVITY_ACTION" />
        </intent-filter>
 </receiver>

类

public class ConnectionReceiver extends BroadcastReceiver {

private static final String TAG = "ConnectionReceiver";

@Override
public void onReceive(Context context, Intent intent) {

    Log.i(TAG, "Connection changed");

        }
}

不幸的是，当我打开和关闭WiFi连接时，它似乎没有被调用。

这里有什么问题，我错过了什么吗？

Answer 1

您可以尝试这样的事情：

在“manifest”

下的AndroidManifest.xml中

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

在“application”

下的AndroidManifest.xml中

<receiver android:name="com.blackboard.androidtest.receiver.ConnectionChangeReceiver"           android:label="NetworkConnection">  
<intent-filter> 
<action android:name="android.net.conn.CONNECTIVITY_CHANGE"/>
</intent-filter>      
</receiver>

接收者类：

    public class ConnectionChangeReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();
        NetworkInfo mobNetInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
        if (activeNetInfo != null) {
            Toast.makeText(context, "Active Network Type : " + activeNetInfo.getTypeName(), Toast.LENGTH_SHORT).show();
        }
        if (mobNetInfo != null) {
            Toast.makeText(context, "Mobile Network Type : " + mobNetInfo.getTypeName(), Toast.LENGTH_SHORT).show();
        }
    }
}

Receiver for connection事件不起作用

1 个答案: