Vignesh Bala Vignesh Bala - 1 month ago 15
Android Question

Android application without GUI

I have been developing a simple application without UI using broadcast receiver.

The app doesn't contain any ACTIVITIES.

I have given necessary permissions.

I took the code from this url:http://developerandro.blogspot.in/2013/09/check-internet-connection-using.html

The app shows a toast "Not connected to internet" when I click change wifi state. It's working correctly.

But my question is There is an activity registered in my manifest file which I don't have. So I delete those lines from my manifest. Then no toasts are shown and I checked the logs too. No output on changing wifi state.

Why this happened? Please help me guys...

Here is the manifest file:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.broadcast_internetcheck"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />

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

<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.broadcast_internetcheck.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

<receiver
android:name="com.example.broadcast_internetcheck.NetworkChangeReceiver"
android:label="NetworkChangeReceiver" >
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
<action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
</intent-filter>
</receiver>
</application>

</manifest>


Here is my Broadcastreceiver class:

public class NetworkChangeReceiver extends BroadcastReceiver{

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

String status = NetworkUtil.getConnectivityStatusString(context);
/*Above line will return the status of wifi */
Toast.makeText(context, status, Toast.LENGTH_LONG).show();

}
}

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