is there a broadcast if network provider changes in Android? - android

Is that possible that my android app receive a broadcast while my network provider changed?
thanks in advance.

Yes.It is posible to find this.
see the code
public class NetworkStateReceiver extends BroadcastReceiver {
public static final String TAG = "NetworkReceiver";
#Override
public void onReceive(Context context, Intent intent) {
boolean isNetworkDown = intent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, false); // 2
if (isNetworkDown) {
Log.d(TAG, "onReceive: NOT connected, stopping UpdaterService");
}
else
{
Log.d(TAG, "onReceive: connected, starting UpdaterService");
}
}
In the Manifes file add this code
<receiver android:name="NetworkStateReceiver" android:enabled="true">
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
</intent-filter>
</receiver>

Related

BroadCast onReceiver() not calling on Marshmallow and above SDK's

I want to start services from Broadcast Receiver but Marshmallow and above SDK's will not callback. BOOT_COMPLETED is working fine with app foreground & background but CONNECTIVITY_CHANGE is not working on background .
My requirement is, i want to get callback when app with app foreground & background.
My manifest :
<receiver
android:name=".receivers.MessageBroadCastReceiver"
android:enabled="true"
android:exported="false">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
</intent-filter>
</receiver>
My Broadcast Receiver:
public class MessageBroadCastReceiver extends BroadcastReceiver {
private static final String TAG = "MessageBroadCastReceive";
private Context ctx;
#Override
public void onReceive(Context context, Intent intent) {
Log.d(TAG, "AppBroad " + intent.getAction());
this.ctx = context;
if (intent.getAction().equals("android.intent.action.BOOT_COMPLETED")) {
RestartMessageService();
} else if (intent.getAction().equals("android.net.conn.CONNECTIVITY_CHANGE")) {
RestartMessageService();
}
}
}
am tired to registered the Broadcast actions in my main activity its working fine on foreground, once i close my app it will not call (Marshmallow and above SDK's).
Registered code:
private void RegisterReceivers() {
try {
MessageBroadCastReceiver broadCastReceiver = new MessageBroadCastReceiver();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction("android.net.conn.CONNECTIVITY_CHANGE");
intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
getBaseContext().registerReceiver(broadCastReceiver, intentFilter);
PrefManager.getInstance(this).setBroadcastReg(true);
} catch (IllegalArgumentException e) {
e.printStackTrace();
}
}
Please give me solution.
Advance thanks...

I have a Broadcastreceiver to detect when an outgoing call ends. How should I write a method which returns a boolean value if call has ended?

I have the following BroadcastReceiver to detect when an outgoing call has just ended:
public class MyPhoneReceiver extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
Log.d("APP", "ACTION:" + intent.getAction());
if (Intent.ACTION_NEW_OUTGOING_CALL.equals(intent.getAction())) {
final String originalNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
Log.d("APP", "outgoing,ringing:" + originalNumber);
}
}
}
I would like to write a boolean method which return true if a call has just ended, and false otherwise. How is it possible?
public boolean callHasEnded {
//what should I write here?
}
Just to be clear in the manifest I have the following:
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS" />
<receiver android:name=".MyPhoneReceiver" >
<intent-filter>
<action android:name="android.intent.action.NEW_OUTGOING_CALL" />
</intent-filter>
</receiver>
Thanks for your help in advance!

Delay in Android connectivity change broadcast

I am listening for "android.net.conn.CONNECTIVITY_CHANGE" in my app with a broadcast receiver. It does work, but the only problem I have is that there is a huge delay in receiving this broadcast. It takes between 1-2 seconds for the app to receive this broadcast. Am I doing something wrong?
My Manifest entry -
<receiver android:name=".ConnectivityBroadcastReceiver"
android:exported="true">
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE"/>
</intent-filter>
</receiver>
and ConnectivityBroadcastReceiver class -
public class ConnectivityBroadcastReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
Log.e(TAG,"Broadcast received");
final String action = intent.getAction();
if (action.equals(ConnectivityManager.CONNECTIVITY_ACTION)) {
ConnectivityUtil.checkConnectivity(context);
}
}
}

Alarm Manager after shutdown

When I tried this code, everything is working fine except, service is not getting start after device reboot. I want to start same service automatically. I am testing this example by connecting mobile with USB. what do I need to change ?
[http://javatechig.com/android/repeat-alarm-example-in-android]
try like this
<!-- for reboot event to reset alarms -->
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
then
<receiver
android:name="com.yourapp.receiver.RestartAppReceiver"
android:enabled="true"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
next you have to create the BroadcastReceiver class
public class RestartAppReceiver extends BroadcastReceiver {
private static final String LOG_TAG = "RestartAppReceiver";
public RestartAppReceiver() {
}
#Override
public void onReceive(Context context, Intent intent) {
if (intent != null) {
String action = intent.getAction();
switch (action) {
case Intent.ACTION_BOOT_COMPLETED:
Log.i(LOG_TAG, "Start resetting alarms after reboot");
//restart what you need
Log.i(LOG_TAG, "Finish resetting alarms after reboot");
break;
default:
break;
}
}
}
}
You have to create a broadcast receiver that will listen for boot complete event and when that event is received start your service again
<receiver android:name=".Autostart">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
create a class like this and add your code in onReceive method
public class Autostart extends BroadcastReceiver
{
public void onReceive(Context arg0, Intent arg1)
{
Log.i("Autostart", "**********started************");
}
}

Why do dynamically register broadcast receiver didn't work after reboot

I have a onBootCompleted broadcast receiver registered in the manifest.
It runs starts MyService. My service in the onCreate registers 3 more broadcast receivers dynamically.
The 3 new receivers filter on the following intent actions
LOCALE_CHANGED,
TIMEZONE_CHANGED and
CONNECTIVITY_CHANGED.
These works correctly when I run the application from Eclipse but, after I reboot the device and my service starts up none of receivers work.
I have a work around implementation but, I would like to know why this is happening?
Manifest:
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<receiver android:name=".receiver.BootCompletedReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<category android:name="android.intent.category.HOME" />
</intent-filter>
</receiver>
<service
android:name=".MyService"
android:enabled="true"
android:exported="false"
android:stopWithTask="false" >
</service>
Service:
public class MyService()
{
LocationTimeZoneC‌​hangedReceiver mLocationTimeZoneC‌​hangedReceiver = new LocationTimeZoneC‌​hangedReceiver()
NetworkChangedReceiver mNetworkChangedReceiver = new NetworkChangedReceiver()
public void onCreate()
{
registerReceiver(mLocationTimeZoneChangedReceiver, new IntentFilter(Intent.ACTION_LOCALE_CHANGED));
registerReceiver(mLocationTimeZoneC‌​hangedReceiver, new IntentFilter(Intent.ACTION_TIMEZONE_CHANGED));
registerReceiver(mNetworkChangedReceiver, new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));
}
}
BootCompletedReceiver:
public class BootCompletedReceiver extends BroadcastReceiver
{
public void onReceive(Context context, Intent intent){}
}
MyApplication:
public class MyApplication extends Application
{
ServiceConnection mServiceConnection = new ServiceConnection() { anonymous class...}
public void onCreate()
{
bindService(new Intent(this, MyService.class), mServiceConnection,Context.BIND_AUTO_CREATE);
}
}
Edited:
Edited code for Plinio.Santos.
It's a big app with many moving parts so at best I can post small code snippets.
Following are the steps I am following for testing:
Push app via Eclipse,
test that network change receiver is working
leave wifi off
Now restart the device
wait for the process to start and turn on wifi.
I believe that the service is not started or bound due errors. Unfortunately I can not say it for sure without all binding/starting code.
Anyway, you can see bellow a code that worked fine after I rebooted (the app started, registered the receiver and is receiving the CONNECTIVITY_CHANGED broadcast.
AndroidManifest.xml:
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<receiver android:name=".TestReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<service
android:name=".TestService"
android:exported="true" />
Receiver class:
public class TestReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
if (intent != null && Intent.ACTION_BOOT_COMPLETED.equals(intent.getAction())) {
Toast.makeText(context, "Intent.ACTION_BOOT_COMPLETED receiverd !", Toast.LENGTH_SHORT).show();
context.startService(new Intent(context, TestService.class));
}
}
}
Service class:
public class TestService extends Service {
private BroadcastReceiver mConnectivityChangedReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
if (intent != null && ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) {
Toast.makeText(context, "ConnectivityManager.CONNECTIVITY_ACTION receiverd !", Toast.LENGTH_SHORT).show();
}
}
};
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate() {
super.onCreate();
registerReceiver(mConnectivityChangedReceiver, new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));
}
}

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