How call an Intent switch from a c2dm message reciever - android

I have a simple c2dm message receiver class which is called whenever the device receives a c2dm message. In one case, I want to have the message receiver class perform an intent switch to load a different activity. Android throws an exception when this happens
01-07 02:28:52.480: E/AndroidRuntime(440): Caused by: android.util.AndroidRuntimeException: Calling startActivity() from outside of an Activity context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?
I guess I could investigate this flag suggested in the exception, but i'm wondering if maybe i'm taking the wrong approach and there is a better way to do this?
c2dm message receiver class:
public class C2DMMessageReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
Log.w("C2DM", "Message Receiver called");
if ("com.google.android.c2dm.intent.RECEIVE".equals(action)) {
Log.w("C2DM", "Received message");
final String payload = intent.getStringExtra("payload");
Log.d("C2DM", "dmControl: payload = " + payload);
// Message handling
if(payload.equals("RdyRoom::join")) {
Intent rIntent = new Intent(context.getApplicationContext(), ReadyRoomActivity.class);
context.startActivity(rIntent);
}
}
}
}
Thanks for any ideas

Add this to your intent
Intent.FLAG_ACTIVITY_NEW_TASK

Related

BroadcastReceiver in IntentService in WakefulBroadcastReceiver does not always work

So, I have this problem.
I'm using a dependency project that is some kind of GCM notification parser. It's a bit poorly written, however I'm forced to use it, becase of work related reasons. Anyways:
The main service (that extends IntentService) is launched with WakefulBroadcastReceiver.
After it receives message from GCM I does some magic and sends it to the main App using broadcast.
In main app I'm constantly running service with another BroadcastReceiver that catches messages and saves everything in database etc.
Why is it so complicated? Firstly - originally it was someone else's project and now I'm trying to fix bugs. Secondly - I have no access from dependency to the main application project so I pass messages with broadcasts.
And now, the fun part. I need to filter whether I want to show notification or not. While sending a message to my main AppService I check it with the history of previous messages and then I decide if I need to show this message to User or not. However, no matter what my decision is, my dependency still shows my notification.
So I added yet another broadcast, when after successful validation I launch in my dependency notification building method.
Here is the code:
My WakefulBroadcastReceiver:
public class GcmBroadcastReceiver extends WakefulBroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
ComponentName comp = new ComponentName(context.getPackageName(), PushService.class.getName());
startWakefulService(context, (intent.setComponent(comp)));
setResultCode(Activity.RESULT_OK);
}
}
Here is my Depencency service
public NotificationCheckerReceiver notificationCheckerReceiver;
...
#Override
protected void onHandleIntent(Intent intent) {
Bundle extras = intent.getExtras();
GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);
String messageType = gcm.getMessageType(intent);
if (!extras.isEmpty()) {
if (GoogleCloudMessaging.MESSAGE_TYPE_MESSAGE.equals(messageType)) {
//Launch my "approval" receiving broadcast
launchBroadcastReceiver(extras, intent);
//send broadcast to main app with the message we will parse etc.
sendSmsBroadcast(...));
}
}
}
#Override
public void onDestroy() {
unregisterReceiver(notificationCheckerReceiver);
super.onDestroy();
}
//Launch to build notification
public void showNotification(Bundle extras){
...
//Basic notification builder
}
//Receive broadcast from DB if notification was already in the DB
private void launchBroadcastReceiver(Bundle extras, Intent intent){
Log.d(TAG, "Broadcast receiver loaded");
notificationCheckerReceiver = new NotificationCheckerReceiver(new NotiFlag() {
#Override
public void onReceiveApproval(Boolean flag, Intent intent, Bundle extras) {
Log.d(TAG, "Approved notification show");
showNotification(extras);
JustPushGcmBroadcastReceiver.completeWakefulIntent(intent);
}
}, intent, extras);
registerReceiver(notificationCheckerReceiver, new IntentFilter(notificationCheckerReceiver.INTENT_EVENT_NAME));
}
public void sendSmsBroadcast(String message, boolean isAppOnScreen){
...
//This works
}
}
and my "faulty" receiver:
public class NotificationCheckerReceiver extends BroadcastReceiver{
private final String TAG = getClass().getSimpleName();
public static final String INTENT_EVENT_NAME = "NOTIFLAG";
public static final String INTENT_FLAG_KEY = "FLAG";
Intent intent;
Bundle extras;
NotiFlag nofiFlag;
public NotificationCheckerReceiver(NotiFlag nofiFlag, Intent intent, Bundle extras){
Log.d(TAG, "Launched constructor NotificationChecker");
this.nofiFlag = nofiFlag;
this.intent = intent;
this.extras = extras;
}
#Override
public void onReceive(Context context, Intent intent) {
Log.d(TAG, "Launched onReceive");
Boolean bool = intent.getExtras().getBoolean(INTENT_FLAG_KEY);
Log.d(TAG, "___________Broadcast receiver got something and it is intent: "+bool);
if (bool != false) {
nofiFlag.onReceiveApproval(bool, this.intent, this.extras);
}
}
}
and lastly, what I'm sending from my main service:
public void sendNotificationCheckerBroadcast(Boolean message){
Intent flag = new Intent(NotificationCheckerReceiver.INTENT_EVENT_NAME);
flag.putExtra(NotificationCheckerReceiver.INTENT_FLAG_KEY, message);
DvLogs.d(TAG, "__________Sending intent: "+message);
sendBroadcast(flag);
}
What happens is that eveything to the point where I launch "sendNotificationCheckerBroadcast()". I get that I'm sending some kind of boolean... and that's it.
The funny part is: it SOMETIMES works.
I don't know why, but when for some reason it launches - everything is awesome.
EDIT:
When it works, because sometimes it does, I have this error:
01-15 11:20:22.204 3234-3234/pl.digitalvirgo.lafarge E/ActivityThread﹕ Service com.example.name.PushService has leaked IntentReceiver com.example.name.NotificationCheckerReceiver#43042b50 that was originally registered here. Are you missing a call to unregisterReceiver()?
android.app.IntentReceiverLeaked: Service com.example.name.PushService has leaked IntentReceiver com.example.name.NotificationCheckerReceiver#43042b50 that was originally registered here. Are you missing a call to unregisterReceiver()?
at android.app.LoadedApk$ReceiverDispatcher.<init>(LoadedApk.java:814)
at android.app.LoadedApk.getReceiverDispatcher(LoadedApk.java:610)
at android.app.ContextImpl.registerReceiverInternal(ContextImpl.java:1772)
at android.app.ContextImpl.registerReceiver(ContextImpl.java:1752)
at android.app.ContextImpl.registerReceiver(ContextImpl.java:1746)
at android.content.ContextWrapper.registerReceiver(ContextWrapper.java:479)
at com.example.name.PushService.launchBroadcastReceiver(Unknown Source)
at com.example.name.PushService.onHandleIntent(Unknown Source)
at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:65)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.os.HandlerThread.run(HandlerThread.java:61)
Maybe it's somehow related?
I know that I should unRegister this Receiver ... somewhere. Tried onStop, but as we can see - no success.
Edit2:
Weird.
I believe, that the problem is in onStop() method. Probably it's called too early (?) so my Receiver has no chance to work. When I launch app without unRegister everything works. Of course I get bug above, but still... it's something.
Any ideas guys?
Well. The problem was inside the idea of IntentService.
intentService kills itself after onHandleIntent() method.
So the solution for this problem is to change IntentService into Service remembering to handle stopping this thing.

Information from BroadcastReceiver to specific Activity via external class

I have "ComposeActivity" which calls the "SendSMS" method after onClick, which than calls metod in SMS class. I had also registered two BroadcastReceiver: SmsDeliveredReceiver and SmsSentReceiver, similar to: https://stackoverflow.com/a/17164931/1888738. How can I inform ComposeActivity, that sms was succesfullly sent, and that activity can clean some EditText's, and maybe show crouton with information that sms was sent or not(and why)? My codes: http://pastebin.com/LNRuSeBu
If you have receivers to handle when the SMS messages are sent or not sent. You could modify the onReceive of both of the receivers to send and intent to the ComposeActivity by creating an intent and calling intent.setComponent to specify where the intent should go. with some data that tells the ComposeActivity the result of trying to send the message.
Update:
public void onReceive(Context context, Intent arg1) {
Intent i = new Intent(action);
i.setComponent(new ComponentName("com.mypackage.compose","ComposeActivity"));
switch (getResultCode()) {
case Activity.RESULT_OK:
Log.d(getClass().getSimpleName(), "SMS delivered");
intent.setAction("com.mypackage.compose.SMS_SENT"); // String you define to match the intent-filter of ComposeActivity.
break;
case Activity.RESULT_CANCELED:
Log.d(getClass().getSimpleName(), "SMS not delivered");
intent.setAction("com.mypackage.compose.SMS_FAILED"); // String you define to match the intent-filter of ComposeActivity.
break;
}
startActivity(intent); // you may not necessarily have to call startActivity but call whatever method you need to to deliver the intent.
}
At that point it should just be matter of addind an intent-filter and a receiver to your compose activity either via the manifest or programatically. Your call. The strings I used were made up but you could pick an exiting intent action string or declare strings that you use in the intent filter. Again up to you. May also be helpful to look at questions about sending explicit intents to components like Android explicit intent with target component
or looking at the android docs.
Ok, after 5 hours of trying, I've already solved this:
in BroadcastReceiver in onReceive:
Intent intent = new Intent();
intent.setAction("SOMEACTION");
context.sendBroadcast(intent);
in Activity:
public BroadcastReceiver receiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals("SOMEACTION")) {
Log.d(TAG, "Sent");
}
}
};
and in onCreate Activity I registered BroadcastReceiver:
registerReceiver(receiver, new IntentFilter("SOMEACTION"));
Thats all...

How do i get data from the gcm?

Can someone show me the hierarchy that stands behind the process when I'm getting a new data from the GCM? The process that happened only in the client. Example: First the data is getting to the displayMessage function in CommonUtilities class. Seconds the data is transmitted to the onMessage function in GCMIntentService class, and so on.
Thanks!
private final BroadcastReceiver mHandleMessageReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
String newMessage = intent.getExtras().getString(EXTRA_MESSAGE);
// Waking up mobile if it is sleeping
WakeLocker.acquire(getApplicationContext());
// Showing received message
lblMessage.append(newMessage + "\n");
Toast.makeText(getApplicationContext(), "New Message: " + newMessage, Toast.LENGTH_LONG).show();
// Releasing wake lock
WakeLocker.release();
}
};
If all the process with registering the device and getting the registrationId is passes as it should be, getting the data in your onMessage() should be something similar to this :
#Override
protected void onMessage(Context arg0, Intent intent) {
Log.d(TAG, "MESSAGE RECEIVED : "+intent.getExtras().toString());
String action = intent.getStringExtra("action");
int extra = 0;
try {
extra = Integer.parseInt(intent.getStringExtra("action_id"));
} catch (Exception e){
/* ignore */
}
String message = intent.getStringExtra("message");
generateNotification(getApplicationContext(), message, action, extra);
}
Of course this is in my app, the keys which you will use to get the right data depends on what kind of data is sending your server to the client device. And after receiving this portion of data you can do whatever you like with it, maybe create a notification and alert the user about the message.
Edit :
If you want to show some kind of message in your activity using BroadcastReceiver you can do something like this : In your onMessage after receiving the message send broadcastIntent
Intent intent = new Intent("messageReceived");
sendBroadcast(intent);
and add
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(messageReceived);
to your activity and register your broadcast receiver like :
registerReceiver(myReceiver, intentFilter);
and handler the message in your receiver like this :
public void onReceive(Context context, Intent intent) {
if(intent.getAction().equals("messageReceived")) {
// Do your stuff here.
}
}

ANDROID - Launch other application from a BroadcastReceiver

I need to launch/open one installed apk in my device from a BroadcastReceiver.
Here is the code:
public class C2DMMessageReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
Log.w("C2DM", "Message Receiver called");
if ("com.google.android.c2dm.intent.RECEIVE".equals(action)) {
Log.w("C2DM", "Received message");
ComponentName toLaunch = new ComponentName("es.mypackage","es.mypackage.myapplication");
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
intent.setComponent(toLaunch);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_CLEAR_TOP);
context.startActivity(intent);
My device receives the broadcast but fails with an unexpected problem.
The code to launch other apk works fine in other part of the application.
Is possible to launch other application from a broadcast?
Thank you very much.
As per my experience , you can not start activity from the C2DM Receiver, I found work around for that, Create one service and start activity from that service, stop service after you start the activity.
Thank You,

Passing Data from Broadcast Receiver to another Activity

Hi I've been having an issue with Broadcast Receivers and passing information to another activity. I'm trying to create an application that will capture incoming SMS messages, look for a website in the text, then pop up an Alert Dialog box asking if the user wants to go to the website.
public class TextReceiver extends BroadcastReceiver{
public void onReceive(Context context, Intent intent)
{
// .. other code that
// sets received SMS into message
Toast toast = Toast.makeText(context,
"Received Text: " + message.getMessageBody(), Toast.LENGTH_LONG);
toast.show();
}
So that code works fine, receive a text it pops up a toast with the message. The toast is useless but it shows the receiver works. But I want to communicate with an activity to show an Alert Dialog and start up a webView. I already programmed the code that will take a string search for the website and open the webView. Is it possible to get the string from the broadcast receiver and do something like this?:
public class ReceiveText extends Activity{
public void onCreate(Bundle savedInstanceState) {
// Somehow pass the string from the receiver into this activity,
//stored in variable messages
findOpen(messages);
// is that possible?
}
public class findOpen(string messages){
// do stuff ... open alert...open site if OK
}
So basically I just want to pass a string from a Broadcast Receiver to another activity that will use that string. The rest of the code is basically in place all I need is that string... I'm new to this and Java and any help would be much appreciated. Thanks
Instantiate a BroadcastReceiver in the activity you want to get your data to, for example:
private BroadcastReceiver mServiceReceiver = new BroadcastReceiver(){
#Override
public void onReceive(Context context, Intent intent)
{
//Extract your data - better to use constants...
String IncomingSms=intent.getStringExtra("incomingSms");//
String phoneNumber=intent.getStringExtra("incomingPhoneNumber");
}
};
Unregister your receiver on onPause():
#Override
protected void onPause() {
super.onPause();
try {
if(mServiceReceiver != null){
unregisterReceiver(mServiceReceiver);
}
} catch (Exception e) {
e.printStackTrace();
}
}
Register it on onResume():
protected void onResume() {
super.onResume();
IntentFilter filter = new IntentFilter();
filter.addAction("android.intent.action.SmsReceiver");
registerReceiver(mServiceReceiver , filter);
}
Broadcast your data from the service via an Intent, for Example:
Intent i = new Intent("android.intent.action.SmsReceiver").putExtra("incomingSms", message);
i.putExtra("incomingPhoneNumber", phoneNumber);
context.sendBroadcast(i);
and that's it! goodLuck!
If you have your activity named ReceiveText, then in your BroadcastReceiver, you should do the following:
Intent i = new Intent(context, ReceiveText.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.putExtra("message", message.getMessageBody());
context.startActivity(i);
Then, in your activity, you will need to getExtra as so:
Intent intent = getIntent();
String message = intent.getStringExtra("message");
And then you will use message as you need.
If you simply want the ReceiveText activity to show the message as a dialog, declare <activity android:theme="#android:style/Theme.Dialog" /> in your manifest for ReceiveText and then set the message to a textview in the activity.
EDIT: This restarts your activity. this answer is likely a better solution for most people.
We can send the data from onReceive to another activity using LocalBroadcastManager.
It means you are again broadcasting the data using the context
#Override
public void onReceive(Context context, Intent intent) {
Log.d("Broadcast", "wifi ConnectivityReceiver");
Bundle extras = intent.getExtras();
Intent intent = new Intent("broadCastName");
// Data you need to pass to another activity
intent .putExtra("message", extras.getString(Config.MESSAGE_KEY));
context.sendBroadcast(intent );
}

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