Android Tutorial Android push notification (C2DM) framework and tutorial

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salmander

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Erel said:
You said that you were able to run it with the b4aserver url, is this correct?
Click to expand...
Yes, when i followed the tutorial first time, it was working fine. Now i have created a new project and trying to follow tutorial but at the moment the service is not even starting. I have pasted my code, can you please tell me wat m i missing?

Thanks.
 
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salmander

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One quick question, can I use the same email address to register for more than one application packages? For e.g: I have used "abc@gmail.com" for "com.test.project1" to register for C2DM. So, if I want to use C2DM in another project (com.test.project2), do I have to register again using "abc@gmail.com" and "com.test.project2"? Or do I have to make another gmail ID?
 
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salmander

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Erel said:
I believe that you can use the same gmail account with multiple packages.
Click to expand...
Thank you Erel. I have just signed up for different packages. I will confirm here once I test using different packages.
 
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cbal03

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Unexpected result from "GetAll"

Hi guys,
I have the app successfully registering and I set the variables in the config.txt file. When I use the desktop commandline as shown.

Sent:
D:\MY Apps\Basic4Android\_tutorial files\C2DM\desk_ext\Desktop>java -cp b4a_c2dm.jar anywheresoftware.b4a.c2dm.C2DM send DEVICENAME "this is a test"

Returned:
java.lang.RuntimeException: java.io.IOException: Server returned HTTP response code: 401 for URL: https://android.apis.google.com/c2dm/send
at anywheresoftware.b4a.c2dm.C2DM.sendMessageTo(C2DM.java:66)
at anywheresoftware.b4a.c2dm.C2DM.sendMessageTo(C2DM.java:63)
at anywheresoftware.b4a.c2dm.C2DM.main(C2DM.java:228)


So I run the GetAll command and I get the raw text - php script from my server in the command window including names and passwords of the database??

Has anyone seen this before?

ok.. so I found that the php script does not conform to my php installation rules. e.g. '<?php' is a required beginning tag instead of '<?'. After correcting this, i get my one device name registered for the GetAll command.


I still haven't been able to track why I get error 401 from C2DM when sending messages to my device.

RETURNED:
java.lang.RuntimeException: java.io.IOException: Server returned HTTP response code: 401 for URL: https://android.apis.google.com/c2dm/send
at anywheresoftware.b4a.c2dm.C2DM.sendMessageTo(C2DM.java:66)
at anywheresoftware.b4a.c2dm.C2DM.sendMessageTo(C2DM.java:63)
at anywheresoftware.b4a.c2dm.C2DM.main(C2DM.java:228)

Thanks for any info.

I have also moved the tool to a directory which doesn't contain spaces. e.g. c:\C2DM
 
Last edited:
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salmander

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I have figured out that in v1.8 you do not need to edit the manifest file manually. All you need to do is write this code in the inbuilt manifest editor.(Project>Manifest Editor).
B4X: 
'C2DM Permissions
AddManifestText(<permission android:name="$PACKAGE$.permission.C2D_MESSAGE" android:protectionLevel="signature" />)
AddPermission($PACKAGE$.permission.C2D_MESSAGE)
AddPermission(com.google.android.c2dm.permission.RECEIVE)
' Push Service Receiver Attribute
SetReceiverAttribute(PushService, android:permission, "com.google.android.c2dm.permission.SEND")
' Service Receiver Text
AddReceiverText(PushService,
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<category android:name="$PACKAGE$" />
</intent-filter>
<intent-filter>
<action android:name="com.google.android.c2dm.intent.REGISTRATION" />
<category android:name="$PACKAGE$" />
</intent-filter>)
There is no need to change the package name or add anything, just add this as it is and it should be good to go.
 
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cbal03

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Thanks for your quick reply Erel.
I did as you suggested and I get the same exact error while using the commandline utility.

I successfully registered my device while pointed to b4a server.

Thank you too salmander.
I did as you sugested and the app timed out after the changes (would not register). I'm not very familiar with the new manifest tool so I deleted the new manifest file, renamed the working backup copy and checked 'do not overwrite' and the app successfully registered again.


This is what I have found so far:
I know my username and password are correct in the config file because I manually sent them to google via the browser and received a sensible response.

sent:
https://www.google.com/accounts/ClientLogin?service=ac2dm&Email=MYEMAIL&Passwd=MYPASSWORD

received:
SID=DQAAALw...
LSID=DQAAAL0...
Auth=DQAAALA...

This led me to believe that my java version you are calling in your batch file might be incorrect.
So I go to Java's webpage and perform a check. I receive the response:
Verified Java Version
Congratulations!
You have the recommended Java installed (1.7.0_01).

Since this version is the latest and should be backwards compatible I 'assume' all is ok here.

I know the board_url and server_password in the config file are correct because if i purposely change the password and then run the tool I get this response:
D:\C2DM>java -cp b4a_c2dm.jar anywheresoftware.b4a.c2dm.C2DM Send MYDEVICE "this is a test"
java.lang.RuntimeException: Wrong server_password.
at anywheresoftware.b4a.c2dm.C2DM.getIdForName(C2DM.java:105)
at anywheresoftware.b4a.c2dm.C2DM.sendMessageTo(C2DM.java:51)
at anywheresoftware.b4a.c2dm.C2DM.main(C2DM.java:228)

I know that my device name is correct because if I change it slightly and then run the tool I get this response:
D:\C2DM>java -cp b4a_c2dm.jar anywheresoftware.b4a.c2dm.C2DM Send WRONGDEVICENAME "this is a test"
java.lang.RuntimeException: No id found for name: WRONGDEVICENAME
at anywheresoftware.b4a.c2dm.C2DM.getIdForName(C2DM.java:100)
at anywheresoftware.b4a.c2dm.C2DM.sendMessageTo(C2DM.java:51)
at anywheresoftware.b4a.c2dm.C2DM.main(C2DM.java:228)

I really appreciate the time you guys are spending. B4A is an awesome IDE and this forum is packed with great information. I'll definitely post the cure if I can find it (unless someone beats me to it).
 
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salmander

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If I am not mistaken, B4A requires java 1.6 to run properly. I don't know if that could be the problem for the desktop java app.
 
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salmander

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"javac: target release 1.5 conflicts with default source release 1.7" - Currently Basic4android requires Java 6. It will not work with Java 7. Both versions can be installed on the same computer."
source: "http://www.b4x.com/android/downloads.html"
 
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cbal03

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Did you beat me to it?!?

I'll roll it back and see. Thanks!
 
C

cbal03

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B4A runs fine. I remember having to point B4A to a 1.6 java installation when I set it up via Tools > Configure Paths.

I wonder if I need to set an env var to the 1.6 (or other version) location and then edit the commandline tool to use that var.

something like:
newjavavar -cp b4a_c2dm.jar anywheresoftware.b4a.c2dm.C2DM %*

I have several versions installed since I run other IDEs that require them.
 
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salmander

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No I don't think, you would need to set any environment variables to set up b4a. The installation is pretty straight forward, just follow the official guide.
 
C

cbal03

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Ok so I validated my java version by forcing the commandline utility to use 3 different versions.

First I read the current version in use:
D:\C2DM>java -version

Result:
java version "1.7.0_01"
Java(TM) SE Runtime Environment (build 1.7.0_01-b08)
Java HotSpot(TM) Client VM (build 21.1-b02, mixed mode, sharing)

java version "1.7.0_01" allows for the result from the commandline utility:
D:\C2DM>java -cp b4a_c2dm.jar anywheresoftware.b4a.c2dm.C2DM send DEVICENAME "this is a test"

Result:
java.lang.RuntimeException: java.io.IOException: Server returned HTTP response code: 401 for URL: https://android.apis.google.com/c2dm/send
at anywheresoftware.b4a.c2dm.C2DM.sendMessageTo(C2DM.java:66)
at anywheresoftware.b4a.c2dm.C2DM.sendMessageTo(C2DM.java:63)
at anywheresoftware.b4a.c2dm.C2DM.main(C2DM.java:228)

So then I try version 1.6.

D:\C2DM>java -version:1.6 -cp b4a_c2dm.jar anywheresoftware.b4a.c2dm.C2DM send DEVICENAME "this is a test"

Result:
java.lang.RuntimeException: java.io.IOException: Server returned HTTP response code: 401 for URL: https://android.apis.google.com/c2dm/send
at anywheresoftware.b4a.c2dm.C2DM.sendMessageTo(C2DM.java:66)
at anywheresoftware.b4a.c2dm.C2DM.sendMessageTo(C2DM.java:63)
at anywheresoftware.b4a.c2dm.C2DM.main(C2DM.java:228)

So then I try version 1.5.

D:\C2DM>java -version:1.5 -cp b4a_c2dm.jar anywheresoftware.b4a.c2dm.C2DM send DEVICENAME "this is a test"

Result:
Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad version number in .class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)

It appears that version 1.7 and 1.6 are operating the same. So I don't think Java version is at fault here.

I know that the config file is ok because of the responses I get when I make changes to the values.

It would be really nice to see the commandline utility work. It has tons of value for my project.
 
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salmander

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* Make sure you have your gmail id and gmail password in c2dm/desktop/config.txt file for sender_mail_id and sender_mail_password. (This should be the gmail account that you used to signup for c2dm service on google servers.)
* Make sure the board_url in c2dm/desktop/config.txt is of the b4a server (default). This should also be the same for the device/push/PushExample.b4a under BoardUrl process global variable.
* Make sure that DeviceBoardPassword in process globals device/push/PushExample.b4a should be the default value, if you are using the b4a server.
I recommend download the files again and change only package name in manifest file and the gmail address and gmail password in the desktop/config.txt file. And then try running it again. Good Luck mate.
 
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cbal03

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I found the fault and it took a while to prove it since I had to wait on an email.

It appears that when I registered the project (on googles website) name I spelled it incorrectly. I re-registered the project name (ensuring accuracy) using the same account. Just now I was able to test it and I received:

D:\C2DM>java -cp b4a_c2dm.jar anywheresoftware.b4a.c2dm.C2DM send DEVICENAME "hello"
Success: id=0:blah blah blah

From now on I'll write down what I do before entering it into a web form. Especially when I need to use the info later.

In this case the permissions error 401 was correct. There was no permission for the intended device name to receive a message from from a different project name.

Thank you for your time guys. You are doing wonderful things here! I hope this helps others.

oh.. it works on my server here too!
 
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