Android :: Android - How To Share Code Between Projects Signed With Same Certificate
Apr 27, 2010
In Android documentation concerning code signing we can read: "By signing multiple applications with the same certificate and using signature-based permissions checks, your applications can share code and data in a secure manner." How exactly such code sharing can be done? Is it possible to release main application and multiple exchangeable plugins then discover them at runtime? What does source code looks like and what are advantages over "standard" intents calls from/to different APK packages?
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Jan 25, 2010
Anyone else experiencing this problem or know of a solution? I have a Digicert signed https certificate that is throwing an SSLException (Not trusted server certificate). This doesn't make any sense as Digicert is a recognized certificate authority. I can connect to my https url without a problem via IE, Firefox, and Safari so they appear to have no issue with the certificate. Here's the code I'm using. Very simple stuff......................
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Apr 29, 2010
I need to do is download some basic text-based and image files from a web server that has a self-signed SSL certificate. I have been trying to figure out how to use HttpClient to do this, but getting the SSL to work is a nightmare that seems to be way too much trouble for such a simple task. Is there a better way to perform these file downloads? Perhaps through a WebView or Browser feature? Reinventing the wheel of making a simple HTTPS GET request is a major pain, and is significantly holding up my development schedule.
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Jun 22, 2009
I just got my new HTC Magic ?Maybe a very cool phone? I have a serious problem that I hope someone can help me with or maybe lead me in some direction. I want to sync with my companies Exchange server (exchange 2007) but every time I try I get this error message: ?Error: failed to create account. Please try again later? any ideas? I have been searching the web for a week now ? but no luck. Maybe the problem is related to a certificate problem since we are using a self-signed root certificate and I am not able to import it (like on a Iphone or MS WinMoblie) Maybe someone knows how to import a root-certificate?
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Sep 21, 2010
I have looked into various posts about how to retrieve something via HTTPS on Android, from a server that uses a self-signed certificate. However, none of them seem to work - they all fail to remove the "javax.net.ssl.SSLException: Not trusted server certificate" message. It is not an option to modify the server to have a trusted certificate, and it is also not an option to make the server certificate match the server's IP address. Note, that the server will not have a DNS name, it will only have an IP-address. The GET request looks something like this:
I am fully aware that this solution is prone to man-in-the-middle attacks etc. So, the solution must ignore the lack of trust in the certificate, and ignore the hostname mismatch. Does anybody know the code, that does this, using Java for Android? There are plenty of attempts to explain this on stackoverflow.com, and plenty of code snippets, but they don't seem to work, and nobody has provided one block of code that solves this, as far as I can see. It would be interesting to know if somebody really solved this, or if Android simply blocks certificates that are not trusted.
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Jul 16, 2010
I have a self signed server certificate (cert.pem) and need to enable it for SSL sockets in an Android application. Ideally I'd like to package the code as .jar file and not need an external certificate file (i.e. include it into the code). With this code I can accept all certificates, which is not what I want: SSLContext sc = SSLContext.getInstance("TLS"); sc.init(null, new TrustManager [] { new MyTrustManager() }, new SecureRandom());
Do I need to add the certificate to a custom KeyManager or the custom TrustManager? One problem I've encountered is that Android does not accept JKS keystores (KeyStore.getDefaultType() returns "BKS"): "java.security.KeyStoreException: KeyStore JKS implementation not found"
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Oct 23, 2010
I have several projects which contain the same strings. Is there a way to share the strings.xml file between projects? I have a library project where I put shared .java code which has a strings.xml, but is the data in the library strings.xml added to the including project's strings.xml at build time?
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Jul 27, 2010
I have 2 android applications that share 95% of their resources, layouts, strings etc. only a few jpg's are different.
How can I share resources between the different Eclipse Android projects, so as to avoid resource duplication ?
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Mar 30, 2010
I'd like to be able to get the MD5 fingerprint of the certificate associated with my app (regardless of whether it's the debug cert or the release cert). You're probably aware that in order to get a Google Maps API key, you need to provide them with the certificate fingerprint of your app so that they can match the key with the fingerprint when you use it so as to ensure it's "really you". I've got a similar situation in which I'd like to make requests against a URL (my server) and would like to pass my app's fingerprint as part of the request. I've got no clue which classes I should be looking at.
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Jan 20, 2009
I have two projects that share classes in a third project. Eclipse happily allows me to reference these external classes when I am developing the two dependant projects (as long as the Java Build Path is set up right), but when I try launching the dependant projects, the external classfiles are not copied into the .apk for some reason, so at runtime I get unsatisfied link errors. I don't want to have to maintain multiple copies of the same source file, or even have a copy of these external classfiles in the dependant projects. I also want to avoid adding an extra build step where I build the external classfiles, package them up in a .jar file and include them in the dependant projects. How can I get the Android SDK to simply put a copy of any referenced (non-SDK, non-project) external classes in the .apk at build time?
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Jul 13, 2010
As far as I understand, all the built-in standard apps like (email, music, calendar etc) are built using the same API. So I should be able to import a project like mail / music etc without checking out the full source repository of android. I'v been trying that but I am getting compilation problems like class resolve failure. Am I doing it wrong? What do I have to do to import a project in eclipse without compilation error. I am interested in the Music application.I have setup the latest android eclipse plugin and run test applications with it, so my setup is OK.
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Oct 8, 2010
Is it possible to share a Java application across several mobile platforms (Android, BlackBerry, Symbian, etc) regarding of Android is a Java SE (almost compliant), BlackBerry is JavaME, etc?
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Jun 10, 2010
I'm doing some initial research on smart phone development, and I noticed that Android and Windows Mobile both support c++ for application development. I was curious if anyone had any experience trying to manage shared files between both Android and Windows Mobile, and to what extent that code can be shared? e.g. no user interface can be shared, but web service and business logic classes can be shared, etc.
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Aug 1, 2009
I must to new a thread. I know how to implement this issue by Menuifest.xml, see also: http://groups.google.com/group/android-developers/browse_thread/threa...
But my question is how to add share menu of Gallery by java code not Menuifest.xml. My code is as below:
code:.........
But registerReceiver always return null, and there is no menu added to Gallery's Share.
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Aug 1, 2009
I know how to implement this issue by Menuifest.xml, see also:
Google Android Developer Group related issue
But my question is how to add share menu of Gallery by java code not Menuifest.xml.
My code is as below:
CODE:........
But registerReceiver always return null, and there is no menu added to Gallery's Share.
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Nov 11, 2010
I have an Android library project that makes calls to PreferencesManager.getDefaultSharedPreferences.
I have 2 version of my app, paid/free, and they are not able to access the preferences stored by the library code.
Can someone tell me the right way to store values in SharedPreferences in library code and have the values available to projects that include the library?
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Oct 22, 2010
Can anyone recommend an example or post that shows how to implement a share via SMS/Email/Facebook/Twitter kind of thing for your app?
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Jan 5, 2010
I am just wondering if anyone would like to share pics of how you have you 7 screens setup.
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Feb 23, 2010
I do not have the keystore that I used when I first created the app and I am wondering if I can create a new certificate using the same details that I used to create the earlier certificate. I have the details available with me.If I do so and update the app using this certificate, will the users get an update notification on their device?
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May 28, 2009
I had configure a Tomcat webserver with SSL and client autification. So I need a clienKey.p12 File to visit the site. If I import the key into Firefox, it works fine.
So I tried to develop a Client from "normal" Java. That works:
CODE:..........
Now I try to develope a Client into Android and I am getting crazy....
Here my two Android implementation:
CODE:...........
I always geht the following Exception:
CODE:................
But the key is the same that I use for the "normal" java Client and for the import into firefox. So the key is valid. But it is signed by me... I don't want to sign it by a commercial Company like verisign.
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May 21, 2010
How do I sign an APK with more than one certificate, so that I can do this when I publish to the Android Market...
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Jul 16, 2010
If I have an apk can I remove the current signing and some how resign it with a different .keystore file and still have the application install?
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Nov 17, 2010
Is there any way to create an X509 certificate on the android device?
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Aug 20, 2010
I am receiving this exception, when I try to access a secure site in my App. I am using DefaultHttpClient & BasicHttpParams classes for Http communication..........................
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Sep 14, 2010
My application redirects its users to a known domain (secure.gate2shop.com) that its root certificate doesn't exist on Android devices. Normal PC browsers have no problem accessing the site, but Android browser displays to the user that the certificate is untrusted. I don't want that behavior, not even once, so I'm looking for a way to install this certificate on the device from my app.
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Apr 15, 2009
I have an application that I want to be able to use the userid: android:sharedUserId="android.uid.system", I need to sign the .apk file with the same certificate as the built in system applications, such as the 'Settings' application. I've located the keystore file in my build directory which is: cacerts.bks, and I have the password for this. What I seem to be missing in order to sign my .apk file is the alias fo the keystore. Does anyone know what the alias is? Or is there an easier way to do this that I'm missing.I know this not a standard thing to do, and is perhaps a hack, but I have a client requirement to meet.
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Nov 13, 2010
keytool -list -alias androiddebugkey -keystore ~/.android/debug.keystore. -storepass android -keypass android I'm not sure how I can sign my debugkey so that I can use Google Maps. I have verified in Eclipse that this is where my debugkey is stored.
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Dec 8, 2009
I just published my first application to the market and the "Just in" display show my icon and app name, but under the app name is shows my birth certificate name! How can I change this? Is it something I am missing in my manifest? I'm sure my mom would it; but me -- not so much.
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Sep 19, 2009
My debug.keystore certificate has expired. Does anyone know how to force Android to regenerate either certificate or the whole directory under
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Feb 23, 2010
I want to connect to a server using ssl/https connection. During handshake between client and the server, I want to have server certificate authentication as well as client certificate authentication. The server certificate authentication is successful. But I don't know how to send client certificate to server for authentication, during the handshake.
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