My android app is not in the app store yet. Is it possible to send my app to someone, and they install it on their device. Something like iphone AdHoc?
Is it possible to send my app to someone, and they install it on their device
Yes, of course. You can share the APK with other people and they can install the application. It's not necessary for the app to be in the Market.
Effective beta apk distribution, getting crashes as well as feedback from early adopter is known problem in android community. To solve this problem we built a platform Zubhium for developers by developers.
Platform will invite users and keep a track of who, when and where downloaded, Also it will followup with users who downloaded beta for feedback. You can view , reply , communicate back with users from platform.
Optionally you can integrate crash reporting services to get crashes during beta. It will provide granular details like network, device info with exception details. It does bunch of other stuff also.
Have look at www.zubhium.com
Starting in May 2013, Google added Beta and Alpha programs to the Developer Console. You can now upload an APK to either channel and interested users (or users belonging to the specified Google+ Communities or Groups) can now get the application from the Market just like a regular app.
Users cannot provide public feedback so you have to provide them an alternative way to contact you.
At any given time, you can promote (or demote) an app to/from beta/alpha or even Production.
Here's how mine looks:
You can email them your APK. Of course, there are several drawbacks to doing this.
There is not any built in copy protection to lock an APK to a single device so a tester could redistribute your application without your consent. This is something that you will need to deal with even once you are using Market to distribute your application. If you select "Copy Protection On", people will still be able to get at your APK as many people have rooted devices and all this option does is influence where the APK is installed. Google advises, "you may also implement your own copy protection scheme" and I think it's prudent.
Add the READ_PHONE_STATE permission to your manifest so you can retrieve the phone's IMEI, send to your server, and determine if a user should be allowed to run your application.
TelephonyManager telephonyManager =
(TelephonyManager)getSystemService(TELEPHONY_SERVICE);
String imei = telephonyManager.getDeviceId();
Your testers will need to enable "Unknown sources" to allow install of non-Market applications.
Assuming your tester uses Google as their email provider, it is important to note that the Android GMail application doesn't handle APK attachments properly. While this might confuse the recipient of your email, there are easy work-arounds:
Yes. Upload it to a website or email the ".apk" file to your friend. Have your friend make sure that the option to allow for "Unknown Sources" on the device is checked (Settings > Applications > Unknown Sources). When your friend downloads the application on their device and clicks to run it, it will be installed and should appear in the applications menu ready to be executed.
Dropbox also works (from this answer).
I used it with an .apk file signed with eclipse's debug certificate. You can find this file in your eclipse project's bin folder (from this answer).