Develop Reference

Android Studio Gradle Error - Protocol Family Unavailable

So I am relatively new to Android dev. and have been getting Android Studio set up on my computers. I have it set up just fine on my Mac. When I downloaded and installed it on my Windows 8.1 desktop the gradle build seems to fail every time. With an error message stating that the Protocol Family Unavailable. I've tried several things including uninstalling and reinstalling Android Studio.
NOTE: I did try what was said to work here Gradle project refresh failed - Protocol family unavailable yet it did not solve the problem for me.

When I used Stunnel I faced this problem and my problem was solved when I disconnented it.
Check too see if you have any Stunnel, Vpn or Proxy connection and if so, disconnect it.

I also had this problem and the referenced thread also didn't work for me.
What did work was setting _JAVA_OPTIONS environment variable to make Java use IPv4.
_JAVA_OPTIONS = -Djava.net.preferIPv4Stack=true
Note that Android Studio sets this variable in the vmoptions file. But for some reason, it isn't used by the Java VM started by Android Studio to run Gradle daemon.
After I did that, everything started to work ok and Gradle could build my project.
I hope it helps.

I run into this problem when my firewall blocked studio64.exe from connecting to the internet. I fixed it by granting access.

You could try to fix it temporarily by disabling your anti-virus software while using Android Studio. I'm not entirely sure it will work, but it's worth a try, it worked for me, though I'm aware-, and agree with that this is far from a permanent fix, but it might be good enough while waiting for a fix from the Android Studio team, at least it will let you keep working!
Hope this helps!

"Run command prompt as administrator - type cmd in the 'search programs and files' text box in the Windows Start menu; right-click and select 'Run as administrator'.
At the command prompt, type
netsh winsock reset
Restart your PC
This worked for me."
I found it in
Android studio "Cannot start internal HTTP server"

My problem was using a VPN on an per-app basis connection mode while Android Studio was blocked.

I solved same problem by disabling antivirus.

for me proxifire.exe was running in background and cause to connection problem, after closing problem gone

This answer is same as first answer in this topic, means first answer is true and works well, but my answer is in detail, i did not set that variable, just turn off proxy.
This error arises due to proxifier running that basically tunnels the computer in ipv6 which is not supported by daemon.
So to overcome this and build project either close the proxifier application from system tray or add the environment variable
_JAVA_OPTIONS= -http://Djava.net.preferIPv4Stack=true

Android studios doesn't update app on mobile device

My problem is that when I ran my app and use my mobile device the app isn't updated with any of the changes I've made to the code. I've checked the 'Android Device Monitor' and it sees my phone. Yesterday I downloaded 'universal adb driver' because I was trying to print a logcat. I thought that downloading this driver despite already having USB google driver might have caused the issuse. I've uninstalled univeral adb driver but the problem persists. Can anybody help me

I know I am late, but if anyone else comes here, run Build>Clean project.
It's a bug in Android studio. That crap is ancient, and still not fixed.

You need to go to Run > Edit configurations... and disable the "Allow parallel run" checkbox at the right top corner of that window, it will even solve the problem that your activity don't run after app build. It's only one solution which was helped to me.

Simply uninstall the application from your mobile device and then run your app again with your device connected and make sure to select the correct device when Android Studio prompts you to.

Try Re-build the gradle. I should work for you. Sometimes if the build id processing and your usb cable is removed or not connected properly, there might be chance to get this issue.
Also, Check the error logs in the studio. They will tell you what exactly you need to do.

Eclipse IDE: Where is Android Remote Device Settings?

I am using the most up-to-date version of Eclipse (and ADT) and have not been able to find where to add a remote android device for debugging. I'm hoping to use YouWave as the AVD emulator is too slow on my PC. In the past I've been able to add a host and port of my own choosing for a remote device though I can no longer find where to do this.
Any help would be much appreciated.

you can't do it from within eclipse. ive been working on a plugin but not ready yet. for now use he command line.
adb connect 192.168.1.5:5555
you will see it from within eclipse.

Hi you can refer to this tutorial they have give how to create a Android remote device and also debugging use it click here

Installing Android

I am having problems installing Android and I would really appreciate your help. My problem is similar to the thread
Installing Android SDK
howeve it seems there people believe it is a problem of Eclipse. It actually is not since when I run the Android SDK Manager(independent from Eclipse at all) the program cant find anything on the repository https://dl-ssl.google.com/android/eclipse
Can anyone tell me what can I do? have they moved? that URL in a browser says 404 error!
Thanks a lot in advance

this could be a firewall issue too. if you work in a big company with high network security, most of the ports closed etc, your android avd might be blocked...
if you work at home, switch the firewall off and give it a go!

Try to use http if https isn't working. It's not safe, but it works.
http://dl-ssl.google.com/android/eclipse

There's a manual option to install adt pluings too: http://developer.android.com/sdk/eclipse-adt.html#installing
But it seems like something has changed at google or is offline

Proxy which requires authentication with Android Emulator

Has anybody managed to get the Android Emulator working behind a proxy that requires authentication?
I've tried setting the -http-proxy argument to
http://DOMAIN/USERNAME:PASSWORD#IP:PORT
but am having no success.
I've tried following the docs to no avail. I've also tried the -verbose-proxy setting but this no longer seems to exist.
Any pointers?

I Managed to do it in the Adndroid 2.2 Emulator.
Go to "Settings" -> "Wireless & Networks" -> "Mobile Networks" -> "Access Point Names" -> "Telkila"
Over there set the proxy host name in the property "Proxy"
and the Proxy port in the property "Port"

It seems like SDK 1.5 onwards, the -http-proxy flag also doesn't work. What did work for me is to boot the android image in the emulator and then once Android is running, go to Home > Menu > Settings > Wireless Controls > Mobile Networks > Access Point Names and then setup the http proxy settings for the default access point.
With the APN proxy settings in place, I can get the emulator's browser to surf the web. However, other stuff like Maps still doesn't work.

I remember having the same problem - After searching on the web, I found this solution - From the command line,
1. > adb shell
2. # sqlite3 /data/data/com.android.providers.settings/databases/settings.db
3. sqlite> INSERT INTO system VALUES(99,’http_proxy', 'proxy:port');
4. sqlite>.exit
EDIT:
Edited answer to reflect the latest version of Android.

Apparently this problems runs only with Android 2.x and Windows.
There is a opened bug here :
http://code.google.com/p/android/issues/detail?id=5508&q=emulator%20proxy&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars

Find the file androidtool.cfg at C:\Documents and Settings\YOUR USER NAME\.android\
Add this line:
http.proxyLogin=USER#PASSWORD
Save the file and try to open the Android SDK.

For setting proxy server we need to set APNS setting. To do this:
Go to Setting
Go to wireless and networks
Go to mobile networks
Go to access point names. Use menu to add new apns
Set Proxy = localhost
Set Port = port that you are using to make proxy server, in my case it is 8989
For setting Name and apn here is the link:
According to your sim card you can see the table

This worked for me: http://code.google.com/p/android/issues/detail?id=5508#c39
Apparently there's a bug in the emulator that forces you to use the IP address of the proxy instead of the name...

Jay, though that would be the ideal place for this information, it has not been updated for 2.1. Below I will list the methods that currently do NOT work for the 2.1 emulator.
The http-post argument does not work for the 2.1 emulator.
Setting a proxy in the APN list within the 2.1 emulator does not work.
Inserting the proxy directly into the system table via sql-lite does not work with 2.1.
In fact, the ONLY way to get the browser to connect to the internet via the emulator that I've found in 2.1, is to NOT use a proxy at all. I really hope this gets fixed soon, for there are many people with this same problem.

Start command prompt.
Go the folder where your emulator is located. In general, it will be in the tools folder of the Android SDK.
Then use the following command:
emulator -avd <avd name> -http-proxy <server>:<proxy>
By using this, we will be able to access the internet using the browser.

Using Android SDK 1.5 emulator with proxy in Eclipse 3.45
Go to Package Explorer -> Right click your Android project ->Run As->Run Configurations.
Under Android Application on the left column, select your project -> on the right column, where you see Android | Target | Common tabs ->
Select Target -> on the bottom “Additional Emulator Command Line Options”->
-http-proxy http://www.gateProxy.com:1080 -debug-proxy http://www.gateProxy.com:1080
->Run/Close.

I've not used the Android Emulator but I have set the $http_proxy environment variable for perl and wget and a few cygwin tools on windows. That might work for you for android, but the slash in the domain name seems like a potential problem.
I know I tried having my domain "GLOBAL" in there, but ended up taking it out and sticking with: http://$USER:password#www-proxy.company.com:80
One problem I run into a lot though is programs that cannot be told to use the proxy for DNS queries too. In cases where they don't I always get a host name not found. I'd like to find a local dns resolver that can use the proxy for all the programs that won't.

I was able to view the traffic with an HTTP sniffer instead of a proxy. I used HTTPScoop, which is a nice little app.
Also the nice thing about using HTTPScoop is that I can also see traffic on my actual device when I turn on internet sharing and have my phone use the wifi from my mac. So this is a good deal for debugging what happens on the phone itself AND the emulator.
This way it doesn't matter what emulator you use, because the sniffer sees the traffic independent of the emulator, device, compiler settings etc.

I will explain all the steps:
Go to settings in Android emulator > Wireless & Network > Mobile network > Access point > Telkilla > and here do necessary settings such as proxy, port, etc.
I think now everything is clear about proxy settings...

For Android2.3.3
Settings->Wireless&Networks->MobileNetworks->AccessPointNames->Telkila->
set the Proxy and the Port here (xx.xx.xx.xx and port)

I had the same problem when i use the following command:
emulator-x86.exe -http-proxy domain\user:password#proxyIP:port -avd MyAVD
I got the proxy authentication error.
Finally, I had to bypass the proxy NTLM authentication by using the Cntlm here:
http://sourceforge.net/projects/cntlm/
And then after simply configuring the cntlm.ini, I use the following command instead:
emulator-x86.exe -http-proxy 127.0.0.1:3128 -avd MyAVD
and it works :)

With the new versions of Android Studio and its emulator, it is an easy task.
Press the emulator's "More" button, and choose the Settings -> Proxy tab. All the needed configurations are there.