It is like it is getting initialized when my computer starts up. Has anyone run into this issue? In such a case, you can do all of the following in order to be assured that your emulator starts working again :.
The number you see in the adb devices list in your case will be one less than the port that adb is finding open. You probably have a process running that is listening on port To get rid of the "offline" device, you will need to find that application and close it or reconfigure it to listen to a different port. Per Brigham"The way that Android detects emulators is by scanning ports starting at port The port number is indicated after the emulator name in this case and The port number to check is the emulator port number plus 1.
So in this case So let's see which program is using these ports. In this case, the ports to check both start with "". So I'll search for ports in use starting with Execute: netstat -a -n -o Select-String "". If you are on Linux or Mac, and assuming the offline device is 'emulator', you can run the following:. This tells me that the process id yours will likely be different is still listening on port You can now kill that process with:.
In my case, I found some process that makes adb not work well. You can try to kill some strange process and run "adb devices" to test. I also had the same issue. I've tried all described here solutions but they didn't help me. Just be aware of this. I finally solved this problem, I had to go to the Developer options from the Settings in the Emulatorthen scrolled down a little, turned on the USB debugging. Instantly my device was recognized online, and I no longer faced that issue.
I tried restarting android studio and emulatorkilling adb process, but those did not work. The "wipe user data" option finally solved my problem. This always works for me! I use windows 8 x64eclipse.One of the strange but welcome spin offs from the Visual Studio launch is that the Microsoft Android emulator is now available as a standalone download.
It works with Visual Studio and Eclipse. The reasoning behind Microsoft creating and supplying an Android emulator isn't clear, but if you are using Android Studio it is well worth downloading and using if you are working under Windows.
In many ways, it is everything that the emulator provided by Google should be and isn't. There are many reasons why it is better. It also works via a remote desktop, which HAXM based emulations don't. If these two advantages aren't enough then the clincher is that it is fast and it has lots of extra, easy to use, features. For example, there is an easy to use control panel that gives you control over the accelerometer, location, network, battery state, camera and SD Card.
While most of these things can be done using the standard emulator this one makes it easy. In addition you also get the ability to restore a backup by just dragging a zip, copy a local folder to the SD card and use a command line interface. The fact that the emulator is part of Visual Studio was about the only thing off-putting about trying it and now you don't need to install Visual Studio. You can simply download and install the emulator on its own. You will need a machine that supports HyperV, but that means most recent machines.
If you have run anything else that makes use of HyperV then it should just work. You also don't have to install or configure HyperV to make it work. Simply download and use the installer.
When it is all installed try the Nexus 7 emulator first as it has reasonably low resource requirements. When you have the emulator installed there are still things that can go wrong. This means if the machine has a lot of USB devices already installed it might not work.
I had to remove everything but the USB mouse and keyboard to make the emulator start on one particular machine. Another problem is that, for some unknown reason, the installer fails to locate the Android SDK. If you run Android Studio and can't see the emulator listed in the drop-down list of devices then you need to edit the registry. Run Regedit and create or edit the key:.Learn more. Wave goodbye to time spent endlessly staring at the Android boot logo.
The x86 emulator boots and runs at nearly the speed of a physical device, making debugging a breeze on graphics-intensive, processor-hungry apps. Also, with Hyper-V compatibility you can run the emulator side-by-side with the Windows Phone Emulator and other Hyper-V VMs, cutting the time you spend switching between platforms.
The range of sensors, including accelerometer, screen orientation, SD card, battery, multi-touch, GPS, camera, audio, and keyboard help you cut the time and expense of debugging functionality on physical devices.
Devices in the market have a diverse set of Android versions, screen sizes, and other hardware properties, making app testing an expensive headache. Our curated set of device profiles represent the most popular hardware in the market, including devices from Samsung, Motorola, Sony, LG, and more. Run against the latest Android versions, including KitKat and Lollipop.
The Visual Studio Emulator for Android fits nicely into your existing Android development environment, with APK and file installation that is as simple as dragging and dropping items on the emulator screen. Debugging to the emulator is as simple as selecting one of our device profiles from the debug target dropdown and hitting the play button. You even receive updates to the emulator alongside other Visual Studio extensions in the Notification Hub.
Take a screenshot of your app for marketing or bug filing. Play back app audio through your computer speakers. Zoom the display to any size. Visual Studio Community Visual Studio Professional Visual Studio Enterprise Skip to main content. This device is not currently supported for these products.
How to Setup Android Emulator using Android Studio
To continue downloading, click here. Visual Studio Emulator for Android. Deploy, test and debug Android apps with our fast, free, and best-of-breed Android emulator Download the emulator.
Validate your app at lightning speed. Powerful simulations.The Android Emulator simulates Android devices on your computer so that you can test your application on a variety of devices and Android API levels without needing to have each physical device.
The emulator provides almost all of the capabilities of a real Android device. You can simulate incoming phone calls and text messages, specify the location of the device, simulate different network speeds, simulate rotation and other hardware sensors, access the Google Play Store, and much more. Testing your app on the emulator is in some ways faster and easier than doing so on a physical device.
For example, you can transfer data faster to the emulator than to a device connected over USB. You can use the emulator manually through its graphical user interface and programmatically through the command line and the emulator console.
For a comparison of the features available through each interface, see Comparison of Android Emulator tools. The Android Emulator has additional requirements beyond the basic system requirements for Android Studiowhich are described below:.
The use of hardware acceleration has additional requirements on Windows and Linux:. To work with Android 8. The Android Emulator was deprecated in June for bit Windows systems. Support for the bit Windows emulator continues until Juneincluding critical bug fixes, but no new features will be added. If you are using the emulator on a bit Windows system, you should plan to migrate to a bit Windows system. If you are using the emulator on a bit Windows system, you can use the SDK Manager to install the latest version of the emulator for bit Windows.Genymotion Offline ADB Android Studio issue/problem fix without restarting the emulator
Each instance of the Android Emulator uses an Android virtual device AVD to specify the Android version and hardware characteristics of the simulated device. To effectively test your app, you should create an AVD that models each device on which your app is designed to run.
Each AVD functions as an independent device, with its own private storage for user data, SD card, and so on. By default, the emulator stores the user data, SD card data, and cache in a directory specific to that AVD. You can run an app from an Android Studio project, or you can run an app that's been installed on the Android Emulator as you would run any app on a device.
In the toolbar, select the AVD that you want to run your app on from the target device drop-down menu. Click Run. If you receive an error or warning message at the top of the dialog, click the link to correct the problem or to get more information.
If you don't have this file, enter the following command in a terminal window:. While the emulator is running, you can run Android Studio projects and choose the emulator as the target device. You can also drag one or more APKs onto the emulator to install them, and then run them.Hassio ffmpeg install
An APK Installer dialog appears. When the installation completes, you can view the app in your apps list. To add a file to the emulated device, drag the file onto the emulator screen. You can view the file from Android Studio using the Device File Exploreror find it from the device using the Downloads or Files app, depending on the device version.
A snapshot is a stored image of an AVD Android Virtual Device that preserves the entire state of the device at the time that it was saved — including OS settings, application state, and user data. You can return to a saved system state by loading a snapshot whenever you choose, saving you the time of waiting for the operating system and applications on the virtual device to restart, as well as saving you the effort of bringing your app back to the state at which you want to resume your testing.
Starting a virtual device by loading a snapshot is much like waking a physical device from a sleep state, as opposed to booting it from a powered-off state. The simplest way to take advantage of snapshots is to use quick-boot snapshots: By default, each AVD is set to automatically save a quick-boot snapshot on exit and load from a quick-boot snapshot on start.
The first time that an AVD starts, it must perform a cold bootjust like powering on a device. If Quick Boot is enabled, all subsequent starts load from the specified snapshot, and the system is restored to the state saved in that snapshot. Snapshots are valid for the system image, AVD configuration, and emulator features with which they are saved.
When you make a change in any of these areas, all snapshots of the affected AVD become invalid.Then I wanted to pull some files from my CM It said: "error: device offline" when trying to access it.
Now, the computers adb key was gone with the userdata folder of the sdk the. But somehow whatever manages the authorization questions thought that this computer was still trusted and did not ask for a new authorization.
I have only 1 computer. On deleting the symlink or recreating the folder it should work. I've ADB problem in bootloader mode : devices not found, list empty. It works fine with phone in normal mode I've upgraded to adb. XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality.
Are you a developer? Terms of Service. Hosted by Leaseweb. MadMan Sep Rohganthompson Sep Suggested Apps. Navigation Gestures Customizable gesture control for any Android device. XDA Labs Labs is an independent app store that gives developers full control over their work.
Substratum The ultimate, most complete theming solution for Android. XDA Feed The best way to get cutting edge news about your device! Thanks Meter : Join Date: Joined: Apr Very useful! Join Date: Joined: Dec OP Member. Join Date: Joined: Jul Junior Member. Thanks Meter : 0. If you give me some Info around the issue, like what you intended to do and if it worked previously, I could help you. FIX adb offline problem.
When you connect a device running Android 4. This security mechanism protects user devices because it ensures that USB debugging and other adb commands cannot be executed unless you're able to unlock the device and acknowledge the dialog. This requires that you have adb version 1. Join Date: Joined: Jan Posted by: admin December 5, Leave a comment.
The problem is when I try to install. How in the world can I get rid of that damn emulator? I heard that if you do a restart, it should clear all the devices, but that does not seem to be working. It is like it is getting initialized when my computer starts up. Has anyone run into this issue? In such a case, you can do all of the following in order to be assured that your emulator starts working again :.
The number you see in the adb devices list in your case will be one less than the port that adb is finding open. You probably have a process running that is listening on port The port number is indicated after the emulator name in this case and The port number to check is the emulator port number plus 1. So in this case Execute: netstat -a -n -o Select-String "". In my case, I found some process that makes adb not work well.Hr standard operating procedures
This tells me that the process id yours will likely be different is still listening on port You can now kill that process with:. There might be more than 1 instances of the same process, make sure to end all of them.
This always works for me! I use windows 8 x64eclipse. Do you have bluestacks installed? Did you try deleting and recreating your AVD? If the emulator is already open or executing it will tell you is offline. You can double check on the Command Line Ubuntu and execute:. You must see your emulator offline, you have to close the running instance of the emulator since the port will show as busy and after that you can run your application. Hope this helps someone. I tried everything but only this one works for my case: Use SDK manager, and reinstall the system image.
Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. This is quite a common question, but none of the solutions appear to work for me. First time asker, so apologies if I get the conventions wrong. I am trying to connect my Galaxy S5 to my computer running Ubuntu I have recently downloaded and installed Android Studio and the SDK and my device is detected when it's connected via USB but the device either appears as 'unauthorized' or 'offline'.
I know I should be expecting the RSA key prompt but this never appears. I have tried it on a separate machine that runs fedora and this works fine with no issues, the promopt appears right away. Therefore I imagine it is not the USB cable that is faulty.
Try killing adb adb kill-server then disable usb debugging and then start adb by adb start-server then enable usb debugging and plug phone again and huh don't let phone sleep between process. I'm assuming my G3 was rejecting a bad key and disallowing my laptop to connect to it via ADB.
ADB saves a key file in one of multiple places on a Windows computer, the first is in the location where adb. If there is no key file when ADB runs, it will generate one automatically. All I had to do was delete the adbkey file there was also a file named "adbkey. Then typing "adb devices" returned my phone's serial number followed by "device" showing it was available. Step 6: Check Devices connected in Run in Android Studio you should be able to see your device listed.
If yes. If you are on windows and you encountered the same problem, try to kill the adb.Foreign travel prediction by numerology
Step 1. Follow answer from user above. Next time you connect your phone it will come up with an authorisation message and you're in. Step 3. Check USB port as if you install on one particular port then another port may not be ok for you. I had a long white cable.
[Guide] Fix adb - device is offline error
Just wouldnt stay connected. It turns out that the wire thickness used inside the cable impacts on the resistance of the cable assembly — this resistance causes energy loss inside the cable when an attached load draws a current, and causes a voltage drop which can reduce the voltage to the end device to a point where it is not possible to charge quickly or completely.
Change the USB cable!!!! I can't explain this technically, however after a lot of trial and error, this what have worked for me. Disabling and Enabling the Developer options and debug mode on the Android phone settings fixed the issue. Next time, android studio will restart adb and it may find your device. It really solved my problem. Hope it Help you!
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