To specify the target, use the devices command to get the serial number of the target. Once you have the serial number, use the -s option with the adb commands to specify the serial number. In the following example, the list of attached devices is obtained, and then the serial number of one of the devices is used to install the helloWorld. Note: If you issue a command without specifying a target device when multiple devices are available, adb generates an error.
If you have multiple devices available, but only one is an emulator, use the -e option to send commands to the emulator. Likewise, if there are multiple devices but only one hardware device attached, use the -d option to send commands to the hardware device.
You can use adb to install an APK on an emulator or connected device with the install command:. You must use the -t option with the install command when you install a test APK. For more information, see -t. Instead, Android Studio handles the packaging and installation of the app for you. You can use the forward command to set up arbitrary port forwarding, which forwards requests on a specific host port to a different port on a device.
The following example sets up forwarding of host port to device port Use the pull and push commands to copy files to and from an device. Unlike the install command, which only copies an APK file to a specific location, the pull and push commands let you copy arbitrary directories and files to any location in a device.
In some cases, you might need to terminate the adb server process and then restart it to resolve the problem e. To stop the adb server, use the adb kill-server command. You can then restart the server by issuing any other adb command. You can issue adb commands from a command line on your development machine or from a script.
The usage is:. If there's only one emulator running or only one device connected, the adb command is sent to that device by default. You can use the shell command to issue device commands through adb, or to start an interactive shell. To issue a single command use the shell command like this:. To start an interactive shell on a device use the shell command like this:.
Note: With Android Platform-Tools 23 and higher, adb handles arguments the same way that the ssh 1 command does. But, this change means that the interpretation of any command that contains shell metacharacters has also changed. For example, the adb shell setprop foo 'a b' command is now an error because the single quotes ' are swallowed by the local shell, and the device sees adb shell setprop foo a b.
To make the command work, quote twice, once for the local shell and once for the remote shell, the same as you do with ssh 1. For example, adb shell setprop foo "'a b'".
Android provides most of the usual Unix command-line tools. For a list of available tools, use the following command:. Help is available for most of the commands via the --help argument. Many of the shell commands are provided by toybox.
General help applicable to all toybox commands is available via toybox --help. See also Logcat Command-Line Tool which is useful for monitoring the system log. Within an adb shell, you can issue commands with the activity manager am tool to perform various system actions, such as start an activity, force-stop a process, broadcast an intent, modify the device screen properties, and more. While in a shell, the syntax is:.
You can also issue an activity manager command directly from adb without entering a remote shell. See the Specification for intent arguments. Options are: -D : Enable debugging. Prior to each repeat, the top activity will be finished. This command kills only processes that are safe to kill and that will not impact the user experience. Use with [-e perf true] to generate raw output for performance measurements. Required for test runners.
Options are: -w : Wait for debugger when app starts. This command is helpful for testing your app across different screen sizes by mimicking a small screen resolution using a device with a large screen, and vice versa. Example: am display-size x display-density dpi Override device display density. This command is helpful for testing your app across different screen densities on high-density screen environment using a low density screen, and vice versa.
Example: am display-density to-uri intent Print the given intent specification as a URI. Specification for intent arguments For activity manager commands that take an intent argument, you can specify the intent with the following options:.
Within an adb shell, you can issue commands with the package manager pm tool to perform actions and queries on app packages installed on the device.
You can also issue a package manager command directly from adb without entering a remote shell. Options: -f : See their associated file. Options: -g : Organize by group. Options: -f : List the APK file for the test package. First of all, power off your smartphone. Load into the bootload screen by using the key combination of your smartphone. In most of the smartphones, the key combination includes holding the power button and volume down button simultaneously.
Step 3. Well, there are plenty of third-party cache cleaner apps available on the Google Play Store that can be used to clean your device in no-time. Below, we have shared some of the best third-party cache cleaner apps for Android. The app is known for its user-interface and it can clean junk files in no-time. Apart from that, it also got an app manager that checks which apps consume your data and finds the battery-draining apps. It is another best Android junk cleaner app on the list which cleans junk files, cache files, memory, and unwanted apps.
The good thing is that it instantly removes unimportant data like gallery thumbnails and residual or unused Apks. If you are searching for a highly effective cache and junk cleaner app for your Android smartphone, then you need to give Avast Cleanup a try.
With Avast Cleanup, you can easily clean the junk and cache files, remove leftover files, unused apps, etc. It also has an advanced photo optimizer to control the size and quality of the photos. You can then open, move, rename, copy, delete, and share files as needed.
And if you have Android 9 or higher on your phone, things get even easier: In those recent Android versions , the file manager exists in its own sensibly named Files app. Just open it up to browse any area of your local storage or a connected Drive account; you can either use the file type icons at the top of the screen or, if you want to look folder by folder, tap the three-dot menu icon in the upper-right corner and select "Show internal storage" — then tap the three- line menu icon in the upper- left corner and look for your phone's name.
The most recent version of the system-level Files app lets you browse through files in a variety of ways, including via a traditional folder-by-folder view. Such an app might exist within a folder bearing the manufacturer's name, in your app drawer, and might be called My Files — or something along those lines. You'll probably find the same basic sort of file management functionality within it, just with a somewhat different interface and set of options. If you want to do more than the most basic on-device file management, meanwhile, a third-party file manager is the way to go.
You can find my latest recommendations for various needs in my separate roundup of the best Android file manager apps. One little-known feature of Android is its ability to connect with external storage devices like USB memory sticks and even larger-capacity portable hard drives. A fair number of devices, including Google's Pixel phones and many Samsung Galaxy products, offer such support.
If you aren't sure if your phone does, your best bet is to Google its name along with "USB OTG"; odds are, you'll find the answer fairly quickly. Use the adapter to plug the external drive into your phone, then look for a notification confirming the drive is connected. Tap the "Explore" option within the notification, and that's it: You can now browse and access all the files on your external drive.
Look for the notification that pops up when an external drive is connected, and you'll be browsing the drive's contents in no time. When you're finished, don't forget to go back to the notification and tap "Eject" before disconnecting the drive. In addition to supporting external hard drives, your Android phone can act as an external hard drive.
Just plug your device into any Windows, Mac, or Chrome OS computer, and you can access its entire file system and drag and drop files between it and your desktop with ease. With a Windows or Chrome OS system, it's essentially as simple as plug and play. Be respectful, keep it civil and stay on topic.
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How to clear all your Android app caches with App Cache Cleaner If you want to clear the cache for every app on your Android device, you normally have to clear them one at a time.
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