This command is rate-limited. The screencap command is a shell utility for taking a screenshot of a device display. The utility records screen activity to an MPEG-4 file. You can use this file to create promotional or training videos or for debugging and testing. To begin recording your device screen, run the screenrecord command to record the video.
Then, run the pull command to download the video from the device to the host computer. The utility records at the native display resolution and orientation by default, with a maximum length of three minutes. Table 5. Starting in Android 7. You might want to examine the collected profiles to understand which methods are determined to be frequently executed and which classes are used during app startup.
If you test your app across multiple test devices, it may be useful to reset your device between tests, for example, to remove user data and reset the test environment. You can perform a factory reset of a test device running Android 10 API level 29 or higher using the testharness adb shell command, as shown below. When restoring the device using testharness , the device automatically backs up the RSA key that allows debugging through the current workstation in a persistent location.
That is, after the device is reset, the workstation can continue to debug and issue adb commands to the device without manually registering a new key. Additionally, to help make it easier and more secure to keep testing your app, using the testharness to restore a device also changes the following device settings:. If you app needs to detect and adapt to the default settings of the testharness command, you can use the ActivityManager.
It includes commands such as. You can also execute SQLite commands from the command line, as shown below. For more information, see the sqlite3 command line documentation. Content and code samples on this page are subject to the licenses described in the Content License.
Android Studio. Download What's new User guide Preview. Meet Android Studio. Manage your project. Write your app. Build and run your app. Run apps on the emulator. Run apps on a hardware device. Configure your build. Optimize your build speed. Debug your app. Test your app. Profile your app. Android Studio profilers. Profile CPU activity. Benchmark your app. Measure performance. Publish your app. Command line tools. Android Developers. It is a client-server program that includes three components: A client , which sends commands.
The client runs on your development machine. You can invoke a client from a command-line terminal by issuing an adb command. A daemon adbd , which runs commands on a device. The daemon runs as a background process on each device. A server , which manages communication between the client and the daemon. The server runs as a background process on your development machine.
How adb works When you start an adb client, the client first checks whether there is an adb server process already running. For example: Emulator 1, console: Emulator 1, adb: Emulator 2, console: Emulator 2, adb: and so on Enable adb debugging on your device To use adb with a device connected over USB, you must enable USB debugging in the device system settings, under Developer options.
On some devices, the Developer options screen might be located or named differently. To connect to your device, follow these steps: Figure 1. Wireless ADB pairing dialog. Figure 2. Wireless adb IP and port number. Start an Activity specified by intent. Start the Service specified by intent. Force stop everything associated with package the app's package name. Kill all processes associated with package the app's package name.
Issue a broadcast intent. Start monitoring with an Instrumentation instance. Start profiler on process , write results to file. Dump the heap of process , write to file. Set app package to debug. Clear the package previous set for debugging with set-debug-app. Start monitoring for crashes or ANRs. Control screen compatibility mode of package.
Override device display size. Example: am display-size x Override device display density. Example: am display-density Print the given intent specification as a URI. More downloads are available in the download archives.
For information on recommended devices and specifications, as well as Android Emulator support, visit chromeos. If you're new to Android development, check out the following resources to get started. Build your first app Start writing code in Android Studio by following the tutorial to Build your first app.
Learn Android with interactive video training in the Android Fundamentals Udacity course. For help installing Android Studio, see the Install guide. Android Studio. Download What's new User guide Preview. Android Developers. Android Studio Android Studio provides the fastest tools for building apps on every type of Android device.
Download Not Available Your current device is not supported. Download options Release notes. More about the layout editor. More about the APK Analyzer. More about the emulator. More about the editor. More about the build tools. More about the profilers. Chrome OS For information on recommended devices and specifications, as well as Android Emulator support, visit chromeos. Thank you for downloading Android Studio! Download Android Studio Introduction 1.
Accepting this License Agreement 2. If you do not have the requisite authority, you may not accept the License Agreement or use the SDK on behalf of your employer or other entity. The Android SDK is composed of multiple packages that are required for app development. This page lists the most important command line tools that are available, organized by the packages in which they're delivered.
All of the packages are downloaded into your Android SDK directory, which you can locate as follows:. If you just need these tools because you're not using Android Studio, you can download the command-line tools package here. This package is required to build Android apps. Most of the tools in here are invoked by the build tools and not intended for you.
However, the following command line tools might be useful:. Note: You can have multiple versions of the build tools to build your app for different Android versions. These tools are updated for every new version of the Android platform to support new features and sometimes more often to fix or improve the tools , and each update is backward compatible with older platform versions.
Note: Prior to revision Jetifier reads a library that uses Support Library classes, and outputs an equivalent library that uses the newer AndroidX classes. Content and code samples on this page are subject to the licenses described in the Content License.
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