Third party tools, development environments, and language support have also continued to evolve and expand since the initial SDK was released in 2008. Some programming languages and tools allow cross-platform app support (i.e. All non- Java virtual machine (JVM) languages, such as Go, JavaScript, C, C++ or assembly, need the help of JVM language code, that may be supplied by tools, likely with restricted API support. Google states that "Android apps can be written using Kotlin, Java, and C++ languages" using the Android software development kit (SDK), while using other languages is also possible. Point to source code and set breakpoints.The Nexus 4, part of the Google Nexus series, a line of "developer-friendly" devices Īndroid software development is the process by which applications are created for devices running the Android operating system. The emulator and process should be listed. In Android Studio menu options, select Run > Attach debugger. You will need to re-run the set debug each time (or use -persistent option). You will get a popup that the app is waiting for a debug to attach. Run adb shell am set-debug-app -w .samples.masterdetail. Set the app to debug at startup (note the -w) Debug with ADB commandsįollow these steps to debug using ADB commands: You can also simulate app spanning and other gestures as part of UI Testing.
The time is important because if you drag too fast, the app is “flung” to the other screen rather than spanned. The first four values are the start and end coordinates of the drag gesture, and the final value is elapsed time (milliseconds). You can simulate this gesture with ADB, using the following command: adb shell input touchscreen swipe 675 1780 1350 1500 3000 These screenshots illustrate the process of spanning by grabbing the handle at the bottom of the window, and dragging it towards the hinge until the span indicator covers both screens: adb pull – extract files from the emulator or deviceĪnother use for ADB is simulating input commands, such as automating spanning of an app on Surface Duo.adb shell pm path – gets the file system path of the package specified.adb shell pm list packages – list all the packages installed.adb shell – execute commands on the Android system, for example:.adb devices – list the devices available (including emulators and phones or tablets attached to your computer).adb kill-server and adb start-server – stop and start the ADB service if needed.There are many features covered in the ADB documentation but here are some useful commands: ADB is an important tool for developers because it allows you to interact with Android emulators, and also with connected devices.
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