Android Logcat window reference
This page introduces the different parts of the Android Logcat window's interface.
The Anrdoid Logcat window.
| Label | Description |
|---|---|
 |
Toolbar: Contains options and tools for the Android Logcat window. |
 |
Message log: Lists the messages that Unity receives from Android Logcat. |
Toolbar
The toolbar contains options that customize the message log section and also additional tools that relate to Android Logcat and the connected Android device.
The Android Logcat window toolbar.
| Toolbar option | Description |
|---|---|
| Auto Run | Toggles auto-run. When enabled, the Android Logcat window launches automatically when you Build And Run your application. For more information, see Use auto run. |
| Device Selector | Specifies the Android device to connect the Android Logcat window to. For more information, see Connect to a device. |
| Package Selector | Specifies the application on the Android device to display messages for. For more information, see Select an application. |
| Filter Input | A search field that you can use to filter the message log by text. For more information, see Filter the message logs. |
| Filter Options | Options that determine how to use Filter Input to filter messages in the message log. The options are: • Use Regular Expressions: Indicates whether to treat the Filter Input as a regular expression. • Match Case: Indicates whether to make the filter case-senstive or not. For more information, see Filter the message logs. |
| Reconnect | Reconnects the Android Logcat window to the application and the device. If the application is no longer running, this reconnects to the device with no application selected. |
| Disconnect | Disconnects the Android Logcat window from the device. |
| Clear | Clears the list of messages in the message log. |
| Tools | A drop-down list of tools that can help you to debug your Android application. The options are: • Screen Capture: Captures screenshots and videos from the connected Android device. For more information, see Screen capture tool. • Open Terminal: Opens the terminal on macOS and Linux, and opens the Windows Console on Windows. • Stacktrace Utility: Resolves custom stack traces. For more information, see Stacktrace Utility. • Memory Window: Tracks the memory allocated for your application. For more information, see Memory window. |
Message log
The message log section displays the messages that Unity receives from Android Logcat. It displays information for each message in predefined columns.
Message log column names.
| Column name | Description |
|---|---|
| Icon | The icon that indicates the message type. If you want to see icons, but they aren't visible, increase the font size of messages. To do this, go Edit > Preferences > Android Logcat Settings, and increase Font Size until the icons appear. |
| Time | The time that the message was produced. |
| Pid | The ID of the process that produced the message. |
| Tid | The ID of the thread that produced the message. |
| Priority | The message's priority. For more information about message priority, see Filtering log output. |
| Tag | The tag associated with the message. |
| Message | The message text. |
Message log controls
The message log contains functionality that helps you to navigate through and share messages.
| Control | Description |
|---|---|
| Copy | To copy the selected logs to the clipboard, right-click the selected messages and select Copy. |
| Save | To save the selected logs to a file on your computer, right-click the selected messages and select Save. |
| Navigate | To navigate through message logs using the keyboard, use the arrow keys. |
Process Manager
You can access the Process Manager from the message log section when you right click on the selected message. The Process Manager helps you to manually invoke events related to a specific process, such as force an application to terminate or send memory trim events.
Terminate an application
The following options in the Process Manager help you to force an application to terminate.
| Type | Description |
|---|---|
| Send Unix signal | Sends a signal to the process using command adb shell run-as <package_name> kill -s <posix_signal> <process_id>. For more information, refer to standard signals. You can use SIGILL, SIGTRAP, SIGABRT, SIGBUS, SIGFPE, SIGSEGV, SIGPIPE, SIGSTKFLT signals to test Unity Android crash handler. |
| Crash | Triggers a virtual machine crash in the specified package or process using command adb shell am crash <process_id>. |
| Force Stop | Stops the given application package completely using command adb shell am force-stop <package_name>. The application stops without having a chance to respond. |
Send trim memory
The Send Trim Memory option allows you to send a memory trim signal to the selected process to help you understand how your application handles low memory events. The control sends a memory trim event to a process using command adb shell am send-trim-memory <process_id> <trim_level>. For more information about the trim levels, refer to Android developer documentation.
For example, by using RUNNING_CRITICAL trim level you can test the following Unity APIs: