Android Monitor Overview (45)

Android Monitor Overview

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In this document

1. Log Messages
2. Performance Monitors
3. Data Analysis
4. Screen and Video Captures
5. Get Started

Android Monitor helps you to profile the performance of your apps so you can optimize, debug, and improve them. It lets you monitor the following aspects of your apps from a hardware device or the Android Emulator:

• Log messages, either system- or user-defined
• Memory, CPU, and GPU usage
• Network traffic (hardware device only)

Android Monitor provides various tools that provide real-time information about your app. It lets you capture data as your app runs and stores it in a file that you can analyze in various viewers. You can also capture screenshots and videos of your app as it runs.

Log Messages

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View log messages — in real time and historically — which is useful for debugging.

logcat Monitor

Use the logcat Monitor to view system and user-defined log messages. You can filter the messages to display just the items that interest you.

Performance Monitors

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Visualize the behavior and performance of your app.

Memory Monitor

Use the Memory Monitor to evaluate memory usage and find deallocated objects, locate memory leaks, and track the amount of memory the connected device is using.

CPU Monitor

Use the CPU Monitor to display CPU usage in real time and the percentage of total CPU time (including all cores) used in user and kernel mode.

GPU Monitor

Use the GPU Monitor for a visual representation of how much time it takes to render the frames of a UI window. Use this information to optimize the code that displays graphics and conserve memory.

Network Monitor

Use the Network Monitor to analyze network requests, including how and when your app transfers data. Preserve battery life by optimizing network use.

Data Analysis

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Android Monitor lets you capture various types of data about your app while it's running and stores it in a file, which you can access whenever is convenient. It lists these files in the Captures window.

HPROF Viewer and Analyzer

Use the Memory Monitor to dump the Java heap to an HPROF file. The HPROF Viewer displays classes, instances of each class, and a reference tree to help you track memory usage and find memory leaks.

Allocation Tracker

Use the Memory Monitor to capture allocation data about your app. The Allocation Tracker displays each method responsible for an allocation, as well as the allocation size and number of instances.

Method Trace

Use the CPU Monitor to perform a method trace on your app. View call stack and timing information in the method trace display.

System Information

Use the System Information tool to capture dumpsys information about your app. View activity manager, package, memory usage, and graphics state information.

Screen and Video Captures

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Create screen captures and videos of your app to help with marketing and debugging.

Screen Capture

Use the Screen Capture tool to take a screenshot of the display on a hardware device or the emulator. Optionally display the screenshot within a graphic of a device.

Video Capture

Use the Video tool to make a video of the display on a hardware device.

Get Started

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To begin using Android Monitor, start with Android Monitor Basics.

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