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flipper/docs/leak-canary-plugin.md
Daniel Büchele 159ce69bc8 Docs
Summary: renaming flipper in docs

Reviewed By: passy

Differential Revision: D9871491

fbshipit-source-id: 7a7dcc8421229f3a253efc6a49202dad5c7315d0
2018-09-18 07:01:17 -07:00

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---
id: leak-canary-plugin
title: LeakCanary
---
The LeakCanary plugin provides developers with Flipper support for [LeakCanary](https://github.com/square/leakcanary), an open source memory leak detection library.
## Setup
Note: this plugin is only available for Android.
### Android
First, add the plugin to your Flipper client instance:
```java
import com.facebook.sonar.plugins.leakcanary.LeakCanarySonarPlugin;
client.addPlugin(new LeakCanarySonarPlugin());
```
Next, build a custom RefWatcher using RecordLeakService: (see [LeakCanary docs](https://github.com/square/leakcanary/wiki/Customizing-LeakCanary#uploading-to-a-server) for more information on RefWatcher)
```java
import com.facebook.sonar.plugins.leakcanary.RecordLeakService;
RefWatcher refWatcher = LeakCanary.refWatcher(this)
.listenerServiceClass(RecordLeakService.class);
.buildAndInstall();
```
## Usage
Leaks detected by LeakCanary will appear automatically in Flipper. Each leak will display a hierarchy of objects, beginning from the garbage collector root and ending at the leaked class.
Selecting any object in this list will display contents of the object's various fields.