Introduction:
A memory analysis tool provided by Eclipse. It is a feature-rich JAVA heap dump file analysis tool that can help you find memory leaks and reduce memory consumption.
Official website address: http://www.eclipse.org/mat
installation (if you are using MOTODEV Studio for Android, the tool comes with it by default)
You can choose to install the original plug-in provided by Eclipse or use the MOTODEV Studio for Android plug-in
> >1. Original plugin
1). Start Eclipse, click Help -> Intall New Software...
; 3 )
. Wait for the list to be updated, find and expand "General Purpose Tools";
4). Select and download "Memory Analyser (Incubation)" and "Memory Analyser (Charts)".
>>2.MOTODEV Studio for Android plugin
1). Start Eclipse, click Help -> Intall New Software...;
2). Create a new update through Add (the latest address can be obtained here ):
Name:MOTODEV Studio for Android Plugin
Location: https://studio-android.motodevupdate.com/android/2.0
3). Download and install this update.
* If it is mainly for Android development, it is recommended to use the integrated plug-in of MOTODEV Studio for Android, which should also provide a lot of convenient tools, but if you have already installed ADT, you need to uninstall it manually before installing it. For details, please refer to: Install MOTODEV as a plug-in Studio.
Use method 1 - run with parameters,
please refer to: Eclipse Memory Analyser (MAT) - Tutorial
General steps:
(1) Arguments in Run Conigurations.. set VM argument to:
-XX:+HeapDumpOnOutOfMemoryError
(2) Run Your project and generate a .hprof file. If you don't see it, please press F5 to refresh the project directory, which is in the root directory;
(3) Double-click the .hprof file to open it, and select "Leak Suspects Report"
using method 2 - Combined with Sequoyah to monitor specific The device and application
<This method requires you to install the Sequoyah or MOTODEV Studio for Android plug-in> For
details, please refer to: Using MAT to analyze application memory
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*Note:
Parsing a HeapDump that is too large may cause Eclipse to throw an OutOfMemory error: 
At this time, you need to manually adjust the size of Eclipse's cache, you can refer to the handling method given by the official website ( original link ): 
>> My usage:
My machine can only be set to 512m, and I still can't solve the problem of OutOfMemory. It seems that there are certain requirements for memory...
But I downloaded the RPC version of MAT and it can be opened normally. Eclipse Friends who cannot open the plug-in version can try this method: RPC version MAT download address .
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The interface after opening is as follows: 
更详细的使用示例请参考以下文章：
http://wiki.eclipse.org/index.php/MemoryAnalyzer
—— 官方的帮助文档
使用 Eclipse Memory Analyzer 进行堆转储文件分析
—— 来自IBM的使用教程
Eclipse Memory Analyser (MAT) - Tutorial
—— 一个浅显易懂的MAT使用教程
使用Memory Analyzer tool(MAT)分析内存泄漏（一）
使用Memory Analyzer tool(MAT)分析内存泄漏（二）
—— 详细地分析了内存泄露的原因，并举例说明，强烈推荐