blocks|key|1208176|text|另一种方式(目前在我的G1上显示25MB可用空间)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1208177|MemoryInfo+mi+=+new+MemoryInfo();
ActivityManager+activityManager+=+(ActivityManager)+getSystemService(ACTIVITY_SERVICE);
activityManager.getMemoryInfo(mi);
long+availableMegs+=+mi.availMem+/+1048576L;|code-block|syntax|javascript|1208178|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Another way (currently showing 25MB free on my G1):

<pre><code>MemoryInfo mi = new MemoryInfo();
ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
activityManager.getMemoryInfo(mi);
long availableMegs = mi.availMem / 1048576L;
</code></pre>

blocks|key|993826|text|你也可以使用DDMS工具，它是android+SDK本身的一部分。它有助于获得java代码和本机c/c%2B%2B代码的内存分配。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|993827|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

you can also use DDMS tool which is part of android SDK it self.
it helps in getting memory allocations of java code and native c/c++ code as well.

blocks|key|1208206|text|public+static+boolean+isAppInLowMemory(Context+context)+{
++++ActivityManager+activityManager+=+(ActivityManager)+context.getSystemService(Context.ACTIVITY_SERVICE);
++++ActivityManager.MemoryInfo+memoryInfo+=+new+ActivityManager.MemoryInfo();
++++activityManager.getMemoryInfo(memoryInfo);

++++return+memoryInfo.lowMemory;
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1208207|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>public static boolean isAppInLowMemory(Context context) {
 ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
 ActivityManager.MemoryInfo memoryInfo = new ActivityManager.MemoryInfo();
 activityManager.getMemoryInfo(memoryInfo);

 return memoryInfo.lowMemory;
}
</code></pre>

blocks|key|1208262|text|final+long+usedMemInMB=(runtime.totalMemory()+-+runtime.freeMemory())+/+1048576L;
final+long+maxHeapSizeInMB=runtime.maxMemory()+/+1048576L;
final+long+availHeapSizeInMB+=+maxHeapSizeInMB+-+usedMemInMB;|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1208263|这是一个奇怪的代码。它返回MaxMemory+-+(totalMemory+-+freeMemory)。如果freeMemory等于0，那么代码将返回MaxMemory+-+totalMemory，因此它可以大于或等于0。为什么不使用freeMemory？|unstyled|1208264|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>final long usedMemInMB=(runtime.totalMemory() - runtime.freeMemory()) / 1048576L;
final long maxHeapSizeInMB=runtime.maxMemory() / 1048576L;
final long availHeapSizeInMB = maxHeapSizeInMB - usedMemInMB;
</code></pre>

It is a strange code. It return MaxMemory - (totalMemory - freeMemory). If freeMemory equals 0, then the code will return MaxMemory - totalMemory, so it can more or equals 0. Why freeMemory not used?

blocks|key|1208287|text|以下是查看应用程序内存使用情况的另一种方式：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1208288|adb+shell+dumpsys+meminfo+<com.package.name>+-d|code-block|syntax|javascript|1208289|示例输出：|1208290|Applications+Memory+Usage+(kB):
Uptime:+2896577+Realtime:+2896577

**+MEMINFO+in+pid+2094+[com.package.name]+**
+++++++++++++++++++Pss++Private++Private++Swapped+++++Heap+++++Heap+++++Heap
+++++++++++++++++Total++++Dirty++++Clean++++Dirty+++++Size++++Alloc+++++Free
++++++++++++++++------+++------+++------+++------+++------+++------+++------
++Native+Heap+++++3472+++++3444++++++++0++++++++0+++++5348+++++4605++++++102
++Dalvik+Heap+++++2349+++++2188++++++++0++++++++0+++++4640+++++4486++++++154
+Dalvik+Other+++++1560+++++1392++++++++0++++++++0
++++++++Stack++++++772++++++772++++++++0++++++++0
++++Other+dev++++++++4++++++++0++++++++4++++++++0
+++++.so+mmap+++++2749+++++1040+++++1220++++++++0
++++.jar+mmap++++++++1++++++++0++++++++0++++++++0
++++.apk+mmap++++++218++++++++0+++++++32++++++++0
++++.ttf+mmap+++++++38++++++++0++++++++4++++++++0
++++.dex+mmap+++++3161+++++++80+++++2564++++++++0
+++Other+mmap++++++++9++++++++4++++++++0++++++++0
++++++Unknown+++++++76+++++++76++++++++0++++++++0
++++++++TOTAL++++14409+++++8996+++++3824++++++++0+++++9988+++++9091++++++256

+Objects
+++++++++++++++Views:+++++++30+++++++++ViewRootImpl:++++++++2
+++++++++AppContexts:++++++++4+++++++++++Activities:++++++++2
++++++++++++++Assets:++++++++2++++++++AssetManagers:++++++++2
+++++++Local+Binders:+++++++17++++++++Proxy+Binders:+++++++21
++++Death+Recipients:++++++++7
+++++OpenSSL+Sockets:++++++++0

+SQL
+++++++++MEMORY_USED:++++++++0
++PAGECACHE_OVERFLOW:++++++++0++++++++++MALLOC_SIZE:++++++++0|1208291|对于总体内存使用情况：|1208292|adb+shell+dumpsys+meminfo|1208293|https://developer.android.com/studio/command-line/dumpsys#meminfo|offset|length|1208294|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|0|0|0|0|1T|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|10|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|11|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|12|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|13|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|14|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|15|8|@]|9|@$Q|16|R|17|1|18]]|A|$]]|$1|S|3|-4|5|6|7|19|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|P]]]]

Here is another way to view your app's memory usage:

<pre><code>adb shell dumpsys meminfo &lt;com.package.name&gt; -d
</code></pre>

Sample output:

<pre><code>Applications Memory Usage (kB):
Uptime: 2896577 Realtime: 2896577

** MEMINFO in pid 2094 [com.package.name] **
 Pss Private Private Swapped Heap Heap Heap
 Total Dirty Clean Dirty Size Alloc Free
 ------ ------ ------ ------ ------ ------ ------
 Native Heap 3472 3444 0 0 5348 4605 102
 Dalvik Heap 2349 2188 0 0 4640 4486 154
 Dalvik Other 1560 1392 0 0
 Stack 772 772 0 0
 Other dev 4 0 4 0
 .so mmap 2749 1040 1220 0
 .jar mmap 1 0 0 0
 .apk mmap 218 0 32 0
 .ttf mmap 38 0 4 0
 .dex mmap 3161 80 2564 0
 Other mmap 9 4 0 0
 Unknown 76 76 0 0
 TOTAL 14409 8996 3824 0 9988 9091 256

 Objects
 Views: 30 ViewRootImpl: 2
 AppContexts: 4 Activities: 2
 Assets: 2 AssetManagers: 2
 Local Binders: 17 Proxy Binders: 21
 Death Recipients: 7
 OpenSSL Sockets: 0

 SQL
 MEMORY_USED: 0
 PAGECACHE_OVERFLOW: 0 MALLOC_SIZE: 0

</code></pre>

For overall memory usage:

<pre><code>adb shell dumpsys meminfo
</code></pre>

<a href="https://developer.android.com/studio/command-line/dumpsys#meminfo" rel="nofollow noreferrer">https://developer.android.com/studio/command-line/dumpsys#meminfo</a>

I have used /proc/meminfo and parsed command response.however it result shows that : 

MemTotal: 94348 kB
MemFree: 5784 kB

means. it shows there is only 5MB free memory. Is it possible with android mobile?
There is only 5-6 application installed on my mobile and no other task is running. but still this command shows there is very little free memory.

Can somebody clarify this? or is there any other way of getting memory usage in android?

How to get current memory usage in android?

我使用了/proc/meminfo并解析了命令response.however，结果显示：MemTotal: 94348 kB MemFree: 5784 kB意思是。它显示只有5MB可用内存。安卓手机能做到吗？我的手机上只安装了5-6个应用程序，没有其他任务在运行。但此命令仍然显示可用内存非常少。有人能澄清这一点吗？...

问如何在android中获取当前内存使用情况？
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