In the Dalvik runtime, the programmer doesn't explicitly allocate and free memory, so you can't really leak memory like you can in languages like C and C++. For example: hprof-conv dump.hprof converted-dump.hprof Example: Debugging a memory leak You can do this using the hprof-conv tool provided in the Android SDK. hprof file from the Dalvik format to the J2SE HPROF format.
However, first you'll need to convert the. To analyze a heap dump, you can use a standard tool like jhat or the Eclipse Memory Analyzer (MAT). If you need to be more precise about when the dump is created, you can also create a heap dump programmatically by using the android.os.Debug.dumpHprofData() function. One way is to use the Dump HPROF file button in DDMS. There are a few ways to generate a heap dump of a running Android app. Dalvik uses a format that is similar, but not identical, to the HPROF tool in Java. The rest of this article will focus on heap dumps, which are a more powerful memory analysis tool.Ī heap dump is a snapshot of an application's heap, which is stored in a binary format called HPROF. For more information about the Allocation Tracker, see the article on Tracking Memory Allocations. The Allocation Tracker is useful when you want to get a sense of what kinds of allocation are happening over a given time period, but it doesn't give you any information about the overall state of your application's heap. The Android SDK provides two main ways of profiling the memory usage of an app: the Allocation Tracker tab in DDMS, and heap dumps. Other problems are more subtle, and may just degrade the performance of both your app (as garbage collections are more frequent and take longer) and the entire system. For example, if your app leaks memory every time the user touches the screen, it will probably trigger an OutOfMemoryError eventually and crash your app. In this article, we're going to take a look at some of the memory profiling tools in the Android SDK that can help you trim your application's memory usage.
You should be especially mindful of memory usage on mobile devices, where memory is more constrained.
The Dalvik runtime may be garbage-collected, but that doesn't mean you can ignore memory management.
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