android memory usage

causes garbage collectionPause_time pause time, one representing the start of garbage collection time, the other represents the end of the recovery of the pause timeD/DALVIKVM (9050): Gc_concurrent freed 2049K, 65% free 3571k/9991k, external 4703k/5261k, paused 2ms+2msNote the "3571k/9991k" value in this message, which represents the heap size used by the program.2. Using DDMSDdms in Eclipse provides a GUI that looks at memory

Sometimes you may find errors due to insufficient memory, mostly because the Image is too large. The following is a simple and effective method: BitmapFactory. Options opts = new BitmapFactory. Options ();Opts. inSampleSize = 4;Bitmap bitmap = BitmapFactory. decodeFile (imageFile, opts );Setting the appropriate inSampleSize is one of the keys to solve this problem. BitmapFactory. Options provides another member, inJustDecodeBounds.BitmapFactory. Optio

The use of bitmapfactory.options in Android is when you load a picture, and you start by loading and using it.How do I get the size of a picture?First we turn the picture into a bitmap and then use the bitmap getwidth () and GetHeight () method to get the picture wide.A new problem comes up, and when you go through the Bitmapfactory.decodefile (String path) method and turn the break into bitmap, we often encounter the problem of Oom (out of

Android obtains all process information and obtains the memory used by the process.Package Zhangphil.process;import Java.util.list;import Android.os.bundle;import android.os.debug.memoryinfo;import Android.widget.textview;import Android.app.activity;import Android.app.activitymanager;import Android.app.activitymanager.runningappprocessinfo;import Android.content.context;public class MainActivity extends Act

$ process Number//Of course you can also enter the remainder of the ADB shell after entering. Shown below:Applications Memory Usage (KB):uptime:70102403 realtime:104776333* * Meminfo in PID 14335 [com.android.launcher2] * *Native Dalvik Other Totalsize:27576 8455 N/a 36031allocated:26850 5311 N/a 32161free:385 3144 N/a 3529(PSS): 13830 1134 16034 30998(Shared Dirty): 2980 1932 13776 18688(Priv Dirty): 137

1. procrank (only for Android) It reads information from/proc/Pid/maps for statistics. The source code is located at:/system/extras/procrank Memory consumption: VSS/RSS/PSS/USS• VSS-virtual set size virtual memory consumption (including memory occupied by shared libraries)• RSS-resident set size actually uses physical

Android's definition of each resolutionHow to calculate when a picture is stored in a format argb_8888Memory consumption = picture length * Picture width/bytesPicture length = picture original long (Device dpi/folder dpi) Picture width = Picture original width (device dpi/folder dpi)Examples of validation are as follows:Picture size 200 * 320, device is red meter dpi is 320, belongs to xhdpi device.Verify that a picture is placed in hdpi and the following is the result of the code output:Dd/ma

. Id. system_memory );TV. settext ("total cell phone memory:" + this. gettotalmemory () + "," + "available memory :"+ This. getavailmemory ());}} 3. Running result The success is that the total memory and current available memory of the Android mobile phone are successfully

global variable ), and release point reference objects (such as in the lifecycle) when appropriate ). For most applications, the garbage collector of the Dalvik virtual machine will help you reclaim the memory of objects that are no longer in scope. This article describes how Android manages memory processes and memory