How to solve java lang OutOfMemoryError trouble in Android

Question

Altough I have very small size image in drawable folder  I am getting this error from users  And I am not using any bitmap function in code  At least intentionally     java lang OutOfMemoryError     at android graphics BitmapFactory nativeDecodeAsset Native Method      at android graphics BitmapFactory decodeStream BitmapFactory java 683      at android graphics BitmapFactory decodeResourceStream BitmapFactory java 513      at android graphics drawable Drawable createFromResourceStream Drawable java 889      at android content res Resources loadDrawable Resources java 3436      at android content res Resources getDrawable Resources java 1909      at android view View setBackgroundResource View java 16251      at com autkusoytas bilbakalim SoruEkrani cevapSecimi SoruEkrani java 666      at com autkusoytas bilbakalim SoruEkrani 9 1 run SoruEkrani java 862      at android os Handler handleCallback Handler java 733      at android os Handler dispatchMessage Handler java 95      at android os Looper loop Looper java 146      at android app ActivityThread main ActivityThread java 5602      at java lang reflect Method invokeNative Native Method      at java lang reflect Method invoke Method java 515      at com android internal os ZygoteInit MethodAndArgsCaller run ZygoteInit java 1283      at com android internal os ZygoteInit main ZygoteInit java 1099      at dalvik system NativeStart main Native Method    According to this stackTrace I m gettin this error at this line   tv  is a textView    tv setBackgroundResource R drawable yanlis     What is the problem  If you need some other information about code  I can add it  Thanks

User · Answer

If you are getting this Error java lang OutOfMemoryError this is the most common problem occurs in Android  This error is thrown by the Java Virtual Machine  JVM  when an object cannot be allocated due to lack of memory space   Try this android hardwareAccelerated  false    android largeHeap  true in your   manifest xml file under application like this     lt application   android name   MyApplication    android allowBackup  true    android icon   mipmap ic launcher    android label   string app name    android theme   style AppTheme    android hardwareAccelerated  false    android largeHeap  true    gt

User · Answer

You can t increase the heap size dynamically but you can request to use more by using      android largeHeap  true    in the manifest xml you can add in your manifest these lines it is working for some situations    lt application     android allowBackup  true      android icon   mipmap ic launcher      android label   string app name      android largeHeap  true      android supportsRtl  true      android theme   style AppTheme  gt       Whether your application s processes should be created with a large Dalvik heap  This applies to all processes created for the application  It only applies to the first application loaded into a process  if you re using a shared user ID to allow multiple applications to use a process  they all must use this option consistently or they will have unpredictable results    Most apps should not need this and should instead focus on reducing their overall memory usage for improved performance  Enabling this also does not guarantee a fixed increase in available memory  because some devices are constrained by their total available memory      To query the available memory size at runtime  use the methods getMemoryClass   or getLargeMemoryClass     If still facing problem then this should also work   BitmapFactory Options options   new BitmapFactory Options     options inSampleSize   8   mBitmapInsurance   BitmapFactory decodeFile mCurrentPhotoPath options     If set to a value   1  requests the decoder to subsample the original image  returning a smaller image to save memory   This is the optimal use of BitmapFactory Options inSampleSize with regards to speed of displaying the image  The documentation mentions using values that are a power of 2  so I am working with 2  4  8  16 etc   Lets get more deeper to Image Sampling   For example  it   s not worth loading a 1024x768 pixel image into memory if it will eventually be displayed in a 128x128 pixel thumbnail in an ImageView   To tell the decoder to subsample the image  loading a smaller version into memory  set inSampleSize to true in your BitmapFactory Options object  For example  an image with resolution 2100 x 1500 pixels that is decoded with an inSampleSize of 4 produces a bitmap of approximately 512x384  Loading this into memory uses 0 75MB rather than 12MB for the full image  assuming a bitmap configuration of ARGB 8888   Here   s a method to calculate a sample size value that is a power of two based on a target width and height   public static int calculateInSampleSize          BitmapFactory Options options  int reqWidth  int reqHeight           Raw height and width of image     final int height   options outHeight      final int width   options outWidth      int inSampleSize   1       if  height  gt  reqHeight    width  gt  reqWidth             final int halfHeight   height   2          final int halfWidth   width   2              Calculate the largest inSampleSize value that is a power of 2 and keeps both            height and width larger than the requested height and width          while   halfHeight   inSampleSize   gt  reqHeight                  amp  amp   halfWidth   inSampleSize   gt  reqWidth                inSampleSize    2                       return inSampleSize         Note  A power of two value is calculated because the decoder uses a   final value by rounding down to the nearest power of two  as per the   inSampleSize documentation    To use this method  first decode with inJustDecodeBounds set to true  pass the options through and then decode again using the new inSampleSize value and inJustDecodeBounds set to false   public static Bitmap decodeSampledBitmapFromResource Resources res  int resId      int reqWidth  int reqHeight            First decode with inJustDecodeBounds true to check dimensions     final BitmapFactory Options options   new BitmapFactory Options        options inJustDecodeBounds   true      BitmapFactory decodeResource res  resId  options           Calculate inSampleSize     options inSampleSize   calculateInSampleSize options  reqWidth  reqHeight           Decode bitmap with inSampleSize set     options inJustDecodeBounds   false      return BitmapFactory decodeResource res  resId  options       This method makes it easy to load a bitmap of arbitrarily large size into an ImageView that displays a 100x100 pixel thumbnail  as shown in the following example code   mImageView setImageBitmap decodeSampledBitmapFromResource getResources    R id myimage  100  100      You can follow a similar process to decode bitmaps from other sources  by substituting the appropriate BitmapFactory decode  method as needed     I found this code also interesting   private Bitmap getBitmap String path     Uri uri   getImageUri path   InputStream in   null  try       final int IMAGE MAX SIZE   1200000     1 2MP     in   mContentResolver openInputStream uri           Decode image size     BitmapFactory Options o   new BitmapFactory Options        o inJustDecodeBounds   true      BitmapFactory decodeStream in  null  o       in close         int scale   1      while   o outWidth   o outHeight     1   Math pow scale  2    gt             IMAGE MAX SIZE           scale              Log d TAG   scale       scale      orig-width      o outWidth              orig-height      o outHeight        Bitmap bitmap   null      in   mContentResolver openInputStream uri       if  scale  gt  1            scale--             scale to max possible inSampleSize that still yields an image            larger than target         o   new BitmapFactory Options            o inSampleSize   scale          bitmap   BitmapFactory decodeStream in  null  o               resize to desired dimensions         int height   bitmap getHeight            int width   bitmap getWidth            Log d TAG   1th scale operation dimenions - width      width                 height      height            double y   Math sqrt IMAGE MAX SIZE                      double  width    height            double x    y   height    width           Bitmap scaledBitmap   Bitmap createScaledBitmap bitmap   int  x               int  y  true           bitmap recycle            bitmap   scaledBitmap           System gc          else           bitmap   BitmapFactory decodeStream in             in close         Log d TAG   bitmap size - width     bitmap getWidth        height              bitmap getHeight         return bitmap    catch  IOException e        Log e TAG  e getMessage   e       return null        How to Manage Your App s Memory  link    It s not a good idea to use android largeHeap  true  here s the extract from google that explains it        However  the ability to request a large heap is intended only for a   small set of apps that can justify the need to consume more RAM  such   as a large photo editing app   Never request a large heap simply   because you ve run out of memory and you need a quick fix   you should   use it only when you know exactly where all your memory is being   allocated and why it must be retained  Yet  even when you re confident   your app can justify the large heap  you should avoid requesting it to   whatever extent possible  Using the extra memory will increasingly be   to the detriment of the overall user experience because garbage   collection will take longer and system performance may be slower when   task switching or performing other common operations    After working excrutiatingly with out of memory errors i would say adding this to the manifest to avoid the oom issue is not a sin    Verifying App Behavior on the Android Runtime  ART   The Android runtime  ART  is the default runtime for devices running Android 5 0  API level 21  and higher  This runtime offers a number of features that improve performance and smoothness of the Android platform and apps  You can find more information about ART s new features in Introducing ART   However  some techniques that work on Dalvik do not work on ART  This document lets you know about things to watch for when migrating an existing app to be compatible with ART  Most apps should just work when running with ART     Addressing Garbage Collection  GC  Issues  Under Dalvik  apps frequently find it useful to explicitly call System gc   to prompt garbage collection  GC   This should be far less necessary with ART  particularly if you re invoking garbage collection to prevent GC FOR ALLOC-type occurrences or to reduce fragmentation  You can verify which runtime is in use by calling System getProperty  java vm version    If ART is in use  the property s value is  2 0 0  or higher   Furthermore  a compacting garbage collector is under development in the Android Open-Source Project  AOSP  to improve memory management  Because of this  you should avoid using techniques that are incompatible with compacting GC  such as saving pointers to object instance data   This is particularly important for apps that make use of the Java Native Interface  JNI   For more information  see Preventing JNI Issues     Preventing JNI Issues  ART s JNI is somewhat stricter than Dalvik s  It is an especially good idea to use CheckJNI mode to catch common problems  If your app makes use of C C   code  you should review the following article     Also  you can use native memory  NDK  amp  JNI   so you actually bypass the heap size limitation    Here are some posts made about it    How to cache bitmaps into native memory https   stackoverflow com a 9428660 1761003 JNI bitmap operations   for helping to avoid OOM when using large images   and here s a library made for it    https   github com AndroidDeveloperLB AndroidJniBitmapOperations

User · Answer

You should implement an LRU cache manager when dealing with bitmap  http   developer android com reference android util LruCache html http   developer android com training displaying-bitmaps cache-bitmap html When should I recycle a bitmap using LRUCache   OR  Use a tier library like Universal Image Loader     https   github com nostra13 Android-Universal-Image-Loader  EDIT     Now when dealing with images and most of the time with bitmap I use Glide which let you configure a Glide Module and a LRUCache  https   github com bumptech glide

User · Answer

I see only two options    You have memory leaks in your application  Devices do not have enough memory when running your application

User · Answer

Few hints to handle such error exception for Android Apps    Activities  amp  Application have methods like    onLowMemory onTrimMemory Handle these methods to watch on memory usage    tag in Manifest can have attribute  largeHeap  set to TRUE  which requests more heap for App sandbox  Managing in-memory caching  amp  disk caching    Images and other data could have been cached in-memory while app running   locally in activities fragment and globally   should be managed or removed   Use of WeakReference  SoftReference of Java instance creation   specifically to files  If so many images  use proper library data structure which can manage memory  use samling of images loaded  handle disk-caching  Handle OutOfMemory exception Follow best practices for coding    Leaking of memory  Don t hold everything with strong reference   Minimize activity stack e g  number of activities in stack  Don t hold everything on context activty    Context makes sense  those data instances not required out of scope  activity and fragments   hold them into appropriate context instead global reference-holding   Minimize the use of statics  many more singletons  Take care of OS basic memory fundametals   Memory fragmentation issues  Involk GC Collect   manually sometimes when you are sure that in-memory caching no more needed

User · Answer

android largeHeap  quot true quot  didn t fix the error In my case  I got this error after I added an icon image to Drawable folder by converting SVG to vector  Simply  go to the icon xml file and set small numbers for the width and height android width  quot 24dp quot  android height  quot 24dp quot  android viewportWidth  quot 3033 quot  android viewportHeight  quot 3033 quot

[android] How to solve java.lang.OutOfMemoryError trouble in Android

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