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I have hundreds of images in my virtual magazine. The images are 1241* 1754 pixels with 150 pixels/inch resolution. After sliding to 3/4 of those pages i get an out of memory error as shown in the log.

12-04 10:20:50.781: E/AndroidRuntime(3236): java.lang.OutOfMemoryError 12-04 10:20:50.781: E/AndroidRuntime(3236): at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method) 12-04 10:20:50.781: E/AndroidRuntime(3236): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:572) 12-04 10:20:50.781: E/AndroidRuntime(3236): at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:440) 12-04 10:20:50.781: E/AndroidRuntime(3236): at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:773) 12-04 10:20:50.781: E/AndroidRuntime(3236): at android.content.res.Resources.loadDrawable(Resources.java:1974) 12-04 10:20:50.781: E/AndroidRuntime(3236): at android.content.res.Resources.getDrawable(Resources.java:677) 12-04 10:20:50.781: E/AndroidRuntime(3236): at fi.harism.curl.LPMagHome$PageProvider.loadBitmap(LPMagHome.java:192) 12-04 10:20:50.781: E/AndroidRuntime(3236): at fi.harism.curl.LPMagHome$PageProvider.updatePage(LPMagHome.java:266) 12-04 10:20:50.781: E/AndroidRuntime(3236): at fi.harism.curl.CurlView.updatePage(CurlView.java:713) 12-04 10:20:50.781: E/AndroidRuntime(3236): at fi.harism.curl.CurlView.startCurl(CurlView.java:554) 12-04 10:20:50.781: E/AndroidRuntime(3236): at fi.harism.curl.CurlView.onTouch(CurlView.java:280) 12-04 10:20:50.781: E/AndroidRuntime(3236): at android.view.View.dispatchTouchEvent(View.java:5583) 12-04 10:20:50.781: E/AndroidRuntime(3236): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1968) 12-04 10:20:50.781: E/AndroidRuntime(3236): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1695) 12-04 10:20:50.781: E/AndroidRuntime(3236): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1968) 12-04 10:20:50.781: E/AndroidRuntime(3236): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1695) 12-04 10:20:50.781: E/AndroidRuntime(3236): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1968)

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Here is part of my work that load the bitmap image. Can someone help me how to handle this out of memory error, through some researh i saw this blog java.lang.OutOfMemoryError BitmapFactory.nativeDecodeAsset() but i can't apply it to the method loadBitmap below.

private Bitmap loadBitmap(int width, int height, int index) { Bitmap b = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); b.eraseColor(0xFFFFFFFF); c = new Canvas(b); d = getResources().getDrawable(mBitmapIds[index]); System.out.println("canvas width: "+c.getWidth()); int margin = 3;//7 int border = 3;//2 Rect r = new Rect(margin, margin, width - margin, height - margin); int imageWidth = r.width() - (border * 2); int imageHeight = imageWidth * d.getIntrinsicHeight() / d.getIntrinsicWidth(); if (imageHeight > r.height() - (border * 2)) { imageHeight = r.height() - (border * 2); imageWidth = imageHeight * d.getIntrinsicWidth() / d.getIntrinsicHeight(); } Log.d("TAG", String.valueOf(imageHeight)); if (lp.getWindow().getWindowManager().getDefaultDisplay() .getOrientation() == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT) { // portrait mode r.left += ((r.width() - imageWidth) / 2) - border; r.right = r.left + imageWidth + border + border; } else if (lp.getWindow().getWindowManager().getDefaultDisplay() .getOrientation() == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) { // landscape r.left += ((r.width() - imageWidth)) - border-122; r.right = r.left + imageWidth + border + border+122; } r.top += ((r.height() - imageHeight) / 2) - border; r.bottom = r.top + imageHeight + border + border; Paint p = new Paint(); p.setColor(0xFFC0C0C0); c.drawRect(r, p); r.left += border; r.right -= border; r.top += border; r.bottom -= border; d.setBounds(r); d.draw(c); return b; }*

UPDATE: The page are updated when sliding using this method

@Override public void updatePage(CurlPage page, int width, int height, int index) {

 DisplayMetrics displaymetrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(displaymetrics); int wwidth = displaymetrics.widthPixels; int hheight = displaymetrics.heightPixels; if(wwidth > hheight){ System.out.println("index "+(index*2)); System.out.println("index2 "+(index*2)+1); System.out.println("case landscape orientation..."); if (index >0){ front = loadBitmap(width, height, (index*2)); back = loadBitmap(width, height, (index*2)+1); }else { front = loadBitmap(width, height, (index)); back = loadBitmap(width, height, (index)); } Matrix matrix = new Matrix(); matrix.preScale(-1.0f, 1.0f); Bitmap mirroredBitmap = Bitmap.createBitmap(back, 0, 0, back.getWidth(), back.getHeight(), matrix, false); page.setTexture(front, CurlPage.SIDE_FRONT); page.setTexture(mirroredBitmap, CurlPage.SIDE_BACK); } else { System.out.println("case portrait orientation..."); Bitmap front = loadBitmap(width, height, index); Bitmap back = loadBitmap(width, height, index); System.out.println( "MyActivity.onCreate debug message "+String.valueOf(index)); page.setTexture(front, CurlPage.SIDE_FRONT); page.setTexture(back, CurlPage.SIDE_BACK); } } }
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  • Have you seen this: stackoverflow.com/q/477572/827110? Also post you code (adapter or something) where you are swiping/displaying images.. Commented Dec 4, 2013 at 6:29
  • Do you store page objects in a list or something? The old page objects that have been viewed already are still alive in the memory causing the memory to overflow.. you will have to device a way to detect those pages that have been viewed and re-cycle the images in them. If you post more code then maybe I can give a concrete way of doing it Commented Dec 4, 2013 at 7:18
  • Hi Amulya I am using Harism page curl library github.com/harism/android_page_curl you can refer to it Commented Dec 4, 2013 at 7:20

4 Answers 4

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You are properbly leaking memory. Check that you free your memory by removing all references to it to avoid this problem. Also keep in mind that some devices have not much memory so you need to use less memory.

See also my answer about how to find memory leaks.

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That a general issue while playing with lots of images. Nikita I suggest you to use an api library that takes care of loading the images, clearing the cache when image is out of foucs and other essential things. Here is the link of the github project, download the jar and add it to the libs folder of your project.

For Configuring the image check this.

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Images are in my assets folder
You can surely give the path of the asset, just google how to access the path. Some thing like this file:///android_asset/
sorry hardik my mistake its in drawable folder in an array of images. private int[] mBitmapIds = {R.drawable.image1, R.drawable.image2,R.drawable...}
No Problem, I hope you don't get OOM any more.
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There maybe memory leak. You can call bitmap.recycle() , if that bitmap has no further use, to save memory. Also, you can try to scale down your bitmap:

Bitmap scale_down = Bitmap.createScaledBitmap(original_bmp, original_bmp.getWidth()/2, original_bmp.getHeight()/2, true);
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I do not see your all codes , so I can only suppose that you put all image into memory . I thing that you could put the image what showing in screen into memory ,and the other image release from memory, This way can be realized and reduce the occupied memory,. Please read this :Strange out of memory issue while loading an image to a Bitmap object

I am sorry for my bad english!

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