VM不允许我们分配**字节
VM不允许我们分配**字节
我的应用程序想要分配2529792字节的内存,在拥有128MB内存的设备上运行正常,但在拥有292MB可用内存的HTC上运行时报错。错误信息如下:\n01-14 21:08:27.972: E/GraphicsJNI(26585): VM won\'t let us allocate 2529792 bytes\n以下是我的LogCat输出:\n01-14 21:08:27.391: E/dalvikvm-heap(26585): 2529792字节的外部分配对于此进程过大。\n01-14 21:08:27.411: E/dalvikvm(26585): 内存不足:Heap Size=17735KB,已分配=14425KB,Bitmap Size=14641KB,Limit=32768KB\n01-14 21:08:27.411: E/dalvikvm(26585): Trim info: Footprint=17735KB,Allowed Footprint=17735KB,Trimmed=668KB\n01-14 21:08:27.512: E/GraphicsJNI(26585): VM won\'t let us allocate 2529792 bytes\n01-14 21:08:27.512: D/dalvikvm(26585): GC_FOR_MALLOC已释放905K,剩余内存24%,13520K/17735K,外部内存14641K/16689K,暂停93毫秒\n01-14 21:08:27.652: D/dalvikvm(26585): GC_EXTERNAL_ALLOC已释放3K,剩余内存24%,13552K/17735K,外部内存14641K/16689K,暂停116毫秒\n01-14 21:08:27.662: D/skia(26585): --- decoder->decode返回false\n01-14 21:08:27.792: D/dalvikvm(26585): GC_EXTERNAL_ALLOC已释放13K,剩余内存24%,13655K/17735K,外部内存14641K/16689K,暂停109毫秒\n01-14 21:08:27.872: E/dalvikvm-heap(26585): 2529792字节的外部分配对于此进程过大。\n01-14 21:08:27.872: E/dalvikvm(26585): 内存不足:Heap Size=17735KB,已分配=13655KB,Bitmap Size=14641KB,Limit=32768KB\n01-14 21:08:27.872: E/dalvikvm(26585): Trim info: Footprint=17735KB,Allowed Footprint=17735KB,Trimmed=1408KB\n01-14 21:08:27.972: E/GraphicsJNI(26585): VM won\'t let us allocate 2529792 bytes\n01-14 21:08:27.972: D/dalvikvm(26585): GC_FOR_MALLOC已释放39K,剩余内存24%,13615K/17735K,外部内存14641K/16689K,暂停96毫秒\n01-14 21:08:28.092: D/dalvikvm(26585): GC_EXTERNAL_ALLOC已释放40K,剩余内存24%,13579K/17735K,外部内存14641K/16689K,暂停102毫秒\n01-14 21:08:28.212: D/dalvikvm(26585): GC_EXTERNAL_ALLOC已释放41K,剩余内存24%,13574K/17735K,外部内存14641K/16689K,暂停103毫秒\n01-14 21:08:28.212: W/dalvikvm(26585): 线程id=17:线程退出时发生未捕获的异常(组=0x4001d5a0)\n01-14 21:08:28.252: E/dalvikvm-heap(26585): 2529792字节的外部分配对于此进程过大。\n01-14 21:08:28.252: E/dalvikvm(26585): 内存不足:Heap Size=17735KB,已分配=13585KB,Bitmap Size=13902KB,Limit=32768KB\n01-14 21:08:28.252: E/dalvikvm(26585): Trim info: Footprint=17735KB,Allowed Footprint=17735KB,Trimmed=1468KB\n01-14 21:08:28.352: E/GraphicsJNI(26585): VM won\'t let us allocate 2529792 bytes\n有人能帮我吗?谢谢。
问题:VM won't let us allocate ** bytes
原因:可能是由于内存不足导致的问题。
解决方法:
1. 在Manifest.xml文件中尝试添加android:largeHeap="true",以增加应用程序的堆内存大小。
2. 如果涉及到位图处理,可以使用BitmapOptions进行处理。可以参考以下代码:
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)) > IMAGE_MAX_SIZE) { scale++; } Log.d(TAG, "scale = " + scale + ", orig-width: " + o.outWidth + ", orig-height: " + o.outHeight); Bitmap b = null; in = mContentResolver.openInputStream(uri); if (scale > 1) { scale--; // scale to max possible inSampleSize that still yields an image // larger than target o = new BitmapFactory.Options(); o.inSampleSize = scale; b = BitmapFactory.decodeStream(in, null, o); // resize to desired dimensions int height = b.getHeight(); int width = b.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(b, (int) x, (int) y, true); b.recycle(); b = scaledBitmap; System.gc(); } else { b = BitmapFactory.decodeStream(in); } in.close(); Log.d(TAG, "bitmap size - width: " +b.getWidth() + ", height: " + b.getHeight()); return b; } catch (IOException e) { Log.e(TAG, e.getMessage(),e); return null; } }
以上是关于解决"VM won't let us allocate ** bytes"问题的原因和解决方法。