如何使用大量位图的工作​​，并避免错误：＆QUOT;位图的大小超过VM预算＆QUOT;？ [英] How to work with a lot of bitmaps and avoid the error: "bitmap size exceeds VM budget"?

问题描述

可能重复：结果
  安卓怪掉的内存问题的

我试图用1024×1024的位图4的工作，我需要在内存中四条，因为我创建画廊必须显示四个可缩放的位图以横向模式。

I'm trying to work with four bitmaps of 1024 x 1024, I need to have four in memory because I am creating a gallery that must show four zoomable bitmaps in landscape mode.

据工作摩托罗拉Droid 2.2.3，但它是失败的星系角宿一（2.1）。这是我得到斯皮卡异常：

It is working on Motorola Droid 2.2.3, but it is failing on galaxy spica (2.1). This is the exception that i get on spica:

02-28 15:45:25.963: ERROR/dalvikvm-heap(17109): 4194304-byte external allocation too large for this process.
02-28 15:45:25.968: ERROR/(17109): VM won't let us allocate 4194304 bytes
02-28 15:45:25.973: DEBUG/AndroidRuntime(17109): Shutting down VM
02-28 15:45:25.973: WARN/dalvikvm(17109): threadid=3: thread exiting with uncaught exception (group=0x4001b180)
02-28 15:45:25.973: ERROR/AndroidRuntime(17109): Uncaught handler: thread main exiting due to uncaught exception
02-28 15:45:25.988: ERROR/AndroidRuntime(17109): java.lang.OutOfMemoryError: bitmap size exceeds VM budget

如何解决此问题？

how to solve this?

感谢

推荐答案

您可以通过使用RGB_565与默认ARGB_8888削减了一半大小。

You can cut the size in half by using RGB_565 versus the default ARGB_8888.

• ARGB_8888要求每像素4个字节：4 * 1024 * 1024 = 4194304（4MB）

• ARGB_8888 requires 4 bytes per pixel: 4*1024*1024 = 4194304 (4mb)

RGB_565要求每个像素2个字节：2 * 1024 * 1024 = 2097152（2MB）

RGB_565 require 2 bytes per pixel: 2*1024*1024 = 2097152 (2mb)

您可以选择到 BitmapFactory 设置此。见<一href=\"http://developer.android.com/reference/android/graphics/BitmapFactory.Options.html#in$p$pferredConfig\"相对=nofollow>在preferredConfig

You can set this with options to the BitmapFactory. See inPreferredConfig

然而，即使这样，你还是会遇到困难。为什么不削减图像的大小下来呢？我怀疑你能无论如何显示1024×1024的图像。

However even with this you'll still have difficulty. Why not cut the size of the images down as well? I doubt you're able to show a 1024x1024 image anyway.

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