java - 位图调整大小导致内存不足

Question

我有一个简单的类，用于根据我的要求调整位图图像的大小。有一个简单的方法负责它，如下所示:

public static Bitmap ResizeRichImages(Bitmap bitmap, Context mContext){
        try {
        float originalBitmapWidth = bitmap.getWidth();
        float originalBitmapHeight = bitmap.getHeight();
        float originalAspectRatio = originalBitmapWidth/originalBitmapHeight;
        double width_percentage = (0.05*screenWidthPixels(mContext));
        float newWidth = (float)((int)screenWidthPixels(mContext)-width_percentage);
        float newBitmapWidth = newWidth;
        float newBitmapHeight = newBitmapWidth/originalAspectRatio;
        bitmap = Bitmap.createScaledBitmap(bitmap, (int) newWidth, (int)newBitmapHeight, false);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return bitmap;

    }

这就是我调用这个方法的方式:

String URL = "https://maps.googleapis.com/maps/api/staticmap?center=-33.86527274921529,151.2050531328867&zoom=15&size=640x360&sensor=false&markers=color:blue%7Clabel:!%7C-33.86527274921529,151.2050531328867";

try {
bmp = Picasso.with(ViewStory.this).load(URL)
                                                            .get();
bmp = ImageController.ResizeRichImages(bmp, ViewStory.this);
                                                } catch (Exception e) {
                                                    e.printStackTrace();
                                                }

但是，几乎每次我在调用 ResizeRichImages 方法时都会遇到内存不足异常。我哪里出错了？

Answer 1

• 您可以尝试像下面的代码 fragment 一样进行压缩，而不是在 list 中使用 largeHeap 选项(该选项始终是最后一个选项)。

*

byteArrImage = null;

ByteArrayOutputStream baos = new ByteArrayOutputStream();
if(data != null) thumbnail = (Bitmap) data.getExtras().get("data");
if(thumbnail != null) {
    //thumbnail.compress(Bitmap.CompressFormat.PNG, 85, baos);
    thumbnail.compress(Bitmap.CompressFormat.JPEG, 85, baos);
    byteArrImage = baos.toByteArray();
    uploadImageToServer();
}