android - 如何从可绘制资源中获取字节数组？

Question

我想从我的 res/drawable 文件中的 jpeg 图像中获取一个字节数组？

请问有谁知道该怎么做？

Answer 1

    Drawable drawable;

    Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap();
    ByteArrayOutputStream stream = new ByteArrayOutputStream();
    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
    byte[] bitmapdata = stream.toByteArray();

Answer 2

Get a bitmap decodeResource(android.content.res.Resources, int) Then either compress it to ByteArrayOutputStream() or copyPixelsToBuffer and get your array from the buffer. http://developer.android.com/reference/android/graphics/Bitmap.html

Answer 3

ByteArrayOutputStream stream = new ByteArrayOutputStream();
mPhoto.compress(Bitmap.CompressFormat.JPEG /* FileType */,
                        100 /* Ratio */, stream);

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