pcwiki的部落格

http://a77083018.pixnet.net/blog/post/130646862-%5Bandroid%5D-bitmap-%E8%AE%80%E5%8F%96-res-%E5%9C%96%E6%AA%94-%EF%BC%86%E5%9C%96%E6%AA%94%E4%B8%8D%E8%87%AA%E5%8B%95%E8%AA%BF%E6%95%B4

//設定Bitmap影像格式
BitmapFactory.Options options = new BitmapFactory.Options();
// Make sure it is 24 bit color as our image processing algorithm expects this format
options.inPreferredConfig = Config.ARGB_8888;
//設定不要自動scale圖片
options.inScaled = false;
//從res資料夾讀取test.bmp影像，存到bitmapOrig
Bitmap bitmapOrig = BitmapFactory.decodeResource(this.getResources(), R.drawable.test, options);