据我所知，使用 BitmapFactory 可以将文件转换为位图，但有什么办法一个位图图像转换成一个文件？

I understand that using BitmapFactory can convert a File to a Bitmap, but is there any way to convert a Bitmap image to a File?

推荐答案

试试这个：

    bitmap.compress(Bitmap.CompressFormat.PNG, quality, outStream);

检查http://developer.android.com/reference/android/graphics/Bitmap.html#com$p$pss(android.graphics.Bitmap.Com$p$pssFormat,%20int,%20java.io.OutputStream%29