这个我好像做过！
public void saveBitmap(Bitmap bitmap) throws IOException {
File file = new File("/sdcard/" + "image.png");
FileOutputStream out;
try {
out = new FileOutputStream(file);
if (bitmap.compress(Bitmap.CompressFormat.PNG, 70, out)) {
out.flush();
out.close();
Values.bolSignView=true;
Toast.makeText(TouchPaint.this,
"Your sign pic has been stored.",
Toast.LENGTH_LONG).show();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
传入的参数为你创建的bitmap,并在上面进行操作的。
mBitmap = Bitmap.createBitmap(480, 780, Bitmap.Config.ARGB_8888);
mCanvas = new Canvas(mBitmap);
