Java tutorial
//package com.java2s; //License from project: Apache License import android.graphics.Bitmap; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; public class Main { public static final String FileSavePath = "/mnt/sdcard/BoYue/"; public static void saveMyBitmap(Bitmap mBitmap) { File f = new File(FileSavePath + "qrcode.png"); try { f.createNewFile(); } catch (IOException e) { } FileOutputStream fOut = null; try { fOut = new FileOutputStream(f); } catch (Exception e) { e.printStackTrace(); } mBitmap.compress(Bitmap.CompressFormat.PNG, 100, fOut); try { fOut.flush(); } catch (IOException e) { e.printStackTrace(); } try { fOut.close(); } catch (IOException e) { e.printStackTrace(); } } }