Android—将Bitmap图片保存到SD卡目录下或者指定目录

直接上代码就不废话啦

一：保存到SD卡下

File file = new File(Environment.getExternalStorageDirectory(), System.currentTimeMillis()+".jpg");try {out = new FileOutputStream(file);btImage.compress(Bitmap.CompressFormat.JPEG, 90, out);System.out.println("___________保存的__sd___下_______________________");} catch (FileNotFoundException e) {e.printStackTrace();}try {out.flush();out.close();} catch (IOException e) {e.printStackTrace();}Toast.makeText(HahItemActivity.this,"保存已经至"+Environment.getExternalStorageDirectory()+"下", Toast.LENGTH_SHORT).show(); }

上面的方法就是直接定义一个文件的路径，和图片的名称，然后保存.

二：保存Bitmap到指定的SD卡文件夹目录下

想想也知道，这个必须先有个文件夹，才能把图片保存这里面，那就按照思路学代码吧

 if (Environment.getExternalStorageState().equals( Environment.MEDIA_MOUNTED)) // 判断是否可以对SDcard进行操作 {  // 获取SDCard指定目录下 String  sdCardDir = Environment.getExternalStorageDirectory()+ "/CoolImage/"; File dirFile  = new File(sdCardDir);  //目录转化成文件夹 if (!dirFile .exists()) {//如果不存在，那就建立这个文件夹dirFile .mkdirs(); }//文件夹有啦，就可以保存图片啦 File file = new File(sdCardDir, System.currentTimeMillis()+".jpg");// 在SDcard的目录下创建图片文,以当前时间为其命名try {out = new FileOutputStream(file);btImage.compress(Bitmap.CompressFormat.JPEG, 90, out);System.out.println("_________保存到____sd______指定目录文件夹下____________________");} catch (FileNotFoundException e) {e.printStackTrace();}try {out.flush();out.close();} catch (IOException e) {e.printStackTrace();}Toast.makeText(HahItemActivity.this,"保存已经至"+Environment.getExternalStorageDirectory()+"/CoolImage/"+"目录文件夹下", Toast.LENGTH_SHORT).show(); }

注：访问权限注意哦

关于图片的 SD卡的
未完待续

 //将Bitmap图片保存到sd卡    protected void saveBitmapToSD(Bitmap bt) {        File path = Environment.getExternalStorageDirectory();        File file = new File(path, System.currentTimeMillis() + ".jpg");        System.out.println(Environment.getExternalStorageState() + "/Cool/" +"000000000000000000000000000");        try {            FileOutputStream  out = new FileOutputStream(file);            bt.compress(Bitmap.CompressFormat.JPEG, 90, out);        } catch (FileNotFoundException e) {            e.printStackTrace();        }        out.flush();        out.close();    }    /**     * 保存bitmap到SD卡     * @param bitName 保存的名字     * @param mBitmap 图片对像     * return 生成压缩图片后的图片路径     */    public static String saveMyBitmap(String bitName,Bitmap mBitmap) {        File f = new File("/sdcard/" + bitName + ".png");        try {            f.createNewFile();        } catch (IOException e) {            System.out.println("在保存图片时出错：" + e.toString());        }        FileOutputStream fOut = null;        try {            fOut = new FileOutputStream(f);        } catch (FileNotFoundException e) {            e.printStackTrace();        }        try {            mBitmap.compress(Bitmap.CompressFormat.PNG, 100, fOut);        } catch (Exception e) {            return "create_bitmap_error";        }        try {            fOut.flush();        } catch (IOException e) {            e.printStackTrace();        }        try {            fOut.close();        } catch (IOException e) {            e.printStackTrace();        }        return "/sdcard/" + bitName + ".png";    }    /**     * 保存bitmap到SD卡     * @param bitmap     * @param imagename     */    public static String saveBitmapToSDCard(Bitmap bitmap, String imagename) {        String path = "/sdcard/" + "img-" + imagename + ".jpg";        FileOutputStream fos = null;        try {            fos = new FileOutputStream(path);            if (fos != null) {                bitmap.compress(Bitmap.CompressFormat.JPEG, 90, fos);                fos.close();            }            return path;        } catch (Exception e) {            e.printStackTrace();        }        return null;    }

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