如何通过文件流将很多图片存入SD卡,而不是自己内存

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2265100652 2014-10-11 09:56:27

文章标签 如何通过文件流将很多图片存入SD卡而不是自己内存 文章分类 后端开发

读懂它就可以了。

Integer[] picTbl = {
R.drawable.pic1,
R.drawable.pic2,
R.drawable.pic3,
R.drawable.pic4,
R.drawable.pic5,
R.drawable.pic6,
R.drawable.pic7,
R.drawable.pic8,
R.drawable.pic9,
R.drawable.pic10
};

   //把所有的图先保存到Sd卡本地

   void AllSaveBitmap()
   {
               String FileStr ="/pic";
               String FileStr1="";
               int k = 0;
               for(int i = 0 ; i < 10 ;i++)
            {
                     k = i +1;
                     FileStr1 = FileStr + k+".PNG";
                  BitmapFactory.Options opt = new BitmapFactory.Options();
               opt.inPreferredConfig = Bitmap.Config.ARGB_8888;
               opt.inPurgeable = true;
               opt.inInputShareable = true;
            bitmap = BitmapFactory.decodeFile("/sdcard/pic/" +FileStr1,opt);
            if(bitmap == null)
            {
                  mBitmap = ReadBitMap(mContext, picTbl);//
               mBitmapWidth = mBitmap.getWidth();
         mBitmapHeight = mBitmap.getHeight();
         bitmap=Bitmap.createScaledBitmap (mBitmap,mBitmapWidth,mBitmapHeight,true);
            //FileStr = FileStr + k+".PNG";
            SaveBitmap(bitmap,FileStr1);
            }
         }

   }

   //保存到本地
         public void SaveBitmap(Bitmap bmp,String FileStr)
         {
            Bitmap bitmap = Bitmap.createBitmap(bmp.getWidth(), bmp.getHeight(), Config.ARGB_8888);
//             Bitmap bitmap=Bitmap.createScaledBitmap (bmp,bmp.getWidth(), bmp.getHeight(),true);
            Canvas canvas = new Canvas(bitmap);
            //加载背景图片
//             Bitmap bmps = BitmapFactory.decodeResource(getResources(), R.drawable.playerbackground);
//             canvas.drawBitmap(bmps, 0, 0, null);
            //加载要保存的画面
            canvas.drawBitmap(bmp, 0, 0, null);
            //保存全部图层
            canvas.save(Canvas.ALL_SAVE_FLAG);
            canvas.restore();

            //存储路径
            File file = new File("/sdcard/pic/");
            if(!file.exists())
               file.mkdirs();
               try {
                     FileOutputStream fileOutputStream = new FileOutputStream(file.getPath() + FileStr);//"/xuanzhuan.jpg");
                     bmp.compress(Bitmap.CompressFormat.PNG, 100, fileOutputStream);
                     fileOutputStream.close();
                     System.out.println("saveBmp is here");
               } catch (Exception e) {
                           e.printStackTrace();
            }
         }