图片文件和Bitmap之间的转换

[code]
new DateFormat();
String name1 = DateFormat.format("yyyyMMdd_hhmmss",
                Calendar.getInstance(Locale.CHINA))
                + "_" + "TTTTTTTT" + ".jpg";
StringBuffer imagePATH = new StringBuffer("xxx文件夹路径");
imagePATH.append(name1);
String filePath = imagePATH.toString();
Bitmap bitmap=BitmapFactory.decodeFile(filePath);

[code]String filePath=imagePATH.toString();
Bitmap bitmap=BitmapFactory.decodeFile(filePath,getBitmapOption(2)); //将图片的长和宽缩小为原来的1/2

private Options getBitmapOption(int inSampleSize){
        System.gc();
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inPurgeable = true;
        options.inSampleSize = inSampleSize;
        return options;
}

[code]    public void saveBitmapFile(Bitmap bitmap){

                File file = new File(imagePATH.toString());//将要保存图片的路径
                try {
                        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file));
                        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, bos);
                        bos.flush();
                        bos.close();
                } catch (IOException e) {
                        e.printStackTrace();
                }
    }