安卓文件读写

获取各种路径：

http://blog.csdn.net/qq_26296197/article/details/51909423 

内部保存：

http://blog.csdn.net/csdnzouqi/article/details/51938883  

http://www.cnblogs.com/LiHuiGe8/p/5604725.html 

http://www.cnblogs.com/bastard/archive/2013/03/04/2943302.html 

外部保存：

例子：

内部保存：

1. 获取缓存路径  主要时context对象。handler是做其他留下来的很本例程无关

    public TCPView(Handler handler, Context context){
        this.mHandler = handler;
        this.jpeg = new JpegStream();
//        LocalPhoto = Environment.getDownloadCacheDirectory().getPath();
        LocalPhoto = context.getCacheDir().getPath();

    }

2. 保存

private  File getFileFromBytes(byte[] b, String outputFile) {
        BufferedOutputStream stream = null;
        FileOutputStream fstream = null;
        File file = null;
        try {
            file = new File(outputFile,"1.jpg");
            if(file.exists()) {
                file.delete();
            }
            file.createNewFile();
            fstream = new FileOutputStream(file);
            stream = new BufferedOutputStream(fstream);
            stream.write(b);
            stream.flush();
            fstream.flush();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (stream != null) {
                try {
                    stream.close();
                } catch (IOException e1) {
                    e1.printStackTrace();
                }
                if (fstream != null) {
                    try {
                        fstream.close();
                    } catch (Exception e2) {
                        e2.printStackTrace();
                    }
                }
            }
        }

        return file;
    }

3. 使用即可