（原）Eclipse的java中文件读写

1 在<uses-sdk…/>下面添加permission

<uses-sdk        android:minSdkVersion="16"        android:targetSdkVersion="16" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />

2在onCreate函数的下面添加如下代码：

 1     //写SD中的文件 2     public void writeFileSdcardFile(String fileName,byte [] bytes) throws IOException 3     {    4         try 5         {    6             FileOutputStream fout = new FileOutputStream(fileName);    7             fout.write(bytes);    8             fout.close();    9         }  10         catch(Exception e)11         {   12             e.printStackTrace();   13         }   14     }   15                   16     //读SD中的文件   17     public void readFileSdcardFile(String fileName, byte [] bytes) throws IOException18     {    19         try20         {   21             FileInputStream fin = new FileInputStream(fileName);   22             fin.read(bytes);       23             fin.close();       24         }   25         catch(Exception e)26         {   27             e.printStackTrace();   28         }      29     }

3调用处：

 1         byte [] buffer = new byte[width*height];    2  3         try  //读文件 4         { 5             readFileSdcardFile("/mnt/sdcard/2.raw", buffer); 6         }  7         catch (IOException e)  8         { 9             // TODO Auto-generated catch block10             e.printStackTrace();11         }12     13         //your program...14      15         byte[] arraydst2 = new byte [width*height];16         try  //写文件17         {18             writeFileSdcardFile("/mnt/sdcard/2out.raw",arraydst2);19         } 20         catch (IOException e) 21         {22             // TODO Auto-generated catch block23             e.printStackTrace();24         }

4 主要参考：

http://blog.csdn.net/ztp800201/article/details/7322110

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