读入和写入内存

引用来的没有亲测 备用吧

FileOutputStream fos = openFileOutput("urls.txt", Context.MODE_PRIVATE);?
fos.write("Alex".getBytes());?
fos.close();?

?

FileInputStream fis = openFileInput("urls.txt");?
int c;?
while((c=fis.read())!=-1)?
? ? ? ? {?
?
? ? ? ? ? ? k += (char)c;?
? ? ? ? }?
fis.close();?
http://developer.android.com/guide/topics/data/data-storage.html#filesInternal