读取assets下的文件

try {

                    InputStream in = getResources().getAssets()
                            .open("data.txt");

                    int len = in.available();
                    byte[] b = new byte[len];
                    in.read(b);
                    str = new String(b, 0, len);
                    12                 
                } catch (Exception e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                    
                }