如何从.txt文件中读取 [英] How to read from .txt file

问题描述

我试图从文件中读取是在服务器上present文本，包含文本文件的Hello World，现在我想要写的TextView这个文本。我有进口所有需要的软件包。在此先感谢

 公共无效的onCreate（捆绑savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.main）;        TextView的电视=新的TextView（本）;        尝试{
            网址器updateURL =新的URL（HTTP：//--------------------/foldername/hello.txt）;
            康涅狄格州的URLConnection = updateURL.openConnection（）;
            InputStream为= conn.getInputStream（）;
            二BufferedInputStream为=新的BufferedInputStream（是）;
            ByteArrayBuffer BAF =新ByteArrayBuffer（50）;            INT电流= 0;
            而（（电流= bis.read（））！=  -  1）{
                 baf.append（（字节）电流）;
            }
            最后一个String =新的String（baf.toByteArray（））;
            （（的TextView）TV）.setText（S）;        }赶上（例外五）{
        }
    };
 

解决方案

试试这个功能....

 公共静态字符串convertStreamToString（InputStream为）抛出异常{
        读者的BufferedReader =新的BufferedReader（新的InputStreamReader（是））;
        StringBuilder的SB =新的StringBuilder（）;
        串线= NULL;        而（（行= reader.readLine（））！= NULL）{
            sb.append（线）;
        }        is.close（）;        返回sb.toString（）;
    }
 

i am trying to read the text from a file which is present on server, this file containing the text "hello world" ,now i want to write this text on TextView . i have imported all required packages . thanks in advance

 public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        TextView tv = new TextView(this);

        try {
            URL updateURL = new URL("http://--------------------/foldername/hello.txt");                
            URLConnection conn = updateURL.openConnection(); 
            InputStream is = conn.getInputStream();
            BufferedInputStream bis = new BufferedInputStream(is);
            ByteArrayBuffer baf = new ByteArrayBuffer(50);

            int current = 0;
            while((current = bis.read()) != -1){
                 baf.append((byte)current);
            }


            final String s = new String(baf.toByteArray());     
            ((TextView)tv).setText(s); 





        } catch (Exception e) {
        }
    };

解决方案

try this function ....

 public static String convertStreamToString(InputStream is) throws Exception {
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();
        String line = null;

        while ((line = reader.readLine()) != null) {
            sb.append(line);
        }

        is.close();

        return sb.toString();
    }

这篇关于如何从.txt文件中读取的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！