如何从文本文件中获取特定的行并在 android 中显示数组列表

Question

我有一个文本文件，我能够阅读全部内容并将其显示在视图中。文本文件的示例格式：-

## userdetail 

   [William]
   [Bits]
   6th cross road, City house.
   Rio.
   <051-22345690>|<002-22345690>

## calldetails

    income 22.
    out going 24.
    missed 21.


## Lorempsum
 Lorem Ipsum is simply dummy text of the printing and typesetting industry. 
 Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, 
 when an unknown printer took a galley of type and scrambled it to make a type specimen book 


## userot 
 It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout.

...... ………… ............

它喜欢更多 50 行

但我的要求是我需要从字段中获取特定数据 names.I 可以获得所有唯一 ID 的“## userot”值。但是我需要没有散列映射的中间数据的详细信息。数据有时也在下一行。我的意思是，在某些情况下我有 5 行，在其他方面有 10 行文字。所以我需要“##”下面的所有行直到下一个“##”–

朋友请给我解决办法？

Answer 1

使用下面的代码，它可能对你有帮助：-

String sAddr="";
        try {
            FileInputStream fileIn=c.openFileInput(LOGS_TEXT_FILE);
            InputStreamReader InputRead= new InputStreamReader(fileIn);

            char[] inputBuffer= new char[READ_BLOCK_SIZE];
            int charRead;

            while ((charRead=InputRead.read(inputBuffer))>0) {
                // char to string conversion
                String readstring=String.copyValueOf(inputBuffer,0,charRead);
                sAddr +=readstring;
            }
            InputRead.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
          String[]sAllAddrs = sAddr.split("\n"); // it would read the next line data and save it to a string.
          for(int i=0; i<sAllAddrs.length;i++){
                try {
                    //perform your logic to get those and write them...
                }catch(Exception e){
                    e.printStackTrace();
                }

Answer 2

下面的解决方案是找到“## userot”之后的所有行，直到下一个##

FileInputStream fileIn = openFileInput("mytextfile.txt");
InputStreamReader inputRead = new InputStreamReader(fileIn);
BufferedReader reader = new BufferedReader(inputRead);

while ((str = reader.readLine()) != null){
    if(str.contains("##") && str.contains("userot"){
        while ((str = reader.readLine()) != null){
            if(str.contains("##"))
              break;
            else
              Log.d("TAG","output: " + str);
        }
        break;
     }
}

Answer 3

 InputStream inputStream = getResources().openRawResource(R.raw.storydata);
    BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream), 8192);

    try {
        String line_1;
        while ((line_1 = reader.readLine()) != null)
        {
            while ((line_1 = reader.readLine()) != null)
            {
            if(line_1.contains("##") && line_1.contains("userot"))
            {
                while ((line_1 = reader.readLine()) != null)
                {
                    if(line_1.contains("##"))
                        break;
                    else
                        Toast.makeText(getBaseContext(), "" +line_1, Toast.LENGTH_LONG).show();
                }
                break;
            }


        }


        }
    } catch (IOException e)
    {
        throw new RuntimeException(e);
    }

逐行 reader 文本文件....感谢 Hussain Alaidarous 的完美工作....

如何从文本文件中获取特定的行并在 android 中显示数组列表

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