为什么我会得到同一个字符串的多个结果，以及它们为什么不同

Question

Im循环访问SDCard目录，读取每个文件中的文本以及将文本写入动态添加的textViews。每个文件都包含换行符，我认为它是问题所在。 我搜索过，和谷歌，尝试了一些建议，现在我的代码返回并打印每个文本文件两次。第一个只包含文本，直到第一个换行符为止，第二个文本打印文本完全是我需要的。 实施例文本文件test.txt

This is a test. 
    And I cannot make it work 

所需的输出是

test.txt 
    This is a test. 
    And I cannot make it work 

第一次视图添加我得到

test.txt 
    This is a test. 

第二时间时，得到所需的输出。为此，它会与所有TXT文件

这里是我的代码

String sdcard = Environment.getExternalStorageDirectory() + "/.BELIEVE/PushMessages/"; 

    // go to your directory 
    File fileList = new File(sdcard); 

    //check if dir is not null 
    if (fileList != null){ 

     // so we can list all files 
     File[] filenames = fileList.listFiles(); 

     // loop through each file 
     for (File tmpf : filenames){ 

     StringBuilder text = new StringBuilder(); 

      try { 
      BufferedReader br = new BufferedReader(new FileReader(tmpf)); 
      String name = tmpf.getName(); 
      String line; 

      while ((line = br.readLine()) != null) { 
      text.append(line); 
      text.append('\n'); 
      TextView title = new TextView(PushMessagesPage.this); 
      TextView message = new TextView(PushMessagesPage.this); 
      ll.addView(title); 
       title.setLayoutParams(textViewParams); 
      title.setTextAppearance(this, android.R.attr.textAppearanceLarge); 
      title.setTextColor(0xff33b5e5); 
      title.setText(name); 
      ll.addView(message);  
          message.setLayoutParams(textViewParams); 
      message.setTextColor(0xffffffff); 
      message.setText(text); 

什么是错的代码？

Answer 1

你的代码应该是这样的。

for (File tmpf : filenames) { 
    StringBuilder text = new StringBuilder(); 
    BufferedReader br = null; 
    try { 
     br = new BufferedReader(new FileReader(tmpf)); 
     String name = tmpf.getName(); 
     String line; 

     TextView title = new TextView(StackDemosActivity.this); 
     ll.addView(title); 
     title.setLayoutParams(textViewParams); 
     title.setTextAppearance(this, 
       android.R.attr.textAppearanceLarge); 
     title.setTextColor(0xff33b5e5); 
     title.setText(name); 

     TextView message = new TextView(StackDemosActivity.this); 
     ll.addView(message); 
     message.setLayoutParams(textViewParams); 
     message.setTextColor(0xffffffff); 

     while ((line = br.readLine()) != null) { 
      text.append(line); 
      text.append('\n'); 
     } 
     message.setText(text); 

    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
}