Question

我正在写文件上的数据，我正在使用ArrayList，但我的主要问题是如何在文本文件中添加新行。是否可以这样做。

这样一种方式，当ArrayList的第一个数据写入文本文件而不是在新行中自动写入ArrayList的下一个数据时

 final String FILES = "/MY_FILE_FOLDER";

 String path= Environment.getExternalStorageDirectory().getPath()+FILES; // Folder path

 File folderFile = new File(path);
  if (!folderFile.exists()) {
    folderFile.mkdirs();
   }

 File myFile = new File(folderFile, fileName+".doc");
 myFile.createNewFile();

 FileOutputStream fOut = new FileOutputStream(myFile);
 OutputStreamWriter myOutWriter = new OutputStreamWriter(fOut);

 for (int i = 0; i < getdata.size(); i++) {
    myOutWriter.append(getdata.get(i)); 
 }


 myOutWriter.close();
 fOut.close();
 Toast.makeText(getBaseContext(),
        "Done writing SD 'mysdfile.txt'",
        Toast.LENGTH_SHORT).show();

Answer 1

更改，

for (int i = 0; i < getdata.size(); i++) {
    myOutWriter.append(getdata.get(i)); 
}

到

for (int i = 0; i < getdata.size(); i++) {
    myOutWriter.append(getdata.get(i)); 
    myOutWriter.append("\n\r");
}

我希望这会有所帮助!!

Answer 2

尝试这种方式，

FileOutputStream fOut = new FileOutputStream(myFile);

BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(fOut));

  for (int i = 0; i < getdata.size(); i++) {
    bw.write(getdata.get(i));
    bw.newLine();
  }

bw.close();

fOut.close();

Answer 3

for (int i = 0; i < getdata.size(); i++) {
    myOutWriter.append(getdata.get(i)); 
    myOutWriter.append("\n\r");
}

Answer 4

以下代码肯定适用于任何人..

FileOutputStream writer = new FileOutputStream(gpxfile);
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(writer));
String str ="Apple,Fruit : Cabbage,Vegetable";

StringTokenizer strr = new StringTokenizer(str, ":");
        while (strr.hasMoreTokens()) {
            bw.write(strr.nextToken()+"\r\n");
        }
bw.flush();
writer.flush();
bw.close();
writer.close();

如何在android中的文本文件中添加新行

4 个答案: