android - 将文本附加到文件末尾

Question

每次调用时，我都使用下面的代码段将文本写入文件的末尾。但是，它正在删除旧数据，然后将新数据写入文件的开头。如何修复以下代码，使其始终在文件末尾追加新数据？

public boolean writeToFile(String directory, String filename, String data ){
    File out;
    OutputStreamWriter outStreamWriter = null;
    FileOutputStream outStream = null;

    out = new File(new File(directory), filename);

    if ( out.exists() == false ){
                out.createNewFile();
    }

    outStream = new FileOutputStream(out) ;
    outStreamWriter = new OutputStreamWriter(outStream); 

    outStreamWriter.append(data);
    outStreamWriter.flush();
   }        

Answer 1

尝试在 FileOutputStream 中将 append boolean 值设置为 true:

outStream = new FileOutputStream(out, true);
outStreamWriter = new OutputStreamWriter(outStream);