为什么我的方法不附加 csv 文件?

Why is my method don't append the csv-file?

我尝试将 GPS 数据从我的 Android 7 智能手机导出到 .csv 文件一段时间,只要 isSaveCSV() 为真。

public void saveCSVfile() {
    if (isSaveCSV()) {
        Long time = System.currentTimeMillis()/1000;
        String entry =time.toString()+","+lat+","+lon+"\n";
        if (csv_created==false) {
            csv_created=true;
            FILECOUNT++;
            NEWFILENAME = FILENAME+FILECOUNT+".csv";
            File myDir = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + "tensorflow");
            csvfile = new File(myDir, NEWFILENAME);
            try {
                FileOutputStream out = new FileOutputStream(csvfile);
                out.write( entry.getBytes() );
                out.close();
            } catch (final Exception e) {
                LOGGER.e(e, "Exception!");
            }
        }else {

            try {
                entry="TESTFORFOOSAKE";
               FileOutputStream out = openFileOutput(csvfile.getName(), Context.MODE_APPEND);
                out.write(entry.getBytes());
                out.close();
            } catch (final Exception e) {
                LOGGER.e(e, "Exception!");
            }
        }
    }else {
        csv_created=false;
    }
}

文件总是一行..我没见过双行文件..

如果你想追加到现有文件,你应该使用带布尔参数的重载构造函数:

FileOutputStream out = new FileOutputStream(csvfile, true);
// Here ---------------------------------------------^