Android，解析來自同一 class 的對象中的文本文件時出現問題

Question

我創建了一個名為uno的GpsSession class 實例，然后調用了uno.loadSessionFile() 。 該文件已正確解析，但是創建另一個名為dos的GpsSession並調用dos.loadSessionFile()會導致在文件讀取和解析期間跳過許多行。 我錯過了什么嗎？ 附上我項目的簡化（但經過測試）class，以及測試運行的日志這是 Class：

public class GpsSession {


MainActivity main;
Context context;



String sessionsFolder = Environment.getExternalStorageDirectory() + "/MyFolder/Sessions/";
String sessionFileName;


public GpsSession(MainActivity _main){

    main = _main;
    context = main.getApplicationContext();
}




public boolean loadSessionFile(String _fileName){


        Log.d("CHRONO", "loading " + _fileName);


    if(_fileName == null) {
        return false;}


    File file = new File(sessionsFolder + _fileName);
    if(!file.exists()){

            Log.d("CHRONO", "file don't exists, returning false");

        return false;
    }


    sessionFileName = sessionsFolder + _fileName;

    ArrayList <String>storedValues = new ArrayList<>();
    BufferedReader br = null;

    int lineNumber = 0;

    String line;

    storedValues.clear();



    //copy all the lines to arraylist


    try {
        br = new BufferedReader( new FileReader(sessionFileName));

        while((line = br.readLine()) != null)
        {
            storedValues.add(line);

                Log.d("CHRONO", "found line :" + lineNumber);


            lineNumber++;
        }
    } catch (FileNotFoundException e) {
         e.printStackTrace();
        Toast.makeText(context,context.getString(R.string.file_not_found), Toast.LENGTH_LONG).show();

    } catch (IOException e) {

        e.printStackTrace();
        Toast.makeText(context, context.getString(R.string.error_reading_file) + " IO", Toast.LENGTH_LONG).show();

    }catch (Exception e) {
        e.printStackTrace();
        Toast.makeText(context, context.getString(R.string.error_reading_file) + " E", Toast.LENGTH_LONG).show();

    }finally {

        if(br!=null)
            try {
                br.close();
            } catch(IOException e) {
                e.printStackTrace();
            }
    }


    //then parse them in array "parts"



    for(int i = 0;i < storedValues.size();i++){
        String[] parts = storedValues.get(i).split(",");

            Log.d("CHRONO", "parsing line--" + i);
            if(parts.length > 0) {
                Log.d("CHRONO", "val= " + parts[0]); }

    }


    return true;

}

這是測試運行：

GpsSession uno = new GpsSession(this);

    uno.loadSessionFile("dex.rcs");

    GpsSession dos = new GpsSession(this);

    dos.loadSessionFile("cip.rcs");

這是創建 2 個GpsClass實例並loadSessionFile()的日志示例：請注意第二個文件調用的解析行 128，有時

     loading dex.rcs
found line :0
found line :1
found line :2
found line :3
found line :4
found line :5
found line :6
found line :7
found line :8
found line :9
found line :10
found line :11
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found line :154
found line :155
found line :156
found line :157
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found line :159
parsing line--0
val= Race session file generated with yougarage data format
parsing line--1
val= date created <<Wed Nov 13 08:04:17 GMT+01:00 2019>>
parsing line--2
val= track name <<<listino.trk>>>
parsing line--3
val= "lap"
parsing line--4
val= 1
parsing line--5
val= 1
parsing line--6
val= 1
parsing line--7
val= 1
parsing line--8
val= 1
parsing line--9
val= 1
parsing line--10
val= 1
parsing line--11
val= 1
parsing line--12
val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
parsing line--18
val= 1
parsing line--19
val= 1
parsing line--20
val= 1
parsing line--21
val= 1
parsing line--22
val= 1
parsing line--23
val= 1
parsing line--24
val= 1
parsing line--25
val= 1
parsing line--26
val= 1
parsing line--27
val= 1
parsing line--28
val= 1
parsing line--29
val= 1
parsing line--30
val= 1
parsing line--31
val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 1
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
parsing line--115
val= 2
parsing line--116
val= 2
parsing line--117
val= 2
parsing line--118
val= 2
parsing line--119
val= 2
parsing line--120
val= 2
parsing line--121
val= 2
parsing line--122
val= 2
parsing line--123
val= 2
parsing line--124
val= 2
parsing line--125
val= 2
parsing line--126
val= 2
parsing line--127
val= 2
parsing line--128
val= 2
parsing line--129
val= 2
parsing line--130
val= 2
parsing line--131
val= 2
parsing line--132
val= 2
parsing line--133
val= 2
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val= 2
parsing line--135
val= 2
parsing line--136
val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
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val= 2
parsing line--152
val= 2
parsing line--153
val= 2
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val= 2
parsing line--155
val= 2
parsing line--156
val= 2
parsing line--157
val= 2
parsing line--158
val= 2
parsing line--159
val= 2
loading cip.rcs
found line :0
found line :1
found line :2
found line :3
found line :4
found line :5
found line :6
found line :7
found line :8
found line :9
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parsing line--0
val= Race session file generated with yougarage data format
parsing line--1
val= date created <<Mon Nov 18 05:33:37 GMT+01:00 2019>>
parsing line--2
val= track name <<<listino.trk>>>
parsing line--3
val= "lap"
parsing line--4
val= 1
parsing line--5
val= 1
parsing line--6
val= 1
parsing line--7
val= 1
parsing line--8
val= 1
parsing line--9
val= 1
parsing line--10
val= 1
parsing line--11
val= 1
parsing line--12
val= 1
parsing line--13
val= 1
parsing line--14
val= 1
parsing line--15
val= 1
parsing line--16
val= 1
parsing line--17
val= 1
parsing line--18
val= 1
parsing line--19
val= 1
parsing line--20
val= 1
parsing line--21
val= 1
parsing line--22
val= 1
parsing line--23
val= 1
parsing line--24
val= 1
parsing line--25
val= 1
parsing line--26
val= 1
parsing line--27
val= 1
parsing line--28
val= 1
parsing line--29
val= 1
parsing line--30
val= 1
parsing line--31
val= 1
parsing line--32
val= 1
parsing line--33
val= 1
parsing line--34
val= 1
parsing line--35
val= 1
parsing line--36
val= 1
parsing line--37
val= 1
parsing line--38
val= 1
parsing line--39
val= 1
parsing line--40
val= 1
parsing line--41
val= 1
parsing line--42
val= 1
parsing line--43
val= 1
parsing line--44
val= 1
parsing line--45
val= 1
parsing line--46
val= 1
parsing line--47
val= 1
parsing line--48
val= 1
parsing line--49
val= 1
parsing line--50
val= 1
parsing line--51
val= 1
parsing line--52
val= 1
parsing line--53
val= 1
parsing line--54
val= 1
parsing line--55
val= 1
parsing line--56
val= 1
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val= 1
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val= 1
parsing line--59
val= 1
parsing line--60
val= 1
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val= 1
parsing line--62
val= 1
parsing line--63
val= 1
parsing line--64
val= 1
parsing line--65
val= 1
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val= 1
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val= 1
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val= 1
parsing line--69
val= 1
parsing line--70
val= 1
parsing line--71
val= 1
parsing line--72
val= 1
parsing line--73
val= 1
parsing line--74
val= 2
parsing line--75
val= 2
parsing line--76
val= 2
parsing line--77
val= 2
parsing line--78
val= 2
parsing line--79
val= 2
parsing line--80
val= 2
parsing line--81
val= 2
parsing line--82
val= 2
parsing line--83
val= 2
parsing line--84
val= 2
parsing line--85
val= 2
parsing line--86
val= 2
parsing line--87
val= 2
parsing line--88
val= 2
parsing line--89
val= 2
parsing line--90
val= 2
parsing line--91
val= 2
parsing line--92
val= 2
parsing line--93
val= 2
parsing line--94
val= 2
parsing line--95
val= 2
parsing line--96
val= 2
parsing line--97
val= 2
parsing line--98
val= 2
parsing line--99
val= 2
parsing line--100
val= 2
parsing line--101
val= 2
parsing line--102
val= 2
parsing line--103
val= 2
parsing line--104
val= 2
parsing line--105
val= 2
parsing line--106
val= 2
parsing line--107
val= 2
parsing line--108
val= 2
parsing line--109
val= 2
parsing line--110
val= 2
parsing line--111
val= 2
parsing line--112
val= 2
parsing line--113
val= 2
parsing line--114
val= 2
parsing line--115
val= 2
parsing line--116
val= 2
parsing line--117
val= 2
parsing line--118
val= 2
parsing line--119
val= 2
parsing line--120
val= 2
parsing line--121
val= 2
parsing line--122
val= 2
parsing line--123
val= 2
parsing line--124
val= 2
parsing line--125
val= 2
parsing line--126
val= 2
parsing line--127
val= 2
parsing line--128
val= 2
val= 2
parsing line--188
parsing line--220
parsing line--240
val= 2

Answer 1

經過進一步調查，我發現問題與我用於測試的設備有關。 代碼已執行，但會隨機跳過 Log.d 調用。 該設備是小米紅米5 Plus。