拾取文件后找不到文件

时间:2017-10-05 05:27:01

标签: java android filepath filenotfoundexception filepicker

首先,如果这是一个简单的错误,我想道歉。我大多是自学成才,我所知道的是非常零星的,很可能是杂乱无章的。

我正在开发一个作为密码管理器的应用程序。它具有备份和恢复功能。我使用一个没有问题的固定目录工作,但在尝试添加文件选择器时,出现了问题。

保存文件位置没有任何问题。然后,在验证它已保存之后的一行,它表示该文件不存在。这是相关代码以及错误日志。我只会将代码包含在崩溃中,后面的内容是无关紧要的,但如果被问到可以提供。 PSync.psbk是尝试读取的文件。坦率地说,不知道出了什么问题,但我认为这很简单。

代码:

 Toast.makeText(Main.this, "Method properly called.", Toast.LENGTH_SHORT).show();
                //The file variable to imported.
                File file;

                try {
                    //Sets the file equal to the file found at the specified path.
                    //Used to access settings.
                    TinyDB database = new TinyDB(getApplicationContext());

                    String strfilePath = database.getString("FilePath");
                    Toast.makeText(Main.this, "Method properly called: " + strfilePath, Toast.LENGTH_SHORT).show();
                    file = new File(strfilePath);

                    //To be used to arrange the imported information.
                    ArrayList<String> strAcc = new ArrayList<>();
                    ArrayList<String> strUser = new ArrayList<>();
                    ArrayList<String> strPass = new ArrayList<>();
                    ArrayList<String> strAdditionalInfo = new ArrayList<>();

                    //To be used to store all the information for additional info variables. This is
                    //due to its multi-line nature requiring a slightly different method of 
                    //importation, the other variables are expected to be one line.
                    String strExtraInfo = "";

                    //Goes through the file and adds info to arrays for each corresponding variable.
                    //If the line does not have an identifier, it assumes it to be an additional
                    //info line, and will be processed later.
                    try (BufferedReader br = new BufferedReader(new FileReader(file))) {  //Line 776, as mentioned in err log.

错误日志:

 W/System.err: java.io.FileNotFoundException: /document/storage/emulated/0/Download/PSync.psbk (No such file or directory)
    10-04 21:16:32.843 19405-19405/com.example.brand.psync W/System.err:     at java.io.FileInputStream.open(Native Method)
    10-04 21:16:32.843 19405-19405/com.example.brand.psync W/System.err:     at java.io.FileInputStream.<init>(FileInputStream.java:146)
    10-04 21:16:32.843 19405-19405/com.example.brand.psync W/System.err:     at java.io.FileReader.<init>(FileReader.java:72)
    10-04 21:16:32.843 19405-19405/com.example.brand.psync W/System.err:     at com.example.brand.psync.Main.onRequestPermissionsResult(Main.java:776)

1 个答案:

答案 0 :(得分:1)

您尝试访问的路径是:

  

/document/storage/emulated/0/Download/PSync.psbk

路径中不应该有 / document 。存储路径时可能存在问题。