android 文件的读写--调用android自带的文件管理器选择文本文件读写从操作

这个天尝试着调用android自带的文件文件管理器读取文本文件----其中碰到了些问题--特来求助！！！！

其中调用文件管理器获取文件路径的代码：

private void chooseFile() {

        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);

        intent.setType("*/*");

        intent.addCategory(Intent.CATEGORY_OPENABLE);

        try {

            startActivityForResult(Intent.createChooser(intent, "选择文件"), FILE_SELECT_CODE);

        } catch (android.content.ActivityNotFoundException ex) {

            Toast.makeText(this, "没有文件管理器，请安装", Toast.LENGTH_SHORT).show();

        }

    }



    @Override

    public void onActivityResult(int requestCode, int resultCode, Intent data) {

        // TODO Auto-generated method stub

        if (resultCode != Activity.RESULT_OK) {

            Log.e(TAG, "onActivityResult() error, resultCode: " + resultCode);

            super.onActivityResult(requestCode, resultCode, data);

            return;

        }

        if (requestCode == FILE_SELECT_CODE) {

            Uri uri = data.getData();

            openFile=uri.getPath();

            Log.i(TAG,"-------->"+uri.toString());

            Log.i(TAG, "------->" + uri.getPath());

            originalContent = FileOperation.read(openFile);

            originalText.setText(originalContent);

        }

        super.onActivityResult(requestCode, resultCode, data);

    }

读取文本代码：

 public static String read(String fileName){

        String path = fileName;

        String content = ""; 

        

        File file = new File(path);

        if (file.isDirectory())

        {

            Log.d("TestFile", "The File doesn't not exist.");

        }

        else

        {

            try {

                InputStream instream = new FileInputStream(file);

                if (instream != null)

                {

                    InputStreamReader inputreader = new InputStreamReader(instream);

                    BufferedReader buffreader = new BufferedReader(inputreader);

                    String line;

                    while (( line = buffreader.readLine()) != null) {

                        content += line + "\n";

                    }

                    instream.close();

                }

            }

            catch (FileNotFoundException e)

            {

                Log.d("TestFile", "The File doesn't not exist.");

            }

            catch (IOException e)

            {

                Log.d("TestFile", e.getMessage());

            }

        }

        return content;

    }

输出返回的URL.getPaht();url.toString() 发现路径皆不正常不知道哪里错了