使用InputStream从内部存储读取文件 [英] Using InputStream to read file from internal storage

问题描述

我搜索了几天，发现所有内容都是使用bufferedReader从内部存储中的文件读取的.不能使用InputStream读取内部存储中的文件吗?

I've searched for a couple days, and all I find is using bufferedReader to read from a file on internal storage. Is it not possible to use InputStream to read from a file on internal storage?

private void dailyInput()
{    
    InputStream in;
    in = this.getAsset().open("file.txt");
    Scanner input = new Scanner(new InputStreamReader(in));
    in.close();
}

我现在将其与input.next(一起使用)以在文件中搜索所需的数据.一切正常，但是我想将新文件保存到内部存储中并从中读取，而无需将所有内容都更改为bufferedReader.这可能吗?还是我需要硬着头皮改变一切?仅供参考，我不需要写，只需阅读.

I use this now with input.next() to search my file for the data that I need. It all works fine, but I would like to save new files to internal storage and read from them without changing everything to bufferedReader. Is this possible or do I need to bite the bullet and change everything? FYI I don't need to write, only read.

推荐答案

写入文件.

String FILENAME = "file.txt";
String string = "hello world!";

FileOutputStream fos = openFileOutput(FILENAME, Context.MODE_PRIVATE);
fos.write(string.getBytes());
fos.close();

阅读

void OpenFileDialog(String file) {

    //Read file in Internal Storage
    FileInputStream fis;
    String content = "";
    try {
        fis = openFileInput(file);
        byte[] input = new byte[fis.available()];
        while (fis.read(input) != -1) {
        }
        content += new String(input);
    }
    catch (FileNotFoundException e) {
        e.printStackTrace();
    }
    catch (IOException e) {
        e.printStackTrace();
    }
}

content将包含您的文件数据.

content will Contain your File Data.

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