有没有办法从手机的SD卡输入文本文件？

Question

I'm making a Phonegap app that requires a text file input from the user. I've tried using <input type="file"> but it only allows me to choose a file from the gallery or a music file.

Is there any way for the user to browse the phone's sdcard using the native file browsers for a text file on both iOS and Android? Or is making my own file browser the only option available? Is there no simple way to let the user plug in a file to the app?

Answer 1

To put it simply: No

iOS don't have an accessible file system not even for developers. Also none of the iOS devices support SD cards.

Answer 2

In android you can more do it.

To make your app compatible with standard text files by registering it into it's manifest file. Take a look at this example from google.

To access the files in the SD card, if for instance you want to scan for a certain file type, take a look at this guide .

Answer 3

//Find the directory for the SD Card using the API // Don't hardcode "/sdcard"

File sdcard = Environment.getExternalStorageDirectory();

//Get the text file

File file = new File(sdcard,"file.txt");

//Read text from file

StringBuilder text = new StringBuilder();

try {
    BufferedReader br = new BufferedReader(new FileReader(file));
    String line;

    while ((line = br.readLine()) != null) {
        text.append(line);
        text.append('\n');
    }
}
catch (IOException e) {
    //You'll need to add proper error handling here
}

//Find the view by its id

TextView tv = (TextView)findViewById(R.id.text_view);

//Set the text

tv.setText(text);