Android How can I read json file(text file) from SD Card and display data into textview [duplicate]

Answer 1

Following may be useful, which I have taken from android developer site.

In order to read or write files on the external storage, your app must acquire the READ_EXTERNAL_STORAGE or WRITE_EXTERNAL_STORAGE system permissions.

You can set the permissions in your manifest file like this:

    
    
    ...

Here are a couple methods you can use to check the availability:

/* Checks if external storage is available for read and write */
public boolean isExternalStorageWritable() {
    String state = Environment.getExternalStorageState();
    if (Environment.MEDIA_MOUNTED.equals(state)) {
        return true;
    }
    return false;
}

/* Checks if external storage is available to at least read */
public boolean isExternalStorageReadable() {
    String state = Environment.getExternalStorageState();
    if (Environment.MEDIA_MOUNTED.equals(state) ||
        Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
        return true;
    }
    return false;
}

Read the file content as given below. After that you can process,

final File file = new File(Environment.getExternalStorageDirectory()
                          .getAbsolutePath(), filename);