如何使我的应用正确读取外部文本文件？ 只显示奇怪的字符和钻石

Question

I'm working on my first app. Got everything set up and working correctly, except displaying a random quote from a text file. Clicking the button shows weird characters (diamonds, question marks, etc) and not the actual text except for the placeholder off and on.

I followed the github source correctly as far as I know.

package drewstephensdesigns.com.dailyquotes;

import android.content.Intent;
import android.content.res.AssetManager;
import android.os.Bundle;
import android.support.v4.view.MenuItemCompat;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.ShareActionProvider;
import android.text.method.ScrollingMovementMethod;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Random;

public class MainActivity extends AppCompatActivity {

    private TextView mTextView;

    private String STATE_DQ;
    private static String TEXT_VALUE = "";
    private ShareActionProvider mShareActionProvider;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mTextView = (TextView) findViewById(R.id.dq_view);
        //Adds scrolling to the TextView
        mTextView.setMovementMethod(ScrollingMovementMethod.getInstance());
    }

    //Code to save state on orientation change
    @Override
    public void onSaveInstanceState(Bundle outState) {
        mTextView = (TextView) findViewById(R.id.dq_view);
        outState.putString(STATE_DQ, mTextView.getText().toString());
        super.onSaveInstanceState(outState);
    }

    @Override
    public void onRestoreInstanceState(Bundle savedInstanceState) {
        super.onRestoreInstanceState(savedInstanceState);

        mTextView = (TextView) findViewById(R.id.dq_view);
        mTextView.setText(STATE_DQ);
    }

    private AssetManager getApplicationAssets() {
        // open random quotes file
        AssetManager assetmanager = getAssets();
        return assetmanager;
    }

    private String getAssetPath(AssetManager assetmanager) {
        String[] dirs = null;
        String[] files = null;
        String path = null;

        try {
            dirs = assetmanager.list("");   //get list of files / dirs from the project 'assets' directory
            files = assetmanager.list(dirs[2]); //Directories are listed in alphabetical order so fetch the 'txt' directory
            path = dirs[2].toString() + "/" + files[0].toString();  //construct the path (there is only 1 file in the dir)
        } catch (IOException e) {
            e.printStackTrace();
        }
        return path;
    }

    // Get the path for the random quote file
    private InputStreamReader getQuoteReader() throws IOException {
        // open random quotes file
        AssetManager assets = getApplicationAssets();
        String path = null;
        path = getAssetPath(assets);
        InputStream inputStream = null;

        try {
            inputStream = assets.open(path);
            Log.v("QotD path", path);
        } catch (IOException e) {
            e.printStackTrace();
        }
        InputStreamReader textReader = new InputStreamReader(inputStream);
        return textReader;
    }

    // Get the total number of lines in the file
    private int getFileLineCount(InputStreamReader textReader) {
        BufferedReader br = new BufferedReader(textReader);
        int lineCount = 0;
        try {
            while ((br.readLine()) != null) {
                lineCount++;
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

        return lineCount; // total number of lines in the text file
    }

    // Return a random line number from where to get the
    // corresponding quote string
    private int getRandomLineNumber(int totalLines) {
        Random rand = new Random();
        return rand.nextInt(totalLines);
    }

    private String getRandomQuote(int lineToFetch)
            throws IOException {
        //1. get path
        AssetManager assets = getApplicationAssets();
        String path = null;
        path = getAssetPath(assets);

        //2. open assets
        InputStream stream = assets.open(path);
        InputStreamReader randomQuote = new InputStreamReader(stream);

        //3. Get BufferedReader object
        BufferedReader buf = new BufferedReader(randomQuote);

        String quote = null;
        String line = null;
        int currLine = 0;

        //4. Loop through using the new InputStreamReader until a match is found
        while ((line = buf.readLine()) != null && currLine < lineToFetch) {
            currLine++;
        }

        //Got the quote
        quote = line;

        //Clean up
        randomQuote.close();
        buf.close();

        return quote;
    }

    // Set the EditText widget to display the new random quote
    private void displayQuote(String quote) {
        TextView quoteDisplay = (TextView) findViewById(R.id.dq_view);
        TEXT_VALUE = quote;
        quoteDisplay.setText(TEXT_VALUE);
    }

    // onClick handler for the button click
    public void fetch_quote(View view) throws IOException {
        // open random quotes file
        InputStreamReader textReader = getQuoteReader();

        final int totalLines = getFileLineCount(textReader);
        int lineToFetch = 0;
        String quote = null;

        // We want to get the quote at the following line number
        lineToFetch = getRandomLineNumber(totalLines);

        quote = getRandomQuote(lineToFetch);

        displayQuote(quote);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        MenuItem shareItem = menu.findItem(R.id.menu_item_share);
        mShareActionProvider = (ShareActionProvider) MenuItemCompat.getActionProvider(shareItem);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        switch(item.getItemId()){
            case R.id.menu_item_share:
                if(TEXT_VALUE == "") {
                    Toast.makeText(this, "Nothing to share! First generate a quote by clicking the button", Toast.LENGTH_SHORT).show();
                } else {
                    Intent shareIntent = new Intent(Intent.ACTION_SEND);
                    shareIntent.setType("text/plain");
                    shareIntent.putExtra(Intent.EXTRA_TEXT, TEXT_VALUE);
                    shareIntent.putExtra(Intent.EXTRA_SUBJECT, "Thought you might like this interesting Quote");
                    startActivity(Intent.createChooser(shareIntent, "Share the quote via..."));
                }
                break;

            case R.id.action_settings:
                Toast.makeText(getApplicationContext(), "Settings not yet implemented", Toast.LENGTH_LONG).show();
                break;
            case R.id.action_about:
                Intent aboutIntent = new Intent(this, AboutActivity.class);
                startActivity(aboutIntent);
                break;
            default:
                break;
        }

        return super.onOptionsItemSelected(item);
    }
}

This is what I see :

Answer 1

I had a folder called "fonts" that was not being used. My code was looking for the assets folder with just the randomquote.txt file. Due to the extra folder in there, it was unable to locate the txt file. Deleted the folder since it wasn't being used, saved, boom and progress.