Android Open Source - quote-of-the-day Main Activity

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From Project

Back to project page quote-of-the-day.

License

The source code is released under:

Apache License

Java Source Code

package com.seriousplay.qotd;
/*from   w w  w  .  jav  a2s  .c  om*/
import android.content.Intent;
import android.content.res.AssetManager;
import android.os.Bundle;
import android.support.v4.view.MenuItemCompat;
import android.support.v7.app.ActionBarActivity;
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 com.google.analytics.tracking.android.EasyTracker;

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

public class MainActivity extends ActionBarActivity {

  private TextView mTextView;
    private String STATE_QOTD;
  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.qotdview);
    /*if(savedInstanceState != null) {
      String savedText = savedInstanceState.getString(STATE_QOTD);
      mTextView.setText(savedText);
    }*/

    //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.qotdview);
        outState.putString(STATE_QOTD, mTextView.getText().toString());
        super.onSaveInstanceState(outState);
    }

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

        mTextView = (TextView) findViewById(R.id.qotdview);
        mTextView.setText(STATE_QOTD);
    }

    @Override
  protected void onStart() {
    super.onStart();
    EasyTracker.getInstance(this).activityStart(this);
  }
  
  @Override
  protected void onStop() {
    super.onStop();
    EasyTracker.getInstance(this).activityStop(this);
  }

  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.qotdview);
    TEXT_VALUE = quote;
    quoteDisplay.setText(TEXT_VALUE);
  }

  // onClick handler for the button click
  public void fetchQotD(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.main, menu);
    MenuItem shareItem = menu.findItem(R.id.menu_item_share);
    mShareActionProvider = (ShareActionProvider) MenuItemCompat.getActionProvider(shareItem);

    return super.onCreateOptionsMenu(menu);
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    //Handle item selection
    int id = item.getItemId();
    
    if(id == 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..."));
      }
    } else if (id == R.id.action_about) {
      //Toast.makeText(getApplicationContext(), "Please visit github.com/kulinp/QotD", Toast.LENGTH_LONG).show();
            Intent aboutIntent = new Intent(this, AboutActivity.class);
            startActivity(aboutIntent);
      //return true;
    } else if (id == R.id.action_settings) {
      Toast.makeText(getApplicationContext(), "Settings not yet implemented", Toast.LENGTH_LONG).show();
      return true;
    }
    return super.onOptionsItemSelected(item);
  }
}

Java Source Code List

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