package com.example.mohammed.flagquizgameapp;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Random;
import java.util.Set;
import java.lang.String;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.res.AssetManager;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;
public class MainActivity extends ActionBarActivity {
// String used when logging error messages
private static final String TAG = "FlagQuizGame Activity";
private List<String> fileNameList; // flag file names
private List<String> quizCountriesList; //name of countries in quiz
private Map<String, Boolean> regionsMap; // which regions are enabled
private String correctAnswer; // correct country for the current flag
private int totalGuesses; // number of guesses made
private int correctAnswers; // number of correct guesses
private int guessRows; // number of rows displaying choices
private Random random; //random number generator
private Handler handler; // used to delay loading next flag
private Animation shakeAnimation; // animation for incorrect guess
private TextView answerTextView; // displays Correct! or Incorrect!
private TextView questionNumberTextView; // shows current question #
private ImageView flagImageView; // displays a flag
private TableLayout buttonTableLayout; // table of answer Buttons
// called when the activity is first created
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); // call the superclass's method
setContentView(R.layout.activity_main); // inflate the GUI
fileNameList = new ArrayList<String>(); // list of flag names
quizCountriesList = new ArrayList<String>(); // flags in this quiz
regionsMap = new HashMap<String, Boolean>(); // HashMap of regions
guessRows = 1; // default to one row of choices
random = new Random(); // initialize the random number generator
handler = new Handler(); // used to perform delayed operations
// load the shake animation that's used for incorrect answers
shakeAnimation = AnimationUtils.loadAnimation(this, R.anim.incorrect_shake);
shakeAnimation.setRepeatCount(3); // animation repeats 3 times
// get array of world regions from strings.xml
String[] regionNames = getResources().getStringArray(R.array.regionsList);
// by default, countries are chosen from all regions
for (String region : regionNames)
regionsMap.put(region, true);
// get references to GUI components
questionNumberTextView = (TextView) findViewById(R.id.questionNumberTextView);
flagImageView = (ImageView) findViewById(R.id.flagImageView);
buttonTableLayout = (TableLayout) findViewById(R.id.buttonTableLayout);
answerTextView = (TextView) findViewById(R.id.answerTextView);
// set questionNumberTextView's text
questionNumberTextView.setText(getResources().getString(R.string.question) + "1"
+ getResources().getString(R.string.of) + "10");
resetQuiz(); // start a new quiz
} // end method onCreate
// set up and start the new quiz
private void resetQuiz()
{
// use the AssetManager to get the image flag
// file names for only the enabled regions
AssetManager assets = getAssets(); // gets the app's AssetManager
fileNameList.clear(); // empty the list
try{
Set<String> regions = regionsMap.keySet(); // get Set of regions
// loop through each region
for(String region: regions) //if region is enabled
{
if(regionsMap.get(region)) {
//get a list of all the flag image files in this region
String[] paths = assets.list(region);
for(String path: paths)
fileNameList.add(path.replace(".png", ""));
} // end if
} // end for
}// end try
catch(IOException e)
{
Log.e(TAG, "Error loading image file names", e);
} // end catch
correctAnswers = 0; // reset the number of correct answers made
totalGuesses = 0; // reset the total number of guesses the user made
quizCountriesList.clear(); // clear prior list of quiz countries
} // end method resetquiz
// after the user guesses a correct flag, load the next flag
private void loadNextFlag() throws IOException
{
// get the file name of the next flag and remove it from the list
String nextImageName = quizCountriesList.remove(0);
correctAnswer = nextImageName; // update the correct answer
answerTextView.setText(""); // clear answerTextView
// display the number of the current question in the quiz
questionNumberTextView.setText(
getResources().getString(R.string.question) + " " + (correctAnswers + 1) + " " +
getResources().getString(R.string.of) + " 10");
// extract the region from the next image's name
String region = nextImageName.substring(0, nextImageName.indexOf('-'));
// use AssetManager to load next image from the assets folder
AssetManager assets = getAssets(); // get app's AssetManager
InputStream stream; // used to read in flag images
try{
// get an InputStream to the asset representing the next flag
stream = assets.open(region + "/" + nextImageName + ".png");]
// load the asset as a Drawable and display on the flagImageView
Drawable flag = Drawable.createFromStream(stream, nextImageName);
flagImageView.setImageDrawable(flag);
} // end try
catch(IOException e)
{
Log.e(TAG, "Error loading " + nextImageName, e);
} // end catch
// clear prior answer Buttons from TableRows
for(int row = 0; row < buttonTableLayout.getChildCount(); ++row)
((TableRow) buttonTableLayout.getChildAt(row)).removeAllViews();
Collections.shuffle(fileNameList); // shuffle file names
// put the correct answer at the end of fileNameList
int correct = fileNameList.indexOf(correctAnswer);
fileNameList.add(fileNameList.remove(correct));
// get a reference to the LayoutInflater service
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// add 3, 6, or 9 answer Buttons based on the value of guessRows
for(int row = 0; row < guessRows; row++)
{
TableRow currentTableRow = getTableRow(row);
// place Buttons in currentTableRow
for(int column = 0; column < 3; column++)
{
// inflate guess_button.xml to create new button
Button newGuessButton = (Button) inflater.inflate(R.layout.guess_button, null);
// get country name and set it as newGuessButton's text
String fileName = fileNameList.get((row*3) + column);
newGuessButton.setText(getCountryName(fileName));
// register answerButtonListener to respond to button clicks
newGuessButton.setOnClickListener(guessButtonListener);
currentTableRow.addView(newGuessButton);
} // end for
} // end for
// randomly replace one Button with the correct answer
int row = random.nextInt(guessRows); // pick random row
int column = random.nextInt(3);// pick random column
TableRow randomTableRow = getTableRow(row); // get the TableRow
String countryName = getCountryName(correctAnswer);
((Button) randomTableRow.getChildAt(column)).setText(countryName);
} // end method loadNextFlag
// returns the specified TableRow
private TableRow getTableRow(int row)
{
return (TableRow) buttonTableLayout.getChildAt(row);
} // end method getTableRow
// parses the country flag file name and reurns the country name
private String getCountryName(String name) {
return name.substring(name.indexOf('-') + 1).replace('_', ' ');
} // end method getCountryName
// called when the user selects an answer
private void submitGuess(Button guessButton)
{
String guess = guessButton.getText().toString();
String answer = getCountryName(correctAnswer);
++totalGuesses; // increment the number of guesses the user has made
// if the guess is correct
if(guess.equals(answer))
{
++correctAnswers; // increment the number of correct answers
// display "Correct!" in green text
answerTextView.setText(answer + "!");
answerTextView.setTextColor(getResources().getColor(R.color.correct_answer));
disableButtons(); // disable all answer Buttons
// if the user has correctly identified 10 flags
if (correctAnswers == 10)
{
// create a new AlertDialog Builder
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle(R.string.reset_quiz); // title bar string
// set the AlertDialog's message to display game results
builder.setMessage(String.format("%d %s, %.02f%% %s", totalGuesses, getResources().getString(R.string.guesses),
(1000 / (double) totalGuesses), getResources().getString(R.string.correct)));
builder.setCancelable(false);
// add "Reset Quiz" Button
builder.setPositiveButton(R.string.reset_quiz, new DialogInterface.OnClickListener(){
public void onClick(DialogInterface dialog, int id)
{
resetQuiz();
} // end method onClick
} // end anonymous inner class
); // end call to setPositiveButton
//create AlertDialog for the Builder
AlertDialog resetDialog = builder.create();
resetDialog.show(); // display the Dialog
} // end if
else // answer is correct but quiz is not over
{
// load the next flag after a 1-second delay
handler.postDelayed(
new Runnable(){
@Override
public void run()
{
loadNextFlag();
}
}, 1000); // 1000 milliseconds for 1-second delay
} // end else
} // end if
else // guess was incorrect
{
// play the animation
flagImageView.startAnimation(shakeAnimation);
// display "Incorrect!" in red
answerTextView.setText(R.string.incorrect_answer);
answerTextView.setTextColor(getResources().getColor(R.color.incorrect_answer));
guessButton.setEnabled(false); // disable the incorrect answer
} // end else
} // end method submitGuess
// utility method that disables all answer Buttons
private void disableButtons()
{
for(int row = 0; row < buttonTableLayout.getChildCount(); ++row)
{
TableRow tableRow = (TableRow) buttonTableLayout.getChildAt(row);
for(int i = 0; i < tableRow.getChildCount(); ++i)
tableRow.getChildAt(i).setEnabled(false);
} // end outer for
} // end method disableButtons
// create constants for each menu id
private final int CHOICES_MENU_ID = Menu.FIRST;
private final int REGIONS_MENU_ID = Menu.FIRST + 1;
// called when the user accesses the options menu
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
super.onCreateOptionsMenu(menu);
// add two options to the menu - "Choices" and "Regions"
menu.add(Menu.NONE, CHOICES_MENU_ID, Menu.NONE, R.string.choices);
menu.add(Menu.NONE, REGIONS_MENU_ID, Menu.NONE, R.string.regions);
return true; // display the menu
} // end method onCreateOptionsMenu
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// switch the men id of the user-selected option
switch(item.getItemId())
{
case CHOICES_MENU_ID:
// create a list of the possible numbers of animal choices
final String[] possibleChoices = getResources().getString(R.array.guessesList);
//
}
return true;
}
}
The above code has a String[] inside a switch statement. The error that I get from this code is as follows:
Incompatible types Required: java.lang.String[] Found: java.lank.String
I'm pretty confused by this. I tried searching it online, but only got results that java.lang.string is found but int is required.
