我想从drawable文件夹中传递值。我知道如何从drawable传递值，但知道修改下面的代码的知识较少。在此代码中，所有玩家的价值都来自＆＃34;资产＆＃34; 。我想从drawable传递drawable文件夹有两个值，一个是＆＃34;播放器及＃34;文件夹和另一个是背景图像，一些图标。我不确定drawable中的子文件夹是否有效。如果没有，那么我将如何排除背景图像，图标。我可以使用像player [] = {R.drawable.A，R.drawable.B ....}这样的数组传递drawable值。仍然无法修改此代码。我感到很无奈:(
public class QuizGame extends Activity {
//String used when logging error messages
private static final String TAG = "QuizGame Activity";
//Instance Variables
private List<String> fileNameList; // player file names
private List<String> quizPlayersList; // names of players in quiz
private String correctAnswer; // current correct answer
private int totalGuesses; // number of guesses
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 of next player
private Animation shakeAnimation; // animation for incorrect answers
private TextView answerTextView;
private TextView questionNumberTextView;
private ImageView faceImageView;
private TableLayout buttonTableLayout;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
fileNameList = new ArrayList<String>(); // list of image file names
quizPlayersList = new ArrayList<String>(); // players in quiz
guessRows = 3; // defaulted to one row of choices
random = new Random(); // initialize the random number generator
handler = new Handler(); // used to perform delayed operations
// get references to the GUI components
questionNumberTextView = (TextView) findViewById(R.id.questionNumberTextView);
answerTextView = (TextView) findViewById(R.id.answerTextView);
faceImageView = (ImageView) findViewById(R.id.faceImageView);
buttonTableLayout = (TableLayout) findViewById(R.id.buttonTableLayout);
// set questionNumbers Text
questionNumberTextView.setText(
getResources().getString(R.string.question) + " 1 " +
getResources().getString(R.string.of) + " 10");
// load the shake animations used to animate incorrect answers
shakeAnimation = AnimationUtils.loadAnimation(this, R.anim.incorrect_shake);
shakeAnimation.setRepeatCount(3); // animation repeats 3 times
// start a new quiz
resetQuiz();
} //end onCreate method
// set up and start the next quiz
private void resetQuiz(){
// use the AssetManager to get the player image
// file names for the app
AssetManager assets = getAssets();
fileNameList.clear(); // clear the list
// get list of all player names in this region
String[] paths = null;
try {
paths = assets.list("Players");
} catch (IOException e) {
// TODO Auto-generated catch block
Log.e(TAG, "Error loading ", e);
}
for(String path : paths)
fileNameList.add(path.replace(".jpg", ""));
correctAnswers = 0; // reset number of correct answers
totalGuesses= 0; // reset number of guesses
quizPlayersList.clear(); // clear prior list of quiz countries
// add 10 random file names to the quiz list
int playerCounter = 1;
int numberOfPlayers = fileNameList.size();
while(playerCounter <= 10){
int randomIndex = random.nextInt(numberOfPlayers);
//get random file name
String fileName = fileNameList.get(randomIndex);
//if region is enabled and hasnt been chosen
if(!quizPlayersList.contains(fileName)){
quizPlayersList.add(fileName);
++playerCounter;
}
}
loadNextPlayer(); //start quiz by loading next player
}
// after user guesses a correct player, load the next one
private void loadNextPlayer(){
//get the filename of the next flag and remove it from the list
String nextImageName = quizPlayersList.remove(0);
correctAnswer = nextImageName; //update correct answer
answerTextView.setText(""); //clear the 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 images name
String region = "Players";
//use AssetManager to load next image from assets folder
AssetManager assets = getAssets(); // get apps Asset Manager
InputStream stream; // used to read in player names
try{
//get an InputStream to the asset representing the next flag
stream = assets.open(region + "/" + nextImageName + ".jpg");
//load the asset as Drawable and display on the flagImageView
Drawable flag = Drawable.createFromStream(stream, nextImageName);
faceImageView.setImageDrawable(flag);
}
catch (IOException e){
Log.e(TAG, "Error loading " + nextImageName, e);
}
//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 the fileNameList
int correct = fileNameList.indexOf(correctAnswer);
fileNameList.add(fileNameList.remove(correct));
//get a reference to the LayoutInflator 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 player name and set it as newGuessButtons text
String fileName = fileNameList.get((row * 3) + column);
newGuessButton.setText(getPlayerName(fileName));
//register answerButton listener to respond to clicks
newGuessButton.setOnClickListener(guessButtonListener);
currentTableRow.addView(newGuessButton);
}
}
//randomly replace one Button with the correct answer
int row = random.nextInt(guessRows);
int column = random.nextInt(3);
TableRow randomTableRow = getTableRow(row);
String playerName = getPlayerName(correctAnswer);
((Button) randomTableRow.getChildAt(column)).setText(playerName);
} // end loadNextPlayer method
// return the specified TableRow
private TableRow getTableRow(int row){
return (TableRow) buttonTableLayout.getChildAt(row);
}
// parses the player file name and returns the player name
private String getPlayerName(String name){
return name.substring(name.indexOf('-') + 1).replace('-', ' ');
}
// method submitGuess called when user selects an answer
private void submitGuess (Button guessButton){
String guess = guessButton.getText().toString();
String answer = getPlayerName(correctAnswer);
++totalGuesses; //increment the number of guesses made
if (guess.equals(answer)){
++correctAnswers; // increment number of correct answers
//display Correct answer in answerTextView
answerTextView.setText(answer + "!" );
answerTextView.setTextColor(getResources().getColor(R.color.correct_answer));
disableButtons(); //disable all answer Buttons
// if user has guessed 10 correct players
if (correctAnswers == 10){
//create new AlertDialog Builder
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle(R.string.reset_quiz);
//set the AlertDialogs message to display the 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() {
@Override
public void onClick(DialogInterface dialog, int which) {
resetQuiz();
} // end onClick
} // end anonymous inner class
); //end call to setPositiveButton
// create AlertDialog from the Builder
AlertDialog resetDialog = builder.create();
resetDialog.show();
} // end if
else // answer is correct but game isnt over
{
//load the next flag after a one second delay
handler.postDelayed(
new Runnable()
{
@Override
public void run(){
loadNextPlayer();
}
}, 1000); // 1000 milliseconds for 1 second delay
} // end else
} // end if
else // answer was incorrect
{
//play the animation
faceImageView.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 submitGuess method
// method to disable 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);
}
}
}
// create constants for each menu id
private final int CHOICES_MENU_ID = Menu.FIRST;
// called when the user accesses the options menu
@Override
public boolean onCreateOptionsMenu(Menu menu){
super.onCreateOptionsMenu(menu);
// add options to the menu
menu.add(Menu.NONE, CHOICES_MENU_ID, Menu.NONE, R.string.choices);
return true; // display the menu
}
// called when the user selects an option from the menu
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// switch the menu id of the user selected option
switch (item.getItemId())
{
case CHOICES_MENU_ID:
//create a list of the possible number of answer choices
final String[] possibleChoices = getResources().getStringArray(R.array.guessesList);
//create an AlertDialog Builder and set its title
AlertDialog.Builder choicesBuilder = new AlertDialog.Builder(this);
choicesBuilder.setTitle(R.string.choices);
//add possibleChoices items to the Dialog and set the
// behavior when one of the items is clicked
choicesBuilder.setItems(R.array.guessesList,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int item) {
// update guessRows to reflect user choice
guessRows = Integer.parseInt(possibleChoices[item].toString()) / 3;
resetQuiz();
}
});
// create AlertDialog from the Builder
AlertDialog choicesDialog = choicesBuilder.create();
choicesDialog.show();
break;
} // end switch
return super.onOptionsItemSelected(item);
}// end method onOptionsItemSelected