我在Android Studio中创建了一个Hangman游戏。在绘制字母以形成单词等以及剩余的尝试次数时，它应该正常工作。
我坚持确定玩家何时赢得了提示AlertDialog框并开始新游戏的逻辑。如果我可以做到这一点，可以了解一些亮点吗？
import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.support.v4.app.NavUtils;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.AlertDialogLayout;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.GridLayout;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ViewSwitcher;
import java.util.Random;
public class GameActivity extends AppCompatActivity {
//To reference the components
ImageSwitcher imageSwitcher;
TextView textView;
TextView textViewScore;
Button btn [] = new Button[26];
AlertDialog helpAlert;
//Images for the hangman
int img [] = {R.drawable.img0,
R.drawable.img1,
R.drawable.img2,
R.drawable.img3,
R.drawable.img4,
R.drawable.img5,
R.drawable.img6,
R.drawable.img7,
R.drawable.img8};
//Variables
String strSecret = "", strGuess="", strText="";
String strWords[] = {"APPLE", "ORANGE","BANANA"};
int intError = 0; //Error made by player
int livesRemaining = 8; //Lives remaining by player
Random random = new Random(); //Random generator
//To create help icon at top right
@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);
return true;
}
//To create help icon at top right
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
//case android.R.id.home:
// NavUtils.navigateUpFromSameTask(this);
//return true;
case R.id.action_help:
showHelp();
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_game);
//Retrieve the reference
imageSwitcher = findViewById(R.id.imageSwitcher);
textView = findViewById(R.id.textView);
textViewScore = findViewById(R.id.textViewScore);
textViewScore.setText(String.valueOf(livesRemaining));
setupImageSwitcher();
setup26Buttons();
getSecretWord();
}
private void setup26Buttons() {
GridLayout g = findViewById(R.id.gridLayout);
//to create 26 buttons
for(int i = 0; i<btn.length; i++) {
btn[i] =new Button(this, null, R.attr.buttonStyleSmall); //Buttonsytlesmall so that it fits the screen
btn[i].setText(""+(char)('A'+i)); //need to set back to char, as +i will set it back to integer. "" to set this to a String so it is sync to setText
btn[i].setTag(""+(char)('A'+i));
btn[i].setOnClickListener(new View.OnClickListener() {
@SuppressLint("ResourceAsColor")
@Override
public void onClick(View v) {
strGuess += v.getTag(); //Get letter that the player guessed and keep adding on to strGuess
v.setEnabled(false); //disable pressed button since the player already press
v.setBackgroundColor(android.R.color.black);
//Check for error guess. If the letter is not inside the strSecret, it will return less than 0
if (strSecret.indexOf(v.getTag().toString())<0){
intError++; //your error is added
int livesRemaining = 8;
livesRemaining -= intError; // Countdown based on errors recorded
textViewScore.setText(String.valueOf(livesRemaining));
imageSwitcher.setImageResource(img[intError]); //set the img no. to follow the error
}
//Display all correct guesses
strText = ""; //reset the display
for (int i = 0 ; i<strSecret.length();i++){
char ch = strSecret.charAt(i); // get each character from strSecret
//To check if this letter can be found in strGuess
if(strGuess.indexOf(ch)>=0){
//found
strText += ch;
}
else{
//Not found
strText += "-";
}
}
textView.setText(strText);
}
});
g.addView(btn[i]);
}
}
private void getSecretWord() {
int index = random.nextInt(strWords.length);
strSecret = strWords[index];
for(int i=0; i<strSecret.length(); i++) {
strText += "-"; //to create multiple - for the unknown word
}
textView.setText(strText);
}
private void setupImageSwitcher() {
//https://www.tutorialspoint.com/android/android_imageswitcher.htm
imageSwitcher.setFactory(new ViewSwitcher.ViewFactory() {
@Override
public View makeView() {
ImageView imageView = new ImageView(getApplicationContext());
imageView.setImageResource(R.drawable.img0);
return imageView;
}
});
Animation aniOut = AnimationUtils.loadAnimation(this, android.R.anim.slide_out_right);
Animation aniIn = AnimationUtils.loadAnimation(this, android.R.anim.slide_in_left);
imageSwitcher.setOutAnimation(aniOut);
imageSwitcher.setOutAnimation(aniIn);
}
//show help information
public void showHelp(){
AlertDialog.Builder helpBuild = new AlertDialog.Builder(this);
helpBuild.setTitle("Help");
helpBuild.setMessage("Whisper the password (Hangman's favourite fruit) to save Batman\n\n"
+ "You only have 8 tries!");
helpBuild.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
helpAlert.dismiss();
}});
helpAlert = helpBuild.create();
helpBuild.show();
}
}
答案 0 :(得分：2)
您可以在onClickListener onClick方法中添加布尔标记。示例代码：
// Display all correct guesses
String strText = ""; // reset the display
boolean allFound = true;
for (int i = 0; i < strSecret.length(); i++)
{
char ch = strSecret.charAt(i); // get each character from strSecret
// To check if this letter can be found in strGuess
if (strGuess.indexOf(ch) >= 0)
{
// found
strText += ch;
}
else
{
// Not found
strText += "-";
allFound = false;
}
}
if(allFound)
{
// Word was guessed correctly
[...]
}
allFound是一个布尔标志，默认为true。如果找不到一个猜到的字符，则将其设置为false。循环完整的单词后，检查它是否仍然是真的，这意味着没有找到任何字符，这反过来意味着每个字符都被找到。
在这种情况下，您可以确定您的单词被正确猜测并且可以采取相应的行动。