我的应用程序有问题，我无法弄清楚如何解决它:( 我做了一个测验应用程序。单选按钮工作okey，打开问题工作okey，我有Checkboxes的问题。当我选择所有3个复选框（正确的答案是两个）时，它仍然标志着我是正确的答案......我做错了什么？谢谢！ ：（
package com.example.francesco.askzelda;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
Button submit;
int correctAnswers = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
//Make sure that user can only choose the two of the answers not all of them.
public void checkTwoBox(View view) {
CheckBox firstcheck = (CheckBox) findViewById(R.id.optionQ3_1);
CheckBox secondcheck = (CheckBox) findViewById(R.id.optionQ3_2);
CheckBox thirdcheck = (CheckBox) findViewById(R.id.optionQ3_3);
if (firstcheck.isChecked() && secondcheck.isChecked()) {
thirdcheck.setChecked(false);
}
if (thirdcheck.isChecked() && secondcheck.isChecked()) {
firstcheck.setChecked(false);
}
if (thirdcheck.isChecked() && firstcheck.isChecked()) {
secondcheck.setChecked(false);
}
}
//Show the result
public void submitResult(View view) {
//figure out if the user choose the right answer
RadioButton firstRightBox = (RadioButton) findViewById(R.id.option1_rb);
boolean hasClickedFirst1 = firstRightBox.isChecked();
RadioButton secondRightBox = (RadioButton) findViewById(R.id.optionQ2_2_rb);
boolean hasClickedSecond2 = secondRightBox.isChecked();
CheckBox thirdRightBox = (CheckBox) findViewById(R.id.optionQ3_1);
boolean hasClickedThird1 = thirdRightBox.isChecked();
CheckBox thirdSecondRightBox = (CheckBox) findViewById(R.id.optionQ3_3);
boolean hasClickedThird3 = thirdSecondRightBox.isChecked();
EditText answerText = (EditText) findViewById(R.id.question_4_editText);
String MasterSword = answerText.getText().toString();
//figure out if the user choose the wrong answer
RadioButton firstWrongBox = (RadioButton) findViewById(R.id.option2_rb);
boolean hasClickedFirst2 = firstWrongBox.isChecked();
RadioButton firstWrongBox2 = (RadioButton) findViewById(R.id.option3_rb);
boolean hasClickedFirst3 = firstWrongBox2.isChecked();
RadioButton secondWrongBox = (RadioButton) findViewById(R.id.optionQ2_1_rb);
boolean hasClickedSecond1 = secondWrongBox.isChecked();
RadioButton secondWrongBox2 = (RadioButton) findViewById(R.id.optionQ2_3_rb);
boolean hasClickedSecond3 = secondWrongBox2.isChecked();
CheckBox thirdWrongBox = (CheckBox) findViewById(R.id.optionQ3_2);
boolean hasClickedThird2 = thirdWrongBox.isChecked();
int correctAnswer = calculateCorrectAnswer(hasClickedFirst1, hasClickedSecond2, hasClickedThird1, hasClickedThird2, hasClickedThird3, MasterSword);
int wrongAnswer = calculateWrongAnswer(hasClickedFirst2, hasClickedFirst3, hasClickedSecond1, hasClickedSecond3, hasClickedThird2, hasClickedThird1, hasClickedThird3, MasterSword);
int emptyAnswer = calculateEmptyAnswer(hasClickedFirst1, hasClickedSecond2, hasClickedThird1, hasClickedThird2, hasClickedThird3, MasterSword, hasClickedFirst2, hasClickedFirst3, hasClickedSecond1, hasClickedSecond3);
String quizMessage = createOrderSummary(correctAnswer, wrongAnswer, emptyAnswer);
// Toast Message
String toast_1 = getString(R.string.toast_1);
String toast_2 = getString(R.string.toast_2);
String toast_3 = getString(R.string.toast_3);
Toast.makeText(MainActivity.this,toast_1 + " " + correctAnswer + " " + toast_2 + " \n" + toast_3, Toast.LENGTH_LONG).show();
displayMessage(quizMessage);
}
private String createOrderSummary(int correctAnswer, int wrongAnswer, int emptyAnswer) {
String msg1 = getString(R.string.thank1);
String msg2 = getString(R.string.thank2);
String msg3 = getString(R.string.total_correct);
String msg4 = getString(R.string.total_wrong);
String msg5 = getString(R.string.total_empty1);
String msg6 = getString(R.string.total_empty2);
String msg7 = getString(R.string.final_msg1);
String msg8 = getString(R.string.final_msg2);
String msg9 = getString(R.string.final_msg3);
String quizMessage = msg1 + " " + " " + msg2;
quizMessage += "\n" + msg3 + " " + correctAnswer;
quizMessage += "\n" + msg4 + " " + wrongAnswer;
quizMessage += "\n" + msg5 + " " + emptyAnswer + " " + msg6;
if (correctAnswer <= wrongAnswer) {
quizMessage += "\n" + msg7;
} else {
quizMessage += "\n" + msg8;
}
quizMessage += "\n" + msg9;
return quizMessage;
}
//Calculates correct
public int calculateCorrectAnswer(boolean first1, boolean second2, boolean third1, boolean third2, boolean third3, String LeoTolstoy) {
int correct = 0;
if (first1) {
correct = correct + 1;
}
if (second2) {
correct = correct + 1;
}
if (third1 & third3) {
correct = correct + 1;
}
if (LeoTolstoy.equals("Master Sword")) {
correct = correct + 1;
}
int correctAnswer = correct;
return correctAnswer;
}
//Calculates false
public int calculateWrongAnswer(boolean first2, boolean first3, boolean second1, boolean second3, boolean third2, boolean third1, boolean third3, String MasterSowrd) {
int wrong = 0;
if (first2) {
wrong = wrong + 1;
}
if (first3) {
wrong = wrong + 1;
}
if (second1) {
wrong = wrong + 1;
}
if (second3) {
wrong = wrong + 1;
}
if ((third1 & third2) || (third3 & third2) || (third3 & third2 & third1)) {
wrong = wrong + 1;
}
if (!MasterSowrd.equals("Master Sword") && !MasterSowrd.equals("")) {
wrong = wrong + 1;
}
int wrongAnswer = wrong;
return wrongAnswer;
}
//calculate empty questions
public int calculateEmptyAnswer(boolean first1, boolean second2, boolean third1, boolean third2, boolean third3, String MasterSowrd, boolean first2, boolean first3, boolean second1, boolean second3) {
int empty = 0;
if (!first1 && !first2 && !first3) {
empty = empty + 1;
}
if (!second1 && !second2 && !second3) {
empty = empty + 1;
}
if ((!third1 && !third3 && !third2) || (third1 && !third3 && !third2) || (third3 && !third1 && !third2) || (third2 && !third1 && !third3)) {
empty = empty + 1;
}
if (MasterSowrd.equals("")) {
empty = empty + 1;
}
int emptyAnswer = empty;
return emptyAnswer;
}
//This method displays the given text on the screen.
public void displayMessage(String message) {
TextView orderSummaryTextView = (TextView) findViewById(R.id.result_text_view);
orderSummaryTextView.setText(message);
}
}
答案 0 :(得分：0)
你可以这样做：
public void runThisEveryTimeTheUserClicksAnyCheckBox(CheckBox mostRecentlySelectedCheckBox) {
CheckBox firstcheck = (CheckBox) findViewById(R.id.optionQ3_1);
CheckBox secondcheck = (CheckBox) findViewById(R.id.optionQ3_2);
CheckBox thirdcheck = (CheckBox) findViewById(R.id.optionQ3_3);
CheckBox[] allCheckBoxes = new CheckBox[]{firstcheck, secondcheck, thirdcheck};
int totalChecked = 0;
for (CheckBox checkBox : allCheckBoxes) {
if ( checkBox.isSelected() ) {
totalChecked++;
}
}
if (totalChecked == 3) {
mostRecentlySelectedCheckBox.setSelected(false);
}
}
然后您将不再需要checkTwoBox方法。