java - 如果多次检查正确的单选按钮，则停止分数增加
问题描述
我有 2 个 radioGroup 问题，当检查正确答案时，结果按预期增加了 20，但是当按几次正确的单选按钮时，它不断增加分数（结果）的问题，我希望分数（结果）是即使按了正确的单选按钮几次，也只会增加一次！另外，如何重置所有问题的所有答案以重新开始测验？提前谢谢
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:context="com.example.nour.quiz.MainActivity">
<ImageView
android:id="@+id/android_pyramids_image_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:orientation="vertical"
android:padding="16dp">
<TextView
android:id="@+id/Q1"
style="@style/QuestionsTextStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:text="@string/Q1" />
<EditText
android:id="@+id/age"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="@string/hint1"
android:inputType="number"
style="@style/AnswersTextStyle"/>
<TextView
android:id="@+id/Q2"
style="@style/QuestionsTextStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:text="@string/Q2" />
<EditText
android:id="@+id/pharoahName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="@string/hint2"
android:inputType="textCapWords"
style="@style/AnswersTextStyle"/>
<TextView
android:id="@+id/Q3"
style="@style/QuestionsTextStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:text="@string/Q3" />
<RadioGroup
android:id="@+id/radioGroupOne"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<RadioButton
android:id="@+id/yesAnswer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="result"
android:text="@string/RadioButton1"
style="@style/AnswersTextStyle"/>
<RadioButton
android:id="@+id/noAnswer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="result"
android:text="@string/RadioButton2"
style="@style/AnswersTextStyle"/>
</RadioGroup>
<TextView
android:id="@+id/Q4"
style="@style/QuestionsTextStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:text="@string/Q4" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<CheckBox
android:id="@+id/wonderOne"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:onClick="wonderOne"
android:text="@string/CheckBox1"
style="@style/AnswersTextStyle"/>
<CheckBox
android:id="@+id/wonderTwo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:onClick="wonderTwo"
android:text="@string/CheckBox2"
style="@style/AnswersTextStyle"/>
<CheckBox
android:id="@+id/wonderThree"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:onClick="wonderThree"
android:text="@string/CheckBox3"
style="@style/AnswersTextStyle"/>
</LinearLayout>
<TextView
android:id="@+id/Q5"
style="@style/QuestionsTextStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:text="@string/Q5" />
<RadioGroup
android:id="@+id/radioGroupTwo"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<RadioButton
android:id="@+id/FranceAnswer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="FranceButton"
android:text="@string/RadioButton3"
style="@style/AnswersTextStyle"/>
<RadioButton
android:id="@+id/EnglandAnswer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="EnglandButton"
android:text="@string/RadioButton4"
style="@style/AnswersTextStyle"/>
<RadioButton
android:id="@+id/EgyptAnswer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="EgyptButton"
android:text="@string/RadioButton5"
style="@style/AnswersTextStyle"/>
</RadioGroup>
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="@drawable/button"
android:onClick="result"
android:text="@string/button" />
</RelativeLayout>
</LinearLayout>
</RelativeLayout>
private int result = 0;
EditText age, name;
CheckBox wonderOne, wonderTwo, wonderThree;
RadioGroup radioGroup1, radioGroup2;
RadioButton yes, no, france, england, egypt;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
age = findViewById(R.id.age);
name = findViewById(R.id.pharoahName);
radioGroup1 = findViewById(R.id.radioGroupOne);
radioGroup2 = findViewById(R.id.radioGroupTwo);
wonderOne = findViewById(R.id.wonderOne);
wonderTwo = findViewById(R.id.wonderTwo);
wonderThree = findViewById(R.id.wonderThree);
}
//Result of Q4
// Do nothing if wonder one is checked
public void wonderOne(View view) {
if (wonderTwo.isChecked() && wonderThree.isChecked() && !wonderOne.isChecked()) {
result += 20;
} else {
}
}
//Result of Q4
//Add 20 to result if wonder two is checked
public void wonderTwo(View view) {
if (wonderTwo.isChecked() && wonderThree.isChecked() && !wonderOne.isChecked()) {
result += 20;
} else {
}
}
//Add 20 to result if wonder three is checked
public void wonderThree(View view) {
if (wonderTwo.isChecked() && wonderThree.isChecked() && !wonderOne.isChecked()) {
result += 20;
} else {
}
}
//Result of Q5
public void FranceButton(View view) {
int radioId = radioGroup2.getCheckedRadioButtonId();
france = findViewById(radioId);
}
//Result of Q5
public void EnglandButton(View view) {
int radioId = radioGroup2.getCheckedRadioButtonId();
england = findViewById(radioId);
}
//Result of Q5
public void EgyptButton(View view) {
int radioId = radioGroup2.getCheckedRadioButtonId();
egypt = findViewById(radioId);
//Add 20 to result if Egypt is checked
if (egypt.isChecked()) {
result += 20;
} else {
}
}
//Result of Q3
//This method is called when submit answers button is clicked
public void result(View view) {
//Result of Q1
// This method is to prevent app from crashing if age is not entered
try {
//Range of accepted age is between 21 & 50 years old
int range = Integer.parseInt(age.getText().toString());
//Add 20 to result if age is between 21 & 50
if (range >= 21 && range <= 50) {
result += 20;
} else {
}
} catch (Exception ex) {
System.out.println("you must enter your age");
}
//Result of Q2
// Add 20 to result if Name = Cleopatra
if (name.getText().toString().equals("Cleopatra")) {
result += 20;
} else {
}
//Result of Q3
yes = findViewById(R.id.yesAnswer);
no = findViewById(R.id.noAnswer);
if (yes.isChecked() && !no.isChecked()){
result += 20;
}
//Calculate final result
if (result >= 60) {
ImageView imageView = findViewById(R.id.android_pyramids_image_view);
imageView.setImageResource(R.drawable.pyramids_hdpi);
Toast.makeText(getApplicationContext(), "Your result is: " + result + "/100" +
", Congratulations! YOU won a trip to Egypt.", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(getApplicationContext(), "Your result is: " + result + "/100" +
", Hard luck this time!", Toast.LENGTH_LONG).show();
}
}
}
解决方案
（最终正确答案）
公共类 MainActivity 扩展 AppCompatActivity {
private int result = 0;
EditText age, name;
CheckBox wonderOne, wonderTwo, wonderThree;
RadioGroup radioGroup1, radioGroup2;
RadioButton yes, no, france, england, egypt;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
age = findViewById(R.id.age);
name = findViewById(R.id.pharoahName);
radioGroup1 = findViewById(R.id.radioGroupOne);
radioGroup2 = findViewById(R.id.radioGroupTwo);
wonderOne = findViewById(R.id.wonderOne);
wonderTwo = findViewById(R.id.wonderTwo);
wonderThree = findViewById(R.id.wonderThree);
}
//Result of Q3
public void yesButton(View view) {
int radioId = radioGroup1.getCheckedRadioButtonId();
yes = findViewById(radioId);
//Add 20 to result if yes is checked
if (yes.isChecked()) {
result += 20;
//disabling the radioButtons after the user has selected an option in it
//This is to prevent rechecking of checked radioButton and stop score (result) increment
for (int i = 0; i < radioGroup1.getChildCount(); i++) {
radioGroup1.getChildAt(i).setEnabled(false);
}
}else{
}
}
//Result of Q3
public void noButton(View view) {
int radioId2 = radioGroup1.getCheckedRadioButtonId();
no = findViewById(radioId2);
if (no.isChecked()){
//disabling the radioButtons after the user has selected an option in it
//This is to prevent rechecking of checked radioButton and stop score (result) increment
for (int i = 0; i < radioGroup1.getChildCount(); i++) {
radioGroup1.getChildAt(i).setEnabled(false);
}
}else {
}
}
//Result of Q4
// Do nothing if wonder one is checked
public void wonderOne(View view) {
if (wonderTwo.isChecked() && wonderThree.isChecked() && !wonderOne.isChecked()) {
result += 20;
} else {
}
}
//Result of Q4
//Add 20 to result if wonder two is checked
public void wonderTwo(View view) {
if (wonderTwo.isChecked() && wonderThree.isChecked() && !wonderOne.isChecked()) {
result += 20;
} else {
}
}
//Result of Q4
//Add 20 to result if wonder three is checked
public void wonderThree(View view) {
if (wonderTwo.isChecked() && wonderThree.isChecked() && !wonderOne.isChecked()) {
result += 20;
} else {
}
}
//Result of Q5
public void FranceButton(View view) {
int radioId = radioGroup2.getCheckedRadioButtonId();
france = findViewById(radioId);
if (france.isChecked()){
//disabling the radioButtons after the user has selected an option in it
//This is to prevent rechecking of checked radioButton and stop score (result) increment
for (int x = 0; x < radioGroup2.getChildCount(); x++) {
radioGroup2.getChildAt(x).setEnabled(false);
}
}else {
}
}
//Result of Q5
public void EnglandButton(View view) {
int radioId = radioGroup2.getCheckedRadioButtonId();
england = findViewById(radioId);
if (england.isChecked()){
//disabling the radioButtons after the user has selected an option in it
//This is to prevent rechecking of checked radioButton and stop score (result) increment
for (int x = 0; x < radioGroup2.getChildCount(); x++) {
radioGroup2.getChildAt(x).setEnabled(false);
}
}else {
}
}
//Result of Q5
public void EgyptButton(View view) {
int radioId = radioGroup2.getCheckedRadioButtonId();
egypt = findViewById(radioId);
//Add 20 to result if Egypt is checked
if (egypt.isChecked()) {
result += 20;
//disabling the radioButtons after the user has selected an option in it
//This is to prevent rechecking of checked radioButton and stop score (result) increment
for (int x = 0; x < radioGroup2.getChildCount(); x++) {
radioGroup2.getChildAt(x).setEnabled(false);
}
} else {
}
}
//Result of Q3
//This method is called when submit answers button is clicked
public void result(View view) {
//Result of Q1
// This method is to prevent app from crashing if age is not entered
try {
//Range of accepted age is between 21 & 50 years old
int range = Integer.parseInt(age.getText().toString());
//Add 20 to result if age is between 21 & 50
if (range >= 21 && range <= 50) {
result += 20;
} else {
}
} catch (Exception ex) {
System.out.println("you must enter your age");
}
//Result of Q2
// Add 20 to result if Name = Cleopatra
if (name.getText().toString().equals("Cleopatra")) {
result += 20;
} else {
}
//Calculate final result
if (result >= 60) {
//Display pyramid image
ImageView imageView = findViewById(R.id.android_pyramids_image_view);
imageView.setImageResource(R.drawable.pyramids_hdpi);
imageView.setVisibility(View.VISIBLE);
//Display Toast message
Toast.makeText(getApplicationContext(), "Your result is: " + result + "/100" +
", Congratulations! YOU won a trip to Egypt.", Toast.LENGTH_LONG).show();
//Clear all answers and reset result to zero to restart quiz
name.getText().clear();
age.getText().clear();
wonderOne.setChecked(false);
wonderTwo.setChecked(false);
wonderThree.setChecked(false);
radioGroup1.clearCheck();
//Enabling the radioButtons again for each radioGroup
for (int i = 0; i < radioGroup1.getChildCount(); i++) {
radioGroup1.getChildAt(i).setEnabled(true);
}
radioGroup2.clearCheck();
//Enabling the radioButtons again for each radioGroup
for (int x = 0; x < radioGroup2.getChildCount(); x++) {
radioGroup2.getChildAt(x).setEnabled(true);
}
result = 0;
} else {
//Remove pyramid image
ImageView imageView = findViewById(R.id.android_pyramids_image_view);
imageView.setImageResource(R.drawable.pyramids_hdpi);
//This code to make pyramid image visible again after removal by wrong answers
imageView.setVisibility(View.INVISIBLE);
//Display Toast message
Toast.makeText(getApplicationContext(), "Your result is: " + result + "/100" +
", Hard luck this time!", Toast.LENGTH_LONG).show();
//Clear all answers and reset result to zero to restart quiz
name.getText().clear();
age.getText().clear();
wonderOne.setChecked(false);
wonderTwo.setChecked(false);
wonderThree.setChecked(false);
radioGroup1.clearCheck();
//Enabling the radioButtons again for each radioGroup
for (int i = 0; i < radioGroup1.getChildCount(); i++) {
radioGroup1.getChildAt(i).setEnabled(true);
}
radioGroup2.clearCheck();
//Enabling the radioButtons again for each radioGroup
for (int x = 0; x < radioGroup2.getChildCount(); x++) {
radioGroup2.getChildAt(x).setEnabled(true);
}
result = 0;
}
}
}