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finish quiz app /정답여부 확인가능케 설정/앞/뒤로 재생 / 코딩
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2020. 8. 23. 01:11
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//questionTextView를 method로 따로 지정 = 화면에 answer지 띠우기.
//checkAnswer method
//
case R.id.previous_button:
if(currentQuestionIndex>0){
currentQuestionIndex=(currentQuestionIndex + -1) % questionBank.length; // 무한반복
updateQuestion();
}
break;
mainActivity
package com.example.truecitizenquiz;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity implements View.OnClickListener { //implement설정됨.
private Button falseButton;
private Button trueButton;
private TextView questionTextView; //variable 설정 V
private ImageButton nextButton; // V
private ImageButton previousButton;
private int currentQuestionIndex=0; // V
private boolean userChooseCorrect;
private Question[] questionBank = new Question[]{ // Array define in android studio V
new Question(R.string.question_amendments,false), //call constructor=setter
new Question(R.string.question_constitution,true),
new Question(R.string.question_declaration,true),
new Question(R.string.question_independence_rights,true),
new Question(R.string.question_religion,true),
new Question(R.string.question_government,false),
new Question(R.string.question_government_feds,false),
new Question(R.string.question_government_senators,true),
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
falseButton = findViewById(R.id.false_button); // xml 연결
trueButton = findViewById(R.id.true_button);
questionTextView =findViewById(R.id.answer_text_view);
nextButton = findViewById(R.id.next_button); // V
previousButton = findViewById(R.id.previous_button); // V
falseButton.setOnClickListener(this); //click 한다면 this로 -> make implement 클릭
trueButton.setOnClickListener(this);
nextButton.setOnClickListener(this); // V
previousButton.setOnClickListener(this);
}
@Override //click시 method(->this) implement 설정.
public void onClick(View view) {
switch(view.getId()){ //ID가 있다면
case R.id.false_button:
checkAnswer(userChooseCorrect=false);
break;
case R.id.true_button:
checkAnswer(userChooseCorrect=true);
break;
case R.id.next_button: // V 다음 재생
//go to next question
currentQuestionIndex=(currentQuestionIndex + 1) % questionBank.length; // 무한반복
updateQuestion();
break;
case R.id.previous_button: // V 이전재생
if(currentQuestionIndex>0){
currentQuestionIndex=(currentQuestionIndex + -1) % questionBank.length; // 무한반복
updateQuestion();
}
break;
}
//questionTextView를 method로 따로 지정
private void updateQuestion(){
Log.d("Currnet","onClick"+currentQuestionIndex);
questionTextView.setText(questionBank[currentQuestionIndex].getAnswerResId());
}
//checkAnswer method
private void checkAnswer(boolean userChooseCorrect){
boolean answerIsTrue = questionBank[currentQuestionIndex].isAnswerTrue(); //true이다
int toastMessageId = 0;
if(userChooseCorrect == answerIsTrue){
toastMessageId = R.string.correct_answer;
}else{
toastMessageId = R.string.wrong_answer;
}
Toast.makeText(MainActivity.this, toastMessageId, Toast.LENGTH_SHORT).show(); //토스트로 띄우기
}
}question class
package com.example.truecitizenquiz;
public class Question {
private int answerResId; //variables
private boolean answerTrue;
public Question(int answerResId, boolean answerTrue) { //constructor
this.answerResId = answerResId;
this.answerTrue = answerTrue;
}
//getter and seeter
public int getAnswerResId() {
return answerResId;
}
public void setAnswerResId(int answerResId) {
this.answerResId = answerResId;
}
public boolean isAnswerTrue() {
return answerTrue;
}
public void setAnswerTrue(boolean answerTrue) {
this.answerTrue = answerTrue;
}
}
string.xml
<resources>
<string name="app_name">TrueCitizenQuiz</string>
<string name="question_declaration">The Declaration of Independance was Adpoted in 1776</string>
<string name="true_text">true</string>
<string name="false_text">false</string>
<string name="correct_answer">That\'s correct</string>
<string name="wrong_answer">That\'s incorrect</string>
<string name="question_constitution">The Supreme law of the land is the Constitution.</string>
<string name="question_amendments">The (U.S.) Constitution has 26 Amendments.</string>
<string name="question_independence_rights">The two rights in the Declaration of Independence are:
\n \t <b>life</b> \n \t <b>pursuit of happiness</b>.</string>
<string name="question_religion">Freedom of religion means:
\n \t <b>You can practice any religion, or not practice a religion</b>.</string>
<string name="question_government">Journalists is one branch or part of the government.</string>
<string name="question_government_feds">Congress does not make federal laws.</string>
<string name="question_government_senators">There are one hundred (100) U.S. Senators.</string>
<string name="next_text">next</string>
<string name="todo">TODO</string>
</resources>activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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="match_parent"
android:orientation="vertical"
android:gravity="center"
tools:context=".MainActivity"
tools:ignore="ExtraText"
android:background="@color/colorPrimaryDark">
<ImageView
android:src="@drawable/streifenhoernchen"
android:layout_width="147dp"
android:layout_height="141dp" />
<TextView
android:id="@+id/answer_text_view"
android:text="@string/question_declaration"
android:textColor="@android:color/white"
android:textSize="20sp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="34dp"
android:orientation="horizontal">
<Button
android:id="@+id/true_button"
android:text="@string/true_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="@+id/false_button"
android:text="@string/false_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="34dp"
android:orientation="horizontal"> <!-- 이미지 버튼 추가-->
<ImageButton
android:id="@+id/previous_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="@android:drawable/ic_media_previous" />
<ImageButton
android:src="@android:drawable/ic_media_next"
android:contentDescription="@string/todo"
android:id="@+id/next_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
tools:ignore="ContentDescription" />
</LinearLayout>
</LinearLayout>