Android APP编写简单答题器

本文为大家分享了Android APP编写的简单答题器，此答题器可以通过Next按钮选择下一题，新写题目的类Question,有两个成员变量。

java代码：

package com.android.testrecord; 

/**
 * Created by wang on 16-10-19.
 */
public class Question {
  private int mTextResId;
  private boolean mAnswerTrue; 

  public Question(int textResId, boolean answerTrue) {
    mTextResId = textResId;
    mAnswerTrue = answerTrue; 

  } 

  public int getTextResId() {
    return mTextResId;
  } 

  public boolean isAnswerTrue() {
    return mAnswerTrue;
  } 

  public void setTextResId(int textResId) {
    mTextResId = textResId;
  } 

  public void setAnswerTrue(boolean answerTrue) {
    mAnswerTrue = answerTrue;
  }
}

java代码：

package com.android.testrecord; 

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast; 

public class QuizActivity extends AppCompatActivity {
  private Button mTrueButton;
  private Button mFalseButton;
  private Button mNextButton;
  private TextView mQuestionTextView;
  private Question[] mQuestionBank = new Question[] {
      new Question(R.string.question_oceans, true),
      new Question(R.string.question_mideast, false),
      new Question(R.string.question_africa, false),
      new Question(R.string.question_americas,true),
      new Question(R.string.question_asia, true),
  };
  private int mCurrentIndex = 0; 

  private void updateQuestion() {
    int question = mQuestionBank[mCurrentIndex].getTextResId();
    mQuestionTextView.setText(question);
  } 

  private void checkAnswer(boolean userProessedTrue) {
    boolean answerIsTrue = mQuestionBank[mCurrentIndex].isAnswerTrue();
    int messageId = 0;
    if (userProessedTrue == answerIsTrue)
      messageId = R.string.correct_toast;
    else
      messageId = R.string.incorrect_toast;
    Toast.makeText(this, messageId, Toast.LENGTH_SHORT).show();
  } 

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_quiz); 

    mQuestionTextView = (TextView) findViewById(R.id.question_test_view);
    // int question = mQuestionBank[mCurrentIndex].getTextResId();
    // mQuestionTextView.setText(question);
    updateQuestion(); 

    mTrueButton = (Button) findViewById(R.id.true_button);
    mTrueButton.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        // Does nothing yet, but soon!
       /* Toast.makeText(QuizActivity.this,
            R.string.incorrect_toast,
            Toast.LENGTH_SHORT).show(); */
        checkAnswer(true);
      }
    });
    mFalseButton = (Button) findViewById(R.id.false_button);
    mFalseButton.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        // Does nothing yet, but soon!
       /*  Toast.makeText(QuizActivity.this,
            R.string.correct_toast,
            Toast.LENGTH_SHORT).show(); */
        checkAnswer(false);
      }
    });
    mNextButton = (Button) findViewById(R.id.next_button);
    mNextButton.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        mCurrentIndex = (mCurrentIndex + 1) % mQuestionBank.length;
        // int question = mQuestionBank[mCurrentIndex].getTextResId();
        // mQuestionTextView.setText(question);
        updateQuestion();
      }
    });
  }
}

xml代码：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:gravity="center"
  android:orientation="vertical" >
  <TextView
    android:id="@+id/question_test_view"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="24dp"/>
  <LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="horizontal">
    <Button
      android:id="@+id/true_button"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="@string/true_button"/>
    <Button
      android:id="@+id/false_button"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="@string/false_button"/>
  </LinearLayout>
  <Button
    android:id="@+id/next_button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/next_button"/>
  </LinearLayout>

代码：

<resources>
  <string name="app_name">GeoQuiz</string>
  <string name="question_text">
    Constantinople is the largest city in Turkey.
  </string>
  <string name="true_button">True</string>
  <string name="false_button">False</string>
  <string name="correct_toast">Correct!</string>
  <string name="incorrect_toast">Incorrect!</string>
  <string name="action_settings">Settings</string>
  <string name="next_button">Next</string>
  <string name="question_oceans">The Pacific Ocean is larger than the Atlantic Ocean.</string>
  <string name="question_mideast">The Suez Canal connects the Red Sea and the Indian Ocean.</string>
  <string name="question_africa">The source of the Nile River is in Egypt.</string>
  <string name="question_americas">The Amazon River is the longest river in the Americas.</string>
  <string name="question_asia">Lake Baikal is the world\'s oldest and deepest freshwater lake.</string>
</resources>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。

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