本篇博文最后修改时间:2017年01月06日,11:06。
一、简介
本文介绍如何实现多项问答题。
二、实验平台
开发平台:Eclipse IDE for Java Developers(Version: Luna Service Release 2 (4.4.2))
安卓系统: Android 4.3
手机:红米1S
三、版权声明
博主:甜甜的大香瓜
声明:喝水不忘挖井人,转载请注明出处。
原文地址:http://blog.csdn.NET/feilusia
联系方式:[email protected]
香瓜BLE之CC2541群:127442605
香瓜BLE之CC2640群:557278427
香瓜BLE之Android群:541462902
五、基础知识
暂无
六、实验步骤
1、创建新的类——TrueFalse
1)右键单击 com.bignerdranch.android.geoquiz 类包,选择New—— Class
在TrueFalse.java中添加构造函数。
package com.example.linjie;
/**
* @author Administrator
*
*/
public class TrueFalse {
private int mQuestion;
private boolean mTrueQuestion;
public TrueFalse(int question, boolean trueQuestion){
mQuestion = question;
mTrueQuestion = trueQuestion;
}
}
打开Eclipse首选项对话框(Mac用户选择Eclipse菜单,Windows用户选择Windows ——Preferences菜单)。
并填充如下图:
在TrueFalse.java中会自动添加set和get等方法
package com.example.linjie;
/**
* @author Administrator
*
*/
public class TrueFalse {
private int mQuestion;
private boolean mTrueQuestion;
public TrueFalse(int question, boolean trueQuestion){
mQuestion = question;
mTrueQuestion = trueQuestion;
}
public int getQuestion() {
return mQuestion;
}
public void setQuestion(int question) {
mQuestion = question;
}
public boolean isTrueQuestion() {
return mTrueQuestion;
}
public void setTrueQuestion(boolean trueQuestion) {
mTrueQuestion = trueQuestion;
}
}
3)模型——控制器——视图(Model-View-Controller,简称MVC)
这样就能通过控制器把视图和模型分开,视图也就是UI,而模型则是存储重要数据。
2、视图层
1)组件activity_main.xml
2)添加“左”和“右”的图标
在下图的三个文件夹中添加3种不同像素的“左”“右”图标
并将图标拖拽到项目工程中:
3、字符串srings.xml
甜甜的大香瓜之真心话测试
问题一:香瓜哥很帅吗?
你也很帅了啦!~
纳尼?再给你一次机会!
问题二:你长得好看吗?
再照照镜子,再照照镜子,再照照镜子……
我就喜欢诚实的人!
问题三:这个app很棒吧?
哇哈哈哈,还~好~了~啦~
您好,此按键已失灵!
是
否
上一页
下一页
Settings
package com.example.linjie;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
private Button mTrueButton;
private Button mFalseButton;
private Button mNextButton;
private Button mPrevButton;
private TextView mQuestionTextView;
private TrueFalse[] mQuestionBank = new TrueFalse[]{
new TrueFalse(R.string.question_one, true),
new TrueFalse(R.string.question_two, false),
new TrueFalse(R.string.question_three, true),
};
private int mCurrentIndex = 0;
public void updateQuestion(){
int question = mQuestionBank[mCurrentIndex].getQuestion();
mQuestionTextView.setText(question);
}
public void checkAnswer(boolean userPressedTrue){
boolean answerIsTrue = mQuestionBank[mCurrentIndex].isTrueQuestion();
int messageResId = 0;
switch(mCurrentIndex){
case 0:
if(userPressedTrue == true){
messageResId = R.string.question_one_correct_toast;
}else{
messageResId = R.string.question_one_incorrect_toast;
}
Toast.makeText(this, messageResId, Toast.LENGTH_SHORT).show();
if(userPressedTrue == answerIsTrue){
mCurrentIndex = (mCurrentIndex + 1) % mQuestionBank.length;
updateQuestion();
}
break;
case 1:
if(userPressedTrue == true){
messageResId = R.string.question_two_correct_toast;
}else{
messageResId = R.string.question_two_incorrect_toast;
}
Toast.makeText(this, messageResId, Toast.LENGTH_SHORT).show();
if(userPressedTrue == answerIsTrue){
mCurrentIndex = (mCurrentIndex + 1) % mQuestionBank.length;
updateQuestion();
}
break;
case 2:
if(userPressedTrue == true){
messageResId = R.string.question_three_correct_toast;
}else{
messageResId = R.string.question_three_incorrect_toast;
}
Toast.makeText(this, messageResId, Toast.LENGTH_SHORT).show();
if(userPressedTrue == answerIsTrue){
mCurrentIndex = (mCurrentIndex + 1) % mQuestionBank.length;
updateQuestion();
}
break;
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mQuestionTextView = (TextView)findViewById(R.id.question_text_view);
updateQuestion();
mTrueButton = (Button)findViewById(R.id.true_button);
mTrueButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
checkAnswer(true);
}
});
mFalseButton = (Button)findViewById(R.id.false_button);
mFalseButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
checkAnswer(false);
}
});
mNextButton = (Button)findViewById(R.id.next_button); //前进按键
mNextButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mCurrentIndex = (mCurrentIndex + 1) % mQuestionBank.length;
updateQuestion();
}
});
mPrevButton = (Button)findViewById(R.id.prev_button); //后退按键
mPrevButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(mCurrentIndex == 0){
mCurrentIndex = mQuestionBank.length - 1;
}else{
mCurrentIndex = mCurrentIndex - 1;
}
updateQuestion();
}
});
}
@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;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
此时可以点击“上一页”和“下一页”进行上下翻页,也可以点击“是”和“否”进行答题,答对了会进入下一题,答错则继续答题。
注:如果想点击问题的文字也能进入下一题,则需要给text增加一个监听器: