实施 1 问题
疑问1：我尝试使用进度条进行计时器。就像每个问题说 5 秒。但是，进度条会显示倒计时值。我的问题是时间结束后（值达到 0 ），我默认不去下一个问题..
实施 2 问题
疑问 2：另外，我如何使用进度条设置倒数计时器，该进度条从第一个问题开始并不断减小值直到指定的限制。就像说我希望我的测验中的所有 20 个问题在 120 分钟内得到回答。所以进度条应该是 120,119 ....1 。达到 0 后，我应该自动重定向到结果页面。
QuestionActivity.java
package works.really.good;
import java.sql.Date;
import java.util.List;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.text.format.DateFormat;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ProgressBar;
import android.widget.RadioButton;
import android.widget.TextView;
import works.really.good.quiz.GamePlay;
import works.really.good.quiz.Question;
import works.really.good.util.Utility;
public class QuestionActivity extends Activity implements OnClickListener{
private Question currentQ;
private GamePlay currentGame;
ProgressBar mProgressBar;
CountDownTimer mCountDownTimer;
TextView tv;
int i=0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.question);
currentGame = ((MyApplication)getApplication()).getCurrentGame();
currentQ = currentGame.getNextQuestion();
Button nextBtn = (Button) findViewById(R.id.nextBtn);
nextBtn.setOnClickListener(this);
setQuestions();
tv = (TextView) findViewById(R.id.tv_counter);
mProgressBar=(ProgressBar)findViewById(R.id.progressbar);
mProgressBar.setProgress(i);
mCountDownTimer=new CountDownTimer(5000,1000) {
@Override
public void onTick(long millisUntilFinished) {
Log.v("Log_tag", "Tick of Progress"+ i+ millisUntilFinished);
i++;
String time = (String) DateFormat.format("ss", new Date(millisUntilFinished));
tv.setText(time);
mProgressBar.setProgress(i);
}
@Override
public void onFinish() {
//Do what you want
i++;
mProgressBar.setProgress(i);
}
};
mCountDownTimer.start();
}
private void setQuestions() {
//set the question text from current question
String question = Utility.capitalise(currentQ.getQuestion()) + "?";
TextView qText = (TextView) findViewById(R.id.question);
qText.setText(question);
//set the available options
List<String> answers = currentQ.getQuestionOptions();
TextView option1 = (TextView) findViewById(R.id.answer1);
option1.setText(Utility.capitalise(answers.get(0)));
TextView option2 = (TextView) findViewById(R.id.answer2);
option2.setText(Utility.capitalise(answers.get(1)));
TextView option3 = (TextView) findViewById(R.id.answer3);
option3.setText(Utility.capitalise(answers.get(2)));
TextView option4 = (TextView) findViewById(R.id.answer4);
option4.setText(Utility.capitalise(answers.get(3)));
}
@Override
public void onClick(View arg0) {
/**
* validate a checkbox has been selected
*/
if (!checkAnswer()) return;
/**
* check if end of game
*/
if (currentGame.isGameOver()){
Intent i = new Intent(this, EndgameActivity.class);
startActivity(i);
finish();
}
else{
Intent i = new Intent(this, QuestionActivity.class);
startActivity(i);
finish();
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event)
{
switch (keyCode)
{
case KeyEvent.KEYCODE_BACK :
return true;
}
return super.onKeyDown(keyCode, event);
}
private boolean checkAnswer() {
String answer = getSelectedAnswer();
if (answer==null){
return false;
}
else {
if (currentQ.getAnswer().equalsIgnoreCase(answer))
{
currentGame.incrementRightAnswers();
}
else{
currentGame.incrementWrongAnswers();
}
return true;
}
}
private String getSelectedAnswer() {
RadioButton c1 = (RadioButton)findViewById(R.id.answer1);
RadioButton c2 = (RadioButton)findViewById(R.id.answer2);
RadioButton c3 = (RadioButton)findViewById(R.id.answer3);
RadioButton c4 = (RadioButton)findViewById(R.id.answer4);
if (c1.isChecked())
{
if (currentQ.getAnswer().equalsIgnoreCase(c1.getText().toString()))
{
c1.setTextColor(Color.GREEN);
}
else
{
c1.setTextColor(Color.RED);
if (currentQ.getAnswer().equalsIgnoreCase(c2.getText().toString()))
{
c2.setTextColor(Color.GREEN);
}
else if (currentQ.getAnswer().equalsIgnoreCase(c3.getText().toString()))
{
c3.setTextColor(Color.GREEN);
}
else if (currentQ.getAnswer().equalsIgnoreCase(c4.getText().toString()))
{
c4.setTextColor(Color.GREEN);
}
}
return c1.getText().toString();
}
if (c2.isChecked())
{
if(currentQ.getAnswer().equalsIgnoreCase(c2.getText().toString()))
{
c2.setTextColor(Color.GREEN);
}
else
{
c2.setTextColor(Color.RED);
if (currentQ.getAnswer().equalsIgnoreCase(c1.getText().toString()))
{
c1.setTextColor(Color.GREEN);
}
else if (currentQ.getAnswer().equalsIgnoreCase(c3.getText().toString()))
{
c3.setTextColor(Color.GREEN);
}
else if (currentQ.getAnswer().equalsIgnoreCase(c4.getText().toString()))
{
c4.setTextColor(Color.GREEN);
}
}
return c2.getText().toString();
}
if (c3.isChecked())
{
if(currentQ.getAnswer().equalsIgnoreCase(c3.getText().toString()))
{
c3.setTextColor(Color.GREEN);
}
else
{
c3.setTextColor(Color.RED);
if (currentQ.getAnswer().equalsIgnoreCase(c1.getText().toString()))
{
c1.setTextColor(Color.GREEN);
}
else if (currentQ.getAnswer().equalsIgnoreCase(c2.getText().toString()))
{
c2.setTextColor(Color.GREEN);
}
else if (currentQ.getAnswer().equalsIgnoreCase(c4.getText().toString()))
{
c4.setTextColor(Color.GREEN);
}
}
return c3.getText().toString();
}
if (c4.isChecked())
{
if(currentQ.getAnswer().equalsIgnoreCase(c4.getText().toString()))
{
c4.setTextColor(Color.GREEN);
}
else
{
c4.setTextColor(Color.RED);
if (currentQ.getAnswer().equalsIgnoreCase(c1.getText().toString()))
{
c1.setTextColor(Color.GREEN);
}
else if (currentQ.getAnswer().equalsIgnoreCase(c2.getText().toString()))
{
c2.setTextColor(Color.GREEN);
}
else if (currentQ.getAnswer().equalsIgnoreCase(c3.getText().toString()))
{
c3.setTextColor(Color.GREEN);
}
}
return c4.getText().toString();
}
return null;
}
}
问题.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:gravity="center_horizontal"
android:background="@drawable/background">
<LinearLayout android:orientation="horizontal"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:paddingTop="15dip" android:paddingBottom="15dip"
android:gravity="center_horizontal">
<ImageView android:id="@+id/logo" android:layout_width="wrap_content"
android:layout_height="wrap_content" android:src="@drawable/logo2"
android:contentDescription="Quiz_Logo" />
</LinearLayout>
<LinearLayout android:orientation="horizontal"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:paddingTop="5dip" android:paddingBottom="5dip"
android:gravity="center_horizontal" >
<RadioGroup android:layout_width="fill_parent"
android:layout_height="wrap_content" android:orientation="vertical"
android:id="@+id/group1">
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content" android:textColor="#ffffff"
android:textStyle="bold" android:id="@+id/question"/>
<RadioButton android:checked="false" android:id="@+id/answer1" />
<RadioButton android:checked="false" android:id="@+id/answer2" />
<RadioButton android:checked="false" android:id="@+id/answer3" />
<RadioButton android:checked="false" android:id="@+id/answer4" />
</RadioGroup>
</LinearLayout>
<LinearLayout android:orientation="horizontal"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:paddingTop="5dip" android:paddingBottom="5dip"
android:gravity="center_horizontal">
<Button android:text="Next" android:id="@+id/nextBtn"
android:layout_width="80dip"
android:layout_height="wrap_content" android:background="@drawable/button_selector"
android:paddingTop="5dip" android:paddingBottom="5dip"
android:textColor="#ffffff" />
</LinearLayout>
<LinearLayout android:orientation="horizontal"
android:layout_width="290.0dip" android:layout_height="wrap_content"
android:paddingTop="5dip" android:paddingBottom="5dip" android:layout_marginTop="50dp"
android:gravity="center_horizontal" >
<ProgressBar
android:id="@+id/progressbar"
android:max="5"
android:progress="0"
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="1.0"
style="@android:style/Widget.ProgressBar.Horizontal"
/>
<TextView
android:id="@+id/tv_counter"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="5"/>
</LinearLayout>
</LinearLayout>
上图是我的问题活动，我想显示并启动倒数进度计时器。测验共有 20 个问题。
我想在问题活动开始后立即启动计时器，时间间隔为 2 分钟（120 秒），并希望它连续减少 1 秒，直到它达到 0。
此外，我希望进度条每经过一秒就减少 1%，并且进度条旁边显示的值（文本）也应该同时减少。
就像 120 秒，进度条是 100% 。它应该是 99% 持续 119 秒，依此类推。
达到 0 后，用户应该被重定向到结果页面（EndgameActivity.java）。
如果对我的代码有任何疑问，我愿意将我的代码邮寄给任何愿意帮助我的人。