用countdowntimer进度 - Android电子 [英] ProgressBar with a countdowntimer - Android
问题描述
我有一个20秒倒计时顺利工作在我的问答游戏。我想添加一个进度（不是 ProgressDialog ）到屏幕上。我发现为Android混乱的开发者指南。我GOOGLE了大量实例，并试图将它们组合成我的code。现在所有的，当我运行游戏与游戏中的每个问题时没有取得进步的空栏显示。
QuestionView.java
公共类QuestionView延伸活动{ INT correctAnswers = 0;
INT wrongAnswers = 0;
INT答案= 0;
INT I = 0; 长得分= 0; 长STARTTIME = 20000;
长间隔= 1000;
长点; 布尔timerHasStarted = FALSE; 串类; 按钮ANSWER1，ANSWER2，ANSWER3，answer4;
TextView的问题，pointCounter，questionNumber，timeCounter; ArrayList的＆LT;问题＆GT;查询;
定时器cdTimer; 进度条; @覆盖
公共无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.questionviewmain）; ANSWER1 =（按钮）findViewById（R.id.answer1）;
ANSWER2 =（按钮）findViewById（R.id.answer2）;
ANSWER3 =（按钮）findViewById（R.id.answer3）;
answer4 =（按钮）findViewById（R.id.answer4）; 问题=（的TextView）findViewById（R.id.question）; 类别= getIntent（）getStringExtra（类别）。
查询= getIntent（）getParcelableArrayListExtra（查询）。 pointCounter =（的TextView）findViewById（R.id.timer）;
questionNumber =（的TextView）findViewById（R.id.timeElapsedView）;
timeCounter =（的TextView）findViewById（R.id.timeCounter）; cdTimer =新的Timer（startTime时，间隔）; 巴=（进度）findViewById（R.id.progressbar）;
bar.setIndeterminate（假）;
bar.setMax（9）; loadQuestion（）;
} 公共无效loadQuestion（）{ bar.setProgress（ⅰ）; 如果（我== 10）{ endQuiz（）; }其他{ 如果（！timerHasStarted）{
cdTimer.start（）;
timerHasStarted = TRUE;
}其他{
cdTimer.start（）;
timerHasStarted = FALSE;
} 答案= queries.get（I）.getCorrectAnswer（）; question.setText（queries.get（ⅰ）.getQuery（））; answer1.setText（queries.get（ⅰ）.getA1（））;
answer2.setText（queries.get（ⅰ）.getA2（））;
answer3.setText（queries.get（ⅰ）.getA3（））;
answer4.setText（queries.get（ⅰ）.getA4（））; answer1.setOnClickListener（新OnClickListener（）{
公共无效的onClick（查看为arg0）{
queries.get（ⅰ）.setSelectedAnswer（0）;
如果（答案== 0）{
correctAnswers ++;
下一个问题（）;
}其他{
wrongAnswers ++;
下一个问题（）;
}
}
}）; answer2.setOnClickListener（新OnClickListener（）{
公共无效的onClick（查看为arg0）{
queries.get（ⅰ）.setSelectedAnswer（1）;
如果（回答== 1）{
correctAnswers ++;
下一个问题（）;
}其他{
wrongAnswers ++;
下一个问题（）;
}
}
}）; answer3.setOnClickListener（新OnClickListener（）{
公共无效的onClick（查看为arg0）{
queries.get（ⅰ）.setSelectedAnswer（2）;
如果（回答== 2）{
correctAnswers ++;
下一个问题（）;
}其他{
wrongAnswers ++;
下一个问题（）;
}
}
}）; answer4.setOnClickListener（新OnClickListener（）{
公共无效的onClick（查看为arg0）{
queries.get（ⅰ）.setSelectedAnswer（3）;
如果（回答== 3）{
correctAnswers ++;
下一个问题（）;
}其他{
wrongAnswers ++;
下一个问题（）;
}
}
}）;
}
} 公众的ArrayList＆LT;问题＆GT; getQueries（）{
返回查询;
} 公共无效nextQuestion（）{
得分=评分+分;
我++;
loadQuestion（）;
} 公共类定时器扩展CountDownTimer { 公共无效startCountdownTimer（）{
} 公共定时器（长的startTime，长间隔）{
超（startTime时，间隔）;
} @覆盖
公共无效onFinish（）{
如果（ⅰ＆GT; = 9）{
cdTimer.cancel（）;
endQuiz（）;
}其他{
wrongAnswers ++;
下一个问题（）;
}
} @覆盖
公共无效onTick（长millisUntilFinished）{
timeCounter.setText（剩余时间+（millisUntilFinished / 100））;
点=（millisUntilFinished / 100）/ 2;
pointCounter.setText（积分剩余：+分）;
如果（ⅰ小于10）{
questionNumber.setText（问题+第（i + 1）+10）;
}
}
} 公共无效endQuiz（）{
意向意图=新意图（QuestionView.this，Results.class）;
intent.putExtra（correctAnswers，correctAnswers）;
intent.putExtra（wrongAnswers，wrongAnswers）;
intent.putExtra（得分，得分）;
intent.putParcelableArrayListExtra（查询，查询）;
intent.putExtra（类别，类别）;
startActivity（意向）;
}
}
XML code
＆LT;进度
机器人：ID =@ + ID /进度
机器人：layout_height =WRAP_CONTENT
机器人：layout_width =WRAP_CONTENT
机器人：知名度=看得见
风格=@安卓风格/ Widget.ProgressBar.Horizontal/＆GT;
我所寻找的是在进度条慢慢剔下来，直到20秒每题不见了用户分配。
新建答案结果
要做到这一点，让我们一个新的行添加到onTick（）：bar.setProgress（（INT）Math.round（millisUntilFinished / 1000.0））;（您可能需要调整的数据类型，我是从我的编译器了......此外，我不喜欢CountDownTimer类，它是不准确的，往往跳过倒数第二个号码。我写到这里的替代类：机器人CountDownTimer - 额外的延迟毫秒之间蜱）
原来的答案结果
我有几个指针：
你有没有为你的进度规定的最大值？
bar.setMax（9）;
我建议加载
I的进步，而不是10的恒定值：bar.setProgress（I）
如果您还没有看到任何进展确保你是不是在不确定模式：
bar.setIndeterminate（假）;（这个假设你正在使用进度，能够<一个href=\"https://developer.android.com/reference/android/widget/ProgressBar.html#setIndeterminate%28boolean%29\"相对=nofollow>描绘进步。）
加入结果
移动此code到的onCreate（）：巴=（进度）findViewById（R.id.progressbar）;
bar.setIndeterminate（假）; //可能没有必要
bar.setMax（9）;然后移动此行
loadQuestion（）：bar.setProgress（I）否则进展将永远不会被更新，因为你只创建一个CountDownTimer，你永远不实际调用
startCountdownTimer（）。I have a 20 second countdown timer successfully working on my trivia game. I want to add a
ProgressBar(not aProgressDialog) to the screen. I found the developer guide for Android confusing. I googled lots of examples and tried to combine them into my code. Right now all that displays when I run a game is an empty bar with no "progress" made during each question of the game.QuestionView.java
public class QuestionView extends Activity { int correctAnswers = 0; int wrongAnswers = 0; int answer = 0; int i = 0; long score = 0; long startTime = 20000; long interval = 1000; long points; boolean timerHasStarted = false; String category; Button answer1, answer2, answer3, answer4; TextView question, pointCounter, questionNumber, timeCounter; ArrayList<Question> queries; Timer cdTimer; ProgressBar bar; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.questionviewmain); answer1 = (Button)findViewById(R.id.answer1); answer2 = (Button)findViewById(R.id.answer2); answer3 = (Button)findViewById(R.id.answer3); answer4 = (Button)findViewById(R.id.answer4); question = (TextView)findViewById(R.id.question); category = getIntent().getStringExtra("category"); queries = getIntent().getParcelableArrayListExtra("queries"); pointCounter = (TextView)findViewById(R.id.timer); questionNumber = (TextView)findViewById(R.id.timeElapsedView); timeCounter = (TextView)findViewById(R.id.timeCounter); cdTimer = new Timer(startTime, interval); bar = (ProgressBar)findViewById(R.id.progressbar); bar.setIndeterminate(false); bar.setMax(9); loadQuestion(); } public void loadQuestion() { bar.setProgress(i); if(i == 10) { endQuiz(); } else { if(!timerHasStarted) { cdTimer.start(); timerHasStarted = true; } else { cdTimer.start(); timerHasStarted = false; } answer = queries.get(i).getCorrectAnswer(); question.setText(queries.get(i).getQuery()); answer1.setText(queries.get(i).getA1()); answer2.setText(queries.get(i).getA2()); answer3.setText(queries.get(i).getA3()); answer4.setText(queries.get(i).getA4()); answer1.setOnClickListener(new OnClickListener() { public void onClick(View arg0) { queries.get(i).setSelectedAnswer(0); if(answer == 0) { correctAnswers++; nextQuestion(); } else { wrongAnswers++; nextQuestion(); } } }); answer2.setOnClickListener(new OnClickListener() { public void onClick(View arg0) { queries.get(i).setSelectedAnswer(1); if(answer == 1) { correctAnswers++; nextQuestion(); } else { wrongAnswers++; nextQuestion(); } } }); answer3.setOnClickListener(new OnClickListener() { public void onClick(View arg0) { queries.get(i).setSelectedAnswer(2); if(answer == 2) { correctAnswers++; nextQuestion(); } else { wrongAnswers++; nextQuestion(); } } }); answer4.setOnClickListener(new OnClickListener() { public void onClick(View arg0) { queries.get(i).setSelectedAnswer(3); if(answer == 3) { correctAnswers++; nextQuestion(); } else { wrongAnswers++; nextQuestion(); } } }); } } public ArrayList<Question> getQueries() { return queries; } public void nextQuestion() { score = score + points; i++; loadQuestion(); } public class Timer extends CountDownTimer { public void startCountdownTimer() { } public Timer(long startTime, long interval) { super(startTime, interval); } @Override public void onFinish() { if(i >= 9) { cdTimer.cancel(); endQuiz(); } else { wrongAnswers++; nextQuestion(); } } @Override public void onTick(long millisUntilFinished) { timeCounter.setText("Time remaining: " + (millisUntilFinished / 100)); points = (millisUntilFinished / 100) / 2; pointCounter.setText("Points remaining: " + points); if(i < 10) { questionNumber.setText("Question " + (i + 1) + " of 10"); } } } public void endQuiz() { Intent intent = new Intent(QuestionView.this, Results.class); intent.putExtra("correctAnswers", correctAnswers); intent.putExtra("wrongAnswers", wrongAnswers); intent.putExtra("score", score); intent.putParcelableArrayListExtra("queries", queries); intent.putExtra("category", category); startActivity(intent); } }XML code
<ProgressBar android:id="@+id/progressbar" android:layout_height="wrap_content" android:layout_width="wrap_content" android:visibility="visible" style="@android:style/Widget.ProgressBar.Horizontal" />
解决方案What I am looking for is for the ProgressBar to slowly tick down until the 20 seconds the user is allotted for each question is gone.
New Answer
To do this let's add a new line toonTick():bar.setProgress((int) Math.round(millisUntilFinished / 1000.0));(You may need to tweak the data types, I am away from my compiler... Also I don't like the CountDownTimer class, it is inaccurate and often skips the second to last number. I wrote an alternate class here: android CountDownTimer - additional milliseconds delay between ticks)
Original Answer
I have a couple pointers:
Have you defined a maximum value for your ProgressBar?
bar.setMax(9);I suggest loading
ias the progress instead of the constant value of 10:bar.setProgress(i);If you still do not see any progress ensure that you are not in indeterminate mode:
bar.setIndeterminate(false);(This assume that you are using a ProgressBar that can depict progress.)
Addition
Move this code intoonCreate():bar = (ProgressBar)findViewById(R.id.progressbar); bar.setIndeterminate(false); // May not be necessary bar.setMax(9);Then move this line to
loadQuestion():bar.setProgress(i);Otherwise the progress will never be updated since you only create one CountDownTimer and you never actually call
startCountdownTimer().这篇关于用countdowntimer进度 - Android电子的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
