我正在尝试制作问题游戏以提高自己的技能。用户选择gameTime（在这种情况下，假设为10分钟），对于每个问题，他们都有10秒或其他时间来回答。两个计时器都工作正常，但是如何在到达终点时重新启动10秒计数器，并让下一个问题出现，直到10分钟计数器结束？
private void startGameTimer(final TextView gameCountDown, final ArrayList<MusicSQLRow> arrayQuiz) {
// le agrego 2 segundos de delay para que le de tiempo al usuario de reaccionar
new CountDownTimer(gameTime,1000){
@Override
public void onTick(long millisUntilFinished) {
gameCountDown.setText("Time Remaining: "+String.format("%d min, %d sec",
TimeUnit.MILLISECONDS.toMinutes( millisUntilFinished),
TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished))));
// the questions begin adjusted by the SharedPreferences answer time, se abre otro thread para manejar la pregunta
this.askQuestion(arrayQuiz);
}
// handles just one question
private void askQuestion(ArrayList<MusicSQLRow> arrayQuiz) {
new CountDownTimer(answerTime,1000){
@Override
public void onTick(long millisUntilFinished) {
answerCountDown.setText("Next Question in: "+ TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) );
}
@Override
public void onFinish() {
}
}.start();
}
@Override
public void onFinish() {
//unhide buttons to go back to main menu or to play again(reset the activity, check if there's no problem with shared preferences when the activitie reloads)
}
}.start();
}
最佳答案
首先：尽量不要创建长时间运行的CountDownTimer匿名实例，否则将无法处置它们，并且会泄漏整个活动。最好的选择是创建包含这些计时器的单独的类文件。
CountDownTimer gameTimer, answerTimer;
boolean gameTimerIsRunning, answerTimerIsRunning;
public void startGame(){
startGameTimer();
startAnswerTimer();
}
public void startGameTimer(){
gameTimer = new CountDownTimer(GAME_DURATION, TEXT_VIEW_UPDATE_RATE){
@Override public void onTick(long millisUntilFinished) {
updateGameTextView(millisUntilFinished);
}
@Override public void onFinish() {
gameTimerIsRunning = false;
if(answerTimerIsRunning) answerTimer.cancel();
handleEndOfTheGame();
}
};
gameTimerIsRunning = true;
gameTimer.start();
}
public void startAnswerTimer(){
if(answerTimer==null) {
answerTimer = new CountDownTimer(TIME_FOR_AN_ANSWER, TEXT_VIEW_UPDATE_RATE) {
@Override public void onTick(long millisUntilFinished) {
updateAnswerTextView(millisUntilFinished);
}
@Override public void onFinish() {
answerTimerIsRunning = false;
if (gameTimerIsRunning) {
loadNewQuestion();
startAnswerTimer();
}
};
}
answerTimerIsRunning = true;
answerTimer.start();
}
不要忘记在活动/片段onPause（）中调用gameTimer.cancel（）和answerTimer.cancel（）。
关于java - 如何在另一个CountdownTimer内的android studio CountdownTimer中重新启动(两者都工作正常)，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/31619819/