大家好日子:)我需要帮助我的测验应用程序，我是新的android，我的问题是我怎么能重新启动进度条的动画？每次我得到正确的答案。计时器已经用正确的答案重新启动每个问题，但进度条的动画仍在运行。我已经研究过如何重启进度条。所有答案都非常感谢tnx和advance :)每个问题有30秒倒计时
这是我的进度计时器代码
public class QuestionActivity extends Activity {
MediaPlayer mySound;
List<Question> quesList;
int score = 0;
int qid = 0;
int i = 5;
ProgressBar mProgressBar;
CountDownTimer mCountDownTimer;
// Animation
Animation animFadein;
Question currentQ;
TextView txtQuestion, scored;
Button button1, button2, button3, button4,helpbtn;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
public void help (View view){
helpbtn=(Button)findViewById(R.id.helpbtn);
helpbtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String AnswerString = currentQ.getANSWER();
//match DB answer to selected answer, turn it visible if it is correct
if(button1.getText().equals(AnswerString)){
button1.setBackgroundColor(Color.GRAY);
} else if(button2.getText().equals(AnswerString)){
button2.setBackgroundColor(Color.GRAY);
} else if(button3.getText().equals(AnswerString)){
button3.setBackgroundColor(Color.GRAY);
} else if(button4.getText().equals(AnswerString)){
button4.setBackgroundColor(Color.GRAY);
}
//eliminate 2 button
// button1 .setVisibility(View.INVISIBLE);
// button2 .setVisibility(View.INVISIBLE);
// button3 .setVisibility(View.INVISIBLE);
// button4 .setVisibility(View.INVISIBLE);
}
});
}
@RequiresApi(api = Build.VERSION_CODES.HONEYCOMB)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_qestion);
QuizHelper db = new QuizHelper(this); // my question bank class
quesList = db.getAllQuestions(); // this will fetch all questions
currentQ = quesList.get(qid); // the current question
mySound = MediaPlayer.create(this, R.raw.bensoundcute); // music background
mySound.start();
mySound.setLooping(true);
txtQuestion = (TextView) findViewById(R.id.txtQuestion);
// load the textQuestion animation
animFadein = AnimationUtils.loadAnimation(getApplicationContext(),
R.anim.fade_in);
// the text view in which the question will be displayed
// the 4 buttons,
// the idea is to set the text of 4 buttons with the options from question bank
button1 = (Button) findViewById(R.id.button1);
button2 = (Button) findViewById(R.id.button2);
button3 = (Button) findViewById(R.id.button3);
button4 = (Button) findViewById(R.id.button4);
// the text view in which score will be displayed
scored = (TextView) findViewById(R.id.score);
// method which will set the things up for our game
setQuestionView(false);
mProgressBar = (ProgressBar) findViewById(progressbar);
mProgressBar.setProgress(i);
mProgressBar.setMax(100);
mProgressBar.setIndeterminate(false);
mCountDownTimer = new CountDownTimer(30000,299) {
@RequiresApi(api = Build.VERSION_CODES.HONEYCOMB)
@Override
public void onTick(long millisUntilFinished) {
Log.v("Log_tag", "Tick of Progress" + i + millisUntilFinished);
i++;
mProgressBar.setRotation(180);
mProgressBar.setProgress(i);
}
@Override
public void onFinish() {
Toast.makeText(getApplicationContext(), "TIME is UP!", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(QuestionActivity.this,
ResultActivity.class);
// passing the int value
Bundle b = new Bundle();
b.putInt("score", score); // Your score
intent.putExtras(b); // Put your score to your next
startActivity(intent);
mCountDownTimer.cancel();
finish();
}
};
txtQuestion.setAnimation(animFadein);
txtQuestion.startAnimation(animFadein);
mCountDownTimer.start();
// button click listeners
final MediaPlayer buttonSound = MediaPlayer.create(this, R.raw.play);
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
buttonSound.start();
// passing the button text to other method
// to check whether the answer is correct or not
// same for all three buttons
getAnswer(button1.getText().toString());
}
});
button2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
buttonSound.start();
getAnswer(button2.getText().toString());
}
});
button3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
buttonSound.start();
getAnswer(button3.getText().toString());
}
});
button4.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
buttonSound.start();
getAnswer(button4.getText().toString());
}
});
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
}
@Override
protected void onPause(){
super.onPause();
mySound.release();
finish();
}
@Override
public void onBackPressed() {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setCancelable(false);
builder.setMessage("Do you want to Exit?");
builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//if user pressed "yes", then he is allowed to exit from application
dialog.dismiss();
onYesClick();
}
private void onYesClick() {
Intent setIntent = new Intent(Intent.ACTION_MAIN);
setIntent.addCategory(Intent.CATEGORY_HOME);
setIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(setIntent);
mCountDownTimer.cancel();
finish();
QuestionActivity.this.finish();
}
});
builder.setNegativeButton("No", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//if user select "No", just cancel this dialog and continue with app
dialog.cancel();
}
});
AlertDialog alert = builder.create();
alert.show();
}
public void getAnswer(String AnswerString) {
//If timer is running stop and restart
if(mCountDownTimer != null) {
mCountDownTimer.cancel(); // Stop Timer
mCountDownTimer.start(); // Start timer
}
if (currentQ.getANSWER().equals(AnswerString)) {
// if conditions matches increase the int (score) by 1
// and set the text of the score view
//Intent intent = new Intent(this, QuestionActivity.class);
//startActivity(intent);
Toast.makeText(getApplicationContext(), "CORRECT!", Toast.LENGTH_SHORT).show();
score++;
scored.setText("Score: " + score + " /100");
txtQuestion.setAnimation(animFadein);
txtQuestion.startAnimation(animFadein);
mProgressBar.setProgress(0);
mCountDownTimer.cancel();
}
else {
// if unlucky start activity and finish the game
Toast.makeText(getApplicationContext(),
"Sorry! Better luck next time.",
Toast.LENGTH_SHORT)
.show();
Intent intent = new Intent(QuestionActivity.this,
ResultActivity.class);
// passing the int value
Bundle b = new Bundle();
b.putInt("score", score); // Your score
intent.putExtras(b); // Put your score to your next
setQuestionView(false);
startActivity(intent);
mCountDownTimer.cancel();
finish();
}
if(qid < 100) {
// if questions are not over then do this
currentQ = quesList.get(qid);
setQuestionView(true);
txtQuestion.setAnimation(animFadein);
txtQuestion.startAnimation(animFadein);
button1 .setBackgroundColor(Color.WHITE);
button2 .setBackgroundColor(Color.WHITE);
button3 .setBackgroundColor(Color.WHITE);
button4 .setBackgroundColor(Color.WHITE);
}
else {
// if unlucky start activity and finish the game
Toast.makeText(getApplicationContext(),
"Game Over.",
Toast.LENGTH_SHORT)
.show();
Intent intent = new Intent(QuestionActivity.this,
ResultActivity.class);
// passing the int value
Bundle b = new Bundle();
b.putInt("score", score); // Your score
intent.putExtras(b); // Put your score to your next
startActivity(intent);
mCountDownTimer.cancel();
finish();
}
}
private boolean setQuestionView(boolean b) {
// the method which will put all things together
txtQuestion.setText(currentQ.getQUESTION());
button1.setText(currentQ.getOPTA());
button2.setText(currentQ.getOPTB());
button3.setText(currentQ.getOPTC());
button4.setText(currentQ.getOPTD());
qid++;
return b;
}
答案 0 :(得分：0)
如果答案正确，请将进度条度设置为零。 如果答案是正确的，请应用此行。
mProgressBar.setRotation(0);
答案 1 :(得分：0)
看起来您的意思是要重置进度。在这种情况下，请致电mProgressBar.setProgress(0)。另外，请不要忘记通过调用mCountDownTimer.cancel()来取消计时器。