当我点击按钮时,每次调用媒体播放器的代码(从评论开始://媒体播放器的代码开始)。一段时间后,当我点击按钮时,声音不再播放。
就像:我点击了10次,当我再次点击它时,它会返回声音,它会停止并且不再起作用。感谢您的关注,如果下面有任何解决方案评论! :d
logcat的:
E / AudioFlinger:不再有可用的曲目名称
E / AudioFlinger:createTrack_l()initCheck失败-12;没有控制块?
E / AudioTrack:AudioFlinger无法创建曲目,状态:-12
E / AudioSink:无法创建音轨
E / ExtendedNuPlayerDecoder:打开音频接收器时出错。可能是致命的!!!
**主要活动代码'*:
public class QuizActivity extends AppCompatActivity {
private ActionBarDrawerToggle mToggle;
private QuestionLibrary mQuestionLibrary = new QuestionLibrary();
private TextView mScoreView;
private TextView mQuestionView;
private Button mButtonChoice1;
private Button mButtonChoice2;
private Button mButtonChoice3;
private String mAnswer;
private int mScore = 0;
private int mQuestionNumber = 0;
Dialog dialog;
Dialog dialog2;
TextView closeButton;
TextView closeButton2;
CheckBox checkBoxmp;
private MediaPlayer mp, mp2;
SharedPreferences mypref;
SharedPreferences.Editor editor;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_quiz);
//Dialog 1
createDialog();
Button dialogButton = (Button) findViewById(R.id.dialogbtn);
dialogButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.show();
}
});
closeButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
//end Dialog 1
//Dialog 2
createDialog2();
Button dialogButton2 = (Button) findViewById(R.id.dialogbtn2);
dialogButton2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog2.show();
}
});
closeButton2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog2.dismiss();
}
});
//end Dialog 2
SharedPreferences mypref = getPreferences(MODE_PRIVATE);
final SharedPreferences.Editor editor = mypref.edit();
checkBoxmp.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
editor.putBoolean("playSounds", !isChecked);
editor.commit();
if (!isChecked){
mp.setVolume(1,1);
mp2.setVolume(1,1);
}else{
mp.setVolume(0,0);
mp2.setVolume(0,0);
}
}
})
;
final boolean playSounds = mypref.getBoolean("playSounds", false);
checkBoxmp.setChecked(!playSounds);
if(playSounds){
mp.setVolume(1,1);
mp2.setVolume(1,1);
}
else{
mp.setVolume(0,0);
mp2.setVolume(0,0);
}
TextView shareTextView = (TextView) findViewById(R.id.share);
shareTextView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent myIntent = new Intent(Intent.ACTION_SEND);
myIntent.setType("text/plain");
myIntent.putExtra(Intent.EXTRA_SUBJECT, "Hello!");
myIntent.putExtra(Intent.EXTRA_TEXT, "My highscore in Quizzi is very high! I bet you can't beat me except you are cleverer than me. Download the app now! https://play.google.com/store/apps/details?id=amapps.impossiblequiz");
startActivity(Intent.createChooser(myIntent, "Share with:"));
}
});
mQuestionLibrary.shuffle();
setSupportActionBar((Toolbar) findViewById(R.id.nav_action));
DrawerLayout mDrawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
mToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.string.open, R.string.close);
mDrawerLayout.addDrawerListener(mToggle);
mToggle.syncState();
getSupportActionBar().setDisplayHomeAsUpEnabled(true); // Able to see the Navigation Burger "Button"
((NavigationView) findViewById(R.id.nv1)).setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.nav_stats:
startActivity(new Intent(QuizActivity.this, Menu2.class));
break;
case R.id.nav_about:
startActivity(new Intent(QuizActivity.this, Menu3.class));
break;
}
return true;
}
});
mScoreView = (TextView) findViewById(R.id.score_score);
mQuestionView = (TextView) findViewById(R.id.question);
mButtonChoice1 = (Button) findViewById(R.id.choice1);
mButtonChoice2 = (Button) findViewById(R.id.choice2);
mButtonChoice3 = (Button) findViewById(R.id.choice3);
final List<Button> choices = new ArrayList<>();
choices.add(mButtonChoice1);
choices.add(mButtonChoice2);
choices.add(mButtonChoice3);
updateQuestion();
//Code of the mediaplayer begins:
for (final Button choice : choices) {
choice.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (choice.getText().equals(mAnswer)) {
try {
mp = new MediaPlayer();
if (playSounds) {
mp.setVolume(1, 1);
} else {
mp.setVolume(0, 0);
}
mp.reset();
AssetFileDescriptor afd;
afd = getAssets().openFd("sample.mp3");
mp.setDataSource(afd.getFileDescriptor(),afd.getStartOffset(),afd.getLength());
mp.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
mp.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer unused) {
mp.release();
mp = null;
}
});
mp.start();
updateScore();
updateQuestion();
Toast.makeText(QuizActivity.this, "Correct", Toast.LENGTH_SHORT).show();
} else {
try {
mp2 = new MediaPlayer();
if (playSounds) {
mp2.setVolume(1, 1);
} else {
mp.setVolume(0, 0);
}
mp2.reset();
AssetFileDescriptor afd;
afd = getAssets().openFd("wrong.mp3");
mp2.setDataSource(afd.getFileDescriptor(),afd.getStartOffset(),afd.getLength());
mp2.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
mp2.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer unused) {
mp2.release();
mp2 = null;
}
});
mp2.start();
Toast.makeText(QuizActivity.this, "Wrong... Try again!", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(QuizActivity.this, Menu2.class);
intent.putExtra("score", mScore); // pass score to Menu2
startActivity(intent);
}
}
});
}
}
//End mediaplayer main code
private void updateQuestion() {
if (mQuestionNumber < mQuestionLibrary.getLength()) {
mQuestionView.setText(mQuestionLibrary.getQuestion(mQuestionNumber));
mButtonChoice1.setText(mQuestionLibrary.getChoice1(mQuestionNumber));
mButtonChoice2.setText(mQuestionLibrary.getChoice2(mQuestionNumber));
mButtonChoice3.setText(mQuestionLibrary.getChoice3(mQuestionNumber));
mAnswer = mQuestionLibrary.getCorrectAnswer(mQuestionNumber++);
} else {
Toast.makeText(QuizActivity.this, "Last Question! You are very intelligent!", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(QuizActivity.this, Menu2.class);
intent.putExtra("score", mScore);
startActivity(intent);
}
}
private void updateScore() {
mScoreView.setText(String.valueOf(++mScore));
SharedPreferences mypref = getPreferences(MODE_PRIVATE);
int highScore = mypref.getInt("highScore", 0);
if (mScore > highScore) {
SharedPreferences.Editor editor = mypref.edit();
editor.putInt("highScore", mScore);
editor.apply();
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
return mToggle.onOptionsItemSelected(item) || super.onOptionsItemSelected(item);
}
private void createDialog() {
dialog = new Dialog(this);
dialog.setTitle("Tutorial");
dialog.setContentView(R.layout.popup_menu1_1);
closeButton = (TextView) dialog.findViewById(R.id.closeTXT);
}
private void createDialog2() {
dialog2 = new Dialog(this);
dialog2.setTitle("Settings");
dialog2.setContentView(R.layout.popup_menu1_2);
closeButton2 = (TextView) dialog2.findViewById(R.id.closeTXT2);
checkBoxmp = (CheckBox) dialog2.findViewById(R.id.ckeckBox);
}
}
答案 0 :(得分:2)
您没有发布MediaPlayer
。这可能是这个问题背后的原因。没有触及大多数逻辑,一种方法是:
成为mp
的{{1}}和mp2
,private
成员。
QuizActivity
在需要时创建public class QuizActivity extends AppCompatActivity {
...
private MediaPlayer mp, mp2;
...
}
,并在播放完成后将其释放。
MediaPlayer
在其他地方,您需要执行mp = new MediaPlayer();
if (playSounds) {
mp.setVolume(1, 1);
} else {
mp.setVolume(0, 0);
}
AssetFileDescriptor afd;
...
mp.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer unused) {
mp.release();
mp = null;
}
});
mp.start();
检查,如下所示,然后才能访问null
和mp
以避免NPE。
mp2
其他方法是仅在创建媒体播放器后添加点击侦听器。
This链接为if (null != mp && null != mp2) {
if (!isChecked) {
mp.setVolume(1, 1);
mp2.setVolume(1, 1);
} else {
mp.setVolume(0, 0);
mp2.setVolume(0, 0);
}
}
发布提供了更多信息。
完整的来源如下所示。
MediaPlayer