我正在使用媒体播放器播放声音。当从第二个活动按下自定义工具栏图像时，音频服务不会停止。
public class ClassMain extends AppCompatActivity {
LinearLayout linearclass1;
Toolbar toolbar;
TextView customtexttoolbartitle;
MediaPlayer mediaPlayer;
Handler handler = new Handler();
final static int Delay = 1000;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_6_parts);
toolbar = (Toolbar) findViewById(R.id.custom_toolbar);
customtexttoolbartitle = (TextView) findViewById(R.id.custom_toolbar_title);
customtexttoolbartitle.setText("Select Your Grade");
playAudioWithDelay();
linearclass1 = (LinearLayout) findViewById(R.id.linear_class_1);
linearclass1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(ClassMain.this, ClassOneSubjectList.class);
startActivity(intent);
mediaPlayer.stop();
startService(v);
}
});
}
public void startService(View view) {
startService(new Intent(this, UseBackgroundSoundService.class));
}
public void playAudioWithDelay() {
handler.postDelayed(new Runnable() {
@Override
public void run() {
sound();
}
}, Delay);
}
void sound() {
mediaPlayer = new MediaPlayer();
mediaPlayer = MediaPlayer.create(this, R.raw.got);
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setLooping(false);
mediaPlayer.start();
mediaPlayer.setVolume(100, 100);
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
mediaPlayer.stop();
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
mediaPlayer.stop();
}
}
这是我的第二项活动
公共类ClassOneSubjectList扩展了AppCompatActivity {
Toolbar toolbar;
TextView customtexttoolbartitle;
ImageView customtoolbarimage;
private FeatureCoverFlow mCoverFlow;
private CoverFlowAdapter mAdapter;
private ArrayList<BookEntity> mData = new ArrayList<>(0);
private TextSwitcher mTitle;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_class_one_subject_list);
customtexttoolbartitle = (TextView) findViewById(R.id.custom_toolbar_title);
customtexttoolbartitle.setText("Select Subject");
customtoolbarimage = (ImageView) findViewById(R.id.custom_toolbar_image);
customtoolbarimage.setVisibility(View.VISIBLE);
toolbar = (Toolbar) findViewById(R.id.custom_toolbar);
customtoolbarimage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(ClassOneSubjectList.this, ClassMain.class);
startActivity(intent);
stopService(new Intent(ClassOneSubjectList.this, UseBackgroundSoundService.class));
}
});
mData.add(new BookEntity(R.mipmap.social, R.string.title1));
mData.add(new BookEntity(R.mipmap.maths, R.string.title2));
mData.add(new BookEntity(R.mipmap.science, R.string.title3));
mData.add(new BookEntity(R.mipmap.nepali, R.string.title4));
mTitle = (TextSwitcher) findViewById(R.id.title);
mTitle.setFactory(new ViewSwitcher.ViewFactory() {
@Override
public View makeView() {
LayoutInflater inflater = LayoutInflater.from(ClassOneSubjectList.this);
TextView textView = (TextView) inflater.inflate(R.layout.activity_item_subject_book_title, null);
return textView;
}
});
Animation in = AnimationUtils.loadAnimation(this, R.anim.slide_in_top);
Animation out = AnimationUtils.loadAnimation(this, R.anim.slide_out_bottom);
mTitle.setInAnimation(in);
mTitle.setOutAnimation(out);
mAdapter = new CoverFlowAdapter(this);
mAdapter.setData(mData);
mCoverFlow = (FeatureCoverFlow) findViewById(R.id.coverflow);
mCoverFlow.setAdapter(mAdapter);
mCoverFlow.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
switch (position) {
case 0:
Intent intent = new Intent();
startActivity(intent);
break;
case 1:
break;
case 2:
stopService(new Intent(ClassOneSubjectList.this, UseBackgroundSoundService.class));
Intent intent2 = new Intent(ClassOneSubjectList.this, ChooseExerciseSyllabus.class);
startActivity(intent2);
break;
}
}
});
mCoverFlow.setOnScrollPositionListener(new FeatureCoverFlow.OnScrollPositionListener() {
@Override
public void onScrolledToPosition(int position) {
mTitle.setText(getResources().getString(mData.get(position).titleResId));
}
@Override
public void onScrolling() {
mTitle.setText("");
}
});
}
@Override
public boolean stopService(Intent name) {
return super.stopService(name);
}
@Override
public void onBackPressed() {
super.onBackPressed();
stopService(new Intent(ClassOneSubjectList.this, UseBackgroundSoundService.class));
}
}
我的后台服务活动
public class UseBackgroundSoundService extends Service {
private static final String Tag = null;
MediaPlayer player;
Handler handler = new Handler();
final static int Delay = 1000;
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onCreate() {
player = MediaPlayer.create(this, R.raw.got);
player.setAudioStreamType(AudioManager.STREAM_MUSIC);
player.setLooping(false);
player.setVolume(100, 100);
playAudioWithDelaysound();
}
@Override
public void onDestroy() {
player.stop();
player.release();
}
public void playAudioWithDelaysound() {
handler.postDelayed(new Runnable() {
@Override
public void run() {
Intent intent = new Intent(UseBackgroundSoundService.this, UseBackgroundSoundService.class);
startService(intent);
player.start();
}
}, Delay);
}
}
服务正在停止反击，但它没有停止从第二个活动的CustomToolbar Image（Back）意图到First Activity？请帮助