我正在执行倒数计时，但是活动中发生错误，活动一次又一次自动打开，一次又一次，当倒数变为00 00 00时，我想做一次，然后设置了一个应调用的alaram
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
txtDay = (TextView) findViewById(R.id.txtDay);
txtHour = (TextView) findViewById(R.id.txtHour);
txtMinute = (TextView) findViewById(R.id.txtMinute);
txtSecond = (TextView) findViewById(R.id.txtSecond);
tvEventStart = (TextView) findViewById(R.id.tveventStart);
backgroundLayout = (RelativeLayout) findViewById(R.id.activity_main);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
timer = new Timer();
try {
checkEventisGone();
} catch (ParseException e) {
e.printStackTrace();
}
if (!check) {
countDownStart();
makeAlarm(eventDateforAlram);
} else {
startCelebration();
textViewGone();
}
doBindService();
changeAlphaofImg();
}
private void checkEventisGone() throws ParseException {
SimpleDateFormat dateFormat = new SimpleDateFormat(
"yyyyMMddHHmmss");
// Please here set your event date//YYYY-MM-DD
Date futureDate = dateFormat.parse(eventDate);
Date currentDate = new Date();
if (currentDate.after(futureDate)) {
check = true;
} else {
check = false;
}
}
private void changebgImageAutomitacally() {
timer.scheduleAtFixedRate(new TimerTask() {
@Override
public void run() {
runOnUiThread(new Runnable() // run on ui thread
{
public void run() {
if (series) {
if (counter < images.length) {
counter++;
changingBackgoundimage(images[counter]);
} else if (counter == images.length) {
series = false;
} else {
counter = 0;
}
} else {
if (counter < images.length) {
counter = new Random().nextInt(images.length);
changingBackgoundimage(images[counter]);
} else {
counter = 0;
}
}
}
});
}
}, 3000, 3000);
}
private void changeAlphaofImg() {
backgroundLayout.setAlpha(backgroundLayout.getAlpha() - 0.1f);
}
private void changingBackgoundimage(int id) {
backgroundLayout.setBackgroundResource(id);
}
private void startCelebration() {
Intent music = new Intent();
music.setClass(getApplicationContext(), MusicService.class);
startService(music);
changebgImageAutomitacally();
}
private void makeAlarm(String eventDate) {
AlarmManager objAlarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Calendar objCalendar = Calendar.getInstance();
String[] arr = eventDate.split("/");
objCalendar.set(Calendar.YEAR, 2019);
objCalendar.set(Calendar.MONTH, 6);
objCalendar.set(Calendar.DAY_OF_MONTH, 5);
objCalendar.set(Calendar.HOUR_OF_DAY, 10);
objCalendar.set(Calendar.MINUTE, 0);
objCalendar.set(Calendar.SECOND, 0);
objCalendar.set(Calendar.MILLISECOND, 0);
objCalendar.set(Calendar.AM_PM, Calendar.AM);
Intent alamShowIntent = new Intent(this, MainActivity.class);
PendingIntent alarmPendingIntent = PendingIntent.getActivity(this, 0, alamShowIntent, 0);
objAlarmManager.set(AlarmManager.RTC_WAKEUP, objCalendar.getTimeInMillis(), alarmPendingIntent);
}
public void countDownStart() {
handler = new Handler();
runnable = new Runnable() {
@Override
public void run() {
handler.postDelayed(this, 1000);
try {
SimpleDateFormat dateFormat = new SimpleDateFormat(
"yyyyMMddHHmmss");
// Please here set your event date//YYYY-MM-DD
Date futureDate = dateFormat.parse(eventDate);
Date currentDate = new Date();
if (!check) {
if (!currentDate.after(futureDate)) {
long diff = futureDate.getTime()
- currentDate.getTime();
long days = diff / (24 * 60 * 60 * 1000);
diff -= days * (24 * 60 * 60 * 1000);
long hours = diff / (60 * 60 * 1000);
diff -= hours * (60 * 60 * 1000);
long minutes = diff / (60 * 1000);
diff -= minutes * (60 * 1000);
long seconds = diff / 1000;
txtDay.setText("" + String.format("%02d", days));
txtHour.setText("" + String.format("%02d", hours));
txtMinute.setText(""
+ String.format("%02d", minutes));
txtSecond.setText(""
+ String.format("%02d", seconds));
} else {
tvEventStart.setVisibility(View.GONE);
tvEventStart.setText("The event started!");
textViewGone();
check = true;
startCelebration();
}
} else {
//
}
} catch (Exception e) {
e.printStackTrace();
}
}
};
handler.postDelayed(runnable, 1 * 1000);
}
public void textViewGone() {
findViewById(R.id.LinearLayout1).setVisibility(View.GONE);
findViewById(R.id.LinearLayout2).setVisibility(View.GONE);
findViewById(R.id.LinearLayout3).setVisibility(View.GONE);
findViewById(R.id.LinearLayout4).setVisibility(View.GONE);
findViewById(R.id.textViewheader1).setVisibility(View.GONE);
findViewById(R.id.textViewheader2).setVisibility(View.GONE);
}
private ServiceConnection Scon = new ServiceConnection() {
public void onServiceConnected(ComponentName name, IBinder
binder) {
mServ = ((MusicService.ServiceBinder) binder).getService();
}
public void onServiceDisconnected(ComponentName name) {
mServ = null;
doUnbindService();
}
};
void doBindService() {
bindService(new Intent(this, MusicService.class),
Scon, Context.BIND_AUTO_CREATE);
mIsBound = true;
}
void doUnbindService() {
if (mIsBound) {
unbindService(Scon);
mIsBound = false;
}
}
@Override
protected void onDestroy() {
super.onDestroy();
doUnbindService();
}
请给我建议，这样我可以做得更好，我使用一项在后台播放音乐的服务
答案 0 :(得分：0)
您好，您的问题是startCelebration();在可运行内部调用
public void countDownStart() {
handler = new Handler();
runnable = new Runnable() {
@Override
public void run() {
handler.postDelayed(this, 1000);
try {
SimpleDateFormat dateFormat = new SimpleDateFormat(
"yyyyMMddHHmmss");
// Please here set your event date//YYYY-MM-DD
Date futureDate = dateFormat.parse(eventDate);
Date currentDate = new Date();
if (!check) {
if (!currentDate.after(futureDate)) {
long diff = futureDate.getTime()
- currentDate.getTime();
long days = diff / (24 * 60 * 60 * 1000);
diff -= days * (24 * 60 * 60 * 1000);
long hours = diff / (60 * 60 * 1000);
diff -= hours * (60 * 60 * 1000);
long minutes = diff / (60 * 1000);
diff -= minutes * (60 * 1000);
long seconds = diff / 1000;
txtDay.setText("" + String.format("%02d", days));
txtHour.setText("" + String.format("%02d", hours));
txtMinute.setText(""
+ String.format("%02d", minutes));
txtSecond.setText(""
+ String.format("%02d", seconds));
} else {
tvEventStart.setVisibility(View.GONE);
tvEventStart.setText("The event started!");
textViewGone();
check = true;
startCelebration();<*********** check logic passing this
}
} else {
//
}
} catch (Exception e) {
e.printStackTrace();
}
}
};
handler.postDelayed(runnable, 1 * 1000);
}