我正在使用位置监听器开发一个示例应用程序。我有2个java文件，一个是广播接收器，一个是活动。我的广播接收器本身就是一个位置监听器。在我的广播接收器中，我正在启动gps引擎以及停止位置更新。我的要求是每天晚上7点停止位置更新。我正在尝试使用这段代码删除位置更新。
locationManager.removeUpdates(this);
但它不起作用。我哪里错了。以下是我的完整代码。
StopLLActivity.java
public class StopLLActivity extends Activity {
public static LocationManager lm;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Intent myIntent = new Intent( this, PIBroadCast.class);
PendingIntent currentTime = PendingIntent.getBroadcast(this, 0, myIntent, 0);
AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), currentTime);
PendingIntent sevenPMIntent = PendingIntent.getBroadcast(this, 0, myIntent, 0);
AlarmManager alarmManager1 = (AlarmManager)getSystemService(ALARM_SERVICE);
Calendar calendar1 = Calendar.getInstance();
calendar1.setTimeInMillis(System.currentTimeMillis());
calendar1.set(Calendar.HOUR_OF_DAY, 19);
calendar1.set(Calendar.MINUTE, 0);
calendar1.set(Calendar.SECOND, 0);
alarmManager1.setRepeating(AlarmManager.RTC_WAKEUP, calendar1.getTimeInMillis(), 24*60*60*1000, sevenPMIntent);
}
PIBroadCast.java
public class PIBroadCast extends BroadcastReceiver implements LocationListener{
public static LocationManager locationManager;
public static boolean flagForGPS = false;
@Override
public void onReceive(Context context, Intent intent) {
locationManager = (LocationManager)context.getSystemService(Context.LOCATION_SERVICE);
if(flagForGPS == false){
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 10*1000 , 0 ,this);
flagForGPS = true;
}
//Get the system current time.
Date dt = new Date();
int hours = dt.getHours();
//Compare the current time with 7PM and 5AM
if(hours == 19){
try {
//if current time is 7PM
Toast.makeText(context, "Now the time is 7PM", Toast.LENGTH_LONG).show();
locationManager.removeUpdates(this);
} catch (Exception e) {
e.printStackTrace();
}
}
}
@Override
public void onLocationChanged(Location location) {
System.out.println("LOCATION IS : "+location);
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
}