--------- UPDATE ------------------------------------- ----
当应用程序启动时，我会在以下行收到numberformat异常：
final long thetime=Long.parseLong(time_value);
但以上不属于主要活动...
在edittex中的xml文件中
android：inputType =“number”。
这行是在myservice类中我有警报管理器（注意我不能使用catch因为下面（alarm.setRepeating）它不能识别“thetime”值。
protected void onHandleIntent(Intent intent) {
//try{
String time_value;
time_value=(String) intent.getStringExtra("time_value");
final long thetime=Long.parseLong(time_value);// }
// catch (NumberFormatException e) {
//}
mContext = getApplicationContext();
mHandler.post(new Runnable(){
@Override
public void run() {
// Start service using AlarmManager
Calendar cal = Calendar.getInstance();
cal.add(Calendar.SECOND, 10);
Intent intent = new Intent(myservice.this,selection.class);
PendingIntent pintent = PendingIntent.getService(myservice.this, 0, intent,
0);
AlarmManager alarm = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
alarm.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(),
thetime*1000, pintent);
// Tell the user about what we did.
Toast.makeText(myservice.this, "Configured time interval",
Toast.LENGTH_LONG).show();
}
});
}
}
我从另一个活动加载time_value：
public void onClick(View v) {
switch (v.getId()){
case R.id.btn:
edit11=edit1.getText().toString();
edit22=edit2.getText().toString();
Intent i=new Intent(this,selection.class);
i.putExtra("code_value",edit11);
Intent k=new Intent(this,myservice.class);
k.putExtra("time_value",edit22);
this.startService(k);
Intent l=new Intent(this,MainActivity.class);
startActivity(l);
break;
}
}
答案 0 :(得分：0)
because I made lonfitude and latitude Strings (I had them as double before). How can I overcome that?
要从双重使用String.valueOf();
String latitude = String.valueOf(location.getLatitude());
重复
Also,how can I select to send the data in time intervals that the user will define?
要以特定间隔重复使用AlarmManager。
答案 1 :(得分：0)
how can I select to send the data in time intervals that the user will define
您可以使用Timer和TimerTask。取用户输入的时间间隔并将其传递给Timer的schedule()。应该考虑的事情是当app关闭或用户更改时间间隔然后取消之前的TimerTask并清除Timer（如果有的话）。
对于“警报”，请在活动类中执行以下操作：
PendingIntent Sender = null;
Intent AlarmIntent = new Intent("com.example.gpstrackdemo.RECEIVEALARM");
AlarmManager AlmMgr = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Sender = PendingIntent.getBroadcast(GpsTrackActivity.this, 0,
AlarmIntent, PendingIntent.FLAG_UPDATE_CURRENT);
AlmMgr.setRepeating(AlarmManager.RTC_WAKEUP, 0, 15 * 60 * 1000,
Sender);
AlarmIntent是BroadcastReceiver的意图。这是它的代码：
public class StartServiceReceiver extends BroadcastReceiver
{
private static final String TAG = "StartServiceReceiver";
@Override
public void onReceive(Context context, Intent intent)
{
Intent serviceIntent = new Intent(context, MyLocationService.class);
context.startService(serviceIntent);
Log.v(TAG, "onReceive called");
}
}
收到广播后，它将启动位置服务，我们将获取用户的当前位置。
服务类：
public class MyLocationService extends Service implements
OnLocationReceivedListener {
private LocationManager manager;
private Location location = null;
PowerManager powerManager;
private WakeLock wakeLock;
private String country;
GPSLocationListener mGPSLocationListener;
NetworkLocationListener mNetworkLocationListener;
private static final int MAX_ATTEMPTS = 250;
private static String TAG = "MyLocationService";
LocTimerTask mTimerTask;
int mSattelites;
Timer myLocTimer;
int count = 0;
boolean isGPS;
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.v(TAG, "onStartCommand called");
getCurrentLocation();
return START_STICKY;
}
@Override
public void onCreate() {
Log.v(TAG, "onCreate called");
powerManager = (PowerManager) getSystemService(Context.POWER_SERVICE);
wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
"mywakelock");
mGPSLocationListener = new GPSLocationListener();
mNetworkLocationListener = new NetworkLocationListener();
wakeLock.acquire();
super.onCreate();
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
public void getCurrentLocation() {
manager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
manager.addGpsStatusListener(mGPSStatusListener);
mTimerTask = new LocTimerTask(LocationManager.GPS_PROVIDER);
if (manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
Log.v(TAG, "GPS ENABLED");
manager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000L,
50.0f, mGPSLocationListener);
}
if(manager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {
manager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000L,
50.0f, mNetworkLocationListener);
}
myLocTimer = new Timer("LocationRunner", true);
myLocTimer.schedule(mTimerTask, 0, 500);
}
public class GPSLocationListener implements LocationListener {
@Override
public void onLocationChanged(Location argLocation) {
location = argLocation;
}
public void onProviderDisabled(String provider) {
}
public void onProviderEnabled(String provider) {
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
}
public class NetworkLocationListener implements LocationListener {
@Override
public void onLocationChanged(Location argLocation) {
location = argLocation;
}
public void onProviderDisabled(String provider) {
}
public void onProviderEnabled(String provider) {
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
}
class LocTimerTask extends TimerTask {
String provider;
public LocTimerTask(String provider) {
this.provider = provider;
}
final Handler mHandler = new Handler(Looper.getMainLooper());
Runnable r = new Runnable() {
@Override
public void run() {
count++;
Log.v(TAG, "Timer Task run" + i);
location = manager.getLastKnownLocation(provider);
if (location != null) {
Log.v(TAG, "in timer task run in if location not null");
onLocationReceived(location);
myLocTimer.cancel();
myLocTimer.purge();
mTimerTask.cancel();
return;
} else {
isGPS = false;
if (location == null && count == MAX_ATTEMPTS) {
turnGPSOff();
location = manager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
onLocationReceived(location);
myLocTimer.cancel();
myLocTimer.purge();
mTimerTask.cancel();
return;
}
} else {
return;
}
}
count = 0;
}
};
public void run() {
mHandler.post(r);
}
}
private GpsStatus.Listener mGPSStatusListener = new GpsStatus.Listener() {
@Override
public synchronized void onGpsStatusChanged(int event) {
switch (event) {
case GpsStatus.GPS_EVENT_SATELLITE_STATUS:
GpsStatus status = manager.getGpsStatus(null);
mSattelites = 0;
Iterable<GpsSatellite> list = status.getSatellites();
for (GpsSatellite satellite : list) {
if (satellite.usedInFix()) {
mSattelites++;
}
}
break;
case GpsStatus.GPS_EVENT_FIRST_FIX:
break;
case GpsStatus.GPS_EVENT_STARTED:
break;
case GpsStatus.GPS_EVENT_STOPPED:
break;
default:
break;
}
}
};
public void onDestroy() {
super.onDestroy();
if (myLocTimer != null) {
myLocTimer.cancel();
myLocTimer.purge(); //Timer not required any more
}
if (mTimerTask != null) {
if (mTimerTask.r != null) {
mTimerTask.mHandler.removeCallbacks(mTimerTask.r);
}
}
if (manager != null) {
if (mGPSLocationListener != null) {
manager.removeUpdates(mGPSLocationListener);
}
//remove location updates for listener once your work is done, otherwise it will drain battery
if (mNetworkLocationListener != null) {
manager.removeUpdates(mNetworkLocationListener);
}
if (mGPSStatusListener != null) {
manager.removeGpsStatusListener(mGPSStatusListener);
}
}
}
@Override
public void onLocationReceived(Location mLoc) {
//Send data to http server once you get location.
}
}
这里我的服务类实现了一个监听器，它有一个回调方法onLocationReceived，你可以在找到位置后做你的东西。
public interface OnLocationReceivedListener {
public void onLocationReceived(Location mLoc);
}
在你的清单中，分别声明广播接收者和服务：
<receiver
android:name=".receiver.StartServiceReceiver"
android:enabled="true"
android:exported="false" >
<intent-filter>
<action android:name="com.example.gpstrackdemo.RECEIVEALARM" />
</intent-filter>
</receiver>
<service android:name=".service.MyLocationService"
android:enabled="true"></service>
答案 2 :(得分：0)
好的，我忘记了：
startService（）即我的主要活动。 我不得不把它放在我的服务活动中。
感谢所有