我正在开发一个应用程序,通过短信在固定的时间后发送用户位置,如果手机重新启动应用程序应该在没有任何启动器活动的背景下自动启动。我已经安静地完成了我的任务,我只能面对获取位置的问题,因为gps需要一些时间,并且应用程序在找不到任何位置时会崩溃。 这里是我的主要活动当gps位置可用时自动发送短信
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
startLocationTracking();
}
private void startLocationTracking()
{
AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);
Intent alarmintent1 = new Intent(MainActivity.this, AlarmReceiver.class);
PendingIntent sender1=PendingIntent.getBroadcast(MainActivity.this, 100, alarmintent1, PendingIntent.FLAG_UPDATE_CURRENT | Intent.FILL_IN_DATA);
try {
am.cancel(sender1);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.out.println("exjfkd"+e);
}
Calendar cal = Calendar.getInstance();
cal.add(Calendar.MINUTE,10);
am.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), 1000*600, sender1);
System.out.println("set timer");
}
}
public class AlarmReceiver extends BroadcastReceiver{
long time = 600* 1000;
long distance = 10;
@SuppressLint("NewApi")
@Override
public void onReceive(final Context context, Intent intent) {
System.out.println("alarm receiver....");
Intent service = new Intent(context, MyService.class);
context.startService(service);
//Start App On Boot Start Up
if ("android.intent.action.BOOT_COMPLETED".equals(intent.getAction())) {
Intent App = new Intent(context, MainActivity.class);
App.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(App);
}
try{
LocationManager locationManager = (LocationManager)context
.getSystemService(Context.LOCATION_SERVICE);
Criteria criteria = new Criteria();
String provider = locationManager.getBestProvider(criteria, true);
locationManager.requestLocationUpdates(provider, time,
distance, locationListener);
Location location = locationManager.getLastKnownLocation(provider);
TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
String device_id = tm.getDeviceId(); // returns IMEI number
String phoneNo = "+923362243969";
String Text = "Latitude = " + location.getLatitude() +" Longitude = " + location.getLongitude() + " Device Id: " + device_id;
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(phoneNo, null, Text, null, null);
Log.i("Send SMS", "");
}
catch (Exception e) {
e.printStackTrace();
}
this.abortBroadcast();
}
LocationListener locationListener = new LocationListener() {
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onLocationChanged(Location location) {
}
};
}
的代码我在逻辑我想我的应用程序发送短信有点搞不清当GPS坐标可用时。如果手机上的gps处于禁用状态,那么如果网络在手机上可用,它应该通过网络获取位置并通过网络发送。
你可以在if()语句中描述一些行。 – user3584316 2014-10-17 07:43:30
检查编辑以获取更多详细信息 – 2014-10-17 07:57:15