如何检查使用广播接收机的GPS跟踪半小时一次？ [英] How to check the gps Tracking half hour once using Broadcast Receiver?
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问题描述
海想获得使用广播Receiver.its做工精细的GPS定位，但我想，每半小时once.i使用** MINIMUM_TIME_BETWEEN_UPDATES时，纬度和经度值改为** 30mts。我拿到的位置
更新
公共类MainActivity扩展活动实现LocationListener的{
最后DBAdapter1 DB =新DBAdapter1（本）;
私人ConnectivityReceiver接收器= NULL;
私人TextView的txtNetworkInfo;
私有静态的TextView latituteField;
私有静态的TextView longitudeField;
私人的LocationManager的LocationManager;
SoapSerializationEnvelope信封=新SoapSerializationEnvelope（SoapEnvelope.VER11）;
私有静态最后弦乐HostUrl =HTTP：//xxx/Service.svc
//私有静态最后弦乐HostUrl =HTTP：//yyyService.svc
私有静态最后弦乐NAMESPACE =http://tempuri.org/;
私人HttpTransportSE httpTransport =新HttpTransportSE（HostUrl）;
私人字符串供应商;
私人SoapObject请求= NULL;
私有静态最后长MINIMUM_DISTANCE_CHANGE_FOR_UPDATES = 1; //在米
私有静态最后长MINIMUM_TIME_BETWEEN_UPDATES = 1800000; //（毫秒）@覆盖
公共无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.main）;
latituteField =（的TextView）findViewById（R.id.TextView02）;
longitudeField =（的TextView）findViewById（R.id.TextView04）;
的LocationManager =（的LocationManager）getSystemService（Context.LOCATION_SERVICE）;
//定义标准如何选择locatioin提供商 - ＆GT;使用
//默认
标准标准=新标准（）;
Log.i（ConnTest，locationManager.toString（））;
供应商= locationManager.getBestProvider（标准，FALSE）;
地点= locationManager.getLastKnownLocation（供应商）;//初始化位置字段
如果（位置！= NULL）{
的System.out.println（提供者+提供商+已被选择。）;
浮动纬度=（浮点）（location.getLatitude（））;
浮动液化天然气=（浮点）（location.getLongitude（））;
latituteField.setText（将String.valueOf（LAT））;
longitudeField.setText（将String.valueOf（LNG））;}其他{
latituteField.setText（提供者不可用）;
longitudeField.setText（提供者不可用）;
} txtNetworkInfo =（的TextView）findViewById（R.id.txtNetworkInfo）; 接收器=新ConnectivityReceiver（）; registerReceiver（接收器，新的IntentFilter（ConnectivityManager.CONNECTIVITY_ACTION））;
}
@覆盖
保护无效onResume（）{
super.onResume（）;
//locationManager.requestLocationUpdates(provider,1000，1，本）;
locationManager.requestLocationUpdates（
供应商，
MINIMUM_TIME_BETWEEN_UPDATES，
MINIMUM_DISTANCE_CHANGE_FOR_UPDATES，
这个
）;
}/ *删除LocationListener的更新时，活动暂停* /
@覆盖
保护无效的onPause（）{
super.onPause（）;
locationManager.removeUpdates（本）;
}@覆盖
公共无效onLocationChanged（地点）{
// TODO自动生成方法存根
浮动纬度=（浮点）（location.getLatitude（））;
浮动液化天然气=（浮点）（location.getLongitude（））;
longitudeField.setText（将String.valueOf（LNG））;
latituteField.setText（将String.valueOf（LAT））;}@覆盖
公共无效onProviderDisabled（字符串提供商）{
// TODO自动生成方法存根}@覆盖
公共无效onProviderEnabled（字符串提供商）{
// TODO自动生成方法存根
Toast.makeText（这一点，已启用新的供应商+供应商，
Toast.LENGTH_SHORT）.show（）;}@覆盖
公共无效onStatusChanged（字符串提供商，INT地位，捆绑演员）{
// TODO自动生成方法存根
Toast.makeText（这一点，没有开启提供商+供应商，
Toast.LENGTH_SHORT）.show（）;}
保护无效显示（光标C）{
Toast.makeText（这一点，ROWID：+ c.getString（0）+\\ n+
纬度：+ c.getString（1）+\\ n+经度：+ c.getString（2）+\\ n+
Toast.LENGTH_LONG，0）.show（）;
}@覆盖
保护无效的onDestroy（）{
unregisterReceiver（接收机）; super.onDestroy（）;
}私人字符串getNetworkStateString（NetworkInfo.State状态）{
字符串stateString =未知; 开关（州）
{
案有关：stateString =已连接;打破;
案件正在连接：stateString =正在连接;打破;
案例DISCONNECTED：stateString =断开连接;打破;
案例DISCONNECTING：stateString =断开;打破;
案例暂停：stateString =暂停;打破;
默认：stateString =未知;打破;
} 返回stateString;
} 私有类ConnectivityReceiver扩展广播接收器{ 私人定时器mTimer;
私人的TimerTask mTimerTask; @覆盖
公共无效的onReceive（上下文的背景下，意图意图）{
的NetworkInfo信息= intent.getParcelableExtra（ConnectivityManager.EXTRA_NETWORK_INFO）; 如果（NULL！=资讯）
{
字符串状态= getNetworkStateString（info.getState（））;
如果（state.equals（已连接））{
尝试{
mTimer =新的Timer（）;
mTimer.scheduleAtFixedRate（mTimerTask，1000,1800000）;
mTimerTask =新的TimerTask（）{ @覆盖
公共无效的run（）{
SoapPrimitive响应=无效;
最后弦乐方法名=InsertAllGPSInformation;
请求=新SoapObject空间（namespace，方法名）;
envelope.dotNet = TRUE;
request.addProperty（经度，longitudeField.getText（）的toString（））;
request.addProperty（纵横，latituteField.getText（）的toString（））;
request.addProperty（日期，NEWTIME）; envelope.setOutputSoapObject（请求）;
字符串结果= NULL;
尝试
{
httpTransport.call空间（namespace +IService /+方法名，信封）;
响应=（SoapPrimitive）envelope.getResponse（）;
结果= response.toString（）;
}
赶上（例外五）
{
Toast.makeText（getBaseContext（），你的净连接或未登录网+，Toast.LENGTH_LONG）.show（）;
Log.e（上传图片错误：e.getMessage（））;
}
}
};
}
赶上（例外五）
{
Toast.makeText（getBaseContext（），e.getMessage（）+，Toast.LENGTH_LONG）.show（）;
Log.e（上传图片错误：e.getMessage（））;
}
解决方案
我想问题是为什么会比每30分钟一次的更新？
那么答案将是：对于通知的最小时间间隔，以毫秒为单位该字段仅作为提示，以节省电源，位置更新之间的实际时间可能比这个值更大或更小。
请参见 http://developer.android.com/reference/android/location/LocationManager。 HTML
另外，您可以使用一个处理程序或触发警报每30'，并要求一个位置更新报警触发时。与API 9开始有一个requestSingleUpdate（）。
Hai am trying to get the gps location using BroadCast Receiver.its working fine,But i want to get the location every half hour once.i used **MINIMUM_TIME_BETWEEN_UPDATES ** 30mts .i got when latitude and longitude value changed
update
public class MainActivity extends Activity implements LocationListener {
final DBAdapter1 db=new DBAdapter1(this);
private ConnectivityReceiver receiver = null;
private TextView txtNetworkInfo ;
private static TextView latituteField;
private static TextView longitudeField;
private LocationManager locationManager;
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
private static final String HostUrl =" http://xxx/Service.svc";
// private static final String HostUrl =" http://yyyService.svc";
private static final String NAMESPACE = "http://tempuri.org/";
private HttpTransportSE httpTransport = new HttpTransportSE(HostUrl);
private String provider;
private SoapObject request=null;
private static final long MINIMUM_DISTANCE_CHANGE_FOR_UPDATES = 1; // in Meters
private static final long MINIMUM_TIME_BETWEEN_UPDATES = 1800000; // in Milliseconds
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
latituteField = (TextView) findViewById(R.id.TextView02);
longitudeField = (TextView) findViewById(R.id.TextView04);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
// Define the criteria how to select the locatioin provider -> use
// default
Criteria criteria = new Criteria();
Log.i("ConnTest",locationManager.toString());
provider = locationManager.getBestProvider(criteria, false);
Location location = locationManager.getLastKnownLocation(provider);
// Initialize the location fields
if (location != null) {
System.out.println("Provider " + provider + " has been selected.");
float lat = (float) (location.getLatitude());
float lng = (float) (location.getLongitude());
latituteField.setText(String.valueOf(lat));
longitudeField.setText(String.valueOf(lng));
} else {
latituteField.setText("provider not available");
longitudeField.setText("provider not available");
}
txtNetworkInfo = (TextView)findViewById(R.id.txtNetworkInfo);
receiver = new ConnectivityReceiver();
registerReceiver(receiver,new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION));
}
@Override
protected void onResume() {
super.onResume();
//locationManager.requestLocationUpdates(provider,1000, 1, this);
locationManager.requestLocationUpdates(
provider,
MINIMUM_TIME_BETWEEN_UPDATES,
MINIMUM_DISTANCE_CHANGE_FOR_UPDATES,
this
);
}
/* Remove the locationlistener updates when Activity is paused */
@Override
protected void onPause() {
super.onPause();
locationManager.removeUpdates(this);
}
@Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
float lat = (float) (location.getLatitude());
float lng = (float) (location.getLongitude());
longitudeField.setText(String.valueOf(lng));
latituteField.setText(String.valueOf(lat));
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
Toast.makeText(this, "Enabled new provider " + provider,
Toast.LENGTH_SHORT).show();
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
Toast.makeText(this, "Disenabled provider " + provider,
Toast.LENGTH_SHORT).show();
}
protected void Display(Cursor c) {
Toast.makeText(this, "rowid: " + c.getString(0) + "\n" +
"Latitude: " + c.getString(1) + "\n" + "Longitude: " + c.getString(2) + "\n" +
Toast.LENGTH_LONG, 0).show();
}
@Override
protected void onDestroy() {
unregisterReceiver(receiver);
super.onDestroy();
}
private String getNetworkStateString(NetworkInfo.State state){
String stateString = "Unknown";
switch(state)
{
case CONNECTED: stateString = "Connected"; break;
case CONNECTING: stateString = "Connecting"; break;
case DISCONNECTED: stateString = "Disconnected"; break;
case DISCONNECTING: stateString = "Disconnecting"; break;
case SUSPENDED: stateString = "Suspended"; break;
default: stateString = "Unknown"; break;
}
return stateString;
}
private class ConnectivityReceiver extends BroadcastReceiver{
private Timer mTimer;
private TimerTask mTimerTask;
@Override
public void onReceive(Context context, Intent intent) {
NetworkInfo info = intent.getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_INFO);
if(null != info)
{
String state = getNetworkStateString(info.getState());
if(state.equals("Connected")){
try{
mTimer = new Timer();
mTimer.scheduleAtFixedRate(mTimerTask,1000,1800000);
mTimerTask = new TimerTask() {
@Override
public void run() {
SoapPrimitive response=null;
final String methodname="InsertAllGPSInformation";
request = new SoapObject(NAMESPACE,methodname);
envelope.dotNet = true;
request.addProperty("Longitude",longitudeField.getText().toString());
request.addProperty("Latitude",latituteField.getText().toString());
request.addProperty("Date",newtime);
envelope.setOutputSoapObject(request);
String result = null;
try
{
httpTransport.call(NAMESPACE+"IService/"+methodname, envelope);
response = ( SoapPrimitive )envelope.getResponse();
result=response.toString();
}
catch(Exception e)
{
Toast.makeText(getBaseContext(), "Your Net Connected or Not Login to Net"+"", Toast.LENGTH_LONG).show();
Log.e("Upload Picture Error:",e.getMessage());
}
}
};
}
catch(Exception e)
{
Toast.makeText(getBaseContext(),e.getMessage()+"", Toast.LENGTH_LONG).show();
Log.e("Upload Picture Error:",e.getMessage());
}
解决方案
I guess the question is "why do I get more updates than once every 30 minutes?":
Then the answer would be: "the minimum time interval for notifications, in milliseconds. This field is only used as a hint to conserve power, and actual time between location updates may be greater or lesser than this value.". See http://developer.android.com/reference/android/location/LocationManager.html
Alternatively you could use a Handler or trigger an alarm every 30' and request a single location update when the alarm fires. Starting with API 9 there is a requestSingleUpdate().
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