如何让物体的位置,每10分钟的android [英] how to get Location object every 10 minutes in android
问题描述
请别人给我一个code可以恢复GPS位置,或每n分钟,我测试了几个code,但没有任何结果。
请别人给我一个教程或一个小程序,我真的卡住
公共final类TrackListener实现LocationListener的{
私人最终语境mContext;
公共布尔isGPSEnabled = FALSE;
布尔isNetworkEnabled = FALSE;
公共布尔canGetLocation = FALSE;
地点位置; // 位置
双纬度; // 纬度
双经度; // 经度
//最小距离改变以米为单位更新
私有静态最后长MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; //10米
//毫秒更新之间的最短时间
私有静态最后长MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1分钟
//声明一个位置管理
保护LocationManager locationManager;
公共TrackListener(上下文的背景下){
this.mContext =背景;
的getLocation();
}
公共场所的getLocation(){
尝试 {
locationManager =(LocationManager)mContext
.getSystemService(Contexts.LOCATION_SERVICE);
isGPSEnabled = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
Log.v(isGPSEnabled,=+ isGPSEnabled);
isNetworkEnabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
Log.v(isNetworkEnabled,=+ isNetworkEnabled);
如果(isGPSEnabled ==假放;&安培; isNetworkEnabled == FALSE){
} 其他 {
this.canGetLocation = TRUE;
如果(isNetworkEnabled){
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES,这一点);
Log.d(网络,网络);
如果(locationManager!= NULL){
位置= locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
如果(位置!= NULL){
纬度= location.getLatitude();
经度= location.getLongitude();
}
}
}
如果(isGPSEnabled){
如果(位置== NULL){
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES,这一点);
Log.d(GPS功能的,GPS功能的);
如果(locationManager!= NULL){
位置= locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
如果(位置!= NULL){
纬度= location.getLatitude();
经度= location.getLongitude();
}
}
}
}
}
}赶上(例外五){
e.printStackTrace();
}
返回的位置;
}
公共无效stopUsingGPS(){
如果(locationManager!= NULL){
locationManager.removeUpdates(TrackListener.this);
}
}
公共双getLatitude(){
如果(位置!= NULL){
纬度= location.getLatitude();
}
返回纬度;
}
公共双getLongitude(){
如果(位置!= NULL){
经度= location.getLongitude();
}
返回经度;
}
公共布尔canGetLocation(){
返回this.canGetLocation;
}
公共无效showSettingsAlert(){
AlertDialog.Builder alertDialog =新AlertDialog.Builder(mContext);
alertDialog.setTitle(全球定位系统设置);
alertDialog
.setMessage(GPS未启用你想进入设置菜单。?);
alertDialog.setPositiveButton(设置,
新DialogInterface.OnClickListener(){
公共无效的onClick(DialogInterface对话,诠释它){
意向意图=新的意图(
ACTION_LOCATION_SOURCE_SETTINGS);
mContext.startActivity(意向);
}
});
alertDialog.setNegativeButton(取消,
新DialogInterface.OnClickListener(){
公共无效的onClick(DialogInterface对话,诠释它){
dialog.cancel();
}
});
alertDialog.show();
}
公共无效onLocationChanged(位置定位){
如果(位置!= NULL){
纬度= location.getLatitude();
经度= location.getLongitude();
}
}
@覆盖
公共无效onProviderDisabled(字符串提供商){
Toast.makeText(Contexts.getAppContext(),GPS禁用,
Toast.LENGTH_LONG).show();
}
@覆盖
公共无效onProviderEnabled(字符串提供商){
Toast.makeText(Contexts.getAppContext(),GPS功能的,
Toast.LENGTH_LONG).show();
}
@覆盖
公共无效onStatusChanged(字符串商,INT地位,捆绑演员){
}
但在课堂活动叫的getLocation()当我发现一个致命的问题
8月4日至28号:41:55.126:W / dalvikvm(16004):主题ID = 1:螺纹退出与未捕获的异常(组= 0x40015560)
八月四号至28日:41:55.186:E / AndroidRuntime(16004):致命异常:主要
八月四号至28日:41:55.186:E / AndroidRuntime(16004):java.lang.RuntimeException的:无法启动的活动ComponentInfo {com.example.testss / com.example.testss.MainActivity}:显示java.lang.NullPointerException
八月四号至28日:41:55.186:E / AndroidRuntime(16004):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
八月四号至28日:41:55.186:E / AndroidRuntime(16004):在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
八月四号至28日:41:55.186:E / AndroidRuntime(16004):在android.app.ActivityThread.access $ 1500(ActivityThread.java:117)
八月四号至28日:41:55.186:E / AndroidRuntime(16004):在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:931)
八月四号至28日:41:55.186:E / AndroidRuntime(16004):在android.os.Handler.dispatchMessage(Handler.java:99)
八月四号至28日:41:55.186:E / AndroidRuntime(16004):在android.os.Looper.loop(Looper.java:123)
八月四号至28日:41:55.186:E / AndroidRuntime(16004):在android.app.ActivityThread.main(ActivityThread.java:3683)
八月四号至28日:41:55.186:E / AndroidRuntime(16004):在java.lang.reflect.Method.invokeNative(本机方法)
八月四号至28日:41:55.186:E / AndroidRuntime(16004):在java.lang.reflect.Method.invoke(Method.java:507)
八月四号至28日:41:55.186:E / AndroidRuntime(16004):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:839)
八月四号至28日:41:55.186:E / AndroidRuntime(16004):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
八月四号至28日:41:55.186:E / AndroidRuntime(16004):在dalvik.system.NativeStart.main(本机方法)
八月四号至28日:41:55.186:E / AndroidRuntime(16004):由:显示java.lang.NullPointerException
八月四号至28日:41:55.186:E / AndroidRuntime(16004):在com.example.testss.MainActivity.onCreate(MainActivity.java:27)
八月四号至28日:41:55.186:E / AndroidRuntime(16004):在android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
八月四号至28日:41:55.186:E / AndroidRuntime(16004):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
八月四号至28日:41:55.186:E / AndroidRuntime(16004):11 ...更多
八月四号至28日:46:55.255:I /流程(16004):发送信号。 PID:16004 SIG:9
这可以回答两部分。
- <一个href="http://stackoverflow.com/questions/16128091/setting-up-alarm-manager-is-creating-2-instances-of-my-main-activity/16134932#16134932">calling后台服务,每10分钟,使用报警
- 使用LocationManager和LocationListener的,之间进行选择(或两者)网络和全球定位系统提供商。如果选择的网络供应商,因为GPS提供商需要一个地狱很长的时间去连接和我不需要GPS的精度。网络服务提供者是准确的高达250毫秒(我得到了在5个小时1不好的样品)。请记住LocationListener的,不会对三星手机的工作(因为三星手机已经高度定制构建Android的,他们不做移植的全面工作)。
或
- 在我使用了一个的力量让我现在的位置还挺叫
God.locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER)
在除报警code以上,把下面的code在onHandleIntent
@覆盖
最后的保护无效onHandleIntent(意向意图){
mainContext = getApplicationContext();
地点myLocation;
如果(God.locationManager == NULL)
God.locationManager =(LocationManager)getSystemService(LOCATION_SERVICE);
myLocation = God.locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
如果(myLocation!= NULL)
onLocationChanged(myLocation);
其他 {
God.notifications.setSpeedNotification();
}
}
请注意:你可以选择LocationManager.GPS_PROVIDER,只是准备在露天进行测试(无云)约5分钟用4-5颗卫星同步
please someone give me a code can recover the GPS position or every n minutes, I tested several code but no result
Please someone give me a tutorial or a small program for that, I'm really stuck
public final class TrackListener implements LocationListener {
private final Context mContext;
public boolean isGPSEnabled = false;
boolean isNetworkEnabled = false;
public boolean canGetLocation = false;
Location location; // location
double latitude; // latitude
double longitude; // longitude
// The minimum distance to change Updates in meters
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters
// The minimum time between updates in milliseconds
private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute
// Declaring a Location Manager
protected LocationManager locationManager;
public TrackListener(Context context) {
this.mContext = context;
getLocation();
}
public Location getLocation() {
try {
locationManager = (LocationManager) mContext
.getSystemService(Contexts.LOCATION_SERVICE);
isGPSEnabled = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
Log.v("isGPSEnabled", "=" + isGPSEnabled);
isNetworkEnabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
Log.v("isNetworkEnabled", "=" + isNetworkEnabled);
if (isGPSEnabled == false && isNetworkEnabled == false) {
} else {
this.canGetLocation = true;
if (isNetworkEnabled) {
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("Network", "Network");
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
if (isGPSEnabled) {
if (location == null) {
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("GPS Enabled", "GPS Enabled");
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return location;
}
public void stopUsingGPS() {
if (locationManager != null) {
locationManager.removeUpdates(TrackListener.this);
}
}
public double getLatitude() {
if (location != null) {
latitude = location.getLatitude();
}
return latitude;
}
public double getLongitude() {
if (location != null) {
longitude = location.getLongitude();
}
return longitude;
}
public boolean canGetLocation() {
return this.canGetLocation;
}
public void showSettingsAlert() {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
alertDialog.setTitle("GPS is settings");
alertDialog
.setMessage("GPS is not enabled. Do you want to go to settings menu?");
alertDialog.setPositiveButton("Settings",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(
"ACTION_LOCATION_SOURCE_SETTINGS");
mContext.startActivity(intent);
}
});
alertDialog.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
alertDialog.show();
}
public void onLocationChanged(Location location) {
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
@Override
public void onProviderDisabled(String provider) {
Toast.makeText(Contexts.getAppContext(), "GPS Disable ",
Toast.LENGTH_LONG).show();
}
@Override
public void onProviderEnabled(String provider) {
Toast.makeText(Contexts.getAppContext(), "GPS enabled",
Toast.LENGTH_LONG).show();
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
but when calling "getLocation()" in the class activity I find a fatal problem
04-28 08:41:55.126: W/dalvikvm(16004): threadid=1: thread exiting with uncaught exception (group=0x40015560)
04-28 08:41:55.186: E/AndroidRuntime(16004): FATAL EXCEPTION: main
04-28 08:41:55.186: E/AndroidRuntime(16004): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.testss/com.example.testss.MainActivity}: java.lang.NullPointerException
04-28 08:41:55.186: E/AndroidRuntime(16004): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
04-28 08:41:55.186: E/AndroidRuntime(16004): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
04-28 08:41:55.186: E/AndroidRuntime(16004): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
04-28 08:41:55.186: E/AndroidRuntime(16004): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
04-28 08:41:55.186: E/AndroidRuntime(16004): at android.os.Handler.dispatchMessage(Handler.java:99)
04-28 08:41:55.186: E/AndroidRuntime(16004): at android.os.Looper.loop(Looper.java:123)
04-28 08:41:55.186: E/AndroidRuntime(16004): at android.app.ActivityThread.main(ActivityThread.java:3683)
04-28 08:41:55.186: E/AndroidRuntime(16004): at java.lang.reflect.Method.invokeNative(Native Method)
04-28 08:41:55.186: E/AndroidRuntime(16004): at java.lang.reflect.Method.invoke(Method.java:507)
04-28 08:41:55.186: E/AndroidRuntime(16004): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
04-28 08:41:55.186: E/AndroidRuntime(16004): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
04-28 08:41:55.186: E/AndroidRuntime(16004): at dalvik.system.NativeStart.main(Native Method)
04-28 08:41:55.186: E/AndroidRuntime(16004): Caused by: java.lang.NullPointerException
04-28 08:41:55.186: E/AndroidRuntime(16004): at com.example.testss.MainActivity.onCreate(MainActivity.java:27)
04-28 08:41:55.186: E/AndroidRuntime(16004): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-28 08:41:55.186: E/AndroidRuntime(16004): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
04-28 08:41:55.186: E/AndroidRuntime(16004): ... 11 more
04-28 08:46:55.255: I/Process(16004): Sending signal. PID: 16004 SIG: 9
This can be answered in 2 parts.
- calling a background service every 10 mins, using alarm
- Using a LocationManager and LocationListener, choosing between (or both) network and gps provider. If chose network provider, since gps provider takes a hell a long time to connect and I dont need the accuracy of gps. Network provider is accurate upto 250ms (i got 1 bad sample in 5 hours). Keep in mind LocationListener, does not work on Samsung phones (since samsung phones have heavily customized build of Android, and they dont do a thorough job of porting).
OR
- I used a force get my location now kinda call
God.locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER)
In addition to the alarm code above, put the following code in the onHandleIntent
@Override
final protected void onHandleIntent(Intent intent) {
mainContext = getApplicationContext() ;
Location myLocation;
if (God.locationManager == null)
God.locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
myLocation = God.locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (myLocation != null)
onLocationChanged(myLocation);
else {
God.notifications.setSpeedNotification();
}
}
Note : You can choose LocationManager.GPS_PROVIDER, just be ready to test it under open sky (no clouds) and about 5 mins to sync with 4-5 satellites.
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