如何将App背景上的GPS位置更新为前景? [英] How to update GPS Location on App Background to Foreground?
本文介绍了如何将App背景上的GPS位置更新为前景?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我将GPS_PROVIDER或NETWORK_SERVICE_PROVIDER用于纬度和经度.我想检测具体何时App会从后台变为前台(按Home按钮).
I am using GPS either GPS_PROVIDER or NETWORK_SERVICE_PROVIDER for latitude and longitude . I want to detect when specifically App goes background to foreground (Either By Home button) .
问题:
- GPS检测到的位置不会不时更新,直到有任何应用程序使用它,这样才能获取更新的位置.
- 将背景检测到应用程序的前景并检测位置,而不会出现电池问题.
- 任何GPS位置都会不时更新,而不会出现电池问题.
推荐答案
要在后台获取位置,请经常在android服务类中使用FusedLocation提供程序.
For get location in background frequently use FusedLocation provider in a android service class.
融合的位置提供了更准确的位置,并消耗了更少的电量.
Fused location provide give more accurate location and consume less power.
public class LocationService extends Service implements GoogleApiClient.ConnectionCallbacks,GoogleApiClient.OnConnectionFailedListener,LocationListener{
private static final String TAG = "LocationService";
private static final int LOCATION_INTERVAL = 1000;
private Context mContext;
private LocationRequest locationRequest;
private GoogleApiClient googleApiClient;
private FusedLocationProviderApi fusedLocationProviderApi;
@Override
public IBinder onBind(Intent arg0){
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId){
Log.e(TAG, "onStartCommand");
super.onStartCommand(intent, flags, startId);
return START_STICKY;
}
@Override
public void onCreate(){
Log.e(TAG, "onCreate");
mContext = this;
getLocation();
}
@Override
public void onDestroy(){
Log.e(TAG, "onDestroy");
super.onDestroy();
try{
if(googleApiClient!=null){
googleApiClient.disconnect();
}
}
catch(Exception e){
e.printStackTrace();
}
}
private void getLocation(){
locationRequest = LocationRequest.create();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(LOCATION_INTERVAL);
locationRequest.setFastestInterval(LOCATION_INTERVAL);
fusedLocationProviderApi = LocationServices.FusedLocationApi;
googleApiClient = new GoogleApiClient.Builder(this)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
if (googleApiClient != null) {
googleApiClient.connect();
}
}
@Override
public void onConnected(Bundle arg0) {
// Location location = fusedLocationProviderApi.getLastLocation(googleApiClient);
fusedLocationProviderApi.requestLocationUpdates(googleApiClient, locationRequest, this);
}
@Override
public void onConnectionSuspended(int arg0) {
}
@Override
public void onResponse(int reqCode, int statusCode, String json) {
}
@Override
public void onCancel(boolean canceled) {
}
@Override
public void onProgressChange(int progress) {
}
@Override
public void onLocationChanged(Location location) {
Toast.makeText(mContext, "Driver location :"+location.getLatitude()+" , "+location.getLongitude(), Toast.LENGTH_SHORT).show();
}
@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 onConnectionFailed(ConnectionResult arg0) {
}
}
并通过您的活动致电服务-
and call service from your activity-
startService(new Intent(mContext,LocationService.class));
希望它会对您有所帮助.
hope it will help you.
已编辑
还要在清单中添加以下代码-
Also add below code to your manifest -
<service
android:name=".LocationService">
</service>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
这篇关于如何将App背景上的GPS位置更新为前景?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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