Android GPS定期位置

Question

我想创建一个应用程序，该应用在上午9:00至9:00 pm之间每5分钟获取用户的位置。现在我无法思考流程。我在上感到困惑：

1. 我应该实现2个重复警报管理器，一个每5分钟，另一个用于时间插槽。？
2. 或以某种方式进行一次，每5分钟发射警报，然后检查它是否在时间插槽之间，然后仅运行位置服务并上传到服务器工作。？

请帮助我提供建议/建议。如何在手机电池，效率方面以最佳方法实现这一目标。

Answer 1

您不应使用handler.postdelayer((时间间隔，超过30秒，因为它可能导致内存泄漏。与AlarmManager(较长的间隔(制定了几个策略 - 一种短时间间隔 - 使用处理程序和另一种策略。

Answer 2

请参阅https://codelabs.developers.google.com/codelabs/background-location-location-pocation-updates-and-htroid-o/index.html?index=../../../index＃0

您可以将更新间隔设置为位置请求中的5分钟。它与Android" O"兼容。

Answer 3

在这里我创建了一个服务，该服务以1分钟的间隔提供当前位置。您可以根据您的要求对其进行修改 -

还将其添加到Gradle文件 -

中

compile 'com.google.android.gms:play-services:9.4.0'

locationservice.class

import android.Manifest;
import android.app.Service;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Location;
import android.os.Bundle;
import android.os.IBinder;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.util.Log;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import java.text.SimpleDateFormat;
import java.util.Date;
public class LocationService extends Service implements GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener, LocationListener, ActivityCompat.OnRequestPermissionsResultCallback {
    protected static final String TAG = "location-updates";
    private static final long day = 24 * 60 * 60 * 1000;
    private static final long hours = 60 * 60 * 1000;
    private static final long minute = 60 * 1000;
    private static final long fiveSec = 5 * 1000;
    private GoogleApiClient mGoogleApiClient;
    private LocationRequest mLocationRequest;
    @Override
    public void onCreate() {
        super.onCreate();
        mGoogleApiClient = new GoogleApiClient.Builder(getApplicationContext())
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
        mLocationRequest = new LocationRequest();
        mLocationRequest.setInterval(minute);
        mLocationRequest.setFastestInterval(5000);
        mLocationRequest.setSmallestDisplacement(0);
        mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
        if (mGoogleApiClient != null) {
            mGoogleApiClient.connect();
        }
    }

    @Override
    public void onConnected(Bundle bundle) {
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            return;
        }
        LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
    }

    @Override
    public void onConnectionSuspended(int i) {
        mGoogleApiClient.connect();
    }
    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
    }
    //Location Listener
    @Override
    public void onLocationChanged(final Location location) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd_HHmmss");
        String currentDateandTime = sdf.format(new Date());
        Log.e("Location ", location.getLatitude() + " " + location.getLongitude() + " " + currentDateandTime);
    }
    @Override
    public void onDestroy() {
        super.onDestroy();
    }
    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        super.onStartCommand(intent, flags, startId);
        return START_STICKY;
    }

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
        boolean isGranted = false;
        for (int i = 0; i < grantResults.length; i++)
            if (permissions[i].equals(Manifest.permission.ACCESS_FINE_LOCATION) && (grantResults[i] == PackageManager.PERMISSION_GRANTED))
                isGranted = true;
        if (isGranted) {
            startService(new Intent(this, LocationService.class));
        } else {
        }
    }
}

Answer 4

好吧，您可以使用处理程序查询位置，您可以执行此类操作

 Handler handler = new Handler();
 Runnable runnable = new Runnable() {
        public void run() {
            currentLocation = getCurrentUserLocation();
            handler.postDelayed(this, 1000*60*5);
        }
    }
 };
 handler.postDelayed(runnable, 1000*60*5);

并且要检查时间间隔，您可以为此任务设置警报管理器

，一旦达到时间限制，您需要通过

删除处理程序回调

handleLocation.removeCallbacksAndMessages(null);