Android 6.0でGeofencingをしてみた

Android 6.0とかパーミッションまわりがめんどくさいんですね…。ということで自分用メモです。

まず、permissionを設定します。AndoridManifest.xmlに以下の定義を追加。

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

追加するのはmanifestタグの直下ですね。

gms使うっぽいので、build.gradle(Module: app)に依存関係を追加します。

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:24.1.1'
    compile 'com.google.android.gms:play-services:9.4.0'
}

一番最後の依存関係ですね。

今回はサービスで色々ごにょごにょやりたかったので、GeofenceTransitionsIntentServiceという名前でサービスを1つ作りました。こんな感じで。

package com.example.kazuki.myapplication;

import android.*;
import android.app.IntentService;
import android.app.PendingIntent;
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.support.v4.content.ContextCompat;
import android.util.Log;

import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.Geofence;
import com.google.android.gms.location.GeofencingEvent;
import com.google.android.gms.location.GeofencingRequest;
import com.google.android.gms.location.LocationServices;

import java.util.LinkedList;
import java.util.List;

public class GeofenceTransitionsIntentService extends Service implements GoogleApiClient.ConnectionCallbacks{
    private List<Geofence> geofences = new LinkedList<>();
    private GoogleApiClient client;

    @Override
    public void onCreate() {
        super.onCreate();
        client = new GoogleApiClient.Builder(this)
                .addApi(LocationServices.API)
                .addConnectionCallbacks(this)
                .build();
        client.connect();
        Log.d("Sample", "onCreate");
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        client.disconnect();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            return super.onStartCommand(intent, flags, startId);
        }
        Location lastLocation = LocationServices.FusedLocationApi.getLastLocation(this.client);
        if (lastLocation == null) {
            Log.d("Sample", "lastLocation is null");
        } else {
            float[] distances = new float[3];
            Location.distanceBetween(34.38511, 132.4539817, lastLocation.getLatitude(), lastLocation.getLongitude(), distances);
            Log.d("Sample", "lastLocation: " + lastLocation.getLatitude() + ", " + lastLocation.getLongitude() + ", " + distances[0] + "m");
        }
        GeofencingEvent e = GeofencingEvent.fromIntent(intent);
        if (e == null || e.getTriggeringLocation() == null) {
            Log.d("Sample", "GeofencingEvent#getTriggeringLocation is null");
            return super.onStartCommand(intent, flags, startId);
        }

        String reason = "";
        if (e.getGeofenceTransition() == Geofence.GEOFENCE_TRANSITION_ENTER) {
            reason = "ENTER";
        } else if (e.getGeofenceTransition() == Geofence.GEOFENCE_TRANSITION_EXIT) {
            reason = "EXIT";
        } else if (e.getGeofenceTransition() == Geofence.GEOFENCE_TRANSITION_DWELL) {
            reason = "DWELL";
        }
        Log.d("Sample", reason + ": " + e.getTriggeringLocation().getLatitude() + ", " + e.getTriggeringLocation().getLongitude());
        return super.onStartCommand(intent, flags, startId);
    }

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

    @Override
    public void onConnected(@Nullable Bundle bundle) {
        this.setupGeofence();
    }

    private void setupGeofence() {
        if (!this.geofences.isEmpty()) {
            return;
        }
        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            return;
        }
        Log.d("Sample", "setupGeofence");
        this.geofences.add(
                new Geofence.Builder()
                        .setRequestId("home")
                        .setCircularRegion(
                                34.38511,
                                132.4539817,
                                1000
                        )
                        .setExpirationDuration(Geofence.NEVER_EXPIRE)
                        .setTransitionTypes(Geofence.GEOFENCE_TRANSITION_ENTER | Geofence.GEOFENCE_TRANSITION_EXIT)
                        .build()
        );

        GeofencingRequest req = new GeofencingRequest.Builder()
                .setInitialTrigger(GeofencingRequest.INITIAL_TRIGGER_ENTER | GeofencingRequest.INITIAL_TRIGGER_EXIT | GeofencingRequest.INITIAL_TRIGGER_DWELL)
                .addGeofences(this.geofences)
                .build();

        Intent intent = new Intent(this, GeofenceTransitionsIntentService.class);
        PendingIntent pendingIntent = PendingIntent.getService(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
        LocationServices.GeofencingApi.addGeofences(
                this.client,
                req,
                pendingIntent
        );

    }

    @Override
    public void onConnectionSuspended(int i) {

    }
}

色々ごにょごにょやってますが、パーミッションのチェックがOKならgeofenceを追加しています。座標は広島市役所に半径1㎞（1000m）のジオフェンスを作ってます。GeofenceingRequestとPendingIntentを作ってaddGeofencesをしています。

最後にMainActivityです。ここでパーミッションOKしてもらったら、先ほど作ったサービスを起動しています。

package com.example.kazuki.myapplication;

import android.Manifest;
import android.app.PendingIntent;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;

import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.Geofence;
import com.google.android.gms.location.GeofencingRequest;
import com.google.android.gms.location.LocationServices;

import java.util.LinkedList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    @Override
    public void onStart() {
        super.onStart();
        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.ACCESS_FINE_LOCATION}, 0);
            return;
        }
        this.startService(new Intent(this, GeofenceTransitionsIntentService.class));
    }

    public void onClick(View v) {
        this.startService(new Intent(this, GeofenceTransitionsIntentService.class));
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        if (requestCode == 0) {
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                this.startService(new Intent(this, GeofenceTransitionsIntentService.class));
            }
        }
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    }
}