android8.0以降のバイブを実装したserviceでバイブが止まってしまう

アラーム機能を実装したアプリを作っています
そのアプリでserviceを使っているのですがバックキーやホームキーなどを押してアプリがバックグラウンドに回る、もしくは別のバイブを起動するとserviceのバイブが停止してしまいます
android8.0より前の実装は想定通りに動いたのですが、8.0以降だと意図しない動作となってしまいます
サービスが生きている限りはバイブし続けさせるにはどのように実装すればよいでしょうか？
よろしくお願いいたします

以下がコードになります

MainActivity.Java

java
1import android.content.Intent;
2import android.os.VibrationEffect;
3import android.os.Vibrator;
4import android.support.v7.app.AppCompatActivity;
5import android.os.Bundle;
6import android.view.View;
7import android.widget.Button;
8
9
10public class MainActivity extends AppCompatActivity  {
11
12
13    @Override
14    protected void onCreate(Bundle savedInstanceState) {
15        super.onCreate(savedInstanceState);
16        setContentView(R.layout.activity_main);
17
18
19        Button start=findViewById(R.id.button);
20        start.setOnClickListener(new View.OnClickListener() {
21            @Override
22            public void onClick(View view) {
23                Intent intent2 = new Intent(getApplication(), AlarmService.class);
24                startService(intent2);
25            }
26        });
27
28        Button stop=findViewById(R.id.button2);
29        stop.setOnClickListener(new View.OnClickListener() {
30            @Override
31            public void onClick(View view) {
32                Intent intent = new Intent(getApplication(), AlarmService.class);
33                stopService(intent);
34            }
35        });
36
37
38
39        Button vib=findViewById(R.id.button3);
40        vib.setOnClickListener(new View.OnClickListener() {
41            @Override
42            public void onClick(View view) {
43                long pattern[] = {1000, 1000 };
44                Vibrator vib = (Vibrator)getSystemService(VIBRATOR_SERVICE);
45                if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
46                    int[] anp={0, VibrationEffect.DEFAULT_AMPLITUDE};
47                    VibrationEffect vibrationEffect=VibrationEffect.createWaveform(pattern,anp,-1);
48                    if (vib != null) {
49                        vib.vibrate(vibrationEffect);
50                    }
51                }else {
52                    if(vib!=null){
53                        vib.vibrate(pattern,0);
54                    }
55                }
56            }
57        });
58
59    }
60}

AlarmService.Java

java
1import android.app.Notification;
2import android.app.NotificationChannel;
3import android.app.NotificationManager;
4import android.app.PendingIntent;
5import android.app.Service;
6import android.content.Context;
7import android.content.Intent;
8import android.graphics.Color;
9import android.os.IBinder;
10import android.os.VibrationEffect;
11import android.os.Vibrator;
12import android.support.annotation.Nullable;
13import android.support.v4.app.NotificationCompat;
14import android.support.v4.app.NotificationManagerCompat;
15
16public class AlarmService extends Service {
17
18    private Vibrator vib;
19    @Override
20    public int onStartCommand(Intent intent, int flags, int startId) {
21        long pattern[] = {1000, 1000 };
22        Intent intent1 = new Intent(this,MainActivity.class);
23        intent1.addCategory(Intent.CATEGORY_LAUNCHER);
24        intent1.setClassName(this.getPackageName(), MainActivity.class.getName());
25        intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK| Intent.FLAG_ACTIVITY_CLEAR_TASK);
26        PendingIntent pendingIntent =
27                PendingIntent.getActivity(this,0, intent1, PendingIntent.FLAG_UPDATE_CURRENT);
28
29        String channelId = "default";
30        String text="サービスが起動しています";
31
32        vib = (Vibrator)getSystemService(VIBRATOR_SERVICE);
33        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
34            int[] anp={0,VibrationEffect.DEFAULT_AMPLITUDE};
35            VibrationEffect vibrationEffect=VibrationEffect.createWaveform(pattern,anp,0);
36            NotificationManager notificationManager;
37
38            notificationManager = (NotificationManager)this.getSystemService(Context.NOTIFICATION_SERVICE);
39            NotificationChannel channel =new NotificationChannel(
40                    channelId, getString(R.string.app_name), NotificationManager.IMPORTANCE_DEFAULT);
41            channel.setSound(null,null);
42            channel.setDescription(text);
43            channel.enableLights(true);
44            channel.setLightColor(Color.BLUE);
45            channel.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);
46            channel.setShowBadge(true);
47
48            if (notificationManager != null) {
49                notificationManager.createNotificationChannel(channel);
50
51                Notification notification = new Notification.Builder(this, channelId)
52                        .setContentTitle(getString(R.string.app_name))
53                        .setSmallIcon(R.mipmap.ic_launcher)
54                        .setContentText(text)
55                        .setAutoCancel(false)
56                        .setContentIntent(pendingIntent)
57                        .setTicker(text)
58                        .setWhen(System.currentTimeMillis())
59                        .build();
60                notification.flags = Notification.FLAG_ONGOING_EVENT;
61
62
63                startForeground(1, notification);
64            }
65            if (vib != null) {
66                vib.vibrate(vibrationEffect);
67            }
68        }else {
69                NotificationCompat.Builder builder = new NotificationCompat.Builder(getApplicationContext());
70                builder.setSmallIcon(R.mipmap.ic_launcher);
71
72                builder.setContentTitle(getString(R.string.app_name));
73                builder.setContentText(text);
74                builder.setPriority(2);
75                builder.setContentIntent(pendingIntent);
76                builder.setWhen(System.currentTimeMillis());
77
78                builder.setAutoCancel(true);
79                builder.setTicker(text);
80                NotificationManagerCompat manager;
81                manager = NotificationManagerCompat.from(getApplicationContext());
82                Notification notification=builder.build();
83                notification.flags=Notification.FLAG_ONGOING_EVENT;
84                manager.notify(getString(R.string.app_name),1, notification);
85
86                if(vib!=null){
87                    vib.vibrate(pattern,0);
88                }
89
90
91
92        }
93        return START_NOT_STICKY;
94
95    }
96
97    @Override
98    public void onDestroy() {
99        super.onDestroy();
100
101        NotificationManager notificationManager;
102        NotificationManagerCompat manager;
103        notificationManager = (NotificationManager)this.getSystemService(Context.NOTIFICATION_SERVICE);
104        manager = NotificationManagerCompat.from(getApplicationContext());
105        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
106            if (notificationManager != null) {
107                notificationManager.cancel(R.string.app_name);
108            }
109        }else {
110            manager.cancel(getString(R.string.app_name),1);
111        }
112
113        vib.cancel();
114        vib=null;
115
116    }
117
118
119
120
121
122    @Nullable
123    @Override
124    public IBinder onBind(Intent intent) {
125        return null;
126    }
127}

activity_main.xml

xml
1<?xml version="1.0" encoding="utf-8"?>
2<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
3    xmlns:app="http://schemas.android.com/apk/res-auto"
4    xmlns:tools="http://schemas.android.com/tools"
5    android:layout_width="match_parent"
6    android:layout_height="match_parent"
7    tools:context=".MainActivity">
8
9    <ScrollView
10        android:layout_width="match_parent"
11        android:layout_height="match_parent"
12        android:layout_above="@+id/button"
13        android:layout_below="@+id/button">
14
15        <LinearLayout
16            android:layout_width="match_parent"
17            android:layout_height="wrap_content"
18            android:orientation="vertical" />
19    </ScrollView>
20
21    <TextView
22        android:id="@+id/text"
23        android:layout_width="match_parent"
24        android:layout_height="match_parent"
25        app:layout_constraintBottom_toBottomOf="parent"
26        app:layout_constraintLeft_toLeftOf="parent"
27        app:layout_constraintRight_toRightOf="parent"
28        app:layout_constraintTop_toTopOf="parent" />
29
30    <Button
31        android:id="@+id/button"
32        android:layout_width="wrap_content"
33        android:layout_height="wrap_content"
34        android:layout_alignParentBottom="false"
35        android:text="start" />
36
37    <Button
38        android:id="@+id/button2"
39        android:layout_width="wrap_content"
40        android:layout_height="wrap_content"
41        android:layout_below="@+id/button"
42        android:layout_alignParentRight="false"
43        android:layout_alignParentBottom="false"
44        android:text="stop" />
45
46    <Button
47        android:id="@+id/button3"
48        android:layout_width="wrap_content"
49        android:layout_height="wrap_content"
50        android:layout_below="@+id/button2"
51        android:text="VIB" />
52
53</RelativeLayout>

回答1件

自己解決

もっと良い方法があるかもしれませんが、一応解決致しました。
サービスでhandlerを使い単発バイブを回す、といった感じです

AlarmService.java

java
1import android.app.Notification;
2import android.app.NotificationChannel;
3import android.app.NotificationManager;
4import android.app.PendingIntent;
5import android.app.Service;
6import android.content.Context;
7import android.content.Intent;
8import android.graphics.Color;
9import android.media.AudioAttributes;
10import android.os.Handler;
11import android.os.IBinder;
12import android.os.VibrationEffect;
13import android.os.Vibrator;
14import android.support.annotation.Nullable;
15import android.support.v4.app.NotificationCompat;
16import android.support.v4.app.NotificationManagerCompat;
17
18public class AlarmService extends Service {
19    private Handler handler = new Handler();
20    private Runnable runnable = new Runnable() {
21        @Override
22        public void run() {
23            vibOn();
24            handler.postDelayed(this, 2000);
25        }
26    };
27    private Vibrator vib;
28    private long pattern[] = {1000, 1000 };
29    private VibrationEffect vibrationEffect;
30    @Override
31    public int onStartCommand(Intent intent, int flags, int startId) {
32
33        Intent intent1 = new Intent(this,MainActivity.class);
34        intent1.addCategory(Intent.CATEGORY_LAUNCHER);
35        intent1.setClassName(this.getPackageName(), MainActivity.class.getName());
36        intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK| Intent.FLAG_ACTIVITY_CLEAR_TASK);
37        PendingIntent pendingIntent =
38                PendingIntent.getActivity(this,0, intent1, PendingIntent.FLAG_UPDATE_CURRENT);
39
40        String channelId = "default";
41        String text="サービスが起動しています";
42
43        vib = (Vibrator)getSystemService(VIBRATOR_SERVICE);
44        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
45            int[] anp={0,VibrationEffect.DEFAULT_AMPLITUDE};
46            vibrationEffect=VibrationEffect.createWaveform(pattern,anp,-1);
47            NotificationManager notificationManager;
48
49            notificationManager = (NotificationManager)this.getSystemService(Context.NOTIFICATION_SERVICE);
50            NotificationChannel channel =new NotificationChannel(
51                    channelId, getString(R.string.app_name), NotificationManager.IMPORTANCE_DEFAULT);
52            channel.setSound(null,null);
53            channel.setDescription(text);
54            channel.enableLights(true);
55            channel.setLightColor(Color.BLUE);
56            channel.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);
57            channel.setShowBadge(true);
58
59            if (notificationManager != null) {
60                notificationManager.createNotificationChannel(channel);
61
62                Notification notification = new Notification.Builder(this, channelId)
63                        .setContentTitle(getString(R.string.app_name))
64                        .setSmallIcon(R.mipmap.ic_launcher)
65                        .setContentText(text)
66                        .setAutoCancel(false)
67                        .setContentIntent(pendingIntent)
68                        .setTicker(text)
69                        .setWhen(System.currentTimeMillis())
70                        .build();
71                notification.flags = Notification.FLAG_ONGOING_EVENT;
72
73
74                startForeground(1, notification);
75            }
76
77
78        }else {
79                NotificationCompat.Builder builder = new NotificationCompat.Builder(getApplicationContext());
80                builder.setSmallIcon(R.mipmap.ic_launcher);
81
82                builder.setContentTitle(getString(R.string.app_name));
83                builder.setContentText(text);
84                builder.setPriority(2);
85                builder.setContentIntent(pendingIntent);
86                builder.setWhen(System.currentTimeMillis());
87
88                builder.setAutoCancel(true);
89                builder.setTicker(text);
90                NotificationManagerCompat manager;
91                manager = NotificationManagerCompat.from(getApplicationContext());
92                Notification notification=builder.build();
93                notification.flags=Notification.FLAG_ONGOING_EVENT;
94                manager.notify(getString(R.string.app_name),1, notification);
95
96        }
97
98        handler.post(runnable);
99
100        return START_NOT_STICKY;
101
102    }
103
104    private void vibOn(){
105        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O){
106            if (vib != null) {
107                vib.vibrate(vibrationEffect);
108            }
109        }else {
110            if(vib!=null){
111                vib.vibrate(pattern,0);
112            }
113
114        }
115    }
116
117    @Override
118    public void onDestroy() {
119        super.onDestroy();
120
121        NotificationManager notificationManager;
122        NotificationManagerCompat manager;
123        notificationManager = (NotificationManager)this.getSystemService(Context.NOTIFICATION_SERVICE);
124        manager = NotificationManagerCompat.from(getApplicationContext());
125        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
126            if (notificationManager != null) {
127                notificationManager.cancel(R.string.app_name);
128            }
129        }else {
130            manager.cancel(getString(R.string.app_name),1);
131        }
132
133        vib.cancel();
134        vib=null;
135
136    }
137
138
139
140
141
142    @Nullable
143    @Override
144    public IBinder onBind(Intent intent) {
145        return null;
146    }
147}