android notification 無法發出聲音解決辦法

android notification 無法發出聲音解決辦法

android小白，在學習第一行代碼的時候發現程序無法發出通知，摸索了半天，查了很多資料，解決方法如下：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel("normal", "Normal", NotificationManager.IMPORTANCE_DEFAULT);
            AudioAttributes audioAttributes = new AudioAttributes.Builder()
                    .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
                    .setUsage(AudioAttributes.USAGE_NOTIFICATION)
                    .build();

            channel.setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION), audioAttributes);
            manager.createNotificationChannel(channel);
        }

Intent intent = new Intent(this, NotificationActivity.class);
        PendingIntent pi = PendingIntent.getActivity(this, 0 ,intent, 0);

        Button sendNotice = (Button) findViewById(R.id.send_notice);
        sendNotice.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Notification notification = new NotificationCompat.Builder(MainActivity.this, "normal")
                        .setContentTitle("This is content title")
                        .setContentText("This is content text")
                        .setSmallIcon(R.mipmap.ic_launcher)
                        .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher))
                        .setContentIntent(pi)
//                        .setAutoCancel(true)
//                        .setDefaults(Notification.DEFAULT_SOUND)
//                        .setSound(Uri.fromFile(new File("/system/media/audio/ringtones/Luna.ogg")))
//                        .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
                        .build();
                manager.notify(1, notification);
            }
        });

 

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