自定义通知声音在Android Oreo中不起作用

要在Oreo中为通知设置声音,必须打开声音 NotificationChannel 而不是在 Notification Builder 它本身你可以这样做

Uri sound = Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + context.getPackageName() + "/" + R.raw.notification_mp3);

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

        NotificationChannel mChannel = new NotificationChannel("YOUR_CHANNEL_ID",
            "YOUR CHANNEL NAME",
            NotificationManager.IMPORTANCE_DEFAULT)

        AudioAttributes attributes = new AudioAttributes.Builder()
                .setUsage(AudioAttributes.USAGE_NOTIFICATION)
                .build();

        NotificationChannel mChannel = new NotificationChannel(CHANNEL_ID, 
                context.getString(R.string.app_name),
                NotificationManager.IMPORTANCE_HIGH);

        // Configure the notification channel.
        mChannel.setDescription(msg);
        mChannel.enableLights(true);
        mChannel.enableVibration(true);
        mChannel.setSound(sound, attributes); // This is IMPORTANT


        if (mNotificationManager != null)
            mNotificationManager.createNotificationChannel(mChannel);
    }

这将为您的通知设置自定义声音。但如果应用程序正在更新,且之前使用过通知频道,则不会更新。i、 e.你需要创建一个不同的频道,并设置声音使其工作。但这将在应用程序的应用程序信息的通知部分显示多个频道。如果你将声音设置为一个全新的频道,这很好,但如果你想在之前使用该频道,你必须删除现有的频道并重新创建该频道。要做到这一点,你可以在创建频道之前做类似的事情

if (mNotificationManager != null) {
            List<NotificationChannel> channelList = mNotificationManager.getNotificationChannels();

            for (int i = 0; channelList != null && i < channelList.size(); i++) {
                mNotificationManager.deleteNotificationChannel(channelList.get(i).getId());
            }
        }

这可能对新来者有所帮助。

下面是一个适用于所有android版本的通知示例代码,其中包含各种可能的设置。

1 -> sound and vibration
2 -> sound but no vibration
3 -> no sound but vibration
4 -> no sound no vibration

输出

Github回购-> https://github.com/usman14/Notification

密码

主要活动

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.NotificationCompat;
import android.annotation.TargetApi;
import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.Switch;

public class MainActivity extends AppCompatActivity {

    public boolean shouldSound;
    public boolean shouldVibrate;
    NotificationManager notificationManager;

    Button button;
    Switch soundSwitch;
    Switch vibrationSwitch;

    @TargetApi(Build.VERSION_CODES.O)
    public void registerNormalNotificationChannel(android.app.NotificationManager notificationManager) {

        NotificationChannel channel_all = new NotificationChannel("CHANNEL_ID_ALL", "CHANNEL_NAME_ALL", NotificationManager.IMPORTANCE_HIGH);
        channel_all.enableVibration(true);
        notificationManager.createNotificationChannel(channel_all);

        NotificationChannel channel_sound = new NotificationChannel("CHANNEL_ID_SOUND", "CHANNEL_NAME_ALL", NotificationManager.IMPORTANCE_HIGH);
        channel_sound.enableVibration(false);
        notificationManager.createNotificationChannel(channel_sound);

        NotificationChannel channel_vibrate = new NotificationChannel("CHANNEL_ID_VIBRATE", "CHANNEL_NAME_ALL", NotificationManager.IMPORTANCE_HIGH);
        channel_vibrate.setSound(null, null);
        channel_vibrate.enableVibration(true);
        notificationManager.createNotificationChannel(channel_vibrate);


        NotificationChannel channel_none = new NotificationChannel("CHANNEL_ID_NONE", "CHANNEL_NAME_ALL", NotificationManager.IMPORTANCE_HIGH);
        channel_none.setSound(null, null);
        channel_none.enableVibration(false);
        notificationManager.createNotificationChannel(channel_none);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button = findViewById(R.id.btn);
        soundSwitch = findViewById(R.id.switch_sound);
        vibrationSwitch = findViewById(R.id.switch_vibration);
        notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        if (isOreoOrAbove()) {
            setupNotificationChannels();
        }

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                makeNotification();
            }
        });

        soundSwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
                if (b) {
                    shouldSound = true;
                } else {
                    shouldSound = false;
                }
            }
        });

        vibrationSwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
                if (b) {
                    shouldVibrate = true;
                } else {
                    shouldVibrate = false;
                }
            }
        });
    }

    private void setupNotificationChannels() {
        registerNormalNotificationChannel(notificationManager);
    }

    public void makeNotification() {
        NotificationCompat.Builder builder = new NotificationCompat.Builder(MainActivity.this, getChannelId())
                .setContentTitle("Hi")
                .setSmallIcon(R.mipmap.ic_launcher)
                .setContentText("Welcome to Android");

        Intent intent = new Intent(MainActivity.this, MainActivity.class);

        PendingIntent pendingIntent = PendingIntent.getActivity(MainActivity.this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);

        builder.setContentIntent(pendingIntent);
        if (shouldSound && !shouldVibrate) {
            builder.setDefaults(Notification.DEFAULT_SOUND)
                    .setVibrate(new long[]{0L});
        }
        if (shouldVibrate && !shouldSound) {
            builder.setDefaults(Notification.DEFAULT_VIBRATE)
                    .setSound(null);
        }
        if (shouldSound && shouldVibrate) {
            builder.setDefaults(Notification.DEFAULT_ALL);
        }


        notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.notify(0, builder.build());
    }

    private String getChannelId() {
        if (shouldSound && shouldVibrate) {
            return "CHANNEL_ID_ALL";
        } else if (shouldSound && !shouldVibrate) {
            return "CHANNEL_ID_SOUND";
        } else if (!shouldSound && shouldVibrate) {
            return "CHANNEL_ID_VIBRATE";
        } else {
            return "CHANNEL_ID_NONE";
        }
    }

    private boolean isOreoOrAbove() {
        return android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O;
    }
}

活动_main(xml)

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">



    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:id="@+id/sound_layout"
        android:orientation="horizontal"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="SOUND SWITCH"></TextView>


        <Switch
            android:layout_marginLeft="50dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:id="@+id/switch_sound">

        </Switch>

    </LinearLayout>

    <LinearLayout
        android:id="@+id/vibration_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:orientation="horizontal"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@id/sound_layout">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="VIBRATION SWITCH"></TextView>


        <Switch
            android:layout_marginLeft="50dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:id="@+id/switch_vibration">

        </Switch>

    </LinearLayout>


    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Send Notification"
        android:id="@+id/btn"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@id/vibration_layout"></Button>

</androidx.constraintlayout.widget.ConstraintLayout>

创建一个频道(我在 Application.clss 创建频道)

  public void initChannels(Context context) {
    if (Build.VERSION.SDK_INT < 26) {
        return;
    }
    NotificationManager notificationManager =
            (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    NotificationChannel channel = new NotificationChannel("default"/*CHANNEL ID*/,
            "CHANNEL_NAME",
            NotificationManager.IMPORTANCE_DEFAULT);
    channel.setDescription("Channel description");
    assert notificationManager != null;
    notificationManager.createNotificationChannel(channel);
}

使用这个频道 default 在创建 NotificationCompat

 .... notificationBuilder = new NotificationCompat.Builder(this,"default") ....

Android O附带了NotificationChannel,可以使用它

 int importance = NotificationManager.IMPORTANCE_HIGH;
            NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, "NOTIFICATION_CHANNEL_NAME", importance);
            notificationChannel.enableLights(true);
            notificationChannel.setLightColor(Color.RED);
            notificationChannel.enableVibration(true);
            notificationChannel.setVibrationPattern(new long[]{100, 200, 300, 400, 500, 400, 300, 200, 400});
            assert mNotificationManager != null;
            mBuilder.setChannelId(NOTIFICATION_CHANNEL_ID);
            mNotificationManager.createNotificationChannel(notificationChannel);