我正在开发需要显示通知的应用程序.对于通知，我正在使用 FireBase Cloud Messaging (FCM).当应用程序处于后台时，我能够收到通知.
但是当我点击通知时，它会重定向到 home.java 页面.我希望它重定向到 Notification.java 页面.
所以，请告诉我如何在点击通知时指定活动.我正在使用两种服务:
1.)MyFirebaseMessagingService
2.)MyFirebaseInstanceIDService
这是我在 MyFirebaseMessagingService 类中的 onMessageReceived() 方法的代码示例.
公共类 MyFirebaseMessagingService 扩展 FirebaseMessagingService {私有静态最终字符串 TAG = "FirebaseMessageService";位图位图；公共无效 onMessageReceived(RemoteMessage remoteMessage) {Log.d(TAG, "发件人:" + remoteMessage.getFrom());//检查消息是否包含数据负载.if (remoteMessage.getData().size() > 0) {Log.d(TAG, "消息数据负载:" + remoteMessage.getData());}//检查消息是否包含通知负载.if (remoteMessage.getNotification() != null) {Log.d(TAG, "消息通知正文:" + remoteMessage.getNotification().getBody());}//此外，如果您打算根据收到的 FCM 生成自己的通知//消息，这里是应该启动的地方.请参阅下面的 sendNotification 方法.}/*** 创建并显示包含收到的 FCM 消息的简单通知.*/private void sendNotification(String messageBody, Bitmap image, String TrueOrFalse) {Intent intent = new Intent(this, Notification.class);意图.addFlags(意图.FLAG_ACTIVITY_CLEAR_TOP)；intent.putExtra("通知", TrueOrFalse);PendingIntent pendingIntent = PendingIntent.getActivity(this, 0/* 请求代码 */, intent,PendingIntent.FLAG_ONE_SHOT);Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this).setLargeIcon(image)/*通知图标图片*/.setContentTitle(messageBody).setStyle(新 NotificationCompat.BigPictureStyle().bigPicture(image))/*图片通知*/.setAutoCancel(真).setSound(defaultSoundUri).setContentIntent(pendingIntent);通知管理器通知管理器 =(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);notificationManager.notify(0/* 通知 ID */, notificationBuilder.build());}/**从收到的 URL 中获取位图图像* */公共位图getBitmapfromUrl(字符串imageUrl){尝试 {URL url = 新 URL(imageUrl);HttpURLConnection 连接 = (HttpURLConnection) url.openConnection();连接.setDoInput(true);连接.连接()；InputStream 输入 = connection.getInputStream();位图位图 = BitmapFactory.decodeStream(input);返回位图；} 捕捉(异常 e){//TODO 自动生成的 catch 块e.printStackTrace();返回空值；}}使用FCM，可以发送两个发送给客户的消息类型:
1.通知消息: 有时被认为是显示消息".
FCM 会代表客户端应用自动向最终用户设备显示消息.通知消息具有一组预定义的用户可见键.
<强>2.数据消息:由客户端应用处理.
客户端应用负责处理数据消息.数据消息只有自定义键值对.
根据 FCM 文档 在 Android 应用中接收消息 p><块引用>
在通知负载中设置 click_action:
所以，如果你想处理到达后台的消息，你必须发送带有消息的click_action.
click_action 是 通知负载参数
如果您想打开您的应用并执行特定操作，请在通知负载中设置 click_action 并将其映射到您要启动的 Activity 中的意图过滤器.
例如，将 click_action 设置为 OPEN_ACTIVITY_1 以触发如下所示的意图过滤器:
<intent-filter><action android:name="OPEN_ACTIVITY_1"/><类别 android:name="android.intent.category.DEFAULT"/></意图过滤器>FCM 负载如下所示:
<代码>{"to":"some_device_token",内容可用":是的，通知": {标题":你好"，"body": "测试信息",click_action":OPEN_ACTIVITY_1"},数据": {额外":果汁"}}I am working on App in which I am required to show notification. For notification, i am using FireBase Cloud Messaging (FCM). I am able to get Notification when app is in background.
But when I click on notification, it redirect to home.java page. I want it to redirect to Notification.java page.
So,please tell me how to specify Activity in on Click of notification. I am using two services:
1.)MyFirebaseMessagingService
2.)MyFirebaseInstanceIDService
This is my code sample for onMessageReceived() method in MyFirebaseMessagingService class.
public class MyFirebaseMessagingService extends FirebaseMessagingService {
private static final String TAG = "FirebaseMessageService";
Bitmap bitmap;
public void onMessageReceived(RemoteMessage remoteMessage) {
Log.d(TAG, "From: " + remoteMessage.getFrom());
// Check if message contains a data payload.
if (remoteMessage.getData().size() > 0) {
Log.d(TAG, "Message data payload: " + remoteMessage.getData());
}
// Check if message contains a notification payload.
if (remoteMessage.getNotification() != null) {
Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
}
// Also if you intend on generating your own notifications as a result of a received FCM
// message, here is where that should be initiated. See sendNotification method below.
}
/**
* Create and show a simple notification containing the received FCM message.
*/
private void sendNotification(String messageBody, Bitmap image, String TrueOrFalse) {
Intent intent = new Intent(this, Notification.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.putExtra("Notification", TrueOrFalse);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
PendingIntent.FLAG_ONE_SHOT);
Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
.setLargeIcon(image)/*Notification icon image*/
.setContentTitle(messageBody)
.setStyle(new NotificationCompat.BigPictureStyle()
.bigPicture(image))/*Notification with Image*/
.setAutoCancel(true)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent);
NotificationManager notificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
}
/*
*To get a Bitmap image from the URL received
* */
public Bitmap getBitmapfromUrl(String imageUrl) {
try {
URL url = new URL(imageUrl);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
Bitmap bitmap = BitmapFactory.decodeStream(input);
return bitmap;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
return null;
}
}
With FCM, you can send two types of messages to clients:
1. Notification messages: sometimes thought of as "display messages."
FCM automatically displays the message to end-user devices on behalf of the client app. Notification messages have a predefined set of user-visible keys.
2. Data messages: which are handled by the client app.
Client app is responsible for processing data messages. Data messages have only custom key-value pairs.
According to FCM document Receive Messages in an Android App
- Notifications delivered when your app is in the background. In this case, the notification is delivered to the device’s system tray. A user tap on a notification opens the app launcher by default.
- Messages with both notification and data payload, both background and foreground. In this case, the notification is delivered to the
device’s system tray, and the data payload is delivered in the extras of the intent of your launcher Activity.
Set click_action in the notification payload:
So, if you want to process the messages arrived in the background, you have to send click_action with message.
click_action is a parameter of the notification payload
If you want to open your app and perform a specific action, set click_action in the notification payload and map it to an intent filter in the Activity you want to launch.
For example, set click_action to OPEN_ACTIVITY_1 to trigger an intent filter like the following:
<intent-filter>
<action android:name="OPEN_ACTIVITY_1" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
FCM payload looks like below:
{
"to":"some_device_token",
"content_available": true,
"notification": {
"title": "hello",
"body": "test message",
"click_action": "OPEN_ACTIVITY_1"
},
"data": {
"extra":"juice"
}
}
这篇关于在 FCM 中单击通知时打开特定的 Activity的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持跟版网！