这是一个典型的"Android 12 (API 31)"的问题，新的行为限制了PendingIntent的使用，PendingIntent不能再启动应用程序的其他活动，必须是“目标”活动。这会导致某些从通知或小部件启动的活动意外退出或打开其他活动的问题。

要解决此问题，需要使用新的API，并添加以下操作：

1.在应用程序的 build.gradle 文件中添加以下依赖：

dependencies { implementation 'androidx.activity:activity-ktx:1.4.0-beta01' }

2.使用registerRemoteInputReceiver()方法注册RemoteInput接收器，以获取通知中的输入文本。

NotificationCompat.Action action = new NotificationCompat.Action.Builder( R.drawable.icon, "Reply", replyPendingIntent) .addRemoteInput(remoteInput) .build();

Notification notification = new NotificationCompat.Builder(context, channel_id) .setContentTitle("Title") .setContentText("Content") .setSmallIcon(R.drawable.icon) .addAction(action) .build();

// Step 1: Register the PendingIntent PendingIntent newReplyPendingIntent = PendingIntent.getBroadcast( context, 0, replyIntent, PendingIntent.FLAG_UPDATE_CURRENT);

// Step 2: Build the RemoteInput RemoteInput remoteInput = new RemoteInput.Builder(KEY_TEXT_REPLY) .setLabel("Reply") .build();

// Step 3: Build the NotificationCompat.Action NotificationCompat.Action newReplyAction = new NotificationCompat.Action.Builder( R.drawable.icon, "Reply", newReplyPendingIntent) .addRemoteInput(remoteInput) .build();

// Step 4: Build the new NotificationCompat.Builder and set the actions NotificationCompat.Builder newBuilder = new NotificationCompat.Builder(context, channel_id) .setContentTitle("Title") .setContentText("Content") .setSmallIcon(R.drawable.icon) .addAction(newReplyAction);

// Step 5: Build the PendingIntent with NavDeepLinkBuilder // Ensure to set the NavDeepLinkBuilder with the correct activity and setIntent PendingIntent newContentIntent = new NavDeepLinkBuilder(context) .setGraph(R.navigation.nav_graph) // Your NavGraph .setDestination(R.id.destination_activity) // Your NavDestination .setIntent(intent) // Your Intent .createPendingIntent();

// Step 6: Set the content intent to the new PendingIntent newBuilder.setContentIntent(newContentIntent);

// Step 7: Build the new notification Notification newNotification = newBuilder.build();