Java 舱单广播接收器不再工作_Java_Android_Kotlin

Java 舱单广播接收器不再工作

java android kotlin

Java 舱单广播接收器不再工作,java,android,kotlin,Java,Android,Kotlin,我在清单中设置了一个广播接收器，通过toast和log消息告诉我蓝牙何时开启或关闭。接收器在棉花糖和馅饼上都工作正常，但我需要应用程序在后台工作，所以我设置了一个持续的通知。在执行持续通知后，我现在可以在关闭运行棉花糖的设备上的应用程序后接收我的toast/log消息。我尝试在运行Pie的设备上测试应用程序，但我不再从接收器接收toast/log消息，即使应用程序已打开；我想它完全停止工作了。我读了日志，没有看到任何有用的东西 AndroidManifest.xml MainActivity

我在清单中设置了一个广播接收器，通过toast和log消息告诉我蓝牙何时开启或关闭。接收器在棉花糖和馅饼上都工作正常，但我需要应用程序在后台工作，所以我设置了一个持续的通知。在执行持续通知后，我现在可以在关闭运行棉花糖的设备上的应用程序后接收我的toast/log消息。我尝试在运行Pie的设备上测试应用程序，但我不再从接收器接收toast/log消息，即使应用程序已打开；我想它完全停止工作了。我读了日志，没有看到任何有用的东西

AndroidManifest.xml

MainActivity.kt

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

    }
}

import android.bluetooth.BluetoothAdapter
import android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import android.util.Log
import android.widget.Toast

class BReceivers : BroadcastReceiver() {
    companion object {
        const val TAG = "Bluetoooth"
    }

    override fun onReceive(context: Context?, intent: Intent?) {

        if (intent?.action.equals(BluetoothAdapter.ACTION_STATE_CHANGED)) {
            when(intent?.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR)) {
                BluetoothAdapter.STATE_OFF -> Log.d(TAG, "Bluetooth is OFF")
                BluetoothAdapter.STATE_TURNING_OFF ->  Toast.makeText(context, "Bluetooth is turning off", Toast.LENGTH_LONG).show()
                BluetoothAdapter.STATE_ON ->  Log.d(TAG, "Bluetooth is ON")
                BluetoothAdapter.STATE_TURNING_ON ->  Toast.makeText(context, "Bluetooth is turning ON", Toast.LENGTH_LONG).show()
            }
        }

    }

}

import android.app.Application
import android.content.Intent

class OngoingApp : Application() {
    override fun onCreate() {
        super.onCreate()

        startService(Intent(this, OngoingService::class.java))
    }
}

import android.app.*
import android.content.Intent
import android.os.IBinder
import android.support.v4.app.NotificationCompat
import android.content.Context
import android.os.Build
import android.support.annotation.RequiresApi
import android.support.v4.app.NotificationCompat.PRIORITY_MIN


class OngoingService : Service() {


    override fun onBind(intent: Intent): IBinder? {
        return null
    }

    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
    override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int {
        startForeground()
        return super.onStartCommand(intent, flags, startId)
    }

    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
    private fun startForeground() {
        val channelId =
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                initChannels("fearApp_service", "Fear Appeals Service")
            } else {
                // If earlier version channel ID is not used
                // https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Builder.html#NotificationCompat.Builder(android.content.Context)
                ""
            }
        val notificationIntent = Intent(this, MainActivity::class.java)
        val pendingIntent = PendingIntent.getActivity(
            this, 0,
            notificationIntent, 0
        )
        val notificationBuilder = NotificationCompat.Builder(this, channelId )
        val notification = notificationBuilder
            .setOngoing(true)
            .setContentTitle(getString(R.string.app_name))
            .setContentText("Fear Appeals is running background")
            .setSmallIcon(R.mipmap.ic_launcher)
            .setPriority(PRIORITY_MIN)
            .setCategory(Notification.CATEGORY_SERVICE)
            .setContentIntent(pendingIntent)
            .build()

        startForeground(101, notification)

    }

    @RequiresApi(Build.VERSION_CODES.O)
    private fun initChannels(channelId: String, channelName: String): String {

        val channel = NotificationChannel(
            channelId,
            channelName,
            NotificationManager.IMPORTANCE_DEFAULT)
        channel.lockscreenVisibility = Notification.VISIBILITY_PRIVATE
        channel.description = "Ongoing notification to keep the app opened."
        val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
        notificationManager.createNotificationChannel(channel)
        return channelId
    }
}

BReceivers.kt

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

    }
}

import android.bluetooth.BluetoothAdapter
import android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import android.util.Log
import android.widget.Toast

class BReceivers : BroadcastReceiver() {
    companion object {
        const val TAG = "Bluetoooth"
    }

    override fun onReceive(context: Context?, intent: Intent?) {

        if (intent?.action.equals(BluetoothAdapter.ACTION_STATE_CHANGED)) {
            when(intent?.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR)) {
                BluetoothAdapter.STATE_OFF -> Log.d(TAG, "Bluetooth is OFF")
                BluetoothAdapter.STATE_TURNING_OFF ->  Toast.makeText(context, "Bluetooth is turning off", Toast.LENGTH_LONG).show()
                BluetoothAdapter.STATE_ON ->  Log.d(TAG, "Bluetooth is ON")
                BluetoothAdapter.STATE_TURNING_ON ->  Toast.makeText(context, "Bluetooth is turning ON", Toast.LENGTH_LONG).show()
            }
        }

    }

}

import android.app.Application
import android.content.Intent

class OngoingApp : Application() {
    override fun onCreate() {
        super.onCreate()

        startService(Intent(this, OngoingService::class.java))
    }
}

import android.app.*
import android.content.Intent
import android.os.IBinder
import android.support.v4.app.NotificationCompat
import android.content.Context
import android.os.Build
import android.support.annotation.RequiresApi
import android.support.v4.app.NotificationCompat.PRIORITY_MIN


class OngoingService : Service() {


    override fun onBind(intent: Intent): IBinder? {
        return null
    }

    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
    override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int {
        startForeground()
        return super.onStartCommand(intent, flags, startId)
    }

    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
    private fun startForeground() {
        val channelId =
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                initChannels("fearApp_service", "Fear Appeals Service")
            } else {
                // If earlier version channel ID is not used
                // https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Builder.html#NotificationCompat.Builder(android.content.Context)
                ""
            }
        val notificationIntent = Intent(this, MainActivity::class.java)
        val pendingIntent = PendingIntent.getActivity(
            this, 0,
            notificationIntent, 0
        )
        val notificationBuilder = NotificationCompat.Builder(this, channelId )
        val notification = notificationBuilder
            .setOngoing(true)
            .setContentTitle(getString(R.string.app_name))
            .setContentText("Fear Appeals is running background")
            .setSmallIcon(R.mipmap.ic_launcher)
            .setPriority(PRIORITY_MIN)
            .setCategory(Notification.CATEGORY_SERVICE)
            .setContentIntent(pendingIntent)
            .build()

        startForeground(101, notification)

    }

    @RequiresApi(Build.VERSION_CODES.O)
    private fun initChannels(channelId: String, channelName: String): String {

        val channel = NotificationChannel(
            channelId,
            channelName,
            NotificationManager.IMPORTANCE_DEFAULT)
        channel.lockscreenVisibility = Notification.VISIBILITY_PRIVATE
        channel.description = "Ongoing notification to keep the app opened."
        val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
        notificationManager.createNotificationChannel(channel)
        return channelId
    }
}

OngoingApp.kt

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

    }
}

import android.bluetooth.BluetoothAdapter
import android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import android.util.Log
import android.widget.Toast

class BReceivers : BroadcastReceiver() {
    companion object {
        const val TAG = "Bluetoooth"
    }

    override fun onReceive(context: Context?, intent: Intent?) {

        if (intent?.action.equals(BluetoothAdapter.ACTION_STATE_CHANGED)) {
            when(intent?.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR)) {
                BluetoothAdapter.STATE_OFF -> Log.d(TAG, "Bluetooth is OFF")
                BluetoothAdapter.STATE_TURNING_OFF ->  Toast.makeText(context, "Bluetooth is turning off", Toast.LENGTH_LONG).show()
                BluetoothAdapter.STATE_ON ->  Log.d(TAG, "Bluetooth is ON")
                BluetoothAdapter.STATE_TURNING_ON ->  Toast.makeText(context, "Bluetooth is turning ON", Toast.LENGTH_LONG).show()
            }
        }

    }

}

import android.app.Application
import android.content.Intent

class OngoingApp : Application() {
    override fun onCreate() {
        super.onCreate()

        startService(Intent(this, OngoingService::class.java))
    }
}

import android.app.*
import android.content.Intent
import android.os.IBinder
import android.support.v4.app.NotificationCompat
import android.content.Context
import android.os.Build
import android.support.annotation.RequiresApi
import android.support.v4.app.NotificationCompat.PRIORITY_MIN


class OngoingService : Service() {


    override fun onBind(intent: Intent): IBinder? {
        return null
    }

    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
    override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int {
        startForeground()
        return super.onStartCommand(intent, flags, startId)
    }

    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
    private fun startForeground() {
        val channelId =
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                initChannels("fearApp_service", "Fear Appeals Service")
            } else {
                // If earlier version channel ID is not used
                // https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Builder.html#NotificationCompat.Builder(android.content.Context)
                ""
            }
        val notificationIntent = Intent(this, MainActivity::class.java)
        val pendingIntent = PendingIntent.getActivity(
            this, 0,
            notificationIntent, 0
        )
        val notificationBuilder = NotificationCompat.Builder(this, channelId )
        val notification = notificationBuilder
            .setOngoing(true)
            .setContentTitle(getString(R.string.app_name))
            .setContentText("Fear Appeals is running background")
            .setSmallIcon(R.mipmap.ic_launcher)
            .setPriority(PRIORITY_MIN)
            .setCategory(Notification.CATEGORY_SERVICE)
            .setContentIntent(pendingIntent)
            .build()

        startForeground(101, notification)

    }

    @RequiresApi(Build.VERSION_CODES.O)
    private fun initChannels(channelId: String, channelName: String): String {

        val channel = NotificationChannel(
            channelId,
            channelName,
            NotificationManager.IMPORTANCE_DEFAULT)
        channel.lockscreenVisibility = Notification.VISIBILITY_PRIVATE
        channel.description = "Ongoing notification to keep the app opened."
        val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
        notificationManager.createNotificationChannel(channel)
        return channelId
    }
}

OngoingService.kt

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

    }
}

import android.bluetooth.BluetoothAdapter
import android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import android.util.Log
import android.widget.Toast

class BReceivers : BroadcastReceiver() {
    companion object {
        const val TAG = "Bluetoooth"
    }

    override fun onReceive(context: Context?, intent: Intent?) {

        if (intent?.action.equals(BluetoothAdapter.ACTION_STATE_CHANGED)) {
            when(intent?.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR)) {
                BluetoothAdapter.STATE_OFF -> Log.d(TAG, "Bluetooth is OFF")
                BluetoothAdapter.STATE_TURNING_OFF ->  Toast.makeText(context, "Bluetooth is turning off", Toast.LENGTH_LONG).show()
                BluetoothAdapter.STATE_ON ->  Log.d(TAG, "Bluetooth is ON")
                BluetoothAdapter.STATE_TURNING_ON ->  Toast.makeText(context, "Bluetooth is turning ON", Toast.LENGTH_LONG).show()
            }
        }

    }

}

import android.app.Application
import android.content.Intent

class OngoingApp : Application() {
    override fun onCreate() {
        super.onCreate()

        startService(Intent(this, OngoingService::class.java))
    }
}

import android.app.*
import android.content.Intent
import android.os.IBinder
import android.support.v4.app.NotificationCompat
import android.content.Context
import android.os.Build
import android.support.annotation.RequiresApi
import android.support.v4.app.NotificationCompat.PRIORITY_MIN


class OngoingService : Service() {


    override fun onBind(intent: Intent): IBinder? {
        return null
    }

    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
    override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int {
        startForeground()
        return super.onStartCommand(intent, flags, startId)
    }

    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
    private fun startForeground() {
        val channelId =
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                initChannels("fearApp_service", "Fear Appeals Service")
            } else {
                // If earlier version channel ID is not used
                // https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Builder.html#NotificationCompat.Builder(android.content.Context)
                ""
            }
        val notificationIntent = Intent(this, MainActivity::class.java)
        val pendingIntent = PendingIntent.getActivity(
            this, 0,
            notificationIntent, 0
        )
        val notificationBuilder = NotificationCompat.Builder(this, channelId )
        val notification = notificationBuilder
            .setOngoing(true)
            .setContentTitle(getString(R.string.app_name))
            .setContentText("Fear Appeals is running background")
            .setSmallIcon(R.mipmap.ic_launcher)
            .setPriority(PRIORITY_MIN)
            .setCategory(Notification.CATEGORY_SERVICE)
            .setContentIntent(pendingIntent)
            .build()

        startForeground(101, notification)

    }

    @RequiresApi(Build.VERSION_CODES.O)
    private fun initChannels(channelId: String, channelName: String): String {

        val channel = NotificationChannel(
            channelId,
            channelName,
            NotificationManager.IMPORTANCE_DEFAULT)
        channel.lockscreenVisibility = Notification.VISIBILITY_PRIVATE
        channel.description = "Ongoing notification to keep the app opened."
        val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
        notificationManager.createNotificationChannel(channel)
        return channelId
    }
}