I am making an application in android studio in kotlin language
MainActivity.kt
package com.example.humidifiercontrollermqttclient
import android.annotation.SuppressLint
import android.content.Context
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.core.content.ContextCompat
import com.example.humidifiercontrollermqttclient.databinding.ActivityMainBinding
import org.eclipse.paho.android.service.MqttAndroidClient
import org.eclipse.paho.client.mqttv3.IMqttActionListener
import org.eclipse.paho.client.mqttv3.IMqttToken
import org.eclipse.paho.client.mqttv3.MqttClient
import org.eclipse.paho.client.mqttv3.MqttConnectOptions
import org.eclipse.paho.client.mqttv3.MqttException
class MainActivity : AppCompatActivity() {
private lateinit var binding: ActivityMainBinding
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityMainBinding.inflate(layoutInflater)
setContentView(binding.root)
val brokeraddr = "dingo.rmq.cloudamqp.com:1883"
val clientuser = "itjvjntm:itjvjntm"
val clientpwd = "0wRRv4temHtc489aUCkH4_g1R6mJWuyo"
val clientId = MqttClient.generateClientId()
val mqttClient = MqttAndroidClient(applicationContext, "tcp://$brokeraddr", clientId)
val connOptions = MqttConnectOptions()
connOptions.userName = clientuser
connOptions.password = clientpwd.toCharArray()
try {
mqttClient.connect(connOptions, null, object : IMqttActionListener {
override fun onSuccess(asyncActionToken: IMqttToken) {
binding.MQTTStatus.setText("successful")
}
override fun onFailure(asyncActionToken: IMqttToken, exception: Throwable?) {
binding.MQTTStatus.text = "failure"
}
})
} catch (e: MqttException) {
// Get stack trace
e.printStackTrace()
}
}
}
build.gradle.kts (:app)
plugins {
id("com.android.application")
id("org.jetbrains.kotlin.android")
}
android {
namespace = "com.example.humidifiercontrollermqttclient"
compileSdk = 34
defaultConfig {
applicationId = "com.example.humidifiercontrollermqttclient"
minSdk = 28
targetSdk = 34
versionCode = 1
versionName = "1.0"
testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
isMinifyEnabled = false
proguardFiles(
getDefaultProguardFile("proguard-android-optimize.txt"),
"proguard-rules.pro"
)
}
}
compileOptions {
sourceCompatibility = JavaVersion.VERSION_1_8
targetCompatibility = JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = "1.8"
}
buildFeatures {
viewBinding = true
}
}
dependencies {
implementation("org.eclipse.paho:org.eclipse.paho.client.mqttv3:1.2.5")
implementation("org.eclipse.paho:org.eclipse.paho.android.service:1.1.1")
implementation("androidx.core:core-ktx:1.13.1")
implementation("androidx.appcompat:appcompat:1.7.0")
implementation("com.google.android.material:material:1.12.0")
implementation("androidx.constraintlayout:constraintlayout:2.1.4")
testImplementation("junit:junit:4.13.2")
androidTestImplementation("androidx.test.ext:junit:1.2.1")
androidTestImplementation("androidx.test.espresso:espresso-core:3.6.1")
}
red text in Logcat
FATAL EXCEPTION: MQTT Rec: paho6645650270000
Process: com.example.humidifiercontrollermqttclient, PID: 15113
java.lang.SecurityException: com.example.humidifiercontrollermqttclient: One of RECEIVER_EXPORTED or RECEIVER_NOT_EXPORTED should be specified when a receiver isn’t being registered exclusively for system broadcasts
at android.os.Parcel.createExceptionOrNull(Parcel.java:3057)
at android.os.Parcel.createException(Parcel.java:3041)
at android.os.Parcel.readException(Parcel.java:3024)
at android.os.Parcel.readException(Parcel.java:2966)
at android.app.IActivityManager$Stub$Proxy.registerReceiverWithFeature(IActivityManager.java:5684)
at android.app.ContextImpl.registerReceiverInternal(ContextImpl.java:1852)
at android.app.ContextImpl.registerReceiver(ContextImpl.java:1792)
at android.app.ContextImpl.registerReceiver(ContextImpl.java:1780)
at android.content.ContextWrapper.registerReceiver(ContextWrapper.java:755)
at org.eclipse.paho.android.service.AlarmPingSender.start(AlarmPingSender.java:74)
at org.eclipse.paho.client.mqttv3.internal.ClientState.connected(ClientState.java:1214)
at org.eclipse.paho.client.mqttv3.internal.ClientState.notifyReceivedAck(ClientState.java:1050)
at org.eclipse.paho.client.mqttv3.internal.CommsReceiver.run(CommsReceiver.java:151)
at java.lang.Thread.run(Thread.java:1012)
Caused by: android.os.RemoteException: Remote stack trace:
at com.android.server.am.ActivityManagerService.registerReceiverWithFeature(ActivityManagerService.java:13927)
at android.app.IActivityManager$Stub.onTransact(IActivityManager.java:2570)
at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:2720)
at android.os.Binder.execTransactInternal(Binder.java:1339)
at android.os.Binder.execTransact(Binder.java:1275)
I tried adding implementation("androidx.localbroadcastmanager:localbroadcastmanager:1.1.0")
to build.gradle in dependencies, It didn’t help
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