I am not able to launch an android application from another android application. What to do?

Question

I am using on receive() to receive broadcast and launch another application(by intent). Whenever the app(wifimann) receives the broadcast, the other app (called kotkot(written in Kotlin)) doesn't launch from initial app despite the Wi-Fi being connected. My code is as follows:

• MainActivity:

  package com.wifi.wifimann;
  
  import androidx.appcompat.app.AppCompatActivity;
  
  import android.content.BroadcastReceiver;
  import android.content.Context;
  import android.content.Intent;
  import android.net.ConnectivityManager;
  import android.net.NetworkCapabilities;
  import android.net.NetworkInfo;
  import android.os.Bundle;
  
  public class MainActivity extends AppCompatActivity {
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
      }
  
  }
  

• ConnectivityReciever.java:

  package com.wifi.wifimann;
  import android.content.BroadcastReceiver;
  import android.content.Context;
  import android.content.Intent;
  import android.net.ConnectivityManager;
  import android.net.NetworkCapabilities;
  
  import com.wifi.wifimann.MainActivity;
  
  public class ConnectivityReceiver extends BroadcastReceiver {
  
      @Override
      public void onReceive(Context context, Intent intent) {
  
          ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
          NetworkCapabilities networkAgent = connMgr.getNetworkCapabilities(connMgr.getActiveNetwork());
  //        NetworkInfo wifi = networkAgent.hasTransport(NetworkCapabilities.TRANSPORT_WIFI);
          if (networkAgent.hasTransport(NetworkCapabilities.TRANSPORT_WIFI)){
              Intent launchIntent = context.getPackageManager().getLaunchIntentForPackage("com.example.kotkot");
              if (launchIntent != null) {
                  context.startActivity(launchIntent);//null pointer check in case package name was not found
              }
          }
  
      }
  }
  

  • AndroidManifest.xml

  <?xml version="1.0" encoding="utf-8"?>
  <manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.wifi.wifimann">
      <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
      <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
  
      <application
          android:allowBackup="true"
          android:icon="@mipmap/ic_launcher"
          android:label="@string/app_name"
          android:roundIcon="@mipmap/ic_launcher_round"
          android:supportsRtl="true"
          android:theme="@style/AppTheme">
          <receiver android:name=".MyBroadcastReceiver"  android:exported="true">
              <intent-filter>
                  <action android:name="android.intent.action.BOOT_COMPLETED"/>
                  <action android:name="android.intent.action.INPUT_METHOD_CHANGED" />
              </intent-filter>
          </receiver>
          <activity android:name=".MainActivity">
              <intent-filter>
                  <action android:name="android.intent.action.MAIN" />
  
                  <category android:name="android.intent.category.LAUNCHER" />
              </intent-filter>
          </activity>
      </application>
  
  </manifest>
  

It also says that MyBroadcastReceiver is unresolved. But my build.gradle has the same pkg name("com.wifi.wifimann") as its application ID.

• kotkot:

  • MainActivity:

  
  import androidx.appcompat.app.AppCompatActivity
  import android.os.Bundle
  import android.widget.TextView
  import androidx.core.content.ContextCompat.startActivity
  import android.content.Intent
  import android.net.ConnectivityManager
  import android.net.NetworkInfo
  import android.content.Context.CONNECTIVITY_SERVICE
  import androidx.core.content.ContextCompat.getSystemService
  import android.content.BroadcastReceiver
  import android.content.Context
  import android.net.NetworkCapabilities
  import android.os.Build
  import androidx.core.content.ContextCompat.getSystemService
  
  
  class MainActivity : AppCompatActivity() {
  
      override fun onCreate(savedInstanceState: Bundle?) {
          super.onCreate(savedInstanceState)
          setContentView(R.layout.activity_main)
          val welcome_greeting: TextView = findViewById(R.id.welcome_greeting)
          welcome_greeting.setText("kotleenhere!!")
      }
  }