Unable to read android intent data on Unity

Question

I know this is seems like already answered, but its not working with me and I need to know if anything is missing. I spent some time but I had no success reading intent extra data this way. So I need to know if I'm missing something.

I' using a simplistic approach after not having success following this.

From android plugin I'm calling this to launch unity app:

Intent intent1 = new Intent();

intent1.setAction("com.Company.Alarm.UnityPlayerActivity");

intent1.setFlags(FLAG_ACTIVITY_NEW_TASK);

//intent1.setType("text/plain");

intent1.putExtra("KEY","This is the text message sent from Android");

context.startActivity(intent1);

And on Unity I'm using this to get the data:

string arguments = "";

    AndroidJavaClass UnityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
    AndroidJavaObject currentActivity = UnityPlayer.GetStatic<AndroidJavaObject>("currentActivity");

    AndroidJavaObject intent = currentActivity.Call<AndroidJavaObject>("getIntent");
    bool hasExtra = intent.Call<bool>("hasExtra", "arguments");

    if (hasExtra)
    {
        AndroidJavaObject extras = intent.Call<AndroidJavaObject>("getExtras");
        arguments = extras.Call<string>("getString", "KEY");
    }
    text.text = arguments;

    Debug.Log("Message Received!!!! :" + arguments);

But on app launch I got no value. Please can anyone say what is missing here or how to fix it?

edit:

    //manifest
    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.Company.Alarm" xmlns:tools="http://schemas.android.com/tools" android:installLocation="preferExternal">
  <supports-screens android:smallScreens="true" android:normalScreens="true" android:largeScreens="true" android:xlargeScreens="true" android:anyDensity="true" />
  <application android:theme="@style/UnityThemeSelector" android:icon="@mipmap/app_icon" android:label="@string/app_name" android:isGame="true" android:banner="@drawable/app_banner">
    <activity android:label="@string/app_name" android:screenOrientation="fullSensor" android:launchMode="singleTask"
        android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orientation|screenLayout|uiMode|screenSize|smallestScreenSize|fontScale|layoutDirection|density"
        android:hardwareAccelerated="false" android:name="com.Company.x.UnityPlayerActivity">
      <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
        <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
        <action android:name="com.Company.x.Unity"/>
      </intent-filter>
      <meta-data android:name="unityplayer.UnityActivity" android:value="true" />
    </activity>
    <meta-data android:name="unity.build-id" android:value="0e614110-ed04-4c63-b8d5-f8885587d24c" />
    <meta-data android:name="unity.splash-mode" android:value="0" />
    <meta-data android:name="unity.splash-enable" android:value="True" />
  </application>
  <uses-feature android:glEsVersion="0x00020000" />
  <uses-permission android:name="android.permission.INTERNET" />
  <uses-feature android:name="android.hardware.touchscreen" android:required="false" />
  <uses-feature android:name="android.hardware.touchscreen.multitouch" android:required="false" />
  <uses-feature android:name="android.hardware.touchscreen.multitouch.distinct" android:required="false" />
  <uses-feature
      android:name="android.software.leanback"
      android:required="false" />
</manifest>