Convert Most Class java to Kotlin

app/src/main/java/com/college/collegeconnect/activities/ContributeActivity.kt

@@ -0,0 +1,65 @@
+package com.college.collegeconnect.activities
+
+import android.content.Intent
+import android.content.pm.ResolveInfo
+import android.os.Bundle
+import android.widget.CompoundButton
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+import com.college.collegeconnect.databinding.ActivityContributeBinding
+
+class ContributeActivity : AppCompatActivity() {
+
+    private lateinit var binding: ActivityContributeBinding
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivityContributeBinding.inflate(layoutInflater)
+
+        setContentView(binding.root)
+
+        binding.develoeprCheck.setOnCheckedChangeListener(CompoundButton.OnCheckedChangeListener { buttonView, isChecked -> if (isChecked) binding.nondeveloperCheck.setEnabled(false) else binding.nondeveloperCheck.setEnabled(true) })
+        binding.nondeveloperCheck.setOnCheckedChangeListener(CompoundButton.OnCheckedChangeListener { buttonView, isChecked -> if (isChecked) binding.develoeprCheck.setEnabled(false) else binding.develoeprCheck.setEnabled(true) })
+
+        // Send email to developers
+        binding.submitContri.setOnClickListener {
+            if (binding.collegeContri.getEditText()!!.text.toString() == null || binding.courseContri.getEditText()!!.text.toString() == null || binding.mobileContri.getEditText()!!.text.toString() == null) Toast.makeText(this@ContributeActivity, "Please ensure all the fields are not empty.", Toast.LENGTH_SHORT).show() else {
+                val intent = intent
+                val name = intent.getStringExtra("Name")
+                val dev_status: String
+                dev_status = if (binding.develoeprCheck.isChecked) "Yes" else "No"
+
+                // Forming email body
+                val mesaage = """
+                    My name is $name
+
+                    Am I a developer?: $dev_status
+
+                    College Name: ${binding.collegeContri.getEditText()!!.text}
+
+                    Course: ${binding.courseContri.getEditText()!!.text}
+
+                    Contact
+                    Mobile Number: ${binding.mobileContri.getEditText()!!.text}
+
+                    Type below this line for any extra message
+                    ---------------------
+
+                """.trimIndent()
+                val intent_email = Intent(Intent.ACTION_SEND)
+                intent_email.type = "text/plain"
+                val recipients = arrayOf("[email protected]")
+                intent_email.putExtra(Intent.EXTRA_EMAIL, recipients)
+                intent_email.putExtra(Intent.EXTRA_TEXT, mesaage)
+                val pm = packageManager
+                val matches = pm.queryIntentActivities(intent_email, 0)
+                var best: ResolveInfo? = null
+                for (info in matches) if (info.activityInfo.packageName.endsWith(".gm") ||
+                    info.activityInfo.name.toLowerCase().contains("gmail")
+                ) best = info
+                if (best != null) intent_email.setClassName(best.activityInfo.packageName, best.activityInfo.name)
+                startActivity(intent_email)
+            }
+        }
+    }
+}

app/src/main/java/com/college/collegeconnect/activities/FeedbackActivity.kt

@@ -1,8 +1,5 @@
 package com.college.collegeconnect.activities
 
-import android.content.ActivityNotFoundException
-import android.content.Intent
-import android.net.Uri
 import android.os.Bundle
 import android.view.MenuItem
 import androidx.appcompat.app.AlertDialog
@@ -22,15 +19,14 @@ import com.hsalf.smileyrating.SmileyRating
 import kotlinx.android.synthetic.main.activity_feedback.*
 import kotlinx.android.synthetic.main.toolbar_main.*
 
-
 class FeedbackActivity : AppCompatActivity() {
 
     private lateinit var mood: String
     lateinit var databaseReference: DatabaseReference
     lateinit var firebaseAuth: FirebaseAuth
     lateinit var alertDialog: AlertDialog.Builder
     var email: String = ""
-    private lateinit var manager:ReviewManager
+    private lateinit var manager: ReviewManager
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_feedback)
@@ -47,7 +43,7 @@ class FeedbackActivity : AppCompatActivity() {
         manager = ReviewManagerFactory.create(this)
         alertDialog = MaterialAlertDialogBuilder(this)
         alertDialog.setTitle("Thank you")
-                .setMessage("Rate us on Playstore?")
+            .setMessage("Rate us on Playstore?")
 
 //        alertDialog.setPositiveButton("Sure") { _, _ ->
 //            val uri = Uri.parse("market://details?id=" + this.packageName)
@@ -75,27 +71,26 @@ class FeedbackActivity : AppCompatActivity() {
                     val reviewInfo = request.result
                     val flow = manager.launchReviewFlow(this, reviewInfo)
                     flow.addOnCompleteListener {
-                        SaveSharedPreference.setRev(this,true)
+                        SaveSharedPreference.setRev(this, true)
                     }
                 } else {
                     // There was some problem, continue regardless of the result.
                     dialog.dismiss()
                     finish()
-                    Navigation.act.finish()
+                    Navigation.act?.finish()
                 }
             }
         }.setNegativeButton("Later") { dialog, _ ->
             dialog.dismiss()
             finish()
-            Navigation.act.finish()
+            Navigation.act?.finish()
         }
 
         ansProblem.editText?.doAfterTextChanged { ansProblem.error = null }
         ansFeature.editText?.doAfterTextChanged { ansFeature.error = null }
         ansNoFeature.editText?.doAfterTextChanged { ansNoFeature.error = null }
         ansFeature.editText?.doAfterTextChanged { ansFeature.error = null }
 
-
         smileyRating.setRating(SmileyRating.Type.GREAT, true)
         solveAns.setIndicatorTextFormat("\${TICK_TEXT}")
         indicatorSeekBar.setIndicatorTextFormat("\${TICK_TEXT}")
@@ -131,16 +126,18 @@ class FeedbackActivity : AppCompatActivity() {
     }
 
     private fun submit() {
-        val feedback = Feedback(email,
-                mood,
-                ansProblem.editText?.text.toString(),
-                solveAns.progress,
-                ansNoFeature.editText?.text.toString(),
-                indicatorSeekBar.progress,
-                ansConfused.editText?.text.toString(),
-                ansFeature.editText?.text.toString())
+        val feedback = Feedback(
+            email,
+            mood,
+            ansProblem.editText?.text.toString(),
+            solveAns.progress,
+            ansNoFeature.editText?.text.toString(),
+            indicatorSeekBar.progress,
+            ansConfused.editText?.text.toString(),
+            ansFeature.editText?.text.toString()
+        )
         databaseReference.setValue(feedback)
-        if(!SaveSharedPreference.getReview(this)) {
+        if (!SaveSharedPreference.getReview(this)) {
             val dialog = alertDialog.create()
             dialog.show()
         }
@@ -154,4 +151,4 @@ class FeedbackActivity : AppCompatActivity() {
         }
         return super.onOptionsItemSelected(item)
     }
-}
+}