do not display the already added launchers

app/build.gradle

@@ -30,6 +30,7 @@ dependencies {
     compile 'com.android.support:appcompat-v7:23.4.0'
     compile 'com.android.support:recyclerview-v7:23.4.0'
     compile 'com.android.support:design:23.4.0'
+    compile 'com.google.code.gson:gson:2.7'
     compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
 }
 

app/src/main/kotlin/com/simplemobiletools/applauncher/activities/MainActivity.kt

@@ -1,9 +1,11 @@
 package com.simplemobiletools.applauncher.activities
 
 import android.content.Intent
+import android.content.pm.PackageManager
 import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
+import com.google.gson.Gson
 import com.simplemobiletools.applauncher.R
 import com.simplemobiletools.applauncher.adapters.RecyclerAdapter
 import com.simplemobiletools.applauncher.databases.DbHelper
@@ -14,10 +16,12 @@ import com.simplemobiletools.applauncher.extensions.viewIntent
 import com.simplemobiletools.applauncher.models.AppLauncher
 import kotlinx.android.synthetic.main.activity_main.*
 import java.util.*
+import kotlin.comparisons.compareBy
 
 class MainActivity : SimpleActivity() {
     lateinit var dbHelper: DbHelper
     lateinit var launchers: ArrayList<AppLauncher>
+    lateinit var remainingLaunchers: ArrayList<AppLauncher>
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -33,8 +37,14 @@ class MainActivity : SimpleActivity() {
             }
         }
 
+        remainingLaunchers = getNotDisplayedLaunchers()
+
         fab.setOnClickListener {
-            AddAppDialog().show(fragmentManager, "")
+            val dialog = AddAppDialog()
+            val args = Bundle()
+            args.putString(dialog.LAUNCHERS, Gson().toJson(remainingLaunchers))
+            dialog.arguments = args
+            dialog.show(fragmentManager, "")
         }
     }
 
@@ -57,6 +67,24 @@ class MainActivity : SimpleActivity() {
         return super.onOptionsItemSelected(item)
     }
 
+    private fun getNotDisplayedLaunchers(): ArrayList<AppLauncher> {
+        val apps = ArrayList<AppLauncher>()
+        val intent = Intent(Intent.ACTION_MAIN, null)
+        intent.addCategory(Intent.CATEGORY_LAUNCHER)
+        val list = packageManager.queryIntentActivities(intent, PackageManager.PERMISSION_GRANTED)
+        for (info in list) {
+            val componentInfo = info.activityInfo.applicationInfo
+            val label = componentInfo.loadLabel(packageManager).toString()
+            val pkgName = componentInfo.packageName
+            apps.add(AppLauncher(label, pkgName, 0))
+        }
+
+        val sorted = apps.sortedWith(compareBy { it.name.toLowerCase() })
+        val unique = sorted.distinctBy { it.pkgName }
+        val filtered = unique.filter { !launchers.contains(it) }
+        return filtered as ArrayList<AppLauncher>
+    }
+
     override fun onDestroy() {
         super.onDestroy()
         preferences.isFirstRun = false

app/src/main/kotlin/com/simplemobiletools/applauncher/adapters/RecyclerAdapter.kt

@@ -12,7 +12,6 @@ import com.simplemobiletools.applauncher.extensions.show
 import com.simplemobiletools.applauncher.models.AppLauncher
 import kotlinx.android.synthetic.main.app_launcher_dialog_item.view.*
 
-
 class RecyclerAdapter(val cxt: Context, val displayChecks: Boolean, val launchers: List<AppLauncher>, val itemClick: (AppLauncher) -> Unit) :
         RecyclerView.Adapter<RecyclerAdapter.ViewHolder>() {
 

app/src/main/kotlin/com/simplemobiletools/applauncher/dialogs/AddAppDialog.kt

@@ -2,25 +2,34 @@ package com.simplemobiletools.applauncher.dialogs
 
 import android.app.Dialog
 import android.app.DialogFragment
-import android.content.Intent
-import android.content.pm.PackageManager
 import android.os.Bundle
 import android.support.v7.app.AlertDialog
 import android.view.View
+import com.google.gson.Gson
+import com.google.gson.reflect.TypeToken
 import com.simplemobiletools.applauncher.R
 import com.simplemobiletools.applauncher.adapters.RecyclerAdapter
 import com.simplemobiletools.applauncher.models.AppLauncher
 import kotlinx.android.synthetic.main.launcher_picker.view.*
 import java.util.*
-import kotlin.comparisons.compareBy
 
 class AddAppDialog() : DialogFragment() {
+    val LAUNCHERS = "launchers"
+    lateinit var launchers: ArrayList<AppLauncher>
+
     override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
         val builder = AlertDialog.Builder(activity)
         builder.setTitle(R.string.add_apps)
 
+        val json = arguments.getString(LAUNCHERS)
+        val listType = object : TypeToken<ArrayList<AppLauncher>>() {}.type
+        launchers = Gson().fromJson(json, listType)
+
         val recyclerView = View.inflate(activity, R.layout.launcher_picker, null)
-        fillGrid(recyclerView)
+        recyclerView.launchers_holder.adapter = RecyclerAdapter(activity, true, launchers) {
+
+        }
+
         builder.setView(recyclerView)
 
         builder.setPositiveButton(android.R.string.ok, { dialogInterface, i ->
@@ -30,24 +39,4 @@ class AddAppDialog() : DialogFragment() {
         builder.setNegativeButton(android.R.string.cancel, null)
         return builder.create()
     }
-
-    private fun fillGrid(recyclerView: View) {
-        val apps = ArrayList<AppLauncher>()
-        val packageManager = activity.packageManager
-        val intent = Intent(Intent.ACTION_MAIN, null)
-        intent.addCategory(Intent.CATEGORY_LAUNCHER)
-        val list = packageManager.queryIntentActivities(intent, PackageManager.PERMISSION_GRANTED)
-        for (info in list) {
-            val componentInfo = info.activityInfo.applicationInfo
-            val label = componentInfo.loadLabel(packageManager).toString()
-            val pkgName = componentInfo.packageName
-            apps.add(AppLauncher(label, pkgName, 0))
-        }
-
-        val sorted = apps.sortedWith(compareBy { it.name.toLowerCase() })
-        val unique = sorted.distinctBy { it.pkgName }
-        recyclerView.launchers_holder.adapter = RecyclerAdapter(activity, true, unique) {
-
-        }
-    }
 }