prefill not displayed apps to speed up FAB dialog displaying

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

@@ -11,6 +11,7 @@ import com.simplemobiletools.applauncher.adapters.LaunchersAdapter
 import com.simplemobiletools.applauncher.dialogs.AddAppLauncherDialog
 import com.simplemobiletools.applauncher.extensions.config
 import com.simplemobiletools.applauncher.extensions.dbHelper
+import com.simplemobiletools.applauncher.extensions.getNotDisplayedLaunchers
 import com.simplemobiletools.applauncher.extensions.isAPredefinedApp
 import com.simplemobiletools.applauncher.models.AppLauncher
 import com.simplemobiletools.commons.extensions.appLaunched
@@ -25,7 +26,8 @@ import kotlinx.android.synthetic.main.activity_main.*
 import java.util.*
 
 class MainActivity : SimpleActivity(), RefreshRecyclerViewListener {
-    private var launchers = ArrayList<AppLauncher>()
+    private var displayedLaunchers = ArrayList<AppLauncher>()
+    private var notDisplayedLaunchers: ArrayList<AppLauncher>? = null
     private var mStoredPrimaryColor = 0
     private var mStoredTextColor = 0
 
@@ -38,8 +40,10 @@ class MainActivity : SimpleActivity(), RefreshRecyclerViewListener {
         storeStateVariables()
 
         fab.setOnClickListener {
-            AddAppLauncherDialog(this, launchers) {
-                setupLaunchers()
+            if (notDisplayedLaunchers != null) {
+                AddAppLauncherDialog(this, notDisplayedLaunchers!!) {
+                    setupLaunchers()
+                }
             }
         }
     }
@@ -94,9 +98,9 @@ class MainActivity : SimpleActivity(), RefreshRecyclerViewListener {
     private fun getGridAdapter() = launchers_grid.adapter as? LaunchersAdapter
 
     private fun setupLaunchers() {
-        launchers = dbHelper.getLaunchers()
+        displayedLaunchers = dbHelper.getLaunchers()
         checkInvalidApps()
-        val adapter = LaunchersAdapter(this, launchers, this, launchers_grid) {
+        val adapter = LaunchersAdapter(this, displayedLaunchers, this, launchers_grid) {
             val launchIntent = packageManager.getLaunchIntentForPackage((it as AppLauncher).packageName)
             if (launchIntent != null) {
                 startActivity(launchIntent)
@@ -108,18 +112,25 @@ class MainActivity : SimpleActivity(), RefreshRecyclerViewListener {
             }
         }
         launchers_grid.adapter = adapter
+        fillNotDisplayedLaunchers()
+    }
+
+    private fun fillNotDisplayedLaunchers() {
+        Thread {
+            notDisplayedLaunchers = getNotDisplayedLaunchers(displayedLaunchers)
+        }.start()
     }
 
     private fun checkInvalidApps() {
         val invalidIds = ArrayList<String>()
-        for ((id, name, packageName) in launchers) {
+        for ((id, name, packageName) in displayedLaunchers) {
             val launchIntent = packageManager.getLaunchIntentForPackage(packageName)
             if (launchIntent == null && !packageName.isAPredefinedApp()) {
                 invalidIds.add(id.toString())
             }
         }
         dbHelper.deleteLaunchers(invalidIds)
-        launchers = launchers.filter { !invalidIds.contains(it.id.toString()) } as ArrayList<AppLauncher>
+        displayedLaunchers = displayedLaunchers.filter { !invalidIds.contains(it.id.toString()) } as ArrayList<AppLauncher>
     }
 
     private fun storeStateVariables() {

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

@@ -1,20 +1,16 @@
 package com.simplemobiletools.applauncher.dialogs
 
 import android.app.Activity
-import android.content.Intent
-import android.content.pm.PackageManager
 import android.support.v7.app.AlertDialog
 import android.view.ViewGroup
 import com.simplemobiletools.applauncher.R
 import com.simplemobiletools.applauncher.adapters.LaunchersDialogAdapter
 import com.simplemobiletools.applauncher.extensions.dbHelper
-import com.simplemobiletools.applauncher.extensions.getLauncherDrawable
-import com.simplemobiletools.applauncher.extensions.isAPredefinedApp
 import com.simplemobiletools.applauncher.models.AppLauncher
 import com.simplemobiletools.commons.extensions.setupDialogStuff
 import kotlinx.android.synthetic.main.dialog_pick_launchers.view.*
 
-class AddAppLauncherDialog(val activity: Activity, val displayedLaunchers: ArrayList<AppLauncher>, val callback: () -> Unit) {
+class AddAppLauncherDialog(val activity: Activity, val notDisplayedLaunchers: ArrayList<AppLauncher>, val callback: () -> Unit) {
     private var dialog: AlertDialog
     private var view = (activity.layoutInflater.inflate(R.layout.dialog_pick_launchers, null) as ViewGroup)
     private var adapter: LaunchersDialogAdapter? = null
@@ -25,12 +21,8 @@ class AddAppLauncherDialog(val activity: Activity, val displayedLaunchers: Array
                 .setNegativeButton(R.string.cancel, null)
                 .create().apply {
                     activity.setupDialogStuff(view, this) {
-                        Thread {
-                            adapter = LaunchersDialogAdapter(activity, getNotDisplayedLaunchers())
-                            activity.runOnUiThread {
-                                view.pick_launchers_holder.adapter = adapter
-                            }
-                        }.start()
+                        adapter = LaunchersDialogAdapter(activity, notDisplayedLaunchers)
+                        view.pick_launchers_holder.adapter = adapter
                     }
                 }
     }
@@ -42,30 +34,4 @@ class AddAppLauncherDialog(val activity: Activity, val displayedLaunchers: Array
         callback()
         dialog.dismiss()
     }
-
-    private fun getNotDisplayedLaunchers(): ArrayList<AppLauncher> {
-        val resources = activity.resources
-        val packageManager = activity.packageManager
-        val allApps = 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 packageName = componentInfo.packageName
-
-            val drawable = if (packageName.isAPredefinedApp()) {
-                resources.getLauncherDrawable(packageName)
-            } else {
-                packageManager.getApplicationIcon(packageName)
-            }
-
-            allApps.add(AppLauncher(0, label, packageName, drawable))
-        }
-
-        val sorted = allApps.sortedWith(compareBy { it.name.toLowerCase() })
-        val unique = sorted.distinctBy { it.packageName }
-        return unique.filter { !displayedLaunchers.contains(it) && it.packageName != "com.simplemobiletools.applauncher" } as ArrayList<AppLauncher>
-    }
 }

app/src/main/kotlin/com/simplemobiletools/applauncher/extensions/Context.kt

@@ -1,9 +1,36 @@
 package com.simplemobiletools.applauncher.extensions
 
 import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
 import com.simplemobiletools.applauncher.helpers.Config
 import com.simplemobiletools.applauncher.helpers.DBHelper
+import com.simplemobiletools.applauncher.models.AppLauncher
 
 val Context.config: Config get() = Config.newInstance(applicationContext)
 
 val Context.dbHelper: DBHelper get() = DBHelper.newInstance(applicationContext)
+
+fun Context.getNotDisplayedLaunchers(displayedLaunchers: ArrayList<AppLauncher>): ArrayList<AppLauncher> {
+    val allApps = 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 packageName = componentInfo.packageName
+
+        val drawable = if (packageName.isAPredefinedApp()) {
+            resources.getLauncherDrawable(packageName)
+        } else {
+            packageManager.getApplicationIcon(packageName)
+        }
+
+        allApps.add(AppLauncher(0, label, packageName, drawable))
+    }
+
+    val sorted = allApps.sortedWith(compareBy { it.name.toLowerCase() })
+    val unique = sorted.distinctBy { it.packageName }
+    return unique.filter { !displayedLaunchers.contains(it) && it.packageName != "com.simplemobiletools.applauncher" } as ArrayList<AppLauncher>
+}