Setting black wallpaper if default launcher

3 files changed, 18 insertions, 2 deletions

diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index e91b7e7..6930722 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -2,6 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="app.olauncher">
 
+    <uses-permission android:name="android.permission.SET_WALLPAPER" />
     <uses-permission android:name="android.permission.EXPAND_STATUS_BAR" />
     <uses-permission android:name="android.permission.QUERY_ALL_PACKAGES" />
 
diff --git a/app/src/main/java/app/olauncher/MainFragment.kt b/app/src/main/java/app/olauncher/MainFragment.kt
index 9c73980..c3aca2e 100644
--- a/app/src/main/java/app/olauncher/MainFragment.kt
+++ b/app/src/main/java/app/olauncher/MainFragment.kt
@@ -46,8 +46,10 @@ class MainFragment : Fragment(), View.OnClickListener, View.OnLongClickListener
     override fun onResume() {
         super.onResume()
         populateHomeApps()
-        if (isOlauncherDefault(requireContext())) setDefaultLauncher.visibility = View.GONE
-        else setDefaultLauncher.visibility = View.VISIBLE
+        if (isOlauncherDefault(requireContext())) {
+            setDefaultLauncher.visibility = View.GONE
+            setBlackWallpaper(requireContext())
+        } else setDefaultLauncher.visibility = View.VISIBLE
     }
 
     private fun populateHomeApps() {
diff --git a/app/src/main/java/app/olauncher/Utils.kt b/app/src/main/java/app/olauncher/Utils.kt
index 6c006a4..d581dc2 100644
--- a/app/src/main/java/app/olauncher/Utils.kt
+++ b/app/src/main/java/app/olauncher/Utils.kt
@@ -1,9 +1,11 @@
 package app.olauncher
 
+import android.app.WallpaperManager
 import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
 import android.content.pm.PackageManager
+import android.graphics.Bitmap
 import java.util.*
 
 
@@ -63,4 +65,15 @@ fun resetDefaultLauncher(context: Context) {
         PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
         PackageManager.DONT_KILL_APP
     )
+}
+
+fun setBlackWallpaper(context: Context) {
+    try {
+        val bitmap = Bitmap.createBitmap(1000, 2000, Bitmap.Config.ARGB_8888)
+        bitmap.eraseColor(context.getColor(android.R.color.black))
+        val manager = WallpaperManager.getInstance(context)
+        manager.setBitmap(bitmap)
+        bitmap.recycle()
+    } catch (e: Exception) {
+    }
 }
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