Feat(Icons): Add custom default app icon

This commit introduces a new vector drawable `ic_default_app.xml` to be used as a placeholder icon when an application's icon cannot be loaded.

The following changes were made:
- Added `app/src/main/res/drawable/ic_default_app.xml` which defines a four-quadrant colored square with a central waiting ring.
- Modified `HomeFragment.kt` to use `R.drawable.ic_default_app` as a fallback when `PackageManager.NameNotFoundException` or other exceptions occur while trying to load an app icon.
- Modified `AppDrawerAdapter.kt` to use `R.drawable.ic_default_app` as a fallback when `PackageManager.NameNotFoundException` or other exceptions occur while trying to load an app icon.

Signed-off-by: CreativeCodeCat <[email protected]>

Author: CreativeCodeCat

app/src/main/java/com/github/droidworksstudio/mlauncher/ui/AppDrawerAdapter.kt

@@ -521,11 +521,11 @@ class AppDrawerAdapter(
                     } catch (e: PackageManager.NameNotFoundException) {
                         e.printStackTrace()
                         // Handle exception gracefully, fall back to the system icon
-                        packageManager.getApplicationIcon(packageName)
+                        AppCompatResources.getDrawable(context, R.drawable.ic_default_app)
                     } catch (e: Exception) {
                         e.printStackTrace()
                         // Handle any other exceptions gracefully, fallback to the system icon
-                        packageManager.getApplicationIcon(packageName)
+                        AppCompatResources.getDrawable(context, R.drawable.ic_default_app)
                     }
 
                     val defaultIcon = packageManager.getApplicationIcon(packageName)

app/src/main/java/com/github/droidworksstudio/mlauncher/ui/HomeFragment.kt

@@ -31,6 +31,7 @@ import android.view.ViewGroup
 import android.widget.LinearLayout
 import android.widget.Space
 import android.widget.TextView
+import androidx.appcompat.content.res.AppCompatResources
 import androidx.biometric.BiometricPrompt
 import androidx.core.app.ActivityCompat
 import androidx.core.content.ContextCompat
@@ -1019,11 +1020,11 @@ class HomeFragment : Fragment(), GestureListener, View.OnClickListener, View.OnL
                         } catch (e: PackageManager.NameNotFoundException) {
                             e.printStackTrace()
                             // Handle exception gracefully, fall back to the system icon
-                            packageManager.getApplicationIcon(packageName)
+                            AppCompatResources.getDrawable(context, R.drawable.ic_default_app)
                         } catch (e: Exception) {
                             e.printStackTrace()
                             // Handle any other exceptions gracefully, fallback to the system icon
-                            packageManager.getApplicationIcon(packageName)
+                            AppCompatResources.getDrawable(context, R.drawable.ic_default_app)
                         }
 
                         val defaultIcon = packageManager.getApplicationIcon(packageName)

app/src/main/res/drawable/ic_default_app.xml

@@ -0,0 +1,34 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="128dp"
+    android:height="128dp"
+    android:viewportWidth="128"
+    android:viewportHeight="128">
+    <!-- Top-left quadrant -->
+    <path
+        android:fillColor="#FF5E97F6"
+        android:pathData="M16,16h48v48H16z" />
+    <!-- Top-right quadrant -->
+    <path
+        android:fillColor="#FF43D6B0"
+        android:pathData="M64,16h48v48H64z" />
+    <!-- Bottom-left quadrant -->
+    <path
+        android:fillColor="#FFF9C851"
+        android:pathData="M16,64h48v48H16z" />
+    <!-- Bottom-right quadrant -->
+    <path
+        android:fillColor="#FFFF6F60"
+        android:pathData="M64,64h48v48H64z" />
+    <!-- Central off-white waiting ring -->
+    <path
+        android:fillColor="@android:color/transparent"
+        android:pathData="M64,40
+                          a24,24 0 1,1 -0.01,0"
+        android:strokeWidth="6"
+        android:strokeColor="#FFF5F5F5"
+        android:strokeLineCap="round" />
+    <!-- Optional: Add a small off-white dot to suggest progress -->
+    <path
+        android:fillColor="#FFF5F5F5"
+        android:pathData="M64,32a4,4 0 1,0 0.01,0" />
+</vector>