Added set home app settings entry and shortcut

launcher/src/main/java/com/italankin/lnch/api/LauncherShortcuts.java

@@ -3,5 +3,6 @@
 public class LauncherShortcuts {
 
     public static final String ID_SHORTCUT_CUSTOMIZE = "customize";
+    public static final String ID_SHORTCUT_SET_HOME = "set_home_app";
 
 }

launcher/src/main/java/com/italankin/lnch/feature/settings/SettingsRootFragment.java

@@ -2,8 +2,11 @@
 
 import android.content.Context;
 import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
 import android.net.Uri;
 import android.os.Bundle;
+import android.provider.Settings;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
@@ -47,6 +50,11 @@ public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
     @Override
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
+        findPreference(R.string.pref_key_home_set_default_launcher).setOnPreferenceClickListener(preference -> {
+            Intent intent = new Intent(Settings.ACTION_HOME_SETTINGS);
+            startActivity(intent);
+            return true;
+        });
         findPreference(R.string.pref_key_home_customize).setOnPreferenceClickListener(preference -> {
             sendResult(new LaunchEditModeContract().result());
             return true;
@@ -98,6 +106,28 @@ public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceStat
         });
     }
 
+    @Override
+    public void onStart() {
+        super.onStart();
+        configureSetHomeAction();
+    }
+
+    private void configureSetHomeAction() {
+        Intent home = new Intent(Intent.ACTION_MAIN);
+        home.addCategory(Intent.CATEGORY_HOME);
+        Context context = requireContext();
+        ResolveInfo resolveInfo = context.getPackageManager()
+                .resolveActivity(home, PackageManager.MATCH_DEFAULT_ONLY);
+        Preference setDefaultLauncherPref = findPreference(R.string.pref_key_home_set_default_launcher);
+        if (resolveInfo != null && resolveInfo.activityInfo != null) {
+            String currentHomePackage = resolveInfo.activityInfo.packageName;
+            setDefaultLauncherPref.setVisible(!context.getPackageName().equals(currentHomePackage));
+        } else {
+            // better hide it to not annoy user
+            setDefaultLauncherPref.setVisible(false);
+        }
+    }
+
     @Override
     public void onCreateOptionsMenu(@NonNull Menu menu, MenuInflater inflater) {
         inflater.inflate(R.menu.settings, menu);

launcher/src/main/res/drawable/ic_settings_set_home.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="?colorIconTint"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#fff"
+        android:pathData="M10,20v-6h4v6h5v-8h3L12,3 2,12h3v8z" />
+</vector>

launcher/src/main/res/values/prefs_keys.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <!-- references to preference views -->
+    <string name="pref_key_home_set_default_launcher">set_default_launcher</string>
     <string name="pref_key_search_settings">search_settings</string>
     <string name="pref_key_search_most_used_reset">search_must_used_reset</string>
     <string name="pref_key_wallpaper">wallpaper</string>

launcher/src/main/res/values/strings.xml

@@ -44,6 +44,8 @@
 
     <string name="popup_notifications_header">Notifications</string>
 
+    <string name="shortcut_set_default_launcher_hint">Set home app</string>
+
     <string name="customize_hint">Customize</string>
     <string name="customize_saved">Saved</string>
     <string name="customize_discard_message">Discard changes?</string>
@@ -106,6 +108,7 @@
     <string name="settings_version">Version %1$s</string>
     <string name="settings_source_code">Source code</string>
     <string name="settings_customize">Customize</string>
+    <string name="settings_set_default_launcher">Set lnch as home app</string>
 
     <string name="settings_category_home">Home</string>
     <string name="settings_home_wallpaper">Wallpaper</string>

launcher/src/main/res/xml/prefs_root.xml

@@ -1,7 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools">
     <PreferenceCategory>
+        <Preference
+            android:icon="@drawable/ic_settings_set_home"
+            android:key="@string/pref_key_home_set_default_launcher"
+            android:title="@string/settings_set_default_launcher"
+            app:isPreferenceVisible="false" />
         <Preference
             android:icon="@drawable/ic_action_rename"
             android:key="@string/pref_key_home_customize"

launcher/src/main/res/xml/shortcuts.xml

@@ -1,6 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <shortcuts xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
+    <shortcut
+        android:enabled="true"
+        android:icon="@drawable/ic_shortcut_set_home"
+        android:shortcutId="set_home_app"
+        android:shortcutShortLabel="@string/shortcut_set_default_launcher_hint"
+        tools:targetApi="n_mr1">
+        <intent android:action="android.settings.HOME_SETTINGS" />
+    </shortcut>
     <shortcut
         android:enabled="true"
         android:icon="@drawable/ic_shortcut_mode_edit"