Fix Settings crash when clicking search bar

- When user disable settings suggestion in App Settings, click
search button without leaving settings app. The search button is
still existed.
- Doesn't allow user to disable app in App Settings
- Add check before start search intent

Change-Id: Ifbc4615914678d8df734e14d63bb626403313d1e
Fixes: 118805907
Test: manual

src/com/android/settings/applications/ApplicationFeatureProviderImpl.java

@@ -32,6 +32,7 @@ import android.text.TextUtils;
 import android.util.ArraySet;
 
 import com.android.internal.telephony.SmsApplication;
+import com.android.settings.R;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -138,6 +139,9 @@ public class ApplicationFeatureProviderImpl implements ApplicationFeatureProvide
         if (defaultSms != null) {
             keepEnabledPackages.add(defaultSms.getPackageName());
         }
+        // Keep Settings intelligence enabled, otherwise search feature will be disabled.
+        keepEnabledPackages.add(
+                mContext.getString(R.string.config_settingsintelligence_package_name));
         return keepEnabledPackages;
     }
 

src/com/android/settings/search/SearchFeatureProvider.java

@@ -23,6 +23,7 @@ import android.app.Activity;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.provider.Settings;
 import android.view.View;
 import android.view.ViewGroup;
@@ -88,6 +89,11 @@ public interface SearchFeatureProvider {
             intent.setPackage(getSettingsIntelligencePkgName(activity));
             final Context context = activity.getApplicationContext();
 
+            if (activity.getPackageManager().queryIntentActivities(intent,
+                    PackageManager.MATCH_DEFAULT_ONLY).isEmpty()) {
+                return;
+            }
+
             FeatureFactory.getFactory(context).getSlicesFeatureProvider()
                     .indexSliceDataAsync(activity.getApplicationContext());
             FeatureFactory.getFactory(context).getMetricsFeatureProvider()

src/com/android/settings/search/actionbar/SearchMenuController.java

@@ -19,6 +19,7 @@ package com.android.settings.search.actionbar;
 import android.annotation.NonNull;
 import android.content.Context;
 import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.os.Bundle;
 import android.view.Menu;
 import android.view.MenuInflater;
@@ -80,6 +81,12 @@ public class SearchMenuController implements LifecycleObserver, OnCreateOptionsM
         searchItem.setOnMenuItemClickListener(target -> {
             final Intent intent = SearchFeatureProvider.SEARCH_UI_INTENT;
             intent.setPackage(SettingsIntelligencePkgName);
+
+            if (context.getPackageManager().queryIntentActivities(intent,
+                    PackageManager.MATCH_DEFAULT_ONLY).isEmpty()) {
+                return true;
+            }
+
             FeatureFactory.getFactory(context).getMetricsFeatureProvider()
                     .action(context, MetricsProto.MetricsEvent.ACTION_SEARCH_RESULTS);
             mHost.startActivityForResult(intent, 0 /* requestCode */);