Remove DevelopmentTileConfigActivity and clean up fragment.

- The tile activity is internal to Settings and nobody should launch it
  externally, thus it doesn't need to have its own activity. Preference
  framework can launch the fragment as a SubSetting

Fixes: 67603649
Test: robotests
Change-Id: I9ba2fc55eb7f571f816ec045567f2dd2714c44e8

src/com/android/settings/development/qstile/DevelopmentTilePreferenceController.java

@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.development.qstile;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.content.pm.ServiceInfo;
+import android.service.quicksettings.TileService;
+import android.support.v14.preference.SwitchPreference;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+
+import com.android.settingslib.core.AbstractPreferenceController;
+
+import java.util.List;
+
+public class DevelopmentTilePreferenceController extends AbstractPreferenceController {
+
+    private final OnChangeHandler mOnChangeHandler;
+    private final PackageManager mPackageManager;
+
+    public DevelopmentTilePreferenceController(Context context) {
+        super(context);
+        mOnChangeHandler = new OnChangeHandler(context);
+        mPackageManager = context.getPackageManager();
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return true;
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return null;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        Context context = screen.getContext();
+        Intent intent = new Intent(TileService.ACTION_QS_TILE)
+                .setPackage(context.getPackageName());
+        final List<ResolveInfo> resolveInfos = mPackageManager.queryIntentServices(intent,
+                PackageManager.MATCH_DISABLED_COMPONENTS);
+        for (ResolveInfo info : resolveInfos) {
+            ServiceInfo sInfo = info.serviceInfo;
+            final int enabledSetting = mPackageManager.getComponentEnabledSetting(
+                    new ComponentName(sInfo.packageName, sInfo.name));
+            boolean checked = enabledSetting == PackageManager.COMPONENT_ENABLED_STATE_ENABLED
+                    || ((enabledSetting == PackageManager.COMPONENT_ENABLED_STATE_DEFAULT)
+                    && sInfo.enabled);
+
+            SwitchPreference preference = new SwitchPreference(context);
+            preference.setTitle(sInfo.loadLabel(mPackageManager));
+            preference.setIcon(sInfo.icon);
+            preference.setKey(sInfo.name);
+            preference.setChecked(checked);
+            preference.setOnPreferenceChangeListener(mOnChangeHandler);
+            screen.addPreference(preference);
+        }
+    }
+
+    private static class OnChangeHandler implements Preference.OnPreferenceChangeListener {
+
+        private final Context mContext;
+        private final PackageManager mPackageManager;
+
+        public OnChangeHandler(Context context) {
+            mContext = context;
+            mPackageManager = context.getPackageManager();
+        }
+
+        @Override
+        public boolean onPreferenceChange(Preference preference, Object newValue) {
+            ComponentName cn = new ComponentName(
+                    mContext.getPackageName(), preference.getKey());
+            mPackageManager.setComponentEnabledSetting(cn, (Boolean) newValue
+                            ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
+                            : PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
+                    PackageManager.DONT_KILL_APP);
+            return true;
+        }
+    }
+}