| /* |
| * Copyright (C) 2018 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.wallpaper; |
| |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ResolveInfo; |
| import android.text.TextUtils; |
| |
| import androidx.preference.Preference; |
| import androidx.preference.PreferenceScreen; |
| |
| import com.android.settings.core.BasePreferenceController; |
| import com.android.settingslib.core.lifecycle.LifecycleObserver; |
| import com.android.settingslib.core.lifecycle.events.OnStart; |
| |
| import java.util.List; |
| import java.util.stream.Collectors; |
| |
| public class WallpaperTypePreferenceController extends BasePreferenceController |
| implements LifecycleObserver, OnStart { |
| |
| private PreferenceScreen mScreen; |
| |
| public WallpaperTypePreferenceController(Context context, String key) { |
| super(context, key); |
| } |
| |
| @Override |
| public void displayPreference(PreferenceScreen screen) { |
| super.displayPreference(screen); |
| mScreen = screen; |
| } |
| |
| @Override |
| public int getAvailabilityStatus() { |
| return AVAILABLE; |
| } |
| |
| @Override |
| public boolean handlePreferenceTreeClick(Preference preference) { |
| if (preference.getIntent() == null) { |
| return super.handlePreferenceTreeClick(preference); |
| } |
| mContext.startActivity(preference.getIntent()); |
| return true; |
| } |
| |
| @Override |
| public void onStart() { |
| populateWallpaperTypes(); |
| } |
| |
| private void populateWallpaperTypes() { |
| // Search for activities that satisfy the ACTION_SET_WALLPAPER action |
| final Intent intent = new Intent(Intent.ACTION_SET_WALLPAPER); |
| final PackageManager pm = mContext.getPackageManager(); |
| final List<ResolveInfo> rList = pm.queryIntentActivities(intent, |
| PackageManager.MATCH_DEFAULT_ONLY); |
| |
| removeUselessExistingPreference(rList); |
| mScreen.setOrderingAsAdded(false); |
| // Add Preference items for each of the matching activities |
| for (ResolveInfo info : rList) { |
| final String packageName = info.activityInfo.packageName; |
| Preference pref = mScreen.findPreference(packageName); |
| if (pref == null) { |
| pref = new Preference(mScreen.getContext()); |
| } |
| final Intent prefIntent = new Intent(intent).addFlags( |
| Intent.FLAG_ACTIVITY_FORWARD_RESULT); |
| prefIntent.setComponent(new ComponentName(packageName, info.activityInfo.name)); |
| pref.setIntent(prefIntent); |
| pref.setKey(packageName); |
| CharSequence label = info.loadLabel(pm); |
| if (label == null) { |
| label = packageName; |
| } |
| pref.setTitle(label); |
| pref.setIcon(info.loadIcon(pm)); |
| mScreen.addPreference(pref); |
| } |
| } |
| |
| private void removeUselessExistingPreference(List<ResolveInfo> rList) { |
| final int count = mScreen.getPreferenceCount(); |
| if (count <= 0) { |
| return; |
| } |
| for (int i = count - 1; i >= 0; i--) { |
| final Preference pref = mScreen.getPreference(i); |
| final List<ResolveInfo> result = rList.stream().filter( |
| rInfo -> TextUtils.equals(pref.getKey(), |
| rInfo.activityInfo.packageName)).collect(Collectors.toList()); |
| if (result.isEmpty()) { |
| mScreen.removePreference(pref); |
| } |
| } |
| } |
| } |