src/com/android/launcher3/WallpaperPickerActivity.java

/*
 * Copyright (C) 2016 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.launcher3;

import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.util.Pair;

import com.android.wallpaperpicker.tileinfo.DefaultWallpaperInfo;
import com.android.wallpaperpicker.tileinfo.FileWallpaperInfo;
import com.android.wallpaperpicker.tileinfo.WallpaperTileInfo;

import java.io.File;
import java.util.ArrayList;

public class WallpaperPickerActivity extends com.android.wallpaperpicker.WallpaperPickerActivity {

    @Override
    public void startActivityForResultSafely(Intent intent, int requestCode) {
        Utilities.startActivityForResultSafely(this, intent, requestCode);
    }

    @Override
    public boolean enableRotation() {
        return super.enableRotation() ||
                getContentResolver().call(LauncherSettings.Settings.CONTENT_URI,
                        LauncherSettings.Settings.METHOD_GET_BOOLEAN,
                        Utilities.ALLOW_ROTATION_PREFERENCE_KEY, new Bundle())
                        .getBoolean(LauncherSettings.Settings.EXTRA_VALUE);
    }

    @Override
    public ArrayList<WallpaperTileInfo> findBundledWallpapers() {
        final PackageManager pm = getPackageManager();
        final ArrayList<WallpaperTileInfo> bundled = new ArrayList<WallpaperTileInfo>(24);

        Partner partner = Partner.get(pm);
        if (partner != null) {
            final Resources partnerRes = partner.getResources();
            final int resId = partnerRes.getIdentifier(Partner.RES_WALLPAPERS, "array",
                    partner.getPackageName());
            if (resId != 0) {
                addWallpapers(bundled, partnerRes, partner.getPackageName(), resId);
            }

            // Add system wallpapers
            File systemDir = partner.getWallpaperDirectory();
            if (systemDir != null && systemDir.isDirectory()) {
                for (File file : systemDir.listFiles()) {
                    if (!file.isFile()) {
                        continue;
                    }
                    String name = file.getName();
                    int dotPos = name.lastIndexOf('.');
                    String extension = "";
                    if (dotPos >= -1) {
                        extension = name.substring(dotPos);
                        name = name.substring(0, dotPos);
                    }

                    if (name.endsWith("_small")) {
                        // it is a thumbnail
                        continue;
                    }

                    File thumbnail = new File(systemDir, name + "_small" + extension);
                    Bitmap thumb = BitmapFactory.decodeFile(thumbnail.getAbsolutePath());
                    if (thumb != null) {
                        bundled.add(new FileWallpaperInfo(
                                file, new BitmapDrawable(getResources(), thumb)));
                    }
                }
            }
        }

        Pair<ApplicationInfo, Integer> r = getWallpaperArrayResourceId();
        if (r != null) {
            try {
                Resources wallpaperRes = pm.getResourcesForApplication(r.first);
                addWallpapers(bundled, wallpaperRes, r.first.packageName, r.second);
            } catch (PackageManager.NameNotFoundException e) {
            }
        }

        if (partner == null || !partner.hideDefaultWallpaper()) {
            // Add an entry for the default wallpaper (stored in system resources)
            WallpaperTileInfo defaultWallpaperInfo = DefaultWallpaperInfo.get(this);
            if (defaultWallpaperInfo != null) {
                bundled.add(0, defaultWallpaperInfo);
            }
        }
        return bundled;
    }
}