| /* |
| * Copyright (C) 2020 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.wallpaper.util; |
| |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ProviderInfo; |
| import android.content.pm.ResolveInfo; |
| import android.net.Uri; |
| import android.os.Bundle; |
| import android.text.TextUtils; |
| |
| /** Util class for wallpaper preview. */ |
| public class PreviewUtils { |
| |
| private static final String PREVIEW = "preview"; |
| private static final String METHOD_GET_PREVIEW = "get_preview"; |
| |
| private final Context mContext; |
| private final String mProviderAuthority; |
| private final ProviderInfo mProviderInfo; |
| |
| public PreviewUtils(Context context, String authorityMetadataKey) { |
| mContext = context; |
| Intent homeIntent = new Intent(Intent.ACTION_MAIN).addCategory(Intent.CATEGORY_HOME); |
| |
| ResolveInfo info = context.getPackageManager().resolveActivity(homeIntent, |
| PackageManager.MATCH_DEFAULT_ONLY | PackageManager.GET_META_DATA); |
| if (info != null && info.activityInfo != null && info.activityInfo.metaData != null) { |
| mProviderAuthority = info.activityInfo.metaData.getString(authorityMetadataKey); |
| } else { |
| mProviderAuthority = null; |
| } |
| // TODO: check permissions if needed |
| mProviderInfo = TextUtils.isEmpty(mProviderAuthority) ? null |
| : mContext.getPackageManager().resolveContentProvider(mProviderAuthority, 0); |
| } |
| |
| /** Render preview under the current grid option. */ |
| public Bundle renderPreview(Bundle bundle) { |
| return mContext.getContentResolver().call(getUri(PREVIEW), METHOD_GET_PREVIEW, null, |
| bundle); |
| } |
| |
| /** Easy way to generate a Uri with the provider info from this class. */ |
| public Uri getUri(String path) { |
| return new Uri.Builder() |
| .scheme(ContentResolver.SCHEME_CONTENT) |
| .authority(mProviderInfo.authority) |
| .appendPath(path) |
| .build(); |
| } |
| |
| /** Return whether preview is supported. */ |
| public boolean supportsPreview() { |
| return mProviderInfo != null; |
| } |
| } |