برای ارائه نقشههایی از منابع برنامه خود، یک URI را در قالب زیر ارسال کنید:
android.resource://PACKAGE_NAME/RESOURCE_TYPE/RESOURCE_NAME
// Example URI - note that there is no file extension at the end of the URI
android.resource://com.example.app/drawable/example_drawable
این قطعه نحوه ایجاد یک URI با این فرمت را از یک شناسه منبع نشان می دهد:
ارائه آثار هنری با استفاده از یک ارائه دهنده محتوا
این مراحل نحوه بارگیری هنر از یک URI وب و نمایش آن از طریق یک URI محلی با استفاده از یک ارائه دهنده محتوا را توضیح می دهد. برای مثال کامل، اجرایopenFile و متدهای اطراف آن را در برنامه نمونه برنامه پخش موسیقی جهانی اندروید ببینید.
یک content:// URI مطابق با URI وب بسازید. سرویس مرورگر رسانه و جلسه رسانه این URI محتوا را به Android Auto و AAOS منتقل میکند.
کاتلین
funUri.asAlbumArtContentURI():Uri{returnUri.Builder().scheme(ContentResolver.SCHEME_CONTENT).authority(CONTENT_PROVIDER_AUTHORITY).appendPath(this.getPath())// Make sure you trust the URI.build()}
جاوا
publicstaticUriasAlbumArtContentURI(UriwebUri){returnnewUri.Builder().scheme(ContentResolver.SCHEME_CONTENT).authority(CONTENT_PROVIDER_AUTHORITY).appendPath(webUri.getPath())// Make sure you trust the URI!.build();}
در اجرای ContentProvider.openFile ، بررسی کنید که آیا فایلی برای URI مربوطه وجود دارد یا خیر. اگر نه، فایل تصویر را دانلود و کش کنید. این قطعه کد از Glide استفاده می کند.
محتوا و نمونه کدها در این صفحه مشمول پروانههای توصیفشده در پروانه محتوا هستند. جاوا و OpenJDK علامتهای تجاری یا علامتهای تجاری ثبتشده Oracle و/یا وابستههای آن هستند.
تاریخ آخرین بهروزرسانی 2025-08-15 بهوقت ساعت هماهنگ جهانی.
[[["درک آسان","easyToUnderstand","thumb-up"],["مشکلم را برطرف کرد","solvedMyProblem","thumb-up"],["غیره","otherUp","thumb-up"]],[["اطلاعاتی که نیاز دارم وجود ندارد","missingTheInformationINeed","thumb-down"],["بیشازحد پیچیده/ مراحل بسیار زیاد","tooComplicatedTooManySteps","thumb-down"],["قدیمی","outOfDate","thumb-down"],["مشکل ترجمه","translationIssue","thumb-down"],["مشکل کد / نمونهها","samplesCodeIssue","thumb-down"],["غیره","otherDown","thumb-down"]],["تاریخ آخرین بهروزرسانی 2025-08-15 بهوقت ساعت هماهنگ جهانی."],[],[],null,["# Display media artwork\n\nArtwork for media items must be passed as a local URI using either\n[`ContentResolver.SCHEME_CONTENT`](/reference/android/content/ContentResolver#SCHEME_CONTENT) or\n[`ContentResolver.SCHEME_ANDROID_RESOURCE`](/reference/android/content/ContentResolver#SCHEME_ANDROID_RESOURCE). This local URI must resolve to\neither a bitmap or a vector drawable.\n\n- For `MediaDescriptionCompat` objects representing items in the [content\n hierarchy](/training/cars/media/create-media-browser/content-hierarchy#onLoadChildren), pass the URI through [`setIconUri`](/reference/android/support/v4/media/MediaDescriptionCompat.Builder#setIconUri(android.net.Uri)).\n\n | **Warning:** Don't provide artwork using [`setIconBitmap`](/reference/android/support/v4/media/MediaDescriptionCompat.Builder#setIconUri(android.net.Uri)). While this method is supported on Android Auto, it isn't supported on Android Automotive OS (AAOS). Additionally, including many bitmaps in a result can cause you to exceed the [1MB binder size limit](/guide/components/activities/parcelables-and-bundles#sdbp), causing your app to be unresponsive.\n- For `MediaMetadataCompat` objects representing the [playing item](/media/legacy/mediasession#maintain-state),\n use any of these keys to pass the URI through [`putString`](/reference/android/support/v4/media/MediaMetadataCompat.Builder#putString(java.lang.String,%20java.lang.String)):\n\n - [`MediaMetadataCompat.METADATA_KEY_DISPLAY_ICON_URI`](/reference/android/support/v4/media/MediaMetadataCompat#METADATA_KEY_DISPLAY_ICON_URI())\n - [`MediaMetadataCompat.METADATA_KEY_ART_URI`](/reference/android/support/v4/media/MediaMetadataCompat#METADATA_KEY_ART_URI())\n - [`MediaMetadataCompat.METADATA_KEY_ALBUM_ART_URI`](/reference/android/support/v4/media/MediaMetadataCompat#METADATA_KEY_ALBUM_ART_URI())\n\nProvide artwork from your app's resources\n-----------------------------------------\n\nTo provide drawables from your [app's resources](/guide/topics/resources/providing-resources), pass a URI in the\nfollowing format: \n\n android.resource://\u003cvar translate=\"no\"\u003ePACKAGE_NAME\u003c/var\u003e/\u003cvar translate=\"no\"\u003eRESOURCE_TYPE\u003c/var\u003e/\u003cvar translate=\"no\"\u003eRESOURCE_NAME\u003c/var\u003e\n\n // Example URI - note that there is no file extension at the end of the URI\n android.resource://com.example.app/drawable/example_drawable\n\nThis snippet demonstrates how to create a URI of this format from a resource ID: \n\n val resources = context.resources\n val resourceId: Int = R.drawable.example_drawable\n\n Uri.Builder()\n .scheme(ContentResolver.SCHEME_ANDROID_RESOURCE)\n .authority(resources.getResourcePackageName(resourceId))\n .appendPath(resources.getResourceTypeName(resourceId))\n .appendPath(resources.getResourceEntryName(resourceId))\n .build()\n\nProvide artwork using a content provider\n----------------------------------------\n\nThese steps describe how to download art from a web URI and expose it through a\nlocal URI using a [content provider](/guide/topics/providers/content-provider-creating). For a complete example, see the\n[implementation](https://github.com/android/uamp/blob/99e44c1c5106218c62eff552b64bbc12f1883a22/common/src/main/java/com/example/android/uamp/media/library/AlbumArtContentProvider.kt#L52) of [`openFile`](/reference/android/content/ContentProvider#openFile(android.net.Uri,%20java.lang.String)) and the surrounding methods in the\nUniversal Android Music Player sample app.\n\n1. Build a `content://` URI corresponding to the web URI. The media browser\n service and media session pass this content URI to Android Auto and\n AAOS.\n\n ### Kotlin\n\n fun Uri.asAlbumArtContentURI(): Uri {\n return Uri.Builder()\n .scheme(ContentResolver.SCHEME_CONTENT)\n .authority(CONTENT_PROVIDER_AUTHORITY)\n .appendPath(this.getPath()) // Make sure you trust the URI\n .build()\n }\n\n ### Java\n\n public static Uri asAlbumArtContentURI(Uri webUri) {\n return new Uri.Builder()\n .scheme(ContentResolver.SCHEME_CONTENT)\n .authority(CONTENT_PROVIDER_AUTHORITY)\n .appendPath(webUri.getPath()) // Make sure you trust the URI!\n .build();\n }\n\n2. In your implementation of `ContentProvider.openFile`, check if a file exists\n for the corresponding URI. If not, download and cache the image file. This\n code snippet uses [Glide](https://github.com/bumptech/glide).\n\n ### Kotlin\n\n override fun openFile(uri: Uri, mode: String): ParcelFileDescriptor? {\n val context = this.context ?: return null\n val file = File(context.cacheDir, uri.path)\n if (!file.exists()) {\n val remoteUri = Uri.Builder()\n .scheme(\"https\")\n .authority(\"my-image-site\")\n .appendPath(uri.path)\n .build()\n val cacheFile = Glide.with(context)\n .asFile()\n .load(remoteUri)\n .submit()\n .get(DOWNLOAD_TIMEOUT_SECONDS, TimeUnit.SECONDS)\n\n cacheFile.renameTo(file)\n file = cacheFile\n }\n return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY)\n }\n\n ### Java\n\n @Nullable\n @Override\n public ParcelFileDescriptor openFile(@NonNull Uri uri, @NonNull String mode)\n throws FileNotFoundException {\n Context context = this.getContext();\n File file = new File(context.getCacheDir(), uri.getPath());\n if (!file.exists()) {\n Uri remoteUri = new Uri.Builder()\n .scheme(\"https\")\n .authority(\"my-image-site\")\n .appendPath(uri.getPath())\n .build();\n File cacheFile = Glide.with(context)\n .asFile()\n .load(remoteUri)\n .submit()\n .get(DOWNLOAD_TIMEOUT_SECONDS, TimeUnit.SECONDS);\n\n cacheFile.renameTo(file);\n file = cacheFile;\n }\n return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);\n }\n\n| **Note:** The content URI should be quickly constructed and sent to Android Auto and AAOS, as demonstrated in the previous example. This is true even when the file isn't downloaded. Android Auto and AAOS show a loading UI for the images when waiting for the content provider to respond. Consider optimizing your app to quickly fetch images and to minimize the time needed to load the UI. Consider preloading and caching images."]]