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| private fun getClient(): WebViewClient { | |
| return object : WebViewClient() { | |
| override fun shouldInterceptRequest( | |
| view: WebView?, | |
| request: WebResourceRequest? | |
| ): WebResourceResponse? { | |
| return super.shouldInterceptRequest(view, request) | |
| } | |
| override fun shouldInterceptRequest(view: WebView?, url: String?): WebResourceResponse? { | |
| if (url == null) { | |
| return super.shouldInterceptRequest(view, url as String) | |
| } | |
| val interceptedUrl = url.toLowerCase(Locale.ROOT) | |
| val cachableImage = CachableImage.getMatchingImage(interceptedUrl) | |
| return when { | |
| cachableImage != null -> { | |
| val bitmap = Glide.with(webView) | |
| .asBitmap() | |
| .diskCacheStrategy(DiskCacheStrategy.ALL) | |
| .load(interceptedUrl) | |
| .submit() | |
| .get() | |
| WebResourceResponse( | |
| cachableImage.mimeType, | |
| "UTF-8", | |
| getBitmapInputStream( | |
| bitmap, | |
| cachableImage.compressFormat, | |
| ) | |
| ) | |
| } | |
| else -> super.shouldInterceptRequest(view, interceptedUrl) | |
| } | |
| } | |
| } | |
| } | |
| enum class CachableImage( | |
| val suffixes: Set<String>, | |
| val mimeType: String, | |
| val compressFormat: Bitmap.CompressFormat, | |
| ) { | |
| JPG(setOf("jpg", "jpeg"), "image/jpg", Bitmap.CompressFormat.JPEG), | |
| PNG(setOf("png"), "image/png", Bitmap.CompressFormat.PNG), | |
| WEBP(setOf("webp"), "image/webp", Bitmap.CompressFormat.WEBP_LOSSY); | |
| companion object { | |
| fun getMatchingImage(url: String): CachableImage? = values().find { image -> | |
| image.suffixes.any { url.contains(".$it") } | |
| } | |
| } | |
| } | |
| private fun getBitmapInputStream(bitmap: Bitmap, compressFormat: Bitmap.CompressFormat): InputStream = | |
| ByteArrayInputStream( | |
| ByteArrayOutputStream().apply { | |
| bitmap.compress(compressFormat, 80, this) | |
| }.toByteArray() | |
| ) |
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