YTKResourceCache-Android

A cache library that works with YTKWebView. You can also use it without YTKWebView to load the cache resources separately.

中文说明

Usage

Resource cache ability

val cacheStorage = FileCacheStorage(
    context,
    mappingRule = MappingRule.Default,
    cacheDir = context.getCacheDir().getAbsolutePath(),
)

YTKWebView(context)
    .setCacheReader(cachesStorage.cacheReader)
    .attach(webView)

You can also create your own cache storage like MemoryCacheStorage by implementing CacheStorage interface and then create your own CacheResourceReader and CacheResourceWriter.

interface CacheStorage{
    val cacheReader: CacheResourceReader

    val cacheWriter: CacheResourceWriter
}

interface CacheResourceReader {
    fun getStream(url: String?): InputStream?
}

interface CacheResourceWriter{
    fun getStream(url: String?): OutputStream?
}

FileCacheStorage use DefaultCacheResourceReader for reading cache and FileResourceWriter for writing cache. The DefaultCacheResourceReader first looks up in the assets directory, then in the local cache directory, by a specific mapping rule that maps remote urls to local file paths. The FileResourceWriter use disk file to store cache so make sure your application has WRITE_EXTERNAL_STORAGE permission.

Resource download ability

YTKResourceCache offers you the ability to download resource via internet, you can download files by url like this:

val urlList = listOf("http://...", "http://...")
val downloadTask = DownloadTask(urlList, cacheStorage,
    onSuccess = {

    },
    onFailed = { it:Throwable -> 

    },
    onProgress = { progressList: List<Progress> ->

    }
)
downloadTask.start()

To cancel download task, simply use:

downloadTask.cancel()

Once you use DownloadTask to download resources from internet, the resource is cached by CacheStorage. You can later use CacheResourceReader to quickly get a copy of the resource from cache.