OKHttp 离线缓存

最新推荐文章于 2024-04-18 03:55:45 发布

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最新推荐文章于 2024-04-18 03:55:45 发布

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分类专栏： android 文章标签：缓存

本文链接：https://blog.youkuaiyun.com/qq_30837235/article/details/120567104

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        val builder = OkHttpClient.Builder().apply {
         
            //缓存策略开始 ----------------
            cache(
                Cache(
                    File(context.cacheDir, "http_cache"),
                    20L * 1024L * 1024L
                )
            )
            addNetworkInterceptor { chain ->
                val request = chain.request().also {
                    if (isNetworkAvailable(context)) {
                        val cacheControl = CacheControl.Builder()
                            .maxAge(0, TimeUnit.SECONDS)
                            .maxStale(365, TimeUnit.DAYS)
                            .build()
                        it.newBuilder()
                            .cacheControl(cacheControl)
                            .build()
                    }
                }
                chain.proceed(request).apply {
                    newBuilder()
                        .removeHeader("Pragma")
                        .removeHeader("Cache-Control").run {
                            if (isNetworkAvailable(context)) {
                                header("Cache-Control", "public, max-age=" + (60))
                            } else {
                                header("Cache-Control", "public, only-if-cached, max-stale=" + (60*60*24*28))
                            }
                        }
                        .build()
                 }
            }
            //缓存策略结束 ----------------
        }

        val okHttpClient = builder.build()

    fun isNetworkAvailable(context: Context): Boolean {
        val cm = context
            .getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
        val current = cm.activeNetworkInfo ?: return false
        return current.isAvailable
    }

记下来方便以后复制用的....