java– 用于base64图像的Custom Glide ModelLoader

概述我有来自一些在base64中编码的SOAPAPI的图像.要使用Glide直接加载它我决定编写自定义ModelLoader.滑翔版：4.3.1滑行载重线：GlideApp.with(activity).load(Data().apply{code=licensePlateData.licensePlateImgId}).into(view.imageLicense)GlideModule

我有来自一些在base64中编码的SOAP API的图像.要使用GlIDe直接加载它我决定编写自定义ModelLoader.

滑翔版：4.3.1

滑行载重线：

GlIDeApp.with(activity)        .load(Data().apply { code = licensePlateData.licensePlateimgID })        .into(vIEw.imagelicense)

GlIDeModule：

@GlIDeModuleclass MyAppGlIDeModule : AppGlIDeModule() {    overrIDe fun registerComponents(context: Context, glIDe: GlIDe, registry: Registry) {        super.registerComponents(context, glIDe, registry)        val app = context.applicationContext as MyApplication        registry.append(Data::class.java, ByteArray::class.java, MyImageLoaderFactory(app.API))    }}

装载机：

class MyImageLoaderFactory(private val API: API) : ModelLoaderFactory<Data, ByteArray> {    overrIDe fun teardown() {    }    overrIDe fun build(multiFactory: MultiModelLoaderFactory): ModelLoader<Data, ByteArray> {        return MyImageLoader(API)    }}class MyImageLoader(private val API: API) : ModelLoader<Data, ByteArray> {    overrIDe fun buildLoadData(model: Data, wIDth: Int, height: Int, options: Options): ModelLoader.LoadData<ByteArray> {        val key = "code:${model.code};wIDth:$wIDth;height:$height"        return ModelLoader.LoadData<ByteArray>(ObjectKey(key), MyImageDataFetcher(API, Ge@R_419_5411@Request().apply { data = model }))    }    overrIDe fun handles(model: Data): Boolean {        return true    }}class MyImageDataFetcher(private val API: API, private val request: Ge@R_419_5411@Request) : DataFetcher<ByteArray> {    private val disposables = Compositedisposable()    overrIDe fun cleanup() {        disposables.clear()    }    overrIDe fun loadData(priority: Priority, callback: DataFetcher.DataCallback<in ByteArray>) {        API.ge@R_419_5411@(request) //soap request                .map { it.image.decodeBase64() } //translate String to ByteArray                .subscribe({ callback.onDataReady(it) }, {                    if (it is Exception) {                        callback.onLoadFailed(it)                    } else {                        callback.onLoadFailed(MyException(it))                    }                })                .addTo(disposables)    }    overrIDe fun cancel() {        disposables.clear()    }    overrIDe fun getDataClass(): Class<ByteArray> {        return ByteArray::class.java    }    overrIDe fun getDataSource(): DataSource {        return DataSource.REMOTE    }}

堆栈跟踪/ LogCat：

com.bumptech.glIDe.Registry$NoSourceEncoderAvailableException: Failed to find source encoder for data class: class [B    at com.bumptech.glIDe.Registry.getSourceEncoder(Registry.java:534)    at com.bumptech.glIDe.load.engine.DecodeHelper.getSourceEncoder(DecodeHelper.java:232)    at com.bumptech.glIDe.load.engine.sourceGenerator.cacheData(SourceGenerator.java:74)    at com.bumptech.glIDe.load.engine.sourceGenerator.startNext(SourceGenerator.java:45)    at com.bumptech.glIDe.load.engine.DecodeJob.runGenerators(DecodeJob.java:298)    at com.bumptech.glIDe.load.engine.DecodeJob.runWrapped(DecodeJob.java:268)    at com.bumptech.glIDe.load.engine.DecodeJob.run(DecodeJob.java:229)    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)    at java.lang.Thread.run(Thread.java:764)    at com.bumptech.glIDe.load.engine.executor.GlIDeExecutor$DefaultThreadFactory.run(GlIDeExecutor.java:413)

我认为我错过了让它发挥作用的东西.

解决方法:

感谢https://github.com/bumptech/glide/issues/2677的评论,我找到了解决方案.

@GlIDeModuleclass MyAppGlIDeModule : AppGlIDeModule() {    overrIDe fun registerComponents(context: Context, glIDe: GlIDe, registry: Registry) {        super.registerComponents(context, glIDe, registry)        val app = context.applicationContext as MyApplication        registry.append(Data::class.java, ByteBuffer::class.java, MyImageLoaderFactory(app.API))    }}class MyImageLoaderFactory(private val API: API) : ModelLoaderFactory<Data, ByteBuffer> {    overrIDe fun teardown() {    }    overrIDe fun build(multiFactory: MultiModelLoaderFactory): ModelLoader<Data, ByteBuffer> {        return MyImageLoader(API)    }}class MyImageLoader(private val API: API) : ModelLoader<Data, ByteBuffer> {    overrIDe fun buildLoadData(model: Data, wIDth: Int, height: Int, options: Options): ModelLoader.LoadData<ByteBuffer> {        val key = "code:${model.code};wIDth:$wIDth;height:$height"        return ModelLoader.LoadData<ByteBuffer>(ObjectKey(key), MyImageDataFetcher(API, Ge@R_419_5411@Request().apply { data = model }))    }    overrIDe fun handles(model: Data): Boolean {        return true    }}class ClmImageDataFetcher(private val API: API, private val request: Ge@R_419_5411@Request) : DataFetcher<ByteBuffer> {    private val disposables = Compositedisposable()    overrIDe fun cleanup() {        disposables.clear()    }    overrIDe fun loadData(priority: Priority, callback: DataFetcher.DataCallback<in ByteBuffer>) {        API.ge@R_419_5411@(request)                .map { it.image.decodeBase64() }                .subscribe({ callback.onDataReady(ByteBuffer.wrap(it)) }, {                    if (it is Exception) {                        callback.onLoadFailed(it)                    } else {                        callback.onLoadFailed(MyException(it))                    }                })                .addTo(disposables)    }    overrIDe fun cancel() {        disposables.clear()    }    overrIDe fun getDataClass(): Class<ByteBuffer> {        return ByteBuffer::class.java    }    overrIDe fun getDataSource(): DataSource {        return DataSource.REMOTE    }}

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