无法在Android

时间：2018-09-24 13:56:10

标签： android kotlin android-glide

在项目implementation 'com.github.bumptech.glide:glide:4.8.0'中使用

从服务器链接（.svg）获取

如何下​​载给定URL的.svg图标，并使其在ImageView中滑动显示？

现在我用它像这样：

Glide.with(bankLogoView.context)
            .`as`(PictureDrawable::class.java)
            .load(data.logoUrl)
            .listener(SvgSoftwareLayerSetter())
            .apply(options)
            .into(bankLogoView)

哪里有：

private val options = RequestOptions().centerCrop()
        .diskCacheStrategy(DiskCacheStrategy.ALL).placeholder(R.drawable.ic_logo_splash)

还添加了下一个课程SvgDecoder：

class SvgDecoder : ResourceDecoder<InputStream, SVG> {

override fun handles(source: InputStream, options: Options): Boolean {
    // TODO: Can we tell?
    return true
}

@Throws(IOException::class)
override fun decode(source: InputStream, width: Int, height: Int,
                    options: Options): Resource<SVG>? {
    try {
        val svg = SVG.getFromInputStream(source)
        return SimpleResource(svg)
    } catch (ex: SVGParseException) {
        throw IOException("Cannot load SVG from stream", ex)
    }
}
}

SvgDrawableTranscoder：

class SvgDrawableTranscoder : ResourceTranscoder<SVG, PictureDrawable> {

override fun transcode(toTranscode: Resource<SVG>,
                       options: Options): Resource<PictureDrawable>? {
    val svg = toTranscode.get()
    val picture = svg.renderToPicture()
    val drawable = PictureDrawable(picture)
    return SimpleResource(drawable)
}
}

SvgModule：

@GlideModule
class SvgModule : AppGlideModule() {
override fun registerComponents(context: Context, glide: Glide,
                                registry: Registry) {
    registry.register(SVG::class.java, PictureDrawable::class.java, SvgDrawableTranscoder())
            .append(InputStream::class.java, SVG::class.java, SvgDecoder())
}

// Disable manifest parsing to avoid adding similar modules twice.
override fun isManifestParsingEnabled(): Boolean {
    return false
}
}

SvgSoftwareLayerSetter：

class SvgSoftwareLayerSetter : RequestListener<PictureDrawable> {

override fun onLoadFailed(e: GlideException?, model: Any, target: Target<PictureDrawable>,
                          isFirstResource: Boolean): Boolean {
    val view = (target as ImageViewTarget<*>).view
    view.setLayerType(ImageView.LAYER_TYPE_NONE, null)
    return false
}

override fun onResourceReady(resource: PictureDrawable, model: Any,
                             target: Target<PictureDrawable>, dataSource: DataSource, isFirstResource: Boolean): Boolean {
    val view = (target as ImageViewTarget<*>).view
    view.setLayerType(ImageView.LAYER_TYPE_SOFTWARE, null)
    return false
}
}

但是我也只显示选项。 data.logoUrl不为空，但不显示

UPD：

  

滑行：https://mandarine.com/logos/providers/xf/fake_demobank_xf.svg的加载失败，大小为[65x66]            com.bumptech.glide.load.engine.GlideException类：无法加载资源

当我.load("url")时，试图对Google的一些网址进行硬编码：

  

https://upload.wikimedia.org/wikipedia/sco/7/71/Pringles.svg

但也没有显示图像。

我尝试做的第二种方式： 实施此library 

implementation 'com.caverock:androidsvg-aar:1.3'

然后修改了我的布局：

<com.caverock.androidsvg.SVGImageView
        android:id="@+id/bankLogoView"
        style="@style/icon_account_view"
        app:svg="@drawable/ic_buy_violet"/>

然后在我的持有人身上这样：

bankLogoView.setImageAsset("wallet.svg")

但是我如何从服务器下载.svg文件？

2 个答案:

答案 0 :(得分：4)

我的代码是Java语言，但希望您能得到备忘录。将以下依赖项添加到您的应用模块build.gradle文件中：

implementation 'com.caverock:androidsvg:1.2.1'

在您的GlideModule中：

public class GlideModule extends AppGlideModule {
    ...
    @Override
    public void registerComponents(@NonNull Context context, @NonNull Glide glide, @NonNull Registry registry) {
        registry.register(SVG.class, PictureDrawable.class, new SvgDrawableTranscoder()).append(InputStream.class, SVG.class, new SvgDecoder());
    }
}

SvgDecoder.java 

public class SvgDecoder implements ResourceDecoder<InputStream, SVG> {

    @Override
    public boolean handles(InputStream source, Options options) throws IOException {
        // TODO: Can we tell?
        return true;
    }

    public Resource<SVG> decode(InputStream source, int width, int height, Options options)
            throws IOException {
        try {
            SVG svg = SVG.getFromInputStream(source);
            return new SimpleResource<SVG>(svg);
        } catch (SVGParseException ex) {
            throw new IOException("Cannot load SVG from stream", ex);
        }
    }
}

SvgDrawableTranscoder.java 

public class SvgDrawableTranscoder implements ResourceTranscoder<SVG, PictureDrawable> {
    @Override
    public Resource<PictureDrawable> transcode(Resource<SVG> toTranscode, Options options) {
        SVG svg = toTranscode.get();
        Picture picture = svg.renderToPicture();
        PictureDrawable drawable = new PictureDrawable(picture);
        return new SimpleResource<PictureDrawable>(drawable);
    }
}

SvgSoftwareLayerSetter.java 

public class SvgSoftwareLayerSetter implements RequestListener<PictureDrawable> {

    @Override
    public boolean onLoadFailed(GlideException e, Object model, Target<PictureDrawable> target,
                                boolean isFirstResource) {
        ImageView view = ((ImageViewTarget<?>) target).getView();
        view.setLayerType(ImageView.LAYER_TYPE_NONE, null);
        return false;
    }

    @Override
    public boolean onResourceReady(PictureDrawable resource, Object model,
                                   Target<PictureDrawable> target, DataSource dataSource, boolean isFirstResource) {
        ImageView view = ((ImageViewTarget<?>) target).getView();
        view.setLayerType(ImageView.LAYER_TYPE_SOFTWARE, null);
        return false;
    }
}

然后将其与Glide一起使用：

Glide.with(this)
        .as(PictureDrawable.class)
        .load(svgUrl)
        .listener(new SvgSoftwareLayerSetter())
        .into(imageView);

答案 1 :(得分：1)

做到了。从Glide v4开始，不必为每个请求都创建解码器和代码转换器，最好在GlideModule中设置一次。 Glide通过默认的ModelLoader之一处理InputStream的URL。

@GlideModule
class GlideModule : AppGlideModule() {
override fun registerComponents(context: Context, glide: Glide, registry: Registry) {
    registry.append( InputStream::class.java, SVG::class.java, SvgDecoder() )
    registry.register( SVG::class.java, PictureDrawable::class.java, SvgDrawableTranscoder() )
    }
}

class SvgDecoder : ResourceDecoder<InputStream, SVG> {
override fun handles(source: InputStream, options: Options): Boolean {
    return true
}

@Throws(IOException::class)
override fun decode(source: InputStream, width: Int, height: Int, options: Options): Resource<SVG> {
    try {
        val svg = SVG.getFromInputStream(source)
        return SimpleResource(svg)
    } catch (ex: SVGParseException) {
        throw IOException("Cannot load SVG from stream", ex)
    }
}
}

class SvgDrawableTranscoder : ResourceTranscoder<SVG, PictureDrawable> {
    override fun transcode(toTranscode: Resource<SVG>, options: Options): Resource<PictureDrawable> {
    val svg = toTranscode.get()
    val picture = svg.renderToPicture()
    val drawable = PictureDrawable(picture)
    return SimpleResource(drawable)
    }
}

    GlideApp.with(this)
            .load("https://sample.svg" )
            .into(imageView)
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