在Kotlin成功后进行滑翔回调 [英] Glide callback after success in Kotlin

问题描述

   private SimpleTarget target = new SimpleTarget<Bitmap>() {  

    @Override
    public void onResourceReady(Bitmap bitmap, GlideAnimation glideAnimation) {
        // do something with the bitmap
        // for demonstration purposes, let's just set it to an ImageView
        imageView1.setImageBitmap( bitmap );
    }
};

private void loadImageSimpleTarget() {  
    Glide.with(context)
        .load(uri)
        .override(600, 600)
        .fitCenter()
        .into(target);
}

我试图将其转换为Kotlin，如下所示.

I tried to convert it into Kotlin like as follow.

val finish_target = object : SimpleTarget<Bitmap>() {
                override fun onResourceReady(bitmap: Bitmap?, glideAnimation: GlideAnimation<in Bitmap>?) {
                    preview_image.setImageBitmap(bitmap)
                }
            }

        Glide.with(context)
                .load(uri)
                .override(600, 600)
                .fitCenter()
                .into(finish_target)

但是编译错误表明

public open fun <Y : Target<GlideDrawable!>!> into(target: (???..???)): (???..???) defined in com.bumptech.glide.DrawableRequestBuilder
public open fun into(view: ImageView!): Target<GlideDrawable!>! defined in com.bumptech.glide.DrawableRequestBuilder

请帮助我解决此问题.

推荐答案

 Glide.with(context)
        .load(url)
        .listener(object : RequestListener<Drawable> {
            override fun onLoadFailed(p0: GlideException?, p1: Any?, p2: Target<Drawable>?, p3: Boolean): Boolean {
                TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
            }
            override fun onResourceReady(p0: Drawable?, p1: Any?, p2: Target<Drawable>?, p3: DataSource?, p4: Boolean): Boolean {
                Log.d(TAG, "OnResourceReady")
                //do something when picture already loaded
                return false
            }
        })
        .into(imgView)

使用Glide，您可以将 Listener 添加到链中，以监视图像加载状态.您必须重写两个方法，在 onResourceReady 方法中，您必须回调图像已加载，并且可以执行某些操作，例如隐藏加载器或让动画从另一个视图结束. 在 onLoadFailed 中，您可以获得有关加载时出现的一些错误的信息，并且您也可以采取某种措施.这样，您可以避免这些错误.

With Glide you can add Listener to your chain, which monitor state of your image loading. You have to override two methods, in onResourceReady method you have callback that your image is already loaded and you can do something , for example hide loader or let finish animation from another view. In onLoadFailed you get information about some error while loading and also you can react somehow. This way you can avoid those errors.

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