如何在加载之前为卸载的图像视图提供不同的颜色，更改 Picasso 代码以滑动

Question

使用 Picasso 很容易实现

 Picasso.with(holder.mImageView.getContext())
            .load(item.getUrl())
            .into(new Target() {
                @Override
                public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
                    holder.mImageView.setImageBitmap(bitmap);
                    holder.mLoadingImageView.setVisibility(View.GONE);
                    holder.updatePalette();//the logic of generate diffrent background colors
                    Log.d(TAG, "on success");
                }

                @Override
                public void onBitmapFailed(Drawable errorDrawable) {
                    holder.mLoadingImageView.setVisibility(View.GONE);
                    Log.d(TAG, "on error");
                }

                @Override
                public void onPrepareLoad(Drawable placeHolderDrawable) {
                    holder.mLoadingImageView.setVisibility(View.VISIBLE);
                }
            });

和 holder 从 updatePalette 函数处理 that logic（为卸载的图像获取不同的颜色），here its code or the whole demo 如果需要

在滑翔什么？

Glide.with(holder.mImageView.getContext())
            .load(item.getUrl())
            .into(/*WHAT*/);

任何重复都会有所帮助。

Answer 1

placeholder Image设置方法Picasso和Glid相同

滑行

Glide.with(holder.mImageView.getContext())
            .load(item.getUrl())
            .placeholder(R.drawable.placeholder)
            .into(imageView)

毕加索

Picasso.with(holder.mImageView.getContext())
            .load(item.getUrl())
            .placeholder(R.drawable.placeholder)
            .into(imageView)

Answer 2

您可以在 glide 中使用 Target or SimpleTarget (implements Target) 实现相同的效果。

即

Glide.load("http://somefakeurl.com/fakeImage.jpeg")
      .asBitmap()
      .fitCenter()
      .into(new SimpleTarget(250, 250) {

          @Override
          public void onResourceReady(Bitmap resource, GlideAnimation glideAnimation) {
              // Image Loaded successfully.
          }

          @Override
          public void onLoadStarted(Drawable placeholder){
            // Image Loading starts
          }


          @Override
          public void  onLoadFailed(Exception e, Drawable errorDrawable){
            // Image Loading failed
          }

      });
 }

Answer 3

使用 Picasso 的占位符功能保留 PlaceHolder 直到加载图像

Picasso.with(context)
            .load("image_url")
            .placeholder(R.drawable.ic_launcher)
            .into(imageView);

Answer 4

最后我做到了

    private ColorDrawable[] vibrantLightColorList =
        {
                new ColorDrawable(Color.parseColor("#9ACCCD")), new ColorDrawable(Color.parseColor("#8FD8A0")),
                new ColorDrawable(Color.parseColor("#CBD890")), new ColorDrawable(Color.parseColor("#DACC8F")),
                new ColorDrawable(Color.parseColor("#D9A790")), new ColorDrawable(Color.parseColor("#D18FD9")),
                new ColorDrawable(Color.parseColor("#FF6772")), new ColorDrawable(Color.parseColor("#DDFB5C"))
        };

然后

Glide.with(holder.mImageView.getContext())
            .load(item.getUrl())
            .placeholder(getRandomDrawbleColor())
            .into(holder.mImageView);

和

public ColorDrawable getRandomDrawbleColor() {
    int idx = new Random().nextInt(vibrantLightColorList.length);
    return vibrantLightColorList[idx];
}

如何在加载之前为卸载的图像视图提供不同的颜色，更改 Picasso 代码以滑动

How to give unloaded imageview different colors until they are loaded, change Picasso code to glide

android

imageview

picasso

image-loading

android-glide