可在适配器中动态绘制的Tint可更改所有对象的颜色 [英] Dynamically Tint drawable in adapter change color for all

问题描述

我使用齐射连接从服务器中获取字符串数组.每个字符串都以十六进制包含不同的颜色.我使用这种颜色在适配器中设置可绘制的色调.

I get an array of strings from my server using a volley connection. Every single string contain a different color in hex. I use this color to set Tint of a drawable in adapter.

这是我在适配器中的代码:

Here my code in adapter:

@Override
public void onBindViewHolder(@NonNull final ViewHolder holder, final int position) {
    // Get item from position
    MyObject object = array_data.get(position);
    ...
    ...
    Drawable unwrappedDrawable = AppCompatResources.getDrawable(context, R.drawable.ic_beenhere_black_24dp);
    Drawable wrappedDrawable;
    if (unwrappedDrawable != null) {
        wrappedDrawable = DrawableCompat.wrap(unwrappedDrawable);
        DrawableCompat.setTint(wrappedDrawable, object.getMyColor());
        holder.imvPreparationTime.setImageDrawable(wrappedDrawable);
    }

不幸的是，该行为是不正确的. recyclerview中所有可绘制的项目具有相同的颜色，并且在滚动过程中所有颜色都会改变.

Unfortunately the behavior is not correct. All drawable of items in recyclerview have the same color together and it change for all during scroll.

我该如何实现目标?我希望每件商品都有自己的颜色而不要改变.

How can I perform my goal? I want that every items have his own color and not change.

推荐答案

这可以使用Drawable.mutate()完成.在您的适配器类的onBindViewHolder(..)块中，使用下面的代码片段更改可绘制对象的颜色-

This can be done using Drawable.mutate() . In your adapter class, onBindViewHolder(..) block, use below code snippet to change the tint color of your drawable -

for (Drawable drawable : myTextView.getCompoundDrawablesRelative()) {
                    if (drawable != null) {
                        Drawable wrappedDrawable = DrawableCompat.wrap(drawable);
                        Drawable mutableDrawable = wrappedDrawable.mutate();
                        DrawableCompat.setTint(mutableDrawable, ContextCompat.getColor(context, R.color.desiredColor));
                    }
                }

注意:此代码段用于更改textview的drawable的色彩.因此，如果您需要更改图像或可绘制文件的色彩，只需按以下步骤操作即可:

Note : This code snippet I've used to change the tint of textview's drawable. So, if you required to change the tint of image or drawable file, simply do it as :

Drawable wrappedDrawable = DrawableCompat.wrap(drawable);
                        Drawable mutableDrawable = wrappedDrawable.mutate();
                        DrawableCompat.setTint(mutableDrawable, ContextCompat.getColor(context, R.color.colorGrayD5));

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