如何使用毕加索的颜色作为占位符图像？

我想使用毕加索将颜色设置为占位符图像。

我试过这个：

    int placeHolderColor2 = Color.rgb(20,20,20);

    Picasso.with(context)
         .load(item.getImageUrls().get(0))
         .placeholder(placeHolderColor2)
         .error(R.drawable.card_image)
        .centerCrop()
        .fit()
        .into(viewHolder.imageView);

但它会导致以下错误：

10-07 05:36:42.965 5827-5827/? E/AndroidRuntime: android.content.res.Resources$NotFoundException: Resource ID #0xff141414
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.content.res.Resources.getValue(Resources.java:1266)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.content.res.Resources.getDrawable(Resources.java:785)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.content.res.Resources.getDrawable(Resources.java:752)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at com.squareup.picasso.RequestCreator.getPlaceholderDrawable(RequestCreator.java:676)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at com.squareup.picasso.RequestCreator.into(RequestCreator.java:637)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at com.squareup.picasso.RequestCreator.into(RequestCreator.java:601)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at com.lorentzos.swipecards.ServiceCardDtoListAdapter.createViewFromResource(ServiceCardDtoListAdapter.java:116)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at com.lorentzos.swipecards.ServiceCardDtoListAdapter.getView(ServiceCardDtoListAdapter.java:66)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at com.lorentzos.flingswipe.SwipeFlingAdapterView.layoutChildren(SwipeFlingAdapterView.java:161)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at com.lorentzos.flingswipe.SwipeFlingAdapterView.refresh(SwipeFlingAdapterView.java:152)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at com.lorentzos.flingswipe.SwipeFlingAdapterView.onLayout(SwipeFlingAdapterView.java:138)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.view.View.layout(View.java:15671)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.view.ViewGroup.layout(ViewGroup.java:5038)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1076)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.view.View.layout(View.java:15671)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.view.ViewGroup.layout(ViewGroup.java:5038)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.widget.FrameLayout.layoutChildren(FrameLayout.java:579)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.widget.FrameLayout.onLayout(FrameLayout.java:514)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.view.View.layout(View.java:15671)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.view.ViewGroup.layout(ViewGroup.java:5038)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.widget.LinearLayout.onLayout(LinearLayout.java:1466)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.view.View.layout(View.java:15671)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.view.ViewGroup.layout(ViewGroup.java:5038)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.widget.FrameLayout.layoutChildren(FrameLayout.java:579)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.widget.FrameLayout.onLayout(FrameLayout.java:514)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at android.view.View.layout(View.java:15671)
10-07 05:36:42.965 5827-5827/? E/AndroidRuntime:     at 

如何使用毕加索的颜色作为占位符图像？

从错误日志本身就可以理解android.content.res.Resources$NotFoundException: Resource ID #0xff141414

使用最新版本的Picasso http://square.github.io/picasso/#download

并尝试这个

Picasso.with(mContext).load("URL").placeholder(R.color.holder_color).error(R.color.error_color).into(viewHolder.imageView);