Add placeholder and error image for speaker results

Author: rock3r

app/src/main/java/net/squanchy/imageloader/GlideImageLoader.kt

@@ -32,6 +32,10 @@ private class GlideImageRequest(private val request: RequestBuilder<Drawable>) :
         request.apply(RequestOptions.errorOf(errorImageResId))
     }
 
+    override fun placeholder(@DrawableRes placeholderImageResId: Int) = apply {
+        request.apply(RequestOptions.placeholderOf(placeholderImageResId))
+    }
+
     override fun into(target: ImageView) {
         request.into(target)
     }

app/src/main/java/net/squanchy/imageloader/ImageLoader.kt

@@ -15,5 +15,7 @@ interface ImageRequest {
 
     fun error(@DrawableRes errorImageResId: Int): ImageRequest
 
+    fun placeholder(@DrawableRes placeholderImageResId: Int): ImageRequest
+
     fun into(target: ImageView)
 }

app/src/main/java/net/squanchy/search/SearchItemView.kt

@@ -38,7 +38,10 @@ class SearchItemView @JvmOverloads constructor(
 
         val avatarImageURL = speaker.photoUrl
         if (avatarImageURL.isDefined()) {
-            imageLoader.load(avatarImageURL.getOrThrow()).into(speakerPhoto)
+            imageLoader.load(avatarImageURL.getOrThrow())
+                .placeholder(R.drawable.ic_avatar_placeholder)
+                .error(R.drawable.ic_no_avatar)
+                .into(speakerPhoto)
         } else {
             speakerPhoto.setImageResource(R.drawable.ic_no_avatar)
         }

app/src/main/res/drawable/ic_avatar_placeholder.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+  android:shape="rectangle">
+
+  <solid android:color="#c9c9c9" />
+
+</shape>