up

app/src/main/java/io/legado/app/help/ReadBookConfig.kt

@@ -42,21 +42,7 @@ object ReadBookConfig {
     }
 
     fun upBg() {
-        getConfig().apply {
+        bg = getConfig().bgDrawable()
-            when (bgType) {
-                0 -> bg = ColorDrawable(Color.parseColor(bgStr))
-                1 -> bg = Drawable.createFromStream(App.INSTANCE.assets.open("bg" + File.separator + bgStr), "bg")
-                else -> {
-                    try {
-                        bg = Drawable.createFromPath(bgStr)
-                    } finally {
-                        bg ?: let {
-                            bg = ColorDrawable(Color.parseColor("#015A86"))
-                        }
-                    }
-                }
-            }
-        }
     }
 
     fun save() {
@@ -113,5 +99,18 @@ object ReadBookConfig {
         fun textColor(): Int {
             return Color.parseColor(textColor)
         }
+
+        fun bgDrawable(): Drawable {
+            var bgDrawable: Drawable? = null
+            when (bgType) {
+                0 -> bgDrawable = ColorDrawable(Color.parseColor(bgStr))
+                1 -> bgDrawable =
+                    Drawable.createFromStream(App.INSTANCE.assets.open("bg" + File.separator + bgStr), "bg")
+                else -> runCatching {
+                    bgDrawable = Drawable.createFromPath(bgStr)
+                }
+            }
+            return bgDrawable ?: ColorDrawable(Color.parseColor("#015A86"))
+        }
     }
 }

app/src/main/java/io/legado/app/ui/readbook/config/ReadStyleDialog.kt

@@ -8,6 +8,7 @@ import android.view.ViewGroup
 import androidx.fragment.app.DialogFragment
 import io.legado.app.R
 import io.legado.app.constant.Bus
+import io.legado.app.help.ImageLoader
 import io.legado.app.help.ReadBookConfig
 import io.legado.app.lib.theme.accentColor
 import io.legado.app.lib.theme.primaryTextColor
@@ -79,7 +80,25 @@ class ReadStyleDialog : DialogFragment() {
         tv_bg2.setTextColor(ReadBookConfig.getConfig(2).textColor())
         tv_bg3.setTextColor(ReadBookConfig.getConfig(3).textColor())
         tv_bg4.setTextColor(ReadBookConfig.getConfig(4).textColor())
-
+        for (i in 0..4) {
+            val iv = when (i) {
+                1 -> bg1
+                2 -> bg2
+                3 -> bg3
+                4 -> bg4
+                else -> bg0
+            }
+            ReadBookConfig.getConfig(i).apply {
+                when (bgType) {
+                    2 -> {
+                        ImageLoader.load(requireContext(), bgStr)
+                            .centerCrop()
+                            .setAsFile(iv)
+                    }
+                    else -> iv.setImageDrawable(bgDrawable())
+                }
+            }
+        }
     }
 
     private fun upBg() {