UI tweaks for pre API 21

app/src/main/java/com/topjohnwu/magisk/databinding/DataBindingAdapters.kt

@@ -3,12 +3,14 @@ package com.topjohnwu.magisk.databinding
 import android.animation.ValueAnimator
 import android.graphics.Paint
 import android.graphics.drawable.Drawable
+import android.util.TypedValue
 import android.view.ContextThemeWrapper
 import android.view.View
 import android.view.ViewGroup
 import android.widget.*
 import androidx.annotation.DrawableRes
 import androidx.appcompat.widget.Toolbar
+import androidx.cardview.widget.CardView
 import androidx.core.view.isGone
 import androidx.core.view.isInvisible
 import androidx.core.view.updateLayoutParams
@@ -302,3 +304,10 @@ fun setListeners(
         attrChange.onChange()
     }
 }
+
+@BindingAdapter("cardBackgroundColorAttr")
+fun CardView.setCardBackgroundColorAttr(attr: Int) {
+    val tv = TypedValue()
+    context.theme.resolveAttribute(attr, tv, true)
+    setCardBackgroundColor(tv.data)
+}

app/src/main/java/com/topjohnwu/magisk/ui/safetynet/SafetynetViewModel.kt

@@ -9,7 +9,7 @@ import com.topjohnwu.magisk.utils.set
 import org.json.JSONObject
 
 enum class SafetyNetState {
-    LOADING, PASS, FAILED, IDLE
+    LOADING, PASS, FAILED
 }
 
 data class SafetyNetResult(
@@ -42,7 +42,7 @@ class SafetynetViewModel : BaseViewModel() {
     @get:Bindable
     val isSuccess get() = currentState == PASS
 
-    private var currentState = IDLE
+    private var currentState = LOADING
         set(value) = set(value, field, { field = it }, BR.checking, BR.failed, BR.success)
 
     init {