Remove reflection to show tracking checkmark

Icon now shows up on the left, but code is less fragile.

app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaController.kt

@@ -2,18 +2,16 @@ package eu.kanade.tachiyomi.ui.manga
 
 import android.Manifest.permission.WRITE_EXTERNAL_STORAGE
 import android.os.Bundle
-import com.google.android.material.tabs.TabLayout
-import androidx.vectordrawable.graphics.drawable.VectorDrawableCompat
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.LinearLayout
-import android.widget.TextView
+import androidx.vectordrawable.graphics.drawable.VectorDrawableCompat
 import com.bluelinelabs.conductor.ControllerChangeHandler
 import com.bluelinelabs.conductor.ControllerChangeType
 import com.bluelinelabs.conductor.Router
 import com.bluelinelabs.conductor.RouterTransaction
 import com.bluelinelabs.conductor.support.RouterPagerAdapter
+import com.google.android.material.tabs.TabLayout
 import com.jakewharton.rxrelay.BehaviorRelay
 import com.jakewharton.rxrelay.PublishRelay
 import eu.kanade.tachiyomi.R
@@ -29,8 +27,8 @@ import eu.kanade.tachiyomi.ui.manga.chapter.ChaptersController
 import eu.kanade.tachiyomi.ui.manga.info.MangaInfoController
 import eu.kanade.tachiyomi.ui.manga.track.TrackController
 import eu.kanade.tachiyomi.util.toast
-import kotlinx.android.synthetic.main.main_activity.*
-import kotlinx.android.synthetic.main.manga_controller.*
+import kotlinx.android.synthetic.main.main_activity.tabs
+import kotlinx.android.synthetic.main.manga_controller.manga_pager
 import rx.Subscription
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
@@ -140,10 +138,7 @@ class MangaController : RxController, TabbedController {
             VectorDrawableCompat.create(resources!!, R.drawable.ic_done_white_18dp, null)
         else null
 
-        val view = tabField.get(tab) as LinearLayout
-        val textView = view.getChildAt(1) as TextView
-        textView.setCompoundDrawablesWithIntrinsicBounds(null, null, drawable, null)
-        textView.compoundDrawablePadding = if (visible) 4 else 0
+        tab.icon = drawable
     }
 
     private inner class MangaDetailAdapter : RouterPagerAdapter(this@MangaController) {
@@ -185,9 +180,6 @@ class MangaController : RxController, TabbedController {
         const val INFO_CONTROLLER = 0
         const val CHAPTERS_CONTROLLER = 1
         const val TRACK_CONTROLLER = 2
-
-        private val tabField = TabLayout.Tab::class.java.getDeclaredField("view")
-                .apply { isAccessible = true }
     }
 
 }

app/src/main/res/layout/main_activity.xml

@@ -31,6 +31,7 @@
                 android:layout_height="wrap_content"
                 android:theme="@style/Theme.ActionBar.Tab"
                 app:tabIndicatorColor="@android:color/white"
+                app:tabInlineLabel="true"
                 app:tabGravity="center"
                 app:tabMode="scrollable"
                 app:tabMinWidth="75dp"/>