fix some lint warnings

Author: hannesa2

SliceViewerKotlin/app/src/main/java/com/example/android/sliceviewer/util/SliceViewKtx.kt

@@ -30,62 +30,57 @@ import androidx.slice.core.SliceHints
 import androidx.slice.widget.SliceLiveData
 import androidx.slice.widget.SliceView
 import androidx.slice.widget.SliceView.OnSliceActionListener
-import com.example.android.sliceviewer.ui.list.SliceViewerActivity
 import com.example.android.sliceviewer.ui.list.SliceViewerActivity.Companion.TAG
 
 fun SliceView.bind(
-    context: Context,
-    lifecycleOwner: LifecycleOwner,
-    uri: Uri,
-    onSliceActionListener: OnSliceActionListener = OnSliceActionListener { _, _ -> },
-    onClickListener: OnClickListener = OnClickListener { },
-    onLongClickListener: OnLongClickListener = OnLongClickListener { false },
-    scrollable: Boolean = false
+        context: Context,
+        lifecycleOwner: LifecycleOwner,
+        uri: Uri,
+        onSliceActionListener: OnSliceActionListener = OnSliceActionListener { _, _ -> },
+        onClickListener: OnClickListener = OnClickListener { },
+        onLongClickListener: OnLongClickListener = OnLongClickListener { false },
+        scrollable: Boolean = false
 ) {
     setOnSliceActionListener(onSliceActionListener)
     setOnClickListener(onClickListener)
-    setScrollable(scrollable)
+    isScrollable = scrollable
     setOnLongClickListener(onLongClickListener)
     if (uri.scheme == null) {
         Log.w(TAG, "Scheme is null for URI $uri")
         return
     }
     // If someone accidentally prepends the "slice-" prefix to their scheme, let's remove it.
     val scheme =
-        if (uri.scheme.startsWith("slice-")) {
-            uri.scheme.replace("slice-", "")
-        }
-        else {
-            uri.scheme
-        }
+            if (uri.scheme.startsWith("slice-")) {
+                uri.scheme.replace("slice-", "")
+            } else {
+                uri.scheme
+            }
     if (scheme == ContentResolver.SCHEME_CONTENT ||
-        scheme.equals("https", true) ||
-        scheme.equals("http", true)
+            scheme.equals("https", true) ||
+            scheme.equals("http", true)
     ) {
         val intent = Intent(Intent.ACTION_VIEW, uri)
         val sliceLiveData = SliceLiveData.fromIntent(context, intent)
-        sliceLiveData?.removeObservers(lifecycleOwner)
+        sliceLiveData.removeObservers(lifecycleOwner)
         try {
-            sliceLiveData?.observe(lifecycleOwner, Observer { updatedSlice ->
+            sliceLiveData.observe(lifecycleOwner, Observer { updatedSlice ->
                 if (updatedSlice == null) return@Observer
                 slice = updatedSlice
                 val expiry = SliceMetadata.from(context, updatedSlice).expiry
                 if (expiry != SliceHints.INFINITY) {
                     // Shows the updated text after the TTL expires.
                     postDelayed(
-                        { slice = updatedSlice },
-                        expiry - System.currentTimeMillis() + 15
+                            { slice = updatedSlice },
+                            expiry - System.currentTimeMillis() + 15
                     )
                 }
-                Log.d(SliceViewerActivity.TAG, "Update Slice: $updatedSlice")
+                Log.d(TAG, "Update Slice: $updatedSlice")
             })
         } catch (e: Exception) {
-            Log.e(
-                SliceViewerActivity.TAG,
-                "Failed to find a valid ContentProvider for authority: $uri"
-            )
+            Log.e(TAG, "Failed to find a valid ContentProvider for authority: $uri")
         }
     } else {
-        Log.w(SliceViewerActivity.TAG, "Invalid uri, skipping slice: $uri")
+        Log.w(TAG, "Invalid uri, skipping slice: $uri")
     }
 }