androidx_paging 3.3.0 fix PreviewActivity ViewPager call onPageSelect…

…ed on init when use cachedIn int Pager
yueeng · Jun 20, 2024 · aac5170 · aac5170
1 parent 3d69897
commit aac5170
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/.gitignore b/.gitignore
@@ -2,6 +2,7 @@
 .gradle
 /local.properties
 /.idea
+/.kotlin
 .DS_Store
 /build
 /captures

diff --git a/app/src/main/java/com/github/yueeng/moebooru/PreviewActivity.kt b/app/src/main/java/com/github/yueeng/moebooru/PreviewActivity.kt
@@ -113,8 +113,12 @@ class PreviewFragment : Fragment(), SavedFragment.Queryable {
             }
             binding.pager.offscreenPageLimit = 1
             binding.pager.adapter = adapter
+            var first = true
             binding.pager.registerOnPageChangeCallback(object : ViewPager2.OnPageChangeCallback() {
-                override fun onPageSelected(position: Int) = previewModel.index.postValue(position)
+                override fun onPageSelected(position: Int) {
+                    if (first) return
+                    previewModel.index.postValue(position)
+                }
             })
             launchWhenCreated {
                 adapter.loadStateFlow.distinctUntilChangedBy { it.refresh }
@@ -130,6 +134,7 @@ class PreviewFragment : Fragment(), SavedFragment.Queryable {
                         if (index >= 0) binding.pager.post {
                             binding.pager.setCurrentItem(index, false)
                         }
+                        first = false
                     }
             }
             launchWhenCreated {