修复某些情况defaultSelectedIndex设置失效

thongk · Oct 24, 2018 · 47e2a29 · 47e2a29
1 parent d72a6fa
commit 47e2a29
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/Sources/Base/JXCategoryBaseView.m b/Sources/Base/JXCategoryBaseView.m
@@ -203,6 +203,11 @@ - (void)refreshState {
     CGFloat targetX = frameXOfSelectedCell - self.bounds.size.width/2.0 + selectedCellWidth/2.0;
     [self.collectionView setContentOffset:CGPointMake(MAX(MIN(maxX, targetX), minX), 0) animated:NO];
 
+    if (CGRectEqualToRect(self.contentScrollView.frame, CGRectZero) && self.contentScrollView.superview != nil) {
+        //某些情况、系统会出现JXCategoryView先布局，contentScrollView后布局。就会导致下面指定defaultSelectedIndex失效，所以发现frame为zero时，强行触发布局。
+        [self.contentScrollView.superview setNeedsLayout];
+        [self.contentScrollView.superview layoutIfNeeded];
+    }
     [self.contentScrollView setContentOffset:CGPointMake(self.selectedIndex*self.contentScrollView.bounds.size.width, 0) animated:NO];
 }