add a checkup

方啸宇 · YoKeyword · commit c0118bb87310 · 2019-06-07T15:22:16.000+08:00
diff --git a/fragmentation_core/src/main/java/me/yokeyword/fragmentation/helper/internal/VisibleDelegate.java b/fragmentation_core/src/main/java/me/yokeyword/fragmentation/helper/internal/VisibleDelegate.java
@@ -177,7 +177,11 @@ private void dispatchChild(boolean visible) {
     }
 
     private boolean isParentInvisible() {
-        ISupportFragment fragment = (ISupportFragment) mFragment.getParentFragment();
+        Fragment parentFragment = mFragment.getParentFragment();
+        ISupportFragment fragment = null;
+        if (parentFragment instanceof ISupportFragment) {       //此处强转是否要check? 在获得了parentManager的时候
+            fragment = (ISupportFragment) parentFragment;
+        }
         return fragment != null && !fragment.isSupportVisible();
     }
 

Original file line number	Diff line number	Diff line change
`@@ -177,7 +177,11 @@ private void dispatchChild(boolean visible) {`
`177`	`177`	`}`
`178`	`178`
`179`	`179`	`private boolean isParentInvisible() {`
`180`		`- ISupportFragment fragment = (ISupportFragment) mFragment.getParentFragment();`
	`180`	`+ Fragment parentFragment = mFragment.getParentFragment();`
	`181`	`+ ISupportFragment fragment = null;`
	`182`	`+ if (parentFragment instanceof ISupportFragment) { //此处强转是否要check? 在获得了parentManager的时候`
	`183`	`+ fragment = (ISupportFragment) parentFragment;`
	`184`	`+ }`
`181`	`185`	`return fragment != null && !fragment.isSupportVisible();`
`182`	`186`	`}`
`183`	`187`