暂提

GMPhobos/Classes/UIResponder+PhobosPV.m

@@ -254,6 +254,14 @@
     objc_setAssociatedObject(self, @selector(updatePVStartBlock), updatePVStartBlock, OBJC_ASSOCIATION_COPY_NONATOMIC);
 }
 
+- (void)setIsFirst:(NSInteger)isFirst {
+    objc_setAssociatedObject(self, @selector(isFirst), @(isFirst), OBJC_ASSOCIATION_ASSIGN);
+}
+
+- (NSInteger)isFirst {
+    return objc_getAssociatedObject(self, _cmd);
+}
+
 - (PhobosUpdatePVBlock)updatePVStartBlock {
     PhobosUpdatePVBlock updatePVBlock = objc_getAssociatedObject(self, @selector(updatePVStartBlock));
     return updatePVBlock;