优化搜索建议的显示

ko1o · Dec 13, 2016 · f738851 · f738851
1 parent 0568b0f
commit f738851
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Showing 2 changed files with 14 additions and 3 deletions.
diff --git a/PYSearch/PYSearchSuggestionViewController.m b/PYSearch/PYSearchSuggestionViewController.m
@@ -70,6 +70,8 @@ - (void)setSearchSuggestions:(NSArray<NSString *> *)searchSuggestions
     if (!UIEdgeInsetsEqualToEdgeInsets(self.originalContentInset, UIEdgeInsetsZero)) { // originalContentInset非零
         self.tableView.contentInset =  self.originalContentInset;
     }
+    // 滚动到头部
+    self.tableView.contentOffset = CGPointMake(0, -self.tableView.contentInset.top);
 }
 
 

diff --git a/PYSearch/PYSearchViewController.m b/PYSearch/PYSearchViewController.m
@@ -121,7 +121,6 @@ - (PYSearchSuggestionViewController *)searchSuggestionVC
             }
         };
         searchSuggestionVC.view.frame = CGRectMake(0, 64, self.view.py_width, self.view.py_height);
-        searchSuggestionVC.tableView.contentInset = UIEdgeInsetsMake(-30, 0, self.keyboardHeight + 30, 0);
         searchSuggestionVC.view.backgroundColor = self.baseSearchTableView.backgroundColor;
         searchSuggestionVC.view.hidden = YES;
         // 设置数据源
@@ -594,8 +593,6 @@ - (void)setSearchBarBackgroundColor:(UIColor *)searchBarBackgroundColor
 
 - (void)setSearchSuggestions:(NSArray<NSString *> *)searchSuggestions
 {
-    if (self.searchSuggestionHidden) return; // 如果隐藏，直接返回，避免刷新操作
-
     _searchSuggestions = [searchSuggestions copy];
     // 赋值给搜索建议控制器
     self.searchSuggestionVC.searchSuggestions = [searchSuggestions copy];
@@ -758,6 +755,8 @@ - (void)keyboardDidShow:(NSNotification *)noti
     NSDictionary *info = noti.userInfo;
     self.keyboardHeight = [info[UIKeyboardFrameEndUserInfoKey] CGRectValue].size.height;
     self.keyboardshowing = YES;
+    // 调整搜索建议的内边距
+    self.searchSuggestionVC.tableView.contentInset = UIEdgeInsetsMake(-30, 0, self.keyboardHeight + 30, 0);
 }
 
 /** 点击清空历史按钮 */
@@ -860,6 +859,8 @@ - (void)saveSearchCacheAndRefreshView
             self.searchResultController.view.hidden = NO;
             self.searchResultController.view.py_y = 64;
             self.searchSuggestionVC.view.hidden = YES;
+            // 清空搜索建议
+            self.searchSuggestions = nil;
             break;
         case PYSearchResultShowModeCustom: // 自定义
 
@@ -920,6 +921,10 @@ - (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
     self.baseSearchTableView.hidden = searchText.length && !self.searchSuggestionHidden;
     // 根据输入文本显示建议搜索条件
     self.searchSuggestionVC.view.hidden = self.searchSuggestionHidden || !searchText.length;
+    if (self.searchSuggestionVC.view.hidden) { // 搜索建议隐藏
+        // 清空搜索建议
+        self.searchSuggestions = nil;
+    }
     // 放在最上层
     [self.view bringSubviewToFront:self.searchSuggestionVC.view];
     // 如果代理实现了代理方法则调用代理方法
@@ -935,6 +940,10 @@ - (BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar
         self.searchResultController.view.hidden = YES;
         // 根据输入文本显示建议搜索条件
         self.searchSuggestionVC.view.hidden = self.searchSuggestionHidden || !searchBar.text.length;    // 如果有搜索文本且显示搜索建议，则隐藏
+        if (self.searchSuggestionVC.view.hidden) { // 搜索建议隐藏
+            // 清空搜索建议
+            self.searchSuggestions = nil;
+        }
         self.baseSearchTableView.hidden = searchBar.text.length && !self.searchSuggestionHidden;
     }
     return YES;