当UITableView的分组较多的时候,经常会用到快速索引。
//设置Section的Header的值 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section { NSString *key = [indexArray objectAtIndex:section]; return key; } #pragma mark - #pragma mark Table View Data Source Methods //设置表格的索引数组 -(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView { return self.indexArray; }
更改索引的背景颜色:
NS_AVAILABLE_IOS(7_0) UI_APPEARANCE_SELECTOR
self.tableView.sectionIndexBackgroundColor = [UIColor clearColor];
更改索引的文字颜色:
self.tableView.sectionIndexColor = [UIColor blueColor];
默认的快速索引是不允许设置的,但是还是有些牛人找到了Apple隐藏的接口- (void)viewDidLayoutSubviews { [super viewDidLayoutSubviews];//设置导航字体颜色、字体、背景色for (UIView* subview in [self.tableView subviews]){ if ([subview isKindOfClass:NSClassFromString(@'UITableViewIndex')]){ if([subview respondsToSelector:@selector(setIndexColor:)]){ [subview performSelector:@selector(setIndexColor:) withObject:[UIColor redColor]];}if([subview respondsToSelector:@selector(setFont:)]){ [subview performSelector:@selector(setFont:) withObject:[UIColor redColor]];}if([subview respondsToSelector:@selector(setBackgroundColor:)]){ [subview performSelector:@selector(setBackgroundColor:) withObject:[UIColor redColor]];}}}也有人把这段代码写到- (void)viewDidAppear:(BOOL)animated;中,不过关系不大。重点是这三个接口很有可能会发生变化,所以用的时候最好还是调试一下。