主要写的是UITableView的索引,我们知道UItableview自带的索引比较难看,所以找资料写了这个.. 废话不多说,直接上代码
UITableView+Extension的.h部分:
#import <uikit/uikit.h>
@class YWIndexView;
@interface UITableView (Extension)
-(UIView *)setIndexViewWithSArr:(NSArray *)titleArr;
@end
@interface YWIndexView : UIView
@property(nonatomic,strong)NSMutableArray *titles;
@end
UITableView+Extension的.m部分:
#import "UITableView+Extension.h"
static float number;
@implementation UITableView (Extension)
-(UIView *)setIndexViewWithSArr:(NSMutableArray *)titleArr{
float tableViewH = self.bounds.size.height;
float insetTop = self.contentInset.top;
float insetBottom = self.contentInset.bottom;
float screenW = [[UIScreen mainScreen] bounds].size.width;
float indexViewH = (tableViewH - insetTop - insetBottom)*0.73;
float indexViewY = (tableViewH - insetTop - insetBottom)*0.09 *0.5+self.frame.origin.y +insetTop;
YWIndexView *indexView = [[YWIndexView alloc]initWithFrame:CGRectMake(screenW - 15, indexViewY, 10, indexViewH)];
indexView.titles = titleArr;
number = titleArr.count;
for (int i = 0; i < titleArr.count; i++) {
UILabel *letterLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, indexViewH/number*i,12, indexViewH/number)];
letterLabel.font = [UIFont systemFontOfSize:12];
letterLabel.textColor = [UIColor grayColor];
letterLabel.text = titleArr[i];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(indexViewTap:)];
[indexView addGestureRecognizer:tap];
[indexView addSubview:letterLabel];
}
if (self.superview) {
[self.superview addSubview:indexView];
}
else{
return nil;
}
return indexView;
}
-(void)indexViewTap:(UITapGestureRecognizer *)tap{
// indexView
YWIndexView *label = (YWIndexView *)tap.view;
float touchY = [tap locationInView:tap.view].y;
float index = touchY /label.bounds.size.height *(number);
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:index+2];
[self scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionTop animated:YES];
}
@end
@implementation YWIndexView
@end
他的使用方法:
主要代码部分:
[self.view addSubview:_classifyTableVC];
UIView *subview = [_classifyTableVC setIndexViewWithSArr:Title];
[self.view addSubview:subview];