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效果图如下：
1.找到 SDWebImage找到SDImageCache类
添加如下方法
- (float)checkTmpSize { float totalSize = 0; NSDirectoryEnumerator *fileEnumerator = [[NSFileManager defaultManager] enumeratorAtPath:_diskCachePath]; for (NSString *fileName in fileEnumerator) { NSString *filePath = [_diskCachePath stringByAppendingPathComponent:fileName]; NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfItemAtPath:filePath error:nil]; unsigned long long length = [attrs fileSize]; totalSize += length / 1024.0 / 1024.0; } // NSLog(@"tmp size is %.2f",totalSize); return totalSize; }
具体用tableView实现
#import <UIKit/UIKit.h> @interface MoreViewController : UITableViewController<UITableViewDelegate,UITableViewDataSource> @end
#import "MoreViewController.h" @interface MoreViewController () @property(nonatomic,strong)NSArray *titleMore; @property(nonatomic,strong)NSArray *image; @property(nonatomic,assign)NSIndexPath* indexPath; @property(nonatomic,strong)UILabel *lbl; @property(nonatomic,assign)float mpSize; @end @implementation MoreViewController - (void)viewDidLoad { [super viewDidLoad]; self.navigationItem.title=@"更多"; self.titleMore=@[@"清除缓存",@"给个评价",@"商务合作",@"检测新版本",@"欢迎页",@"关于"]; self.image=@[@"moreClear",@"moreScore",@"moreBusiness",@"moreVersion",@"moreWelcome",@"moreAbout"]; self.tableView.backgroundColor=[UIColor blackColor]; self.tableView.scrollEnabled=NO; [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"More"]; self.lbl=[[UILabel alloc]init]; self.lbl.textColor=[UIColor whiteColor]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; } -(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{ return 1; } -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{ return self.titleMore.count; } -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:@"More" forIndexPath:indexPath]; if (indexPath.row==0) { self.lbl.text=[NSString stringWithFormat:@"缓存为%.2fMB",[[SDImageCache sharedImageCache] checkTmpSize]]; self.lbl.frame=CGRectMake(200, 10, 200, 10); [cell addSubview:self.lbl]; } cell.imageView.image=[UIImage imageNamed:self.image[indexPath.row]]; cell.textLabel.text=self.titleMore[indexPath.row]; cell.textLabel.textColor=[UIColor whiteColor]; cell.backgroundColor=[UIColor blackColor]; return cell; } - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:YES]; [self.tableView reloadData]; } //弹出框 确定是否清除缓存 -(void)alertView{ NSLog(@"----"); float tmpSize=[[SDImageCache sharedImageCache] checkTmpSize]; UIAlertController *alert=[UIAlertController alertControllerWithTitle:@"提示" message:[NSString stringWithFormat:@"清理缓存(%.2fM)",tmpSize] preferredStyle:UIAlertControllerStyleAlert]; UIAlertAction *ok=[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { [[SDImageCache sharedImageCache] clearDisk]; // [self.tableView reloadRowsAtIndexPaths:@[self.indexPath] withRowAnimation:UITableViewRowAnimationFade]; [self.tableView reloadData]; }]; UIAlertAction *cancle=[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDefault handler:nil]; [alert addAction:ok]; [alert addAction:cancle]; [self presentViewController:alert animated:YES completion:nil]; } // 选择第一列 -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{ if (indexPath.row==0) { [self alertView]; } } /* #pragma mark - Navigation // In a storyboard-based application, you will often want to do a little preparation before navigation - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { // Get the new view controller using [segue destinationViewController]. // Pass the selected object to the new view controller. } */ @end
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原文地址：http://www.cnblogs.com/bolin-123/p/5389176.html
