iOS 用 SDWebImage 清理图片缓存

- (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;
}

#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