//

// ViewController.m

// clearCache

//

// Created by li bo on 16/5/30.

// Copyright © 2016年 li bo. All rights reserved.

//

#import "ViewController.h"

#import "LBClearCacheTool.h"

#import "SVProgressHUD.h"

#define filePath [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject]

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

return 50;

}

/*

说明：大家可以NSLog打印“[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject]”

这个路径，然后进入这个路径去给Library -> Caches文件夹里面随便放文件，再次运行这个cell上显示的就是你文件夹真实的缓存

点击清除的时候，大家可以观察这个文件夹里面的东西，是会随之自动删除的

*/

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

static NSString *ID=@"cell";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:ID ];

if (cell==nil) {

cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:ID];

}

cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;

if (indexPath.row==0&&indexPath.section==0) {

NSString *fileSize = [LBClearCacheTool getCacheSizeWithFilePath:filePath];

if ([fileSize integerValue] == 0) {

cell.textLabel.text = @"清除缓存";

}else {

cell.textLabel.text = [NSString stringWithFormat:@"清除缓存(%@)",fileSize];

}

}else {

cell.textLabel.text=[NSString stringWithFormat:@"这是第%zd组cell",indexPath.row];

}

return cell;

}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

if (indexPath.row==0&&indexPath.section==0) {

UIAlertController *alert=[UIAlertController alertControllerWithTitle:@"确定清除缓存吗?" message:nil preferredStyle:UIAlertControllerStyleActionSheet];

//创建一个取消和一个确定按钮

UIAlertAction *actionCancle=[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil];

//因为需要点击确定按钮后改变文字的值，所以需要在确定按钮这个block里面进行相应的操作

UIAlertAction *actionOk=[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) {

//清楚缓存

BOOL isSuccess = [LBClearCacheTool clearCacheWithFilePath:filePath];

if (isSuccess) {

[self.tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];

[SVProgressHUD setDefaultStyle:SVProgressHUDStyleDark];

[SVProgressHUD showSuccessWithStatus:@"清除成功"];

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0f * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{

[SVProgressHUD dismiss];

});

}

} ];

//将取消和确定按钮添加进弹框控制器

[alert addAction:actionCancle];

[alert addAction:actionOk];

//添加一个文本框到弹框控制器

//显示弹框控制器

[self presentViewController:alert animated:YES completion:nil];

}

}

@end